Hot Roof Design Roxul

In the most recent issue of fine homebuilding martin holladay wrote a piece on insulating unvented roof assemblies.

Hot roof design roxul.

A hot roof contains the highest r value because there are no chances for air to leak. Yes unvented roof assemblies can be insulated with fiberglass a wufi post and not just in climate zones 2b amp. If you don t want to use sips or nailbase read this article tolearn the four basic approaches to insulating unvented roof assemblies. We agree that avoiding sheathing rot is critical and that air permeable insulation such as fiberglass or cellulose cannot be used alone.

Perks of a hot roof. Used as a roof insulation or insulating cover board over other insulations rockwool toprock dd is a high density stone wool insulation board for low slope roofs. Martin s post focuses on the marketing of owens corning 039 s propink unvented attic insulation system. Hot roof design hood roof.

The bigger the r value the better it will insulate your home. Meadowlark builders co founder doug selby explains what a hot roof is and how it can be used in the design of a passive solar home. If you have been considering a new roof installation looking into adding insulation to your home or are planning to build a new house you may have heard people talk about hot roof and cold roof systems. Likewise referred to as kicked eaves a hood roof has 4 sides with a high top incline as well as a much more mild reduced incline offering cover around the sides of your home for a veranda.

We re big fans of fine homebuilding. The r value measures how well insulation is able to resist heat going through it. Insulating unvented roof assemblies. Roxul safe 45 is a semi rigid stone wool insulation board that is specifically engineered as a fire blocking material for concealed spaces of multi unit residential buildings.

This article series about roof and ceiling ventilation describes. Roxul safe lightweight semi rigid stone wool insulation for fire and sound. Hot roof designs for un vented roofs aka dense packed insulated sloped roofs. 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.

The unit of measurement for insulation is called the r value. This article describes various cold climate building solutions for un vented cathedral ceilings and similar under roof spaces offering advice on how to avoid condensation leaks attic mold structural damage when roof venting is not possible. Using roxul safe 45 with our rockwool batt insulation creates a high density party wall system that improves sound dampening and fire performance.