Screws must be able to penetrate not less than 3/4" into framing or furring and should be: Size #8, truss head or pan head. Corrosion-resistant, self-tapping sheet metal type. Staples If staples are being used instead of nails or screws, they must: Not be less than 16-gauge semi-flattened to an elliptical cross-section. Penetrate not less than 3/4" into framing or furring. Be wide enough in the crown to allow free movement of the siding (1/32" away from the nailing hem). Undersill Trim 10' -- Measure bottom of all areas where siding must be cut horizontally (at the top of wall and under all door and window openings). Convert to decimal, divide by 10 and round up. # of pieces needed: _______ Dual Undersill Trim 12' 6'' -- Measure bottom of all areas where siding must be cut horizontally (at the top of wall and under all door and window openings). Convert to decimal, divide by 12.5 and round up. # of pieces needed: _______ General Installation Tips Before You Begin These instructions have been specially written to provide you with a simple, straightforward, step-by-step guide for installing your ABTCOT vinyl siding. In fact, the best installation advice we can give is that you read through these instructions carefully before beginning your project. Because proper preparation is the key to a smooth installation job. Remember to always exercise caution when on a construction site! Tool Checklist Work Table Tape Measure Hammer Utility Knife Chalk Line Square Tin Snips Level Safety Glasses*