Three Strategies For Insultaing A Roof

I want to remove the shingles repair sheathing as needed install 2 1 2 on rigid polyiso 1 2 cdx followed by shingles.

Three strategies for insultaing a roof. There is blown in insulation between the rafters. The three layers of rigid insulation have yet to be. When comparing these products look for the highest numbers in solar reflectance and thermal emittance both on a. Gives me the proper r value for my zone 4.

Bsc s high r value retrofit techniques for roofs unvented attics describes the use of multiple layers of rigid insulation above the roof deck as a retrofit technique to insulate an attic and bring it into the thermal enclosure. The liquid turns into a solid cellular material of air filled cells which fills every space even the small spaces where air will not escape. When a dark roof absorbs light it heats up you home causing you to use more energy to cool it. Breaking down roofing insulation s thermal function.

Roof to wall air seal note the connection of the new roof deck membrane overlapping the trimmed back original gable overhang and catching the white housewrap water control layer and air control layer behind the wall exterior insulation the blue layer of foam. Spray foam insulation a polymer combined with a foaming agent sprays into steel wall and ceiling cavities. Some shingles are energystar rated. This makes the insulation resistant to airflow and excellent at noise reduction.

Another report taped insulating sheathing drainage planes describes this. See the graphics for an overview of three assemblies focused on the exterior walls and roof systems of the building and demonstrating which combination of construction and materials provide the highest levels of stc oitc and r value. In these systems the insulation can play three roles. Although there s some sparsely distributed insulation in the space between the ceilings and the roof deck it won t meet current recommendations for dymond s climate zone 4 house.

Cool roof asphalt shingles help lower that difference to just 5 or 10 degrees by using granules coated with a highly reflective pigment. Maximizing each role of the roofing insulation increases your roof s roi. I have an existing cathedral roof unvented. With rigid insulation as a component.

Currently the built up asphalt roof is installed over homasote or something similar and a roof deck made of wood planks. Mechanical fastening with self tapping screws and plates is the most common and approved method for insulation attachment on steel and wood roof decks. If you are thinking of replacing your roof opt for a lighter color. Others have been tested by the cool roof rating council.

Insulation must secure properly to the roof deck to provide an acceptable substrate for the roof covering. Paradigm roofing is happy to show you the top strategies for an energy efficient roof.