What Is The Best Way To Cut Insulation Sheets

To cut thick batts or rolls of fiberglass insulation easily use an extendable utility knife that has snap off blades.

What is the best way to cut insulation sheets.

0 75 in x 4 ft x 8 ft 1 unfaced polystyrene foam board insulation item 304087 model 100000050511. Lift the foam insulation board so that the sheet is sitting upright. The blade will give you the most precise cut. Kingspan insulation r 4 common.

Use 2 2 inch lumber for the studs and 2 3 inch lumber for the top and bottom plates. If you have properly scored the foam board it should simply pop or snap off. But you may have an uneven cut with rough edges. Then snap along the scored cut by pressing hard against the backside of the score etching line while securely holding the side edges of the board.

0 75 in x 4 ft x 8 ft. However you can also use a utility knife to score the rigid insulation and then snap it over an edge. If your fiberglass has been cut previously the bottom edge will have some light fraying on it. To speed up the process and produce a clean neat cut every time lay the insulation on top of a scrap piece of plywood with its foil or kraft paper vapor barrier facing up.

Step 4 complete the cut. How to cut foam insulation sheets. Extend the blade all the way out to provide a long sharp edge that perfect for cutting through thick insulation. Then cut a 2x4 at least 12 inches longer than the width of the insulation.

Then cut your insulation panels to fit between the furring strips. The best way to cleanly cut rigid insulation is to use a circular saw. Insulation sheets typically consist of foam beads compressed into rectangular panels. To give yourself a clean sheet to work with pull out frayed strands until one of them remains unbroken from the left side of the sheet to the right.

Pull out fabric strands along the cutting edge until one lasts the length of the sheet.