Thermal render vs external wall insulation

Question

What's considered better for improving a home's efficiency rating, thermal render or external wall insulation that's rendered over?

Mike · Answer

External wall insulation is effective on the u values but can often cause condensation inside the house it can also alter the appearance of the house dramatically I would prefer a good micro porous render and finish that dries the existing walls out for good u values .
Mastercoat can advise

James · Answer

External wall insulation is the better option but I'd also look at internal insulation and also get a specialist surveyor out to actually go though the best option for your situation regarding heat loss

Lloyd · Answer

Hi not sure what you are asking here never heard of thermal render,insulation render will improve efficiency depending what size insulation boards you use and you render over the top any render on its own is really to seal a building and mainly decorative hope this helps

Alan · Answer

Yes – installing external wall insulation does add value to your property as it increases your EPC rating, improves the outward appearance of your house, as well as saving money on bills

Daniel · Answer

HI Kate,

Definitely better for improving a home's efficiency rating is external wall insulation that's rendered over, Insulation is more energy efficient

Jordan · Answer

External wall insulation is better however it is likely to cause condensation and potentially causing more issues in the long run internally. Personally thermal wall render is the better option

Clint · Answer

Hi there external wall insulation is better but it's alot more costly.

Matthew · Answer

It would better to look internal first. As it's easier to trap heat in the inner walls than the external walls. There is arguments on both sides for both it all depends on application

Damien · Answer

External wall insulation would have my vote. Quite easily to be completed

Gregory · Answer

Thermal render is good and efficient but insulation that’s rendered over is superior. Insulation is more energy efficient.

Thermal render vs external wall insulation

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