Pitstop

Ideas on best value air-tight membrane? Also....this 1970's bungalow in Hastings has cavity walls with no filling inside. Best left alone?, or is there a modern product to fill them with that won't attract mold from the sea air? Thank you!

Thank you all for your input

Hi... I will probably import from China. My enquiry is more about practicality, ease of retrofitting, and effectiveness. Thanks

I want to retrofit insulation inside a 1970's bungalow. Want thinnest + effective option. Why doesn't everybody use Aerogel if it's such a good thermal insulator? Your thoughts?