Good foam

This expanding foam fills its function very well. Used to fill the space between the windows and the wall in a workshop, the foam was spread across all air passages and the connection between the uprights and the masonry is perfect.
Dry after about 2 hours, cut with a cutter. The record is not great (because of air bubbles), if it is to remain visible must be sanded and coated.

Little trick to reuse the bottle: the foam will harden in the pipe, and if you do not remove it you will not want to reuse it. If you do not have acetone, plug the tip of your compressor on the conduit, the foam will come out with the pressure (if it is still fresh of course). The result will not be perfect, but the duct is not clogged. You can also lead the line with a long wick concrete.

Be careful to protect the media and to wear gloves, because the foam adhesive terribly on all surfaces.

For the price, it is a product entirely correct, I have not yet finished my first bottle, it is always useful to seal cracks or small holes.