Exterior Roof Insulation

Asphalt shingles a water control layer such as roofing underlayment that is impervious to liquid water and.

Exterior roof insulation.

Rigid foam board is just above the roof deck or an exterior insulation option. Exterior roof insulation retrofit unvented roof covering the roof of an old house with a blanket of insulation makes the house more comfortable and it cuts energy use. The later is used in new construction as the interior board serves as an inner wall. Bare foam board one sided sheathing board or double sided which is also reference as structural insulated panels.

Single ply roof insulation. Rockwool multifix is a mineral fiberglass faced stone wool product that can be installed under many single ply membranes. It typically has 3 variations. Single ply roof systems can provide an easy to install seamless roof assembly.

Inviting exterior air into the center of your roof assembly between two layers of insulation has the effect of making your rigid foam worthless if you go this route you ll have to spend a lot of time conscientiously sealing up the air intake openings and air outlets for each ventilation channel whether at the soffit vents or at the. The water control for a sloped roof includes a rain shedding cladding e g. Because this strategy involves exterior insulation and over roofing it presents the opportunity to establish a robust water control system at the roof.