Metal straight edges can be helpful. For fast, accurate cuts that are close to a panel edge, use ripping guides for circular saws.
If you are using a circular saw, lay out one face and then square it across the panel skins to transfer your mark to the opposite skin before making your cut. Use the maximum depth
of cut setting on your saw and make a nice straight cut. Flip the panel over to layout that side and make a similar cut.
The remaining foam between the panel skins can be cut using a reciprocating saw, or hand saw. When using a reciprocating saw use a dull blade, it will follow the kerf cut in the panel, cutting the foam without slicing the wood.
Scrape off any excess foam between the skins with a metal straight edge such as a speed square. Adjust your foam cutter to the depth of the installed member. (Foam cutters will melt foam back further than the setting, which is just about the right tolerance to get the framing member into the panel.) After your foam is “scooped” out, clean the leftover foam along the sides by placing the foam cutter parallel with the skin. (The depth gauge can rest on the panel edge.) Use a paint scraper or speed square to take off any excess foam that may inhibit lumber placement. Use Premier Mastic as required and follow the appropriate details outlined in this manual or the PBS detail section of our website at: www.pbssips.com.
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