Flat Roof Sloped Insulation

Two basic approaches to insulating flat roofs this article explains methods for avoiding moisture condensation problems in compact insulated roofs that have no roof cavity space and in steel or wood framed roofs that have a roof cavity space and that usually include insulation within the cavity space.

Flat roof sloped insulation.

Urethane unlimited can assist with repairs on any roof system. Creating a positive slope roof is traditionally done by installing rigid board insulation such as xps or polyiso on flat or low sloped roofs. We can be the perfect solution just call us. Insulation material is placed on top of the roof rather than in between the ceiling and the decking.

The insulation used in low slope roof assemblies typically falls into one of the four categories. Sprayed polyurethane foam spf. Dual purpose structural deck and insulating planks. It is top quality and the most cost effective product for your flat roof.

There are two main types of flat roof that require different approaches to installation. You can expect to pay about 55 100 sq ft. Insulation is placed in between the joists underneath the roof surface above. Energyguard tapered polyiso insulation provides a logical and economical answer for roofs that do not permit adequate positive drainage like low slope roofs.

Under a flat or low slope roof the usual rules about roof insulation and ventilation don t apply. Since the piece of iso is 4 long the thickness increase will be equal to 1 4 times 4 or a rise of 1 over the 4 distance 1 2 to 1 12 flat roofers can then arrange the sloped insulation to move water towards roof drains scuppers or gutters. Xps and polyiso are available in boards that are no more than a few inches thick. Foam control plus and foam control tapered roof insulation also offers optimum design flexibility for the architect and saves the roofer applicator time and labor.

This tapered roof insulation technology creates high thermal performance which improves interior comfort and reduces the energy costs of keeping a building comfortable. Lightweight insulating concrete lwic. For a 1 inch board equivalent of 6 r value. There is a problem with using these materials though.

We recommend having at least 20 r value worth of material for optimal energy efficiency. While expensive the best insulation is polyiso rigid foam.