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Pressure Treated Summerhouses

Our summerhouses range from traditional to log cabin styles, and pressure treatment is available as an option on the models below. Select it on the product page when you choose your size and specification.

Pressure treatment forces preservative deep into the timber rather than leaving it on the surface, so the protection lasts longer and needs less topping up. Pressure-treated buildings carry our 15-year guarantee against rot, decay and insect infestation.

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BillyOh Dojo E Insulated Building
BillyOh Switch Pressure Treated Pent Summerhouse
BillyOh Picton Corner Summerhouse
BillyOh Darcy Log Cabin Summerhouse
BillyOh Tianna Log Cabin Summerhouse with Side Store
BillyOh Fraya Pent Log Cabin Best seller!
-51%
From £2,634.00
BillyOh Winchester Log Cabin
-46%
From £2,595.00
BillyOh Carmen Log Cabin Summerhouse
BillyOh Sasha Log Cabin Summerhouse
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From £1,846.00 £2,031.00
{"category":{"CategoryID":4435,"CategoryName":"Pressure Treated Summerhouses","CatDescription":null,"CategoryRewrite":"pressure-treated-summerhouses","DisplayName":"Pressure Treated Summerhouses","TagH1":"Pressure Treated Summerhouses","ShopByText":"\u003Cp\u003EOur \u003Ca href=\u0022https://www.gardenbuildingsdirect.co.uk/summerhouses\u0022\u003Esummerhouses\u003C/a\u003E range from traditional to log cabin styles, and pressure treatment is available as an option on the models below. Select it on the product page when you choose your size and specification.\u003C/p\u003E\r\n\u003Cp\u003EPressure treatment forces preservative deep into the timber rather than leaving it on the surface, so the protection lasts longer and needs less topping up. Pressure-treated buildings carry our \u003Cstrong\u003E15-year guarantee against rot, decay and insect infestation\u003C/strong\u003E.\u003C/p\u003E","MetaPageTitle":"Pressure-Treated Summerhouses","MetaDescription":"Buy a low-Maintenance \u0026 long-lasting Pressure-treated Summerhouse from Garden Buildings Direct. Get Free UK delivery and a great 15-year guarantee!","CustomBlock":"\u003Ch2\u003EBuy a Pressure Treated Summerhouse\u003C/h2\u003E\r\n\u003Cp\u003EHere at Garden Buildings Direct, we offer pressure treatment as an option across our summerhouse range, to suit all types of garden and homeowner. Our \u003Ca href=\u0022https://www.gardenbuildingsdirect.co.uk/contemporary-log-cabins\u0022\u003Econtemporary log cabins\u003C/a\u003E are designed with a sleek pent roof for a modern feel, while our more \u003Ca href=\u0022https://www.gardenbuildingsdirect.co.uk/traditional-summerhouses\u0022\u003Etraditional summerhouses\u003C/a\u003E include the tried and tested apex roof.\u003C/p\u003E\r\n\u003Cp\u003EIt\u0027s worth considering if you\u0027d rather spend less time on upkeep, and it carries a longer guarantee.\u003C/p\u003E\r\n\u003Cp\u003ENot sure which type you need? Our \u003Ca href=\u0022https://www.gardenbuildingsdirect.co.uk/blog/summerhouses-the-ultimate-guide/\u0022\u003Esummerhouse buying guide\u003C/a\u003E can help.\u003C/p\u003E\r\n\r\n\u003Ch2\u003EWhat Are Pressure Treated Summerhouses?\u003C/h2\u003E\r\n\u003Cp\u003EPressure treatment costs more up front, but it needs less maintenance than surface treatments and carries a longer guarantee. It\u0027s an option you select on each product page when choosing your size and specification.\u003C/p\u003E\r\n\u003Cp\u003EThe timber goes into a sealed cylinder, where a vacuum draws air out of the wood before preservative is forced in under pressure. That gets the preservative deep into the fibres rather than leaving it on the surface, which is why the protection against rot, decay and insect attack lasts longer.\u003C/p\u003E\r\n\u003Cp\u003EPressure treatment doesn\u0027t change the timber\u0027s structural strength \u2014 that comes from the species and the section size. What it does is resist biological decay.\u003C/p\u003E\r\n\r\n\u003Ch3\u003EMaintenance\u003C/h3\u003E\r\n\u003Cp\u003EPressure-treated timber doesn\u0027t need the annual treatment a spray-treated or untreated building does.\u003C/p\u003E\r\n\u003Cp\u003ETreatment isn\u0027t the same as waterproofing, though, as pressure treatment serves to prevent rot-based issues rather than keeping water out. A coating of water-resistant paint after the treatment has dried can help to prevent water ingress, and there won\u0027t be as much pressure to keep this topped up. Keep the roof covering sound, make sure the base keeps the building clear of the ground, and allow airflow through the building so moisture doesn\u0027t sit inside. Don\u0027t fill gaps between timber panels with caulk, filler or expanding foam \u2014 panel buildings are designed to move, and sealing joints rigidly causes cupping and splitting rather than keeping water out.