Rigid Insulation Above Roof Deck

The dew point is typically within the insulation layer lowering condensation risks.

Rigid insulation above roof deck. Remove existing roofing and non adhered underlayment to expose roof sheathing. With a minimum of 70 recycled content the installed thermafiber products contributed to valuable leed credits helping the building earn a leed platinum certification. Rmax operating llc rmax nailable base 3 insulation for above the deck description. Nailable base 3 an all in one roof insulation and nailing surface has a 7 16 thick osb nailing panel bonded to a polyiso foam board with glass fiber organic mat facers.

The project is in climate zone 4 seattle area and i want to have an open beam look in the ceiling. This retrofit assembly is appropriate for homes with conditioned attics or where the retrofit is intended to create a conditioned attic. Rigid foam installation after the roof deck is ready the rigid foam insulation is installed. The trim the frieze boards the fascia and the overhangs all had to look like they belonged.

Case study salesforce tower. I m considering a roof design that would place all the insulation above the roof deck with no insulation below. I would use polyiso with a top layer of eps as recommended in your blog post on the topic. It is an acceptable practice to install a new roof over an existing roof membrane system provided that the roof deck is structurally sound and has been properly prepared to support the added load.

They had to look original. Depending on the type of insulation you choose and the desired r value you want for your facility you may need to build up a few layers of insulation. Owens corning foamular xps insulation is a closed cell moisture resistant rigid foam board ideal for many roofi ng applications including single ply protected roof membrane assemblies prma tapered vegetative roofs plaza decks architectural metal roofi ng and recover roofi ng. We re proud to say our products can be found in some of the tallest and safest buildings around the globe like salesforce tower.

Install insulating sheathing above the roof deck on existing homes. The r value is a measurement of the heat loss and heat gain. For most of us in the low slope roofing industry it s considered to be absolutely standard to have insulation placed above the roof deck. Placing a layer of fluffy insulation below the roof deck would needlessly complicate the.