I'm to the point where I am putting down the aluminum heat spreaders in my office hydronic floor. However, I just tried stapling them with my hammer stapler and it really isn't cutting it. I tried swinging it, and hitting it with a hammer, both give less than stellar results. I'm guessing the next step is going to a pneumatic stapler? I highly doubt my electric stapler will punch through the .02" aluminum. Any other ideas?
Looks like Gary from builditsolar uses a pneumatic stapler:
$2000 Solar Space + Water Heating System: Staple Up Radiant Floor Heat
Here is what I've gotten so far.