Increased heat loss has been measured for several insulation joint arrangements in extruded ad polystyrene placed on a 9-mm thick plywood deck. Butt joints ranging up to 25.4 mm wide, a 3-mm butt joint bevelled to 28 mm at the deck, and a 3-mm shiplap joint were used. Most. of the work was carried out with protected-membrane roof arrangements, but measurements were also made on a conventional roof arrangement with 2.5- and 12.7-mm butt joints.
Sets of two and six heat flux transducers were placed at. the underside of the deck at various locations with respect to the insulation joints . The measured heat fluxes were used to estimate heat flux as a function of distance from the joint and from this to compare heat losses with and without joints.
Units: SI
Citation: Symposium, ASHRAE Transactions, 1985, vol. 91, pt. 2B, Honolulu, HI
Product Details
- Published:
- 1985
- Number of Pages:
- 15
- File Size:
- 1 file , 880 KB
- Product Code(s):
- D-HI-85-11-2
