Owens Corning Fiberglass Duct Systems Fabrication Instructions
Even insulated sheet metal ducts produce pops and pings and other noises when used. Fabricated fiberglass duct systems are far quieter and more thermally efficient. Owens Corning duct system fabrication materials combine a rigid fiberglass board with flame retardant and damage-resistant aluminum exterior. The material arrives in 1-inch-thick sheets, ready for measuring, cutting, assembly and installation. Does this Spark an idea?
Other People Are Reading
Things You'll Need
- 1 sheet Owens Corning QuietR duct board
- Tape measure
- Cut-all tool
- Modified shiplock cutter
- Female shiplock cutter
Instructions
-
-
1
Determine the necessary height and width dimensions for the fabricated duct. Add 1 3/4 inches to each of these values to compensate for the material's thickness. For example: if the fabricated duct needs to measure 5 inches high by 12 inches wide, then the thickness-adjusted values become 6 3/4 inches high by 13 3/4 inches wide.
-
2
Sum the adjusted values for height and width. Multiply this number by two to determine the width of duct board needed. Continuing the example from Step 1, add 6 3/4 and 13 3/4 to yield a sum of 20 1/2 inches. Multiply this value by two, yielding a product of 41 inches.
-
-
3
Measure the necessary amount of Owens Corning duct board. Remove excess width material with the cut-all tool. Save the additional material for later use. Continuing the example, consider a delivered duct board with 50 inches of width and four feet of length, remove the excess 9 inches from the width, yielding a duct board that is 41 inches wide by 4 feet long.
-
4
Mark the usable duct board in three locations along its width at alternating adjusted height and width values. Using the T-square, draw straight lines along the length at the marked positions to create four segments. Continuing the example, starting with one edge, make marks at 6 3/4 inches, 20 1/2 inches and 27 1/4 inches.
-
5
Using the modified shiplock cutting tool, cut along each segment's left side. Always keep the tool to the right of any drawn lines to maintain proper dimensions. Use the female shiplock cutting tool to cut along each segment's right side. This should remove any drawn marks or lines. Do not cut deep enough to separate the segments from one another. The end result should be four raised segments laid in parallel, connected by a thin amount of material.
-
6
Fold the duct board to the modified shiplock cuts lock into the female shiplock cuts. This creates a firm, but flexible, connection. The end result is a cube with one unsealed edge and two open ends. Seal the edge with pressure sensitive tape or other approved adhesive. The interior dimensions should match the pre-adjusted height and width dimensions.
-
7
Create an end cap from the remaining material or a fresh sheet of duct board. Measure material corresponding to the pre-adjusted height and width requirements in Step 1. Cut this piece out. Fit it into one end of the fabricated duct. Bind it in place with pressure sensitive tape or other approved adhesive.
-
1
Tips & Warnings
Be aware of the building codes for ductwork in your area. Failing to meet these codes can result in costly, time-consuming replacements.