\u003C/p\u003E\r\n\r\n\u003Ch2\u003EWhy Should You Buy a PT Summerhouse From Garden Buildings Direct?\u003C/h2\u003E\r\n\u003Cp\u003EOur summerhouses are built from European spruce, with 11mm tongue and groove panels that interlock to give a smooth face and help resist water penetration.\u003C/p\u003E\r\n\u003Cp\u003EThey\u0027re roomy enough to suit a variety of uses, including an entertainment room, a games room or a home office.\u003C/p\u003E\r\n\r\n\u003Ch2\u003EWhat Shapes and Styles Do Our Pressure-Treated Summerhouses Come In?\u003C/h2\u003E\r\n\u003Cp\u003EYou can choose from a modern veranda or the popular pent roof, which slopes gently so rainwater runs off rather than pooling. Our \u003Ca href=\u0022https://www.gardenbuildingsdirect.co.uk/corner-summerhouses\u0022\u003Ecorner summerhouses\u003C/a\u003E fit neatly into a corner if garden space is tight.\u003C/p\u003E\r\n\u003Cp\u003EThe range runs from the \u003Ca href=\u0022https://www.gardenbuildingsdirect.co.uk/summerhouses/harper-summerhouse\u0022\u003EBillyOh Harper\u003C/a\u003E Tongue and Groove Apex Summerhouse up to larger models.\u003C/p\u003E\r\n\u003Cp\u003EMost garden buildings of this kind fall under permitted development, but size, height and how close the building sits to a boundary all affect it \u2014 and using it as living accommodation changes things again. See our \u003Ca href=\u0022https://www.gardenbuildingsdirect.co.uk/resource/outbuildings-garden-sheds-planning-permission-england/\u0022\u003Eguide to planning permission for outbuildings\u003C/a\u003E, and check with your local planning authority before you buy. Choosing pressure treatment makes no difference to planning.\u003C/p\u003E\r\n\r\n\u003Ch3\u003ESize and Style\u003C/h3\u003E\r\n\u003Cp\u003EAcross the summerhouse range you\u0027ll find \u003Ca href=\u0022https://www.gardenbuildingsdirect.co.uk/pent-summerhouses\u0022\u003Epent roof models\u003C/a\u003E, apex and reverse apex models, and corner summerhouses.\u003C/p\u003E\r\n\u003Cp\u003EAll our models use large double doors so you can open the summerhouse out onto your garden, with glazed windows for natural light. We also have pressure-treated log cabin summerhouses, such as the \u003Ca href=\u0022https://www.gardenbuildingsdirect.co.uk/log-cabins/billyoh-darcy-log-cabin-summerhouse\u0022\u003EDarcy Log Cabin summerhouse\u003C/a\u003E.\u003C/p\u003E\r\n\r\n\u003Ch3\u003ECladding and Timber\u003C/h3\u003E\r\n\u003Cp\u003EOur tongue and groove cladding interlocks to give a smooth face and resist water penetration, and cladding thickness is selectable on many models so you can pick what suits your garden and how you\u0027ll use the building.\u003C/p\u003E\r\n\u003Cp\u003ETongue and groove buildings carry a \u003Cstrong\u003E10-year guarantee\u003C/strong\u003E covering rot, wood decay and insect infestation, subject to annual treatment. Adding pressure treatment raises that to a \u003Cstrong\u003E15-year guarantee\u003C/strong\u003E covering the same.\u003C/p\u003E\r\n\r\n\u003Ch3\u003EInstallation\u003C/h3\u003E\r\n\u003Cp\u003EAssembly is straightforward. Follow the instructions provided with your order and two people can put a BillyOh building up with basic tools \u2014 a drill, a level and a hammer. Whether it\u0027s the \u003Ca href=\u0022https://www.gardenbuildingsdirect.co.uk/summerhouses/ivy-summerhouse\u0022\u003EIvy Summerhouse\u003C/a\u003E or the \u003Ca href=\u0022https://www.gardenbuildingsdirect.co.uk/summerhouses/petra-summerhouse\u0022\u003EPetra Apex Summerhouse\u003C/a\u003E, it\u0027s a weekend job rather than a project.\u003C/p\u003E\r\n\u003Cp\u003ECheck the parts against the delivery note before you start, and wait until the building is up before you treat or paint it. Once components have been painted or stained they\u0027re classed as accepted, so they can\u0027t be returned or exchanged if anything turns out to be wrong.\u003C/p\u003E\r\n\r\n\u003Ch3\u003EGarden Buildings Direct Guarantee\u003C/h3\u003E\r\n\u003Cp\u003EPressure-treated buildings carry a \u003Cstrong\u003E15-year guarantee\u003C/strong\u003E against rot, decay and insect infestation \u2014 five years longer than our standard tongue and groove guarantee.