Insulation around the windows

[Phil1884]

Hi,

 

I'm nearing the end of my fit out and finally coming to deal with the window frames. Having been focusing hard on other things it's only really just come to my attention that the steel immediately surrounding the perimeter of the window has no spray foam insulation (the insualtion goes up to the battens bordering the windows). What with the condensation it has gone a slight shade of rust, so would it be worth spraying a coat of hammerite over these small areas?

 

Cheers

[W+T]

If i understand correctly i would coat in red oxide and pack with insulation like a Kingspan type. The steel will just get covered in condensation otherwise.

[blackrose]

would it be worth spraying a coat of hammerite over these small areas?

 

No, not if you're trying to insulate them

[Mike Jordan]

Is it possible to make a frame for the inside of the window which is rebated over the internal linings and comes into contact with the inner face of the alloy frame? If the frames are made in one piece its then possible to fill the space between the timber battens and the alloy frames with rock wool. The bats used by builders for cavity wall insulation are fairly stiff and shouldnt sag over time.

The more of the alloy frame you cover up the better since this will always be a condensation area.

Mike.

[bottle]

Just go to Screwfix and buy some spray foam, job done.

 

Cleaning off the rust and oxide paint is a good idea.

[Phil1884]

Cheers for the suggestions as always!