Originally Posted by
nutwood
Many thanks for trying the experiment.:U My interest in staples is the thinner gauge and two legs. It's very interesting that none bent. I've got 150 psi from my compressor so I can handle that OK. I'm in the process of trying to set up a test, as per Ian's suggestion. He's made a very good point. If I angle, the fastener will go through the first layer fine but it won't be guided when it hits the second and that insulation gap may cause havoc.
I've got a little bit caught on this job as I was asked about the feasibility, without anyone mentioning the insulation.:doh: Wood to wood, I'd be happy. This carpenter is happy to glue! My fall back plan, if it starts to go pear shape, is a few 304SS CS self tappers. Straight through the timber/insulation/timber and out through the steel. Grind off flush and fix paint. Terrible for the thermal barrier but really good for stopping the wall falling in.:D