\u003C/p\u003E\r\n\r\n\u003Ch2\u003EDelivery of Your Garden Building\u003C/h2\u003E\r\n\u003Cp\u003EIf a pressure treated summerhouse looks like the right fit, our customer service team can talk you through the options and the delivery process. Free delivery is available to most postcodes, though some areas are excluded \u2014 enter your delivery address during the order process and we\u0027ll confirm whether yours qualifies. See our \u003Ca href=\u0022https://www.gardenbuildingsdirect.co.uk/help/delivery\u0022\u003Edelivery page\u003C/a\u003E for current coverage.\u003C/p\u003E","OGImage":""},"page":1,"totalPages":1,"filterPriceMax":15000,"currentFilterPrice":0,"SEOContent":{"Title":"Pressure Treated Summerhouses","TopDescription":"\u003Cp\u003EOur \u003Ca href=\u0022https://www.gardenbuildingsdirect.co.uk/summerhouses\u0022\u003Esummerhouses\u003C/a\u003E range from traditional to log cabin styles, and pressure treatment is available as an option on the models below. Select it on the product page when you choose your size and specification.\u003C/p\u003E\r\n\u003Cp\u003EPressure treatment forces preservative deep into the timber rather than leaving it on the surface, so the protection lasts longer and needs less topping up. Pressure-treated buildings carry our \u003Cstrong\u003E15-year guarantee against rot, decay and insect infestation\u003C/strong\u003E.\u003C/p\u003E","BottomDescription":"\u003Ch2\u003EBuy a Pressure Treated Summerhouse\u003C/h2\u003E\r\n\u003Cp\u003EHere at Garden Buildings Direct, we offer pressure treatment as an option across our summerhouse range, to suit all types of garden and homeowner. Our \u003Ca href=\u0022https://www.gardenbuildingsdirect.co.uk/contemporary-log-cabins\u0022\u003Econtemporary log cabins\u003C/a\u003E are designed with a sleek pent roof for a modern feel, while our more \u003Ca href=\u0022https://www.gardenbuildingsdirect.co.uk/traditional-summerhouses\u0022\u003Etraditional summerhouses\u003C/a\u003E include the tried and tested apex roof.\u003C/p\u003E\r\n\u003Cp\u003EIt\u0027s worth considering if you\u0027d rather spend less time on upkeep, and it carries a longer guarantee.\u003C/p\u003E\r\n\u003Cp\u003ENot sure which type you need? Our \u003Ca href=\u0022https://www.gardenbuildingsdirect.co.uk/blog/summerhouses-the-ultimate-guide/\u0022\u003Esummerhouse buying guide\u003C/a\u003E can help.\u003C/p\u003E\r\n\r\n\u003Ch2\u003EWhat Are Pressure Treated Summerhouses?\u003C/h2\u003E\r\n\u003Cp\u003EPressure treatment costs more up front, but it needs less maintenance than surface treatments and carries a longer guarantee. It\u0027s an option you select on each product page when choosing your size and specification.\u003C/p\u003E\r\n\u003Cp\u003EThe timber goes into a sealed cylinder, where a vacuum draws air out of the wood before preservative is forced in under pressure. That gets the preservative deep into the fibres rather than leaving it on the surface, which is why the protection against rot, decay and insect attack lasts longer.\u003C/p\u003E\r\n\u003Cp\u003EPressure treatment doesn\u0027t change the timber\u0027s structural strength \u2014 that comes from the species and the section size. What it does is resist biological decay.\u003C/p\u003E\r\n\r\n\u003Ch3\u003EMaintenance\u003C/h3\u003E\r\n\u003Cp\u003EPressure-treated timber doesn\u0027t need the annual treatment a spray-treated or untreated building does.\u003C/p\u003E\r\n\u003Cp\u003ETreatment isn\u0027t the same as waterproofing, though, as pressure treatment serves to prevent rot-based issues rather than keeping water out. A coating of water-resistant paint after the treatment has dried can help to prevent water ingress, and there won\u0027t be as much pressure to keep this topped up. Keep the roof covering sound, make sure the base keeps the building clear of the ground, and allow airflow through the building so moisture doesn\u0027t sit inside. Don\u0027t fill gaps between timber panels with caulk, filler or expanding foam \u2014 panel buildings are designed to move, and sealing joints rigidly causes cupping and splitting rather than keeping water out.\u003C/p\u003E\r\n\r\n\u003Ch2\u003EWhy Should You Buy a PT Summerhouse From Garden Buildings Direct?\u003C/h2\u003E\r\n\u003Cp\u003EOur summerhouses are built from European spruce, with 11mm tongue and groove panels that interlock to give a smooth face and help resist water penetration.\u003C/p\u003E\r\n\u003Cp\u003EThey\u0027re roomy enough to suit a variety of uses, including an entertainment room, a games room or a home office.\u003C/p\u003E\r\n\r\n\u003Ch2\u003EWhat Shapes and Styles Do Our Pressure-Treated Summerhouses Come In?