Exterior Roof Insulation Details

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.

Exterior roof insulation details.

Insulated roof assemblies can be vented or unvented. I like the existing cedar and don t want to cover it up. The roof consist of sheathing and shingles on the exterior and the cedar planks on the interior. There are at least two good reasons why this approach makes more sense than installing the insulation under the roof sheathing.

The screws must be long enough to penetrate an adequate depth into the roof framing. 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. Plywood or osb roof sheathing can be installed over exterior insulation layers using long exterior grade screws. 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.

An unvented roof cladding substrate e g. 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.