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Comfort is one of the ways a garden room proves its worth. That depends on more than size, timber thickness, or roof design—it also comes down to glazing. Double-glazed garden rooms, in particular, show why it can completely change the space. Keep reading to learn more about the impact your window choice has when shopping for a garden room.
Single Glazing vs Double Glazing in Garden Room Windows
Single-glazed windows consist of one pane of glass within the window frame. This means there’s only one layer of glass or glaze. When you look closely, you’ll see one sheet of glass separating the inside and outside of the building.
Single glazing loses heat fast. That’s a problem in winter, but on hot days it can help keep the room cooler. The good news is it’s cheaper than double glazing. Then again, it practically gives no insulation or soundproofing and can be fragile.
Double glazing involves two glass sheets, separated by a small air space in the middle. This space is either filled by argon gas (most common) or emptied to vacuum (rare) to achieve full insulation. It’s also energy-efficient, retaining heat for longer due to its slow thermal transfer. And thanks to the two layers of glass, double glazing is much more robust, especially on impact.
How Double Glazing Improves a Garden Room or Log Cabin
Double glazing isn’t just about the windows looking better. It changes how your garden room feels when you’re inside it. Let’s break it down.
Warmth in winter
If you’ve used a heater in a single-glazed cabin, you’ll know the heat doesn’t last. The moment you turn it off, the room cools down fast, which makes it hard to stay comfortable for more than a short while. That also means the heater runs for longer, and the cost adds up.
Double glazing changes that. The extra layer of glass holds in more of the warmth, so the temperature inside stays steady for longer. You won’t need the heater blasting all day. Over a cold season, that difference saves money and makes the garden room practical to use every day.
Take the BillyOh Fraya Pent Log Cabin, for instance. You can upgrade to double glazing for toughened glass and maximum insulation. This makes it a lovely private getaway to relax with the family, even when the rain is pouring.
Some of our customers used theirs as a garden bar, a dance studio, a salon, an office, and a games room. Imagine what you could do with yours!
Cooler in summer
As a form of insulation, double glazing reduces the rate of heat transfer both ways. That means your garden room won’t heat up or cool down as quickly as it would with single glazing. In summer, this helps slow the build-up of heat indoors, especially when paired with good ventilation or shading. The result is a space that feels more stable and comfortable, even on warm days.
Double glazing won’t completely stop the space becoming very hot inside, but it helps slow down the process, giving you a chance to open the door, turn on a fan, and get cool air circulating before it can become an oven.
Noise control
Double glazing adds a barrier between you and the outside world. Two panes of glass with a gap in the middle block more sound than a single sheet can. That difference matters if you’re on work calls, recording music, or just want peace.
It won’t make the room silent, but it does cut down noise from neighbours, passing cars, or lawnmowers. The BillyOh Outpost Insulated is a perfect year-round office for this reason. Its 44mm double-glazed windows are paired with 66mm insulated wall panels – win-win!
Less condensation
Double glazing helps reduce surface condensation because the inner pane stays closer to room temperature. When the glass is warmer, water vapour in the air is less likely to settle on it, compared to single panes that often mist up on cold mornings. A drier pane means less chance of moisture running into the timber around the frame.
That said, avoiding condensation also depends on controlling humidity inside the room — good ventilation and heating play a big role. A warmer, well-aired space is less likely to suffer from misted windows.
It’s also worth noting that double glazing can sometimes develop condensation between the panes if the seals fail. This is a different problem but can be remedied by replacing the affected unit. On wooden garden rooms, swapping out panes is usually a straightforward and affordable job.
Round-up
Choosing double glazing affects more than just the windows. It makes the room ideal for year-round use, reduces outside noise, and keeps damp under control. Bonus is that the windows are stronger, safer, and last longer, which adds real value to your garden room.
Small upgrades like this have a big impact on how you use and enjoy the room every day. So when browsing options online, take advantage of the double glazing upgrade! Although it may cost a little more upfront, it will be worth it in the long run.
Our garden buildings give you that option for summerhouses, garden offices, and more.
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