\u003C/h2\u003E\r\n\u003Cp\u003EYou can choose from a modern veranda or the popular pent roof, which slopes gently so rainwater runs off rather than pooling. Our \u003Ca href=\u0022https://www.gardenbuildingsdirect.co.uk/corner-summerhouses\u0022\u003Ecorner summerhouses\u003C/a\u003E fit neatly into a corner if garden space is tight.\u003C/p\u003E\r\n\u003Cp\u003EThe range runs from the \u003Ca href=\u0022https://www.gardenbuildingsdirect.co.uk/summerhouses/harper-summerhouse\u0022\u003EBillyOh Harper\u003C/a\u003E Tongue and Groove Apex Summerhouse up to larger models.\u003C/p\u003E\r\n\u003Cp\u003EMost garden buildings of this kind fall under permitted development, but size, height and how close the building sits to a boundary all affect it \u2014 and using it as living accommodation changes things again. See our \u003Ca href=\u0022https://www.gardenbuildingsdirect.co.uk/resource/outbuildings-garden-sheds-planning-permission-england/\u0022\u003Eguide to planning permission for outbuildings\u003C/a\u003E, and check with your local planning authority before you buy. Choosing pressure treatment makes no difference to planning.\u003C/p\u003E\r\n\r\n\u003Ch3\u003ESize and Style\u003C/h3\u003E\r\n\u003Cp\u003EAcross the summerhouse range you\u0027ll find \u003Ca href=\u0022https://www.gardenbuildingsdirect.co.uk/pent-summerhouses\u0022\u003Epent roof models\u003C/a\u003E, apex and reverse apex models, and corner summerhouses.\u003C/p\u003E\r\n\u003Cp\u003EAll our models use large double doors so you can open the summerhouse out onto your garden, with glazed windows for natural light. We also have pressure-treated log cabin summerhouses, such as the \u003Ca href=\u0022https://www.gardenbuildingsdirect.co.uk/log-cabins/billyoh-darcy-log-cabin-summerhouse\u0022\u003EDarcy Log Cabin summerhouse\u003C/a\u003E.\u003C/p\u003E\r\n\r\n\u003Ch3\u003ECladding and Timber\u003C/h3\u003E\r\n\u003Cp\u003EOur tongue and groove cladding interlocks to give a smooth face and resist water penetration, and cladding thickness is selectable on many models so you can pick what suits your garden and how you\u0027ll use the building.\u003C/p\u003E\r\n\u003Cp\u003ETongue and groove buildings carry a \u003Cstrong\u003E10-year guarantee\u003C/strong\u003E covering rot, wood decay and insect infestation, subject to annual treatment. Adding pressure treatment raises that to a \u003Cstrong\u003E15-year guarantee\u003C/strong\u003E covering the same.\u003C/p\u003E\r\n\r\n\u003Ch3\u003EInstallation\u003C/h3\u003E\r\n\u003Cp\u003EAssembly is straightforward. Follow the instructions provided with your order and two people can put a BillyOh building up with basic tools \u2014 a drill, a level and a hammer. Whether it\u0027s the \u003Ca href=\u0022https://www.gardenbuildingsdirect.co.uk/summerhouses/ivy-summerhouse\u0022\u003EIvy Summerhouse\u003C/a\u003E or the \u003Ca href=\u0022https://www.gardenbuildingsdirect.co.uk/summerhouses/petra-summerhouse\u0022\u003EPetra Apex Summerhouse\u003C/a\u003E, it\u0027s a weekend job rather than a project.\u003C/p\u003E\r\n\u003Cp\u003ECheck the parts against the delivery note before you start, and wait until the building is up before you treat or paint it. Once components have been painted or stained they\u0027re classed as accepted, so they can\u0027t be returned or exchanged if anything turns out to be wrong.\u003C/p\u003E\r\n\r\n\u003Ch3\u003EGarden Buildings Direct Guarantee\u003C/h3\u003E\r\n\u003Cp\u003EPressure-treated buildings carry a \u003Cstrong\u003E15-year guarantee\u003C/strong\u003E against rot, decay and insect infestation \u2014 five years longer than our standard tongue and groove guarantee.\u003C/p\u003E\r\n\r\n\u003Ch2\u003EDelivery of Your Garden Building\u003C/h2\u003E\r\n\u003Cp\u003EIf a pressure treated summerhouse looks like the right fit, our customer service team can talk you through the options and the delivery process. Free delivery is available to most postcodes, though some areas are excluded \u2014 enter your delivery address during the order process and we\u0027ll confirm whether yours qualifies. See our \u003Ca href=\u0022https://www.gardenbuildingsdirect.co.uk/help/delivery\u0022\u003Edelivery page\u003C/a\u003E for current coverage.\u003C/p\u003E"},"FAQs":[{"Id":296,"CategoryId":4435,"Question":"What is pressure treated timber?","Answer":"\u003Cp\u003EUnlike dip-treated timber where surface-deep preservatives are \u003Cem\u003Epainted\u003C/em\u003E on, pressure-treated timber has had chemicals introduced to it in a vacuum, allowing them to penetrate deep into the wood. As such, it offers much better (and longer-lasting) protection against things like rot and insect infestation whilst being lower maintenance in the long-run.