Exterior Roof Insulation Details

An unvented roof cladding substrate e g.

Exterior roof insulation details.

Exceptional dimensional stability and rated for extreme hail rockwool stone wool insulation roof boards have meet both the fm severe hail and the ul 2218a standard for impact resistance. It makes a lot of sense if the rafter cavities are already insulated and it is most affordable when the roof needs replacement. There are lots of different ways to insulate this type of roof but one of the best methods calls for the installation of rigid foam insulation above the roof sheathing. I like the existing cedar and don t want to cover it up.

Since there is no insulation in the summer months we can feel the heat in the upstairs in the morning and quickly begins to work it s way done in the late morning. There are at least two good reasons why this approach makes more sense than installing the insulation under the roof sheathing. Plywood or osb roof sheathing can be installed over exterior insulation layers using long exterior grade screws. Our insulation provides a range of products and solutions for exterior wall systems such as rainscreen cavity wall exterior continuous insulation curtain wall wood frame and metal frame constructions.

The screws must be long enough to penetrate an adequate depth into the roof framing. 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.