Insulating A Low Slope Roof

If you don t want to use sips or nailbase read this article tolearn the four basic approaches to insulating unvented roof assemblies.

Insulating a low slope roof.

Lightweight insulating concrete lwic. By martin holladay issue 250 april may 2015. Insulfoam single ply sp fire rated single ply roof insulation with factory laminated glass facer. Or sprayed polyurethane foam spf.

The analysis was done for an assembly consisting of a steel deck two layers of polyisocyanurate foam insulation polyiso and tpo single ply membrane. Unvented roof assemblies should be insulated either with air impermeable insulation rigid foam or spray polyurethane foam or with a combination of foam and air permeable insulation. Common low slope roofing assembly. Box out light fixtures.

Some assemblies included a high density hd polyiso board at the deck level. The insulation used in low slope roof assemblies typically falls into one of the four categories. Ideal for low slope roofing. Insulfoam sp is an engineered insulation consisting of a superior closed cell lightweight and resilient expanded polystyrene eps with a durable and stable factory laminated coated glass facer.

Eric dymond lives in a 1920s baltimore row house that needs a new roof. He plans on replacing the low slope built up roof with an epdm membrane and the question is how to insulate it correctly. Insulating a low slope shed roof learn 5 reliable ways to build an energy efficient flat or shallow pitched unvented roof which is much easier and less risky than building a vented one. It is made from.

Currently the built up asphalt roof is installed over homasote or something similar and a roof deck made of wood planks. Look for water stains on the roof sheathing or damp or moldy spots on attic joists and existing insulation as a clue to where leaks might be. Water is insulation s enemy. Dual purpose structural deck and insulating planks.

It creates a breeding ground for mold and mildew and ruins the air trapping pockets that block heat flow.