Insulation Roof Sheeting
There are at least two good reasons why this approach makes more sense than installing the insulation under the roof sheathing.
Insulation roof sheeting. Thermax sheathing is a non structural rigid board insulation consisting of a glass fiber infused polyisocyanurate foam core laminated between 1 0 mil smooth reflective aluminum facers on both sides. They re much lighter and easier to work with than plywood sheets. For the same reason insulation shouldn t touch the roof s underside. Featuring integrated moisture air and thermal protection zip system r sheathing completely reimagines traditional wall assemblies by streamlining exterior water air and thermal management.
The problem with the insulation against the sheathing expands. Working with home insulation boards insulation panels typically come in 4x8 foot sheets. The glass fiber reinforcement contributes to improved fire performance and dimensional stability. If there is a roof leak the insulation will be damaged by the water leaving you with less insulating value.
Staple plastic or foam baffles to the roof sheathing near the eaves to keep the material away. 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. For new construction use rigid boards to insulate slabs and the outside of foundation walls. Foamular 150 1 in.
Polyiso consists of a uniform closed cell polyisocyanurate foam core and provides one of the highest r values per inch of any rigid insulation. The airflow from the soffits to the ridge vent keeps the roof cool and prevents ice dams and the material will block that flow. Insulated roof assemblies can be vented or unvented. Zip system r sheathing is the simple all in one structural panel with built in exterior insulation.
The moisture is held in place by the insulation which allows for damage to the framing and other building components. Insulated roof panels are an ideal roofing solution for anyone looking to benefit from lower running costs straightforward maintenance and upfront cost effectiveness. Smaller sizes are also available. Foam board sheathing insulation johns manville polyiso foam sheathing insulation boards provide a continuous layer of insulation to reduce thermal bridging and improve energy efficiency.
R 5 scored square edge rigid foam board insulation sheathing foamular extruded polystyrene xps rigid foam insulation offers foamular extruded polystyrene xps rigid foam insulation offers a comprehensive line of products choose the strength you need from 15 to 60 psi and exceptional moisture resistance.