Can I use expanding foam filler with Kingspan?

[David Pearson]

My Kingspanned ceiling has a gap or two (or a hundred), which I could fill up nicely with expanding foam filler. Can anyone tell me if it reacts with the Kingspan? I am worried that the solvent in the filler might melt the Kingspan foam.

Thanks, Original Poster.

[VisionSet]

AFAIK, the release of the urethane foam from the can starts the polymerisation reaction which is not reversible. The polyurethane foam produced should be virtually identical to kingspan. I think KS is all PU. So yes you should be okay.

-- Mike W

[Andy Hall]

It works fine. I did this in a couple of places when insulating my workshop.

I taped over the gaps using the foil tape leaving a small hole for the nozzle of the can at one end and another at the other to allow air to escape.

A *small* squirt and job done. I do mean small though. Read the Peter Parry canoe story in the FAQ.

Also, do wear gloves as this stuff sticks to the fingers for days.

For a ceiling, definitely cover the floor.

Once cured, you can remove excess from the surface with a utility knife and tape over it if you want.

[Dave Liquorice]

Stickier than extremely sticky stuff. How ever if you get to it with vegetable oil whilst still fresh you can get most of it off. I wonder if a thin smear of veg oil would act as a release agent and stop you getting sticky in the first place?

[Tim Morley]

Where can I find the faq ??

[Andy Hall]

[Rick]

You can buy HUGE cans with long pipes to ease the cost and effort of installation. This is what I intend to use. google for "spray foam"

Rick

[David Pearson]

Thanks Andy, and everyone else who replied.

I have used it before for a different job. A blob fell in my hair, and I thought "was was that" as I reached up and rubbed it around my head a bit. Bad move!

-DP.