Roofing Refrigerated Storage Without Vapor Seal

Moisture flow and vapor retarders.

Roofing refrigerated storage without vapor seal.

The building location s annual outside temperatures plays a role in determining insulation thickness both for walls and roofs. Generally speaking a roof is designed to keep the interior of a building dry and safe from the elements. Provide proper insulation at freezer slabs. 2 internal floating type cover.

When it comes to roofing for cold storage facilities however just being water tight isn t enough. Roofing shingles and materials plus factory certified roofers including ratings from real homeowners from north america s largest roofing manufacturer. For coolers and freezers the roof exterior vapor barrier whether imp or membrane must tie into the imp wall at roof to wall connections. The cold storage freezer envelope system consists of.

F any emergency roof drain shall be provided with a slotted membrane fabric cover or equivalent device that covers at least nine tenths 9 10 of the area of the opening. Residential and commercial roofing shingles slate roof ventilation roof underlayments asphaltic and tpo roof membranes. Proper placement of a vapor retarder to manage the vapor drive and proper detailing to prevent air infiltration or. Provide a heavy duty vapor barrier similar to a pond liner at a freezer slab.

In the primary seal envelope surrounding the annular vapor space enclosed by the roof edge seal fabric and secondary seal. When designing the roof of a cold storage building a major concern is the significant vapor drive that occurs predominantly from the warmer exterior toward the colder interior. In cold storage facilities moisture vapor flow is reversed from a traditional building in a northern climate including the roof. In this situation the water vapor on the outside of the building will by vapor pressure differential move into the cold storage building s interior.

Concrete floor fabrication insulation systems cold storage doors and vapor barriers. All components including insulation adhesives edging and associated vapor seal accessories are available from carlisle for total system warranty coverage. This requires two critical measures for roof design. It should be installed in layers with staggered joints at both the slab and the roof to prevent easy transmittance of temperature.

Vapor tight and energy efficient roof systems are a specialty requirement. We provide solutions for fresh food and frozen foods including ammonia refrigeration blast freezers walk in freezers and freon. If the vapor barrier is not installed properly or does not have a complete seal moisture vapor will penetrate into the building and over time ice will begin forming and expanding. Without a complete vapor seal vapor drive will result in condensation or ice formations at the building interior what follows are general details provided by metl span showing typical cold storage imp vapor barrier installation steps.

Achieve an uninterrupted or continuous vapor seal and obtain the applicable carlisle roofing and vapor seal warranty.