Bug-Proofing Your Shed: The Ultimate Guide

You need to bug-proof your garden shed. Here’s why:

Imagine the scene.

It’s spring!

The warm sunshine is providing a welcome respite from the horrendous winter snow and rain. The leaves are back on the trees. The evenings are getting lighter.

Sounds great, doesn’t it?

But for shed owners the world over, the seasonal cycle brings with it some especially uninvited guests.


That’s right. While the sight of a bee pollinating a flower might be a treat you’ve been wishing for since the end of September, we expect that pesky house-flies and midges fluttering around your head weren’t top of your excited-to-see list. And, while to some garden folk they are just a nuisance, for someone with a garden shed, they can end up wreaking havoc if they get inside.

Never fear though. We’ve put together this handy guide – a concise list of ten ways that you can keep your bug friends where they belong – outside your shed.

1. Keep your shed gap-free

BillyOh Storer Tongue and Groove Apex Shed

One of the most obvious ways to bug proof your shed is to ensure that there are no gaps and to seal off all the crevices within the shed. Doing this can provides ample security and is probably the simplest and most effective way to stop bugs from entering. To be certain there are no gaps, use silicone sealant on all the relevant joints; where you can, cover up around windows and doors as well.

You could also consider insulating your shed to protect it from both bugs and rotting.

2. Spray Insecticides

Another way to bug proof your shed is to spray your shed with pesticides. Garden centres and hardware stores should both stock a range of brands and varieties for use on all types of materials and insects.

Simply cover your shed with insecticides and admire your handiwork.

3. Use Repellent Lining Paper

Our third easy way to prevent insects from entering your shed is to lay down repellant. This technique works especially well for spiders – they just seem to love the summer, don’t they? Repellent lining paper acts as a solid barrier to potential creepy crawlies. Cover any doors, windows, cladding gaps and other entrance points.

4. Remove Permanent Light Sources

Didn’t think of that one, did you?

If your shed is based near an outdoor light, or you’ve got a light source inside the building itself, it’s imperative that you keep it’s usage to a minimum, to prevent the inevitable swarm of moths, flies and other light lovers from infesting your shed.

Make sure you keep them turned off when not in use, and opt for energy-saving lightbulbs to reduce how much light is emitted – the brighter it is, the worse it’ll be.

5. Heavy-Duty Roofing Felt


Most sheds would look silly without felt anyway, but looking nice is one of the least valuable traits of the trusted green stuff.

Investing in some high quality, heavy-duty, polyester-backed felt makes it doubly difficult for any bugs to enter your shed through your roof.

If it’s the good stuff, it’s also an excellent way to make your shed warmer during winter and will help keep damp out.

We offer green mineral felt on all of our garden buildings at Garden Buildings Direct. A durable and watertight option, it won’t allow any water to get through and damage the roof.

Mineral felt is more durable than traditional sand felt, meaning that it does not need to be regularly replaced. It’s a long term, cost-effective option.

6. Decoy

For this trick, a spare cardboard box or another disused shed will come in handy. By installing a similar dark building, whether big or small, next to your actual shed, you’ll passively direct at least some of the potential bugs to the alternative option instead. This’ll decrease the numbers roaming around your more valued one quickly and effectively.

If you’re using a cardboard box, make it dark, maybe lay some food down, and make sure there are lots of gaps for entry!

7. Secure Your Windows and Doors

BillyOh Expert Tongue and Groove Pent Workshop

Entirely securing your shed windows and doors successfully is arguably one of the hardest things to do with regards to a bug-proof shed – especially if it’s for the purpose of keeping bugs out. Some little flies are that small that on occasion, you’ll find them in your dwelling with not a hint of how they might’ve got in. Chances are, a tiny gap somewhere avoided your detection.

Draft sealing all your windows and doors to make them airtight is the most surefire way of preventing bug ingress. The gaps around the thresholds can act as useful entrances for would-be wooden wanderers.

8. Clear Away Plants

Bugs love plants.

Sounds obvious, right?

Flowers and leaves are ideal residences for many bugs, providing shelter, food, water and protection from predators. If you’ve got any plants nearby, any bugs living in or on them might fancy a journey into your shed once in a while. You may want to consider ensuring that your garden shed is plant and weed-free, as bug migration is prevalent between plants and sheds.

If you are growing vegetables, try and do it away from your shed. This helps keep bugs out, but also prevents any reverse migration – you don’t want any shed-dwelling bugs to nibble your carrots while they’re off on a holiday.

9. Clean Up and Hoover

It sounds simple, but sweeping up and hoovering is a perfect way to bug-proof your shed. Spiders love dirt and dust, and will jump at the chance to take residence in the corner of your shed if it’s not clean.

Hoovering up cobwebs and getting rid of any piles of stuff will help reduce the number of spiders in your shed. Ensure you get into all the nooks and crannies – door frames, under furniture, corners and cracks.

Investing in a battery-powered, handheld vacuum can help here if you don’t have access to mains electricity in your shed. In addition, a small handheld vacuum allows you to reach corners and higher-up places much more easily than you would otherwise.

10. Peppermint Oil

Did you know that peppermint oil is a natural spider deterrent?

According to research, spiders hate the smell of natural oils and will stay away from them at all costs. Peppermint is a top choice, and is easy to find online and in supermarkets.

We recommend mixing 10-15 drops of oil into a small bottle of water (it can be tap water). Decant this into a bottle and spray it about the shed – making especially sure you cover all the cavities in which spiders could get in.

11. Cats


If you’re one of the U.K.’s eight million cat owners, you’re in luck.

Not only are cats a wonderful addition to any household, they’re also expert spider hunters, and will help you no end to bug proof your shed. Natural cat instincts will kick into play when a spider is about and they’ll soon be chasing it out of the shed.

The best bug solution? It requires no effort (apart from looking after your cat!)

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