Exterior Roof Insulation

Bare foam board one sided sheathing board or double sided which is also reference as structural insulated panels.

Exterior roof insulation.

Rigid foam board is just above the roof deck or an exterior insulation option. Because this strategy involves exterior insulation and over roofing it presents the opportunity to establish a robust water control system at the roof. Rockwool multifix is a mineral fiberglass faced stone wool product that can be installed under many single ply membranes. It makes a lot of sense if the rafter cavities are already insulated and it is most affordable when the roof needs replacement.

It typically has 3 variations. Adding exterior foam on an old roof is a good idea whenever a reroof is planned it is a once in 50 year opportunity to bring the house up to higher level of energy performance. Asphalt shingles a water control layer such as roofing underlayment that is impervious to liquid water and. Single ply roof systems can provide an easy to install seamless roof assembly.

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. Because old roofs were often framed with 2x6s there isn t much room for insulation. Single ply roof insulation.