Polyisocyanurate Roof Insulation Wet

See also material data sheet msds 1511 or msds 1911.

Polyisocyanurate roof insulation wet.

My concern is that i am currently getting ready to reside my house and i have already installed this on 50 of my home. This is an even more dense and more expensive foam board insulation. Polyiso is most commonly used as a continuous insulation for roofs and walls and as a protective roof cover board. Liquid water should never be present in a building system.

Designers are advised to determine the optimum thickness of polyiso by performing a dew point calculation for the system. The reports concern surface staining of polyisocyanurate insulation which has been interpreted by some as evidence that the material has become wet and should be replaced. Trymer pir polyisocyanurate is a closed cell foam insulation for industrial pipes vessels and equipment. Recognizing the importance of an energy efficient building thermal envelope modern energy codes establish minimum requirements for insulation.

If an insulation polyiso or polystyrene is submerged in water the insulation benefit. 1 when joints penetrations detailed appropriately. The information on this page is based on data considered to be true and accurate based on periodic internal. Roof insulation is a critical component of a roof system and contributes to overall building energy efficiency as the roof is the largest single side of a typical building.

Trymer pir can be used in applications that operate at temperatures ranging from 297 f to 300 f 183 c to 148 c. Additionally trymer pir is offered in a variety of different densities and compressive strengths to ensure the product consistency is suited for the unique needs of. Polyisocyanurate polyiso polyiso is the industry s premier roofing insulation. I just read one of the discussions on the use of polyisocyanurate insulation on the exterior of a home and how it acts as a vapor barrier and not to use it because it doesn t breath thus resulting in potential condensation and mold problems within the walls.

Reports have been received of moisture contamination or signs of moisture contamination of polyisocyanurate insulation on some construction job sites. It provides an r value of 6 per inch of thickness and often comes foil faced to help reflect radiant heat. Excellent lttr value compared to any other fm class 1 rated products of equivalent thickness. This is an even more dense and more expensive foam board insulation.

2 stated thermal resistance values are based upon conditioning requirements and test methodology found in astm c1289 and astm c518 for foil faced polyisocyanurate insulation. For this reason polyiso is the best insulation for cavity wall applications. Fm approved subject to the conditions of approval as a roof insulation when installed as shown in the current edition of the factory mutual research approvals guide.