Roofing fiberboard

Flat, uniform and lightweight, it pro- vides added protection over insulation, reliable stability under roof membranes and easy handling and cutting during installation. FiberBase RD also contributes. Withstands normal deck traffic.

Improves roof system rigidity. Adds rigidity to foam insulation and to the entire roof deck, and withstands normal deck traffic during and after membrane application.

Lowers energy consumption. Can be used in all asphaltic and single ply roofing systems and as a recovery board. Celotex roofing products are safe, easy to use, reliable and available in many different applications. The individual manufacturer of each system must approve of the intended use of our product as a substrate. There are many different single ply systems, and each system has its own specific requirements . Learn more at Sweets today.

This process, along with special attention in pulp preparation, in a superior quality product. It is also widely used as a separation board over existing roofs in recover installations.

In recover applications, all wet areas of the old roof must be removed. All loose and protruding gravel must also be . Membrane Composition Figure shows the thermal warp stresses developed in four-ply asphalt- organic felt, four-ply asphalt- asbestos felt, and four-ply coal tar pitch- organic felt membranes applied over fiberboard roof. Judicious choice in raw materials as well as special care in pulp preparation result in a high density and superior quality roof insulation fiberboard.

This very resistant fiberboard is specially designed for roof application and offer a compressive strength of at least pounds per square inch. The high density insulation. Each panel is surface treated with a black sealer to promote adherence of the roofing membrane and reduce adhesive or bitumen strike-in. Roof decking can serve both as an interior ceiling finish and as a base for roofing.

Heat loss is greatly reduced by adding fiberboard or other rigid insulation over the wood decking. The decking is blind-nailed through the tongue and also face- nailed at each support. Normalized thermal resistivity of extruded polystyrene products C and G exposed in laboratory and conventional roof applications.

Figure shows normalized thermal resistivity of two phenolic foams exposed in the laboratory and in conventional roofs with or without fiberboard overlay. In this case the aging curves have a . A finished board can be left plain or it can be impregnated with asphalt, which makes it more moisture-resistant. The fiberboard can also be coated with asphalt, which not only provides additional . It is recommended as an overlay board for polyisocyanurate insulation and may also . Mineral fiber board has a density higher than most of the other boards and a lower R-value at 2.

It is mostly used in combination with the other high density boards as a base fire resistive material. Polystyrene foam may be recycled. Perlite: Manufactured from expanded minerals and binders, per- lite insulation is noncombustible and has moderate thermal resistance, good strength, and excellent compatibility with most roofing materials. The perlite will absorb moisture. Wood fiberboard : Manufactured from wood or . Examples of Roof Insulation.

Click on an image to enlarge. EPDM over Densk over ISO over Steel roof - example: EPDM over Densk Prime over Isocyanurate insulation on the steel deck. Ballasted EPDM over soaking wet . Installing Johns Manville insulation and a JM cover board under your roofing membrane is the easiest way to increase the energy savings and protection for your roof.

These pieces are usually covered with a skin, foil,.