WebNov 15, 2013 · You can attach vinyl and wood siding and hardcoat stucco lath and manufactured stone veneer directly through all flavors of foam sheathing up to 2 inches thick. With fiber-cement siding this is limited to 1-1/2 inches of foil-faced polyisocyanurate. For thicker foam sheathings, 1x4 wood furring is necessary. WebSpray foam in particular has been sold as a thermal insulator and air barrier in one. But once installed, spray foam, similar to foam boards, will expand and shrink over time. And both open and closed cell spray foam can and do regularly shrink and pull away from other air barrier components.

Foam Shrinks, and Other Lessons - GreenBuildingAdvisor

WebPA-1202: Foam Shrinks, and Other Lessons: Correction PA_Foam_Shrinks_Correction.pdf (228.94 KB) PA-1201: Foam Shrinks, and Other Lessons PA_Foam_Shrinks_FHB.pdf (1.31 MB) PA-1102: Throw-away buildings: The slow-motion failure of Toronto's glass condos Page 1 ›› Subscribe to Published Articles WebAdding continuous exterior foam is about the best thing you can do to a home. I wouldn't do 4" though. 1/2-2" is really all you need. The rest would never pay itself back. Foam shrinks so two layers with off set seams works best. Each layer the … shockwave picture

Faced OR Unfaced XPS Insulating Sheathing - GreenBuildingAdvisor

WebFeb 2, 2013 · Interior, below grade, I'd use low expanding canned foam all around perimeter, then tape the seams, leaving a slight fold in middle for foam shrinkage. Exterior, allow for same- I'd tape over; mastic-mesh tape/backer rod/caulk, and flash the horizontal joints if your drainage plane w. WebJul 10, 2007 · The building papers absorb water, swell and wrinkle. After application, the building papers dry, shrink and the stucco rendering debonds from the building papers creating a drainage space. The drainage space is connected to weep screeds or flashings to complete the system. shockwave physics