Quote:
Originally Posted by muletopia
Hello,
When the floor for an observatory was cast the around the pier concrete (Beginners pier complete thread) it was surrounded by 20 mm thick boards. These boards have been removed leaving a 20 mm wide slot as deep as the depth of the floor casting,
My question is, would spray in expanding foam in the slot be too rigid when it sets? If so, what density of foam should be used?
Cheers
Chris
|
I used Sika expanding foam to seal the gap between my pier and the surrounding flooring. After trimming away the excess, it forms a very neat finish which keeps out unwanted draughts and creepy-crawlies. I have not been able to detect any transfer to vibration to the pier through the foam, despite my best efforts to do so (like jumping up and down on the floor!).