The above rubber and silicone products are a great boon for sealing the air-gaps in old constructions, especially DDA houses which have MS doors & windows. The above products can be applied at the edges of the fenestrations and are very economical and effective in close the air-gap in a non-toxic way, without a chemical sealant. Saves from hot and cold winds filtering into your houses and merges with the fenestration. Again, an innovative product for thermal protection of your homes!
You can purchase the first on Amazon on https://amzn.to/3coFy6S
You can purchase the second on Amazon on https://amzn.to/2EtLChT
Author/ Founder Director