\u003C/p\u003E","Position":0,"IsDeleted":false,"FilterId":0,"StoreId":0},{"Id":297,"CategoryId":4435,"Question":"What is a pressure treated summer house?","Answer":"\u003Cp\u003EA pressure-treated summer house is a summerhouse made from pressure treated (in the case of BillyOh products) high-quality European sourced timber. \u003C/p\u003E","Position":1,"IsDeleted":false,"FilterId":0,"StoreId":0},{"Id":298,"CategoryId":4435,"Question":"Do I need planning permission for a pressure-treated garden summerhouse?","Answer":"\u003Cp\u003EGarden buildings of this kind usually fall under permitted development, so planning permission often isn\u0027t needed. But size, height and how close the building sits to a boundary all affect it, and using it as a home office or living accommodation changes things again.\u003C/p\u003E\n\u003Cp\u003ESee our \u003Ca href=\u0022https://www.gardenbuildingsdirect.co.uk/resource/outbuildings-garden-sheds-planning-permission-england/\u0022\u003Eguide to planning permission for outbuildings\u003C/a\u003E for the detail, and check with your local planning authority before you buy. \u003Cstrong\u003EChoosing pressure treatment makes no difference to planning permission.\u003C/strong\u003E\u003C/p\u003E","Position":2,"IsDeleted":false,"FilterId":0,"StoreId":3},{"Id":299,"CategoryId":4435,"Question":"What is the best base to put a garden summer house on?","Answer":"\u003Cp\u003EA structurally sound base is essential in ensuring your summer house can last as long as possible. Your summer house base should be flat and level, so as to avoid cracking and breaking the timber or putting undue stress on window and door frames which could shatter glass. Your choices vary from a concrete base for your summer house to an \u003Cspan style=\u0022color: #ff9900;\u0022\u003E\u003Ca style=\u0022color: #ff9900;\u0022 href=\u0022https://www.gardenbuildingsdirect.co.uk/bases/billyoh-ecobase-foundation-system\u0022\u003Eecobase\u003C/a\u003E\u003C/span\u003E or timber sub-floor. That\u0026rsquo;s why we offer many of these as add-ons upon purchasing your summer house.\u003C/p\u003E","Position":3,"IsDeleted":false,"FilterId":0,"StoreId":0},{"Id":300,"CategoryId":4435,"Question":"How do you stop damp in a pressure treated garden summerhouse?","Answer":"\u003Cp\u003ECondensation can build up in any garden building as temperatures change through the year. A few things help:\u003C/p\u003E\n\u003Cul\u003E\n\u003Cli\u003EMake sure there\u0027s airflow through the building, including in winter \u2014 opening the doors and windows on dry days lets it breathe\u003C/li\u003E\n\u003Cli\u003EDon\u0027t store damp items inside\u003C/li\u003E\n\u003Cli\u003EBuild on a raised, level base with no direct ground contact\u003C/li\u003E\n\u003Cli\u003EKeep the roof covering sound, since most damp problems start with water getting in from above\u003C/li\u003E\n\u003Cli\u003EConsider a vapour membrane if you\u0027re lining or insulating the building\u003C/li\u003E\n\u003C/ul\u003E\n\u003Cp\u003ETreatment is a separate matter \u2014 pressure treatment resists rot and insect attack, but it won\u0027t stop condensation, which is about air and temperature rather than the timber. For more, see \u003Ca href=\u0022https://www.gardenbuildingsdirect.co.uk/blog/how-to-damp-proof-a-shed-2021/\u0022\u003Eour guide to damp proofing\u003C/a\u003E.\u003C/p\u003E","Position":4,"IsDeleted":false,"FilterId":0,"StoreId":3},{"Id":301,"CategoryId":4435,"Question":"What are the best summerhouses?","Answer":"\u003Cul\u003E\n\u003Cli aria-level=\u00221\u0022\u003E\u003Ca href=\u0022https://www.gardenbuildingsdirect.co.uk/summerhouses/bella-pent-summerhouse/26863#pressuretreated\u0022\u003E\u003Cstrong\u003E\u003Cspan style=\u0022color: #ff9900;\u0022\u003EBillyOh Bella Tongue and Groove Pent Summerhouse\u003C/span\u003E\u003C/strong\u003E\u003C/a\u003E\u003C/li\u003E\n\u003C/ul\u003E\n\u003Cp\u003EThe long and plentiful windows that wrap around the front gives the Bella an ultra-modern and stylish look. Whilst the adaptable door placement means you have the ultimate say in how the summerhouse looks in your garden.\u003C/p\u003E\n\u003Cul\u003E\n\u003Cli aria-level=\u00221\u0022\u003E\u003Ca href=\u0022https://www.gardenbuildingsdirect.co.uk/summerhouses/picton-summerhouse/26779#pressuretreated\u0022\u003E\u003Cstrong\u003E\u003Cspan style=\u0022color: #ff9900;\u0022\u003EBillyOh Picton Corner Summerhouse\u003C/span\u003E\u003C/strong\u003E\u003C/a\u003E\u003C/li\u003E\n\u003C/ul\u003E\n\u003Cp\u003EMaximise your space with a building designed specifically for the corner of your garden. The large windows, fully glazed doors and tall roof offer an abundance of natural light while offering you a large space to relax or entertain in the comfort of your garden.