Duct board is made up of compacted fiberglass supported by a foil vapor barrier. The insulating material properties of compacted fiber glass lessens the temperature loss from air flowing throughout the plenum and prevents condensation from forming on the surface of this duct plenum. Excessive condensation will probably damage finished compounds enclosing the plenum and lead to mold to develop inside dampened metal framing components.
Step 1 : Set a sheet of duct board onto a firm surface with the foil vapor barrier sitting on the work surface. To get more information you can search duct boards panels and duct board insulation through online resources.
Step 2 : Pull the tape measure across the part of the duct board. Mark 1-1/2 inches from 1 end of this duct board having a soapstone. By the 1-1/2-inch markers, assess the elevation of one's own duct and 1-3/4 inches and then place the next soapstone markers. Place the brief side of this t square against the face of the duct board. Align the extended border having cut markers. Pull the soapstone across the edge of this T Square to indicate the lineup.
Step 3 : Twist the duct board knife over the diameter of the duct board. Drag the knife vertical across the 1-1/2-inch markers. Remove the inch – 1/2-inch part of cut insulating material.
Step 4 : Pull the V Groove tool together each marked line. Maintain the horizontal area of this V Groove tool flat against the surface of the duct board to guarantee the top are at the appropriate thickness. Eliminate the searing insulation from every groove.
Step 5 : Twist the foil flap-over and basic the flap into the strand board. Seal the bond with a period of foil tape.
Step 6 : Secure the end caps into the plenum. Push the trim bits in each open end of this plenum. Slit the foil vapor barrier stretching beyond the borders of the duct board having a duct tape knife. Staple the transparency into the strand board. Tape the flaps down using foil tape to fill out the duct board plenum.