Three Strategies For Insultaing A Roof

Insulation must secure properly to the roof deck to provide an acceptable substrate for the roof covering.

Three strategies for insultaing a roof.

Heat moves through a roof in three ways. 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. 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. This makes the insulation resistant to airflow and excellent at noise reduction.

I want to remove the shingles repair sheathing as needed install 2 1 2 on rigid polyiso 1 2 cdx followed by shingles. Some shingles are energystar rated. 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. Lighter colors reflect light rather than absorbing it.

Currently the built up asphalt roof is installed over homasote or something similar and a roof deck made of wood planks. Maximizing each role of the roofing insulation increases your roof s roi. Breaking down roofing insulation s thermal function. Paradigm roofing is happy to show you the top strategies for an energy efficient roof.

Mechanical fastening with self tapping screws and plates is the most common and approved method for insulation attachment on steel and wood roof decks. Spray foam insulation a polymer combined with a foaming agent sprays into steel wall and ceiling cavities. Cool roof asphalt shingles help lower that difference to just 5 or 10 degrees by using granules coated with a highly reflective pigment. Another report taped insulating sheathing drainage planes describes this.

I have an existing cathedral roof unvented. 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. The three layers of rigid insulation have yet to be.

Gives me the proper r value for my zone 4. There is blown in insulation between the rafters. Roof insulation martin great article on insulating cathedral ceilings. If you are thinking of replacing your roof opt for a lighter color.

When comparing these products look for the highest numbers in solar reflectance and thermal emittance both on a. When a dark roof absorbs light it heats up you home causing you to use more energy to cool it.