Exterior Flat Roof Insulation

Flat expanded polystryene eps roof insulation provides high long term r value of eps and labor saving face laminates.

Exterior flat roof insulation.

Convenient or not jordan will need exterior insulation over the roof sheathing in order to meet code minimums says ryan lewis advice that is seconded by gba editor martin holladay. You need sufficient exterior insulation typically. The insulation material is placed between the supporting joists leaving a gap of 50 60mm between the roof and insulation. The type that is right for your flat roof insulation job depends upon the state of the roof expert opinion on the best type and your budget.

Many properties use this option as there are no additional costs for scaffolding or organising how to gain safe access to the roof exterior. Because most flat roofs don t have an attic crawl space or venting the insulation must go underneath the roof s covering on the exterior of the home or be placed on the inside of the home. And it will be important to maintain the correct ratio of interior to exterior insulation. Gable roofs hip roofs intersecting roofs butterfly roofs mansard.