No Sheathing For Metal Roof

How to prevent condensation under a metal roof.

No sheathing for metal roof.

If your metal roof does not have plywood installed underneath you should not attempt to install spray foam yourself. Check around the ceiling to ensure your metal roof is supported by plywood or osb sheathing. This paper wrap is important to the health of the home by not allowing water to build up in the space between the sheathing and the metal roof. A strong resilient roof is a home s first line of defense when the roof deck is exposed to weather.

Here s how to fight back against the enemy within. It could spread through the seams in the roof and cause significant damage. Both materials make a great physical barrier between the interior building and the metal roof. Zip system roof assembly combines our revolutionary integrated sheathing and flashing tape or liquid flashing to provide a sealed roof for protection against moisture intrusion during construction or if high winds strip the roof covering away.

Owners of agricultural buildings man caves and horse barns all are worried about the corrosive effects of condensation. One of the most common mistakes that diy homeowners make with their metal roof is that they do not lay down any type of paper wrap on the sheathing. The most common material used for an insulating metal roof is fiberglass batts or glass mineral wool. Metal roofing panels rated for architectural use attached to purlins horizontal pieces of wood or metal fastened to roofing trusses are structurally sound when installed according to your roofing manufacturer s instructions and local building codes.

For many applications a layer of plywood underneath your metal roofing is an unnecessary expense. July 28 2017. Some metal roofs are installed without this sheathing. More expensive because of the additional labor and materials peeling off the old roof down to the sheathing is your only option if you already have two layers.