Roofing Underlays

All Around Roofing: Trusted Roofers Denver CO

Homeowners who want to lower their energy bills know that insulation and air sealing are the top two actions to take. These activities, along with installing more efficient appliances and choosing a light colored, reflective exterior roofing material can all help keep a home cooler during the summer months of the year. Another action that property owners should consider is the installation of a perforated aluminum radiant barrier. Experienced Denver roofing contractors can install this material onto the attic’s ceilings or floors so that the home is more comfortable and its summertime cooling costs decrease by 8 to 12 percent.

Installing the radiant barrier on the roof’s underside allows 95 percent of heat absorbed through the exterior roofing materials to be reflected back into the atmosphere. This option requires about twice as much of the barrier compared to using it to lining the attic’s floor. However, installing a reflective barrier on the floor may result in a loss of reflectiveness when dust settles onto its surface.

To install a perforated foil radiant barrier, roofers begin by cutting the aluminum into the right size of pieces to fit in the desired location. This is done with tin snips or heavy duty scissors. With the reflective side of the material facing into the attic’s open space, the roofers attach the aluminum using staples spaced 6 to 12 inches apart.

Roofers will avoid placing staples near electrical wires. Some drape is desired between the wooden roof or floor and the aluminum, as this allows air to circulate.

If there is already some insulation on the underside of the roof or attic floor, the perforated aluminum can be attached right on top of it. Vent openings and other protrusions like plumbing pipes, furnace flues and chimneys will not be covered with the aluminum. During the installation process, care must be taken to avoid creating any dips in the aluminum that will capture any rays of sunlight, such as through an attic window or vent opening. The metal concentrates the sun’s energy and could start a fire in the attic.

Homeowners who are unsure about a single layer of foil might consider related products that can be used as radiant barriers. Multilayered foil systems are an alternative to the perforated foil and may provide a small amount of insulating effects as well, although not as much as a foil wrapped insulation would. Some manufacturers are also producing foiled sheathing, which takes one step out of the installation process, as the radiant barrier is already attached to the wooden sheaths.

A roofing contractor from All Around roofing of Denver CO can answer any questions you have about insulation or metal roofing. Ask a Question.