If you don't have a cavity then you need to add some insulation to the inside walls.
Can You Add More Insulation To Existing Walls. How can you add insulation to existing walls? Here's how to insulate finished walls in an old house.
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If you don't, the increased cavity insulation will result in the sheathing being cooler. When looking to improve your home's insulation, can you add spray foam insulation to existing walls? Tim healey more cavity fill requires more continuous insulation.
A way that's becoming more popular is to paint your walls with a thermal insulation coating.
A thermal insulation coating blocks a certain amount of heat from loading into your walls. Read our guide to find out more. You can get plasterboard with integral insulation which you can attach directly to the existing wall, but if you need more insulation you'll have to use thicker battens to allow for this. While this adds to the cost of your planned reno, it certainly is less expensive to do it while you are taking things apart then once they are all put back you can't blow insulation into an area that has batts but once you determine the problem for sure, then it is much easier to come up with a solution.
