Insulating A Low Slope Roof

Such roofs are generally considered to have a slope of less than 2 12.

Insulating a low slope roof.

Eric dymond lives in a 1920s baltimore row house that needs a new roof. Insulfoam single ply sp fire rated single ply roof insulation with factory laminated glass facer. By martin holladay issue 250 april may 2015. Or sprayed polyurethane foam spf.

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. Dual purpose structural deck and insulating planks. Currently the built up asphalt roof is installed over homasote or something similar and a roof deck made of wood planks. Box out light fixtures.

He plans on replacing the low slope built up roof with an epdm membrane and the question is how to insulate it correctly. Lightweight insulating concrete lwic. 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. Rigid board insulation rigid board insulation is the most common type of insulation used in low slope commercial roofing.

If you don t want to use sips or nailbase read this article tolearn the four basic approaches to insulating unvented roof assemblies. Common low slope roofing assembly. It is made from. Ideal for low slope roofing.

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

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.