How to Install Fiberglass Insulation how tos. Begin laying in the insulation, starting at an area farthest from the attic access Image 1. When rolling the insulation, cut it to length using a utility knife. Tip When you reach the end of a line, pull the insulation back slightly, then place it on a joist so there is a solid surface to cut on. Labview 7.1 Drivers there. Using a straightedge as a guide, make your cut Image 2. After making the first cut, use the remaining portion of the roll and work back in the other direction. When you reach the end of that roll, butt a new roll up to the cut piece and finish the run. Owens Corning has solutions for your building remodeling needs. Browse through roofing products, insulation, shingles, asphalt, composites solutions, basement. REFLECTIVE TAPE Tape seams to improve insulation performance. Purchase spray foam kits from Energy Efficient Solutions to satisfy your insulation needs. These kits are perfect for sealing and insulating gaps and cracks DIYNetwork. Insulation Patch Tape' title='Insulation Patch Tape' />How to Blow in Cellulose Insulation. Does your house feel cold in the winter and hot in the summer even though your utilities are sky high Do you know if your walls. How to Insulate Your Home. Around half of all your heat can escape if your home is not properly insulated. Instead of turning up the thermostat, get insulated This. Once the perimater is reached, cut the end of the roll to fit. Using this technique results in the best use of the insulation and reduces wasted material. Tip Lay the rows snugly together to prevent undesirable gaps or spacing.