\u0026nbsp;\u003C/p\u003E\n\u003Cul\u003E\n\u003Cli aria-level=\u00221\u0022\u003E\u003Cspan style=\u0022color: #ff9900;\u0022\u003E\u003Ca style=\u0022color: #ff9900;\u0022 href=\u0022https://www.gardenbuildingsdirect.co.uk/summerhouses/petra-summerhouse/26855#pressuretreated\u0022\u003E\u003Cstrong\u003EBillyOh Petra Tongue and Groove Reverse Apex Summerhouse\u003C/strong\u003E\u003C/a\u003E\u003C/span\u003E\u003C/li\u003E\n\u003C/ul\u003E\n\u003Cp\u003EThe Petra summerhouse is a great companion during the summer months and provides a cosy relaxing space throughout the rest of the year. The large windows and optional door placement allows you to get as much natural light as possible, great for entertaining.\u003C/p\u003E\n\u003Cul\u003E\n\u003Cli aria-level=\u00221\u0022\u003E\u003Ca href=\u0022https://www.gardenbuildingsdirect.co.uk/summerhouses/tessa-summerhouse/26613#pressuretreated\u0022\u003E\u003Cstrong\u003E\u003Cspan style=\u0022color: #ff9900;\u0022\u003EBillyOh Tessa Tongue and Groove Reverse Apex Summerhouse\u003C/span\u003E\u003C/strong\u003E\u003C/a\u003E\u003C/li\u003E\n\u003C/ul\u003E\n\u003Cp\u003EThe breathtaking long windows, multi-access doors and strong construction make this summerhouse stand out from the crowd and a great addition for any garden!\u003C/p\u003E","Position":5,"IsDeleted":false,"FilterId":0,"StoreId":0},{"Id":302,"CategoryId":4435,"Question":"How to build a summerhouse","Answer":"\u003Cp\u003EOur range of BillyOh summerhouses are all designed to be easy and simple to assemble. Using the digital assembly instructions included in your order confirmation and with a team of at least 2 people, the handy pre-assembled panels mean you will have your BillyOh building up in no time! You\u0026rsquo;ll just require some basic tools like a drill and bits, level, and hammer.\u003C/p\u003E","Position":6,"IsDeleted":false,"FilterId":0,"StoreId":0},{"Id":303,"CategoryId":4435,"Question":"Do I need a pressure treated summer house?","Answer":"\u003Cp\u003EIt\u0027s worth considering in the UK climate. Damp air and persistent rain mean timber spends a lot of the year wet, and wet timber is what attracts fungi and wood-boring insects \u2014 woodworm in particular. Pressure treatment resists both rot and insect attack, and it does so throughout the timber rather than just on the surface.\u003C/p\u003E\n\u003Cp\u003EIf you\u0027d rather not retreat the building every year, and you want the longer guarantee, it\u0027s the option to take.\u003C/p\u003E","Position":7,"IsDeleted":false,"FilterId":0,"StoreId":3},{"Id":304,"CategoryId":4435,"Question":"How long does a pressure treated summer house last?","Answer":"\u003Cp\u003EPressure treatment resists rot, decay and insect attack for far longer than a surface treatment, which is why our pressure-treated summerhouses carry a 15-year guarantee covering all three. \u003C/p\u003E\n\u003Cp\u003EHow long the building itself lasts also depends on the base, the roof covering and how well water is kept away from the timber.\u003C/p\u003E","Position":8,"IsDeleted":false,"FilterId":0,"StoreId":3},{"Id":306,"CategoryId":4435,"Question":"Is pressure treated or dip treated wood better?","Answer":"\u003Cp\u003EPressure treatment allows preservatives and chemicals to penetrate right into the grain of the wood, whereas dip-treatment refers to the practice of treating wood with a water-based product to give it short-term protection from rot and bug infestation. It protects it on the surface, but the impact will fade over a much shorter period of time. This means it\u0026rsquo;ll need re-treating at regular intervals.\u003C/p\u003E","Position":9,"IsDeleted":false,"FilterId":0,"StoreId":0},{"Id":307,"CategoryId":4435,"Question":"Is treated timber waterproof?","Answer":"\u003Cp\u003ENo. Pressure treatment resists rot and insect attack, but it doesn\u0027t make timber waterproof \u2014 no treatment does. What keeps a summerhouse dry is the roof covering, a level base that holds the building clear of the ground, and enough airflow inside that moisture doesn\u0027t sit against the timber.\u003C/p\u003E\n\u003Cp\u003EDon\u0027t fill gaps between panels with caulk, filler or expanding foam. Timber panel buildings are designed to move, and tongue and groove cladding accommodates seasonal expansion and contraction. 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FAQs

