"Bob Smith (UK)" wrote in message
...
I am aware of the expanging foam in a can for filling gaps.

Is there any equivalent product for covering flat areas?

I only want 2-3sq feet, so is it a case of using the gap filler version
and
spreading it?

If you wanted a lot bigger then a Foamseal 200 kit comes with a nozzle that
does allow this to be done to a reasonable degree. Unfortunately the 200
stands for 200 square feet :-(