Using Two Layers of Insulation in Single-ply Roof Systems May 15, 2001 USING TWO LAYERS OF INSULATION IN SINGLEPLY ROOF SYSTEMS By Lyle D. Hogan, PE, RRC A B S T R A C T The remarkable gain in market share for singleply membranes has been due, in part, to the recover configuration in which the products found wide use. A single layer of recover board insulation […] Read More
Roof Gardens: The Waterproofing Challenge May 15, 2001 November 2001 Interface • 25 Roof Deck Regardless of the type of roofing system, the roof deck must be designed with sufficient structural capacity to accommodate both live and dead loads. Single-ply roof membrane systems typically weigh 1 kilogram/10.24m2 (2 lb. per 100 sq feet), while more traditional systems are in the 2.26 kilograms to […] Read More
Compressive Strength of Polyiso Insulation May 15, 2001 C OMPRESSIVESTRENGTH of P o l y i s o I n s u l a t i o nBy PIMA Headline background: Isocyanurate cells under magnification (Courtesy Koppers Co.) The ability of rigid foam board to resist deformation or maintain shape when a force or load is applied is due to the physical property […] Read More
Designing Environmentally Responsive Low-Slope Roof Systems May 15, 2001 There is a genuine interest among enlightened building owners and roof system designers in adopting environmental objectives. In many countries, a whole generation has grown up in a culture sympathetic and supportive to ”green” issues, and many colleges and universities include environmental studies as part of their normal course work. The challenge facing the roofing […] Read More
Green Roofs: Infrastructure for the 21st Century; Exploiting the Last Urban Frontier May 15, 2001 Read More
Dens-Deck� Roof Board: Product Review, Testing, and Application Recommendations May 15, 2001 Read More
Project Profile: Wood Shingle re-Roofing Restoration of Chowan County Courthouse, May 15, 2001 PROJECT PROF I LE WOOD SHINGL E Restoration RER of Chowan OO County FIN Courthouse, G Edenton, NC By John L. Willers The Chowan County Courthouse in Edenton, North 1) and the interior (Phase 2). Phase 1 is complete and consisted Carolina, was constructed in 1776, and it was designated as a of restoring the […] Read More