Unlike dip-treated timber where surface-deep preservatives are painted on, pressure-treated timber has had chemicals introduced to it in a vacuum, allowing them to penetrate deep into the wood. As such, it offers much better (and longer-lasting) protection against things like rot and insect infestation whilst being lower maintenance in the long-run.

A pressure-treated summer house is a summerhouse made from pressure treated (in the case of BillyOh products) high-quality European sourced timber.

Garden buildings of this kind usually fall under permitted development, so planning permission often isn't needed. But size, height and how close the building sits to a boundary all affect it, and using it as a home office or living accommodation changes things again.

See our guide to planning permission for outbuildings for the detail, and check with your local planning authority before you buy. Choosing pressure treatment makes no difference to planning permission.

A structurally sound base is essential in ensuring your summer house can last as long as possible. Your summer house base should be flat and level, so as to avoid cracking and breaking the timber or putting undue stress on window and door frames which could shatter glass. Your choices vary from a concrete base for your summer house to an ecobase or timber sub-floor. That’s why we offer many of these as add-ons upon purchasing your summer house.

Condensation can build up in any garden building as temperatures change through the year. A few things help:

  • Make sure there's airflow through the building, including in winter — opening the doors and windows on dry days lets it breathe
  • Don't store damp items inside
  • Build on a raised, level base with no direct ground contact
  • Keep the roof covering sound, since most damp problems start with water getting in from above
  • Consider a vapour membrane if you're lining or insulating the building

Treatment is a separate matter — pressure treatment resists rot and insect attack, but it won't stop condensation, which is about air and temperature rather than the timber. For more, see our guide to damp proofing.

The long and plentiful windows that wrap around the front gives the Bella an ultra-modern and stylish look. Whilst the adaptable door placement means you have the ultimate say in how the summerhouse looks in your garden.

Maximise your space with a building designed specifically for the corner of your garden. The large windows, fully glazed doors and tall roof offer an abundance of natural light while offering you a large space to relax or entertain in the comfort of your garden. 

The Petra summerhouse is a great companion during the summer months and provides a cosy relaxing space throughout the rest of the year. The large windows and optional door placement allows you to get as much natural light as possible, great for entertaining.

The breathtaking long windows, multi-access doors and strong construction make this summerhouse stand out from the crowd and a great addition for any garden!

Our range of BillyOh summerhouses are all designed to be easy and simple to assemble. Using the digital assembly instructions included in your order confirmation and with a team of at least 2 people, the handy pre-assembled panels mean you will have your BillyOh building up in no time! You’ll just require some basic tools like a drill and bits, level, and hammer.

It's worth considering in the UK climate. Damp air and persistent rain mean timber spends a lot of the year wet, and wet timber is what attracts fungi and wood-boring insects — woodworm in particular. Pressure treatment resists both rot and insect attack, and it does so throughout the timber rather than just on the surface.

If you'd rather not retreat the building every year, and you want the longer guarantee, it's the option to take.

Pressure treatment resists rot, decay and insect attack for far longer than a surface treatment, which is why our pressure-treated summerhouses carry a 15-year guarantee covering all three.

How long the building itself lasts also depends on the base, the roof covering and how well water is kept away from the timber.

Pressure treatment allows preservatives and chemicals to penetrate right into the grain of the wood, whereas dip-treatment refers to the practice of treating wood with a water-based product to give it short-term protection from rot and bug infestation. It protects it on the surface, but the impact will fade over a much shorter period of time. This means it’ll need re-treating at regular intervals.

No. Pressure treatment resists rot and insect attack, but it doesn't make timber waterproof — no treatment does. What keeps a summerhouse dry is the roof covering, a level base that holds the building clear of the ground, and enough airflow inside that moisture doesn't sit against the timber.

