A practical guide with lots of illustrations, easy to understand, straight forward common sense - recommended by ETL Retrofixers!
Can be purchased from:
https://www.crowood.com/products/draughtproofing-and-insulation-by-tony-cowling
A practical guide with lots of illustrations, easy to understand, straight forward common sense - recommended by ETL Retrofixers!
Can be purchased from:
https://www.crowood.com/products/draughtproofing-and-insulation-by-tony-cowling