Adding insulation to a solid brick wall underneath a bedroom bay window

If you’re considering adding insulation to a solid brick wall underneath a bedroom bay window, read on as we ‘fill’ you in.

Unlike cavity walls, most traditional, pre-1920s properties boast solid brick walls without insulation. Of course, this often leads to water penetration, damp and heating loss; a real problem for walls underneath bay windows!

Adding insulation to any area in your home can dramatically save on heating costs and make your home more comfortable.

So, adding insulation to solid brick walls underneath a bay window goes a long way in battling condensation, mould, draft and heating loss.

Can I add insulation to a solid brick wall underneath a bay window?

Many homeowners wonder if adding insulation to a solid brick wall underneath a bedroom bay window is possible.

Yes, you can. However, bay windows aren’t standard flat walls, so there’s more to this renovation job. The main thing is to ensure your type of insulation is suitable for a bay window.

We always recommend hiring an insulation specialist well-versed in insulation to ensure the job is done efficiently. It’s easy to find a qualified insulation specialist with the Checkatrade directory.

Adding insulation to a solid brick wall underneath a bedroom bay window

When adding insulation to a solid brick wall underneath a bedroom bay window, you can insulate from inside or outside. But it’s easier to focus on interior insulation.

Insulating a solid wall will cost more than standard cavity insulation. But it’s worth it when your heating bill lands on your doormat and you see all those savings!

To be effective, the insulation underneath your bay window needs to be installed correctly, with adequate ventilation to avoid moisture or mould issues.

Although you can insulate a solid brick wall from the outside, it’s easier to insulate the interior wall.

How to insulate solid brick walls in 4 steps

Here’s what you need to do;

1. Check your wall construction for the most suitable insulation – is your wall solid brick or stone?
2. Choose the best insulation material for your wall’s needs
3. Install your insulation using adhesive or mechanical fasteners; then seal, fill gaps and cover seams
4. Finish the wall with plasterboard and plaster

However, adding insulation to a brick wall underneath a bay window is not as easy as it sounds. It’s best to leave this type of renovation work to an insulation specialist. 

Learn how to find an insulation installer near you.

Internal solid wall insulation

Two of the more popular insulation methods include;

Rigid insulation boards come in various materials and thicknesses with excellent energy-saving properties.

Stud frames with infills are popular as various insulation materials can be used, like hemp, wood fibre, sheep wool, mineral wool, and even recycled bottles.

External solid wall insulation

Internal insulation can be more disruptive than external wall insulation as it might involve moving skirting boards, radiators or electrics. But, if you’re looking to insulate your whole house and give your home exterior a facelift, you could opt for external insulation.

External wall insulation is applied directly onto the solid brickwork or stone of your home’s exterior. The insulation is then coated with a plaster-like coating called render. Render is available in smooth, patterned or textured finishes for a delightful update to your home.

Remember to always get the advice of a trusted tradesperson like a builder or insulation specialist; they can give you the best advice based on your home’s needs.

It’s easy to check out our directory of trusted tradespeople. All you need to do is pop your postcode into the box below to get started.