Don't fill gaps between panels with caulk, filler or expanding foam. Timber panel buildings are designed to move, and tongue and groove cladding accommodates seasonal expansion and contraction. Sealing the joints rigidly causes cupping and splitting rather than keeping water out, and it traps moisture inside the structure.

For more, see our guide on how to damp proof your summer house.

Yes, but timing matters. Pressure-treated timber arrives with a higher moisture content, so it needs to dry (for 4-6 months) to prevent moisture being trapped inside. Use an exterior-grade paint or stain suited to treated timber, over an appropriate primer.

One thing to know before you start: check all the parts against your delivery note first, and wait until the building is assembled. Once components have been painted or stained they're classed as accepted, so they can't be returned or exchanged if anything turns out to be incorrect.

Buy a Pressure Treated Summerhouse

Here at Garden Buildings Direct, we offer pressure treatment as an option across our summerhouse range, to suit all types of garden and homeowner. Our contemporary log cabins are designed with a sleek pent roof for a modern feel, while our more traditional summerhouses include the tried and tested apex roof.

It's worth considering if you'd rather spend less time on upkeep, and it carries a longer guarantee.

Not sure which type you need? Our summerhouse buying guide can help.

What Are Pressure Treated Summerhouses?

Pressure treatment costs more up front, but it needs less maintenance than surface treatments and carries a longer guarantee. It's an option you select on each product page when choosing your size and specification.

The timber goes into a sealed cylinder, where a vacuum draws air out of the wood before preservative is forced in under pressure. That gets the preservative deep into the fibres rather than leaving it on the surface, which is why the protection against rot, decay and insect attack lasts longer.

Pressure treatment doesn't change the timber's structural strength — that comes from the species and the section size. What it does is resist biological decay.

Maintenance

Pressure-treated timber doesn't need the annual treatment a spray-treated or untreated building does.

Treatment isn't the same as waterproofing, though, as pressure treatment serves to prevent rot-based issues rather than keeping water out. A coating of water-resistant paint after the treatment has dried can help to prevent water ingress, and there won't be as much pressure to keep this topped up. Keep the roof covering sound, make sure the base keeps the building clear of the ground, and allow airflow through the building so moisture doesn't sit inside. Don't fill gaps between timber panels with caulk, filler or expanding foam — panel buildings are designed to move, and sealing joints rigidly causes cupping and splitting rather than keeping water out.

Why Should You Buy a PT Summerhouse From Garden Buildings Direct?

Our summerhouses are built from European spruce, with 11mm tongue and groove panels that interlock to give a smooth face and help resist water penetration.

They're roomy enough to suit a variety of uses, including an entertainment room, a games room or a home office.

What Shapes and Styles Do Our Pressure-Treated Summerhouses Come In?

You can choose from a modern veranda or the popular pent roof, which slopes gently so rainwater runs off rather than pooling. Our corner summerhouses fit neatly into a corner if garden space is tight.

The range runs from the BillyOh Harper Tongue and Groove Apex Summerhouse up to larger models.

Most garden buildings of this kind fall under permitted development, but size, height and how close the building sits to a boundary all affect it — and using it as living accommodation changes things again. See our guide to planning permission for outbuildings, and check with your local planning authority before you buy. Choosing pressure treatment makes no difference to planning.

Size and Style

Across the summerhouse range you'll find pent roof models, apex and reverse apex models, and corner summerhouses.

All our models use large double doors so you can open the summerhouse out onto your garden, with glazed windows for natural light. We also have pressure-treated log cabin summerhouses, such as the Darcy Log Cabin summerhouse.

Cladding and Timber

Our tongue and groove cladding interlocks to give a smooth face and resist water penetration, and cladding thickness is selectable on many models so you can pick what suits your garden and how you'll use the building.

Tongue and groove buildings carry a 10-year guarantee covering rot, wood decay and insect infestation, subject to annual treatment. Adding pressure treatment raises that to a 15-year guarantee covering the same.

Installation

Assembly is straightforward. Follow the instructions provided with your order and two people can put a BillyOh building up with basic tools — a drill, a level and a hammer. Whether it's the Ivy Summerhouse or the Petra Apex Summerhouse, it's a weekend job rather than a project.

Check the parts against the delivery note before you start, and wait until the building is up before you treat or paint it. Once components have been painted or stained they're classed as accepted, so they can't be returned or exchanged if anything turns out to be wrong.

Garden Buildings Direct Guarantee

Pressure-treated buildings carry a 15-year guarantee against rot, decay and insect infestation — five years longer than our standard tongue and groove guarantee.

Delivery of Your Garden Building

If a pressure treated summerhouse looks like the right fit, our customer service team can talk you through the options and the delivery process. Free delivery is available to most postcodes, though some areas are excluded — enter your delivery address during the order process and we'll confirm whether yours qualifies. See our delivery page for current coverage.