Wood Fiber Insulation |
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Wood-Fiber Insulation Boards are one of the first industrially made insulation products. Despite serious competition from mineral fiber and plastic foam products today. Why using Wood-Fiber Insulation Board:
- Wood is a sustainable raw material with not very energy intensive processing. It's ecologically sound.
- It increases living comfort. The thermal capacity of wood is much higher than that of mineral fiber or plastic foam, as result Wood-Fiber Insulation Boards protect much better against summer heat.
- It supports uniform interior climate. The thermal conductivity of Wood-Fiber Insulation Boards is not much affected by moisture which enables diffusionopen wall designs. Picked-up moisture will be released over time without problems. This type of board is made up of wood fibers, held together by a binder; the board may be impregnated and/or coated with asphalt or paraffin.
Manufacturing processes of Wood-Fiber Insulation Board are varying, but certain operations are common to all fiberboard products. The raw material is always reduced to a pulp, after which the fibers are chemically treated with waterproofing materials. Then fibers are formed into large sheets of varying thickness by a felting process. After sheets are dried, cut and trimmed to a finished size. In order to have moisture-resistant for special projects, fiberboard either impregnate with asphalt during the manufacturing process, or coat with asphalt after they are produced. |
Mineral Fibre Insulation |
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Although the term mineral fiber historically refers to rock wool and slag wool, fiberglass products are also included in this category. These are also called man-made vitreous fibers (MMVFs), referring to the glassy, noncrystalline nature of these materials. A binding agent helps form the fibers into a rigid insulation board to be used for low-slope roofing systems. A glass-mat facer is applied to the top surface of the board. Mineral fiber insulation is compatible with bitumens and other adhesives, fire-resistant, dimensionally stable, and compatible with other roofing materials. Mineral fiber insulation is not as sensitive to moisture as fiberglass insulation because the separate mineral fibers absorb (but retain) only minimal moisture.
Mineral fiber board has a low compressive strength and is not recommended for loose-laid, ballasted roofing systems or mechanically fastened roofing membranes. Mineral Fiber Insulation is made up of inorganic fibers, non-metallic and amorphous, made from rocks, slag (metallurgical by-product) or glass, held together by a binder. |
Fiberglass Insulation |
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Fiberglass Insulation is a rigid roof insulation board composed of heat-fused, closed glass cells blown with hydrogen sulfide. Available for low-slope roofing systems, the boards typically have kraft paper facers applied to the surfaces after the material is formed. Cellular glass is compatible with bitumen and other adhesives and is fire-resistant. The board itself is moisture-resistant, but the paper facers, to which other materials are adhered, will deteriorate if wetted. The boards are rigid and require care in handling so that they do not crack or spall. The thermal resistance of cellular glass is stable but not as high as it is for other insulation materials. Fiberglass insulation board is a slightly modified product. After bonding fiberglass into a board shape, asphalt is used to bond a kraft paper facer to the top surface of the board. The paper facer will deteriorate if wetted, and the fiberglass board will retain water, reducing the thermal value. The thermal resistance of mineral fiber is stable and has a relatively high R-value compared with other insulation materials. |
Perlite Rigid Board |
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This type of board is made up of expanded granulated volcanic rock (perfite) and of cellulosic fibers held together by a binder. Perlite is different from other volcanic glasses because when the crushed ore is heated to a suitable point in its softening range, it expands from 4 to 20 times its original volume. Used for low-slope roofing systems, perlite insulation is manufactured as a rigid board that is composed of these expanded volcanic minerals combined with organic fibers and binders. An asphalt emulsion is used to treat the top surface to inhibit the absorption of bitumens. Perlite is compatible with bitumens and other adhesives, fire-resistant, dimensionally stable, and compatible with other roofing materials. The boards are covered with a specifie coating which prevents excessive absorption of asphalt at the time of it's application. The board will withstand impact, but care must be taken when handling the boards because they can break easily. The thermal resistance of the insulation is stable, but it has a relatively low R-value. Typically, perlite is not used with ballasted, loose-laid membranes because the board will readily absorb moisture. |
Expanded Polystyrene Roof Insulation |
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Expanded Polystyrene (EPS) Roof Insulation is compatible with all major roofing materials and systems, making it ideal for use in ballasted, mechanically fastened and fully adhered roofs under both membrane and built-up coverings. EPS provides permanent high R-Values, superior dimensional stability and documented resistance to moisture absorption and physical degradation. Expanded Polystyrene Insulation available in flat, tapered, and compound tapered panels.
EPS provides building owners, contractors and architectural specifies the confidence that comes from its successful application in millions of square feet of high-performance roof systems.
When specifying or applying polystyrene insulation, need to be assured that each panel is manufactured and fabricated according specifications. Most of EPS roof insulation is manufactured to meet ASTM C578-01 standards and is certified for compliance. Manufactured in thicknesses up to 36 inches using state-of-the-art software, flat, tapered and compound tapered panels can offer more slope and dimension options than other insulation products, which can design a roofing system that will meet all of your insulating, load-bearing and slope requirements. Custom layouts, shop drawings and quotations for any project, large or small can be provided.
Benefits EPS Roof Insulation:
- The lowest unit cost per R-Value of any rigid insulation board provides high insulating values that will not diminish over time.
- Superior dimensional stability helps assure that your roof insulation system remains tight and energy-efficient with wide list of roofing membranes.
- Resistant to the effects of moisture, yet it breathes, is not a vapor barrier and needs no venting.
- Compressive strengths ranging from 10 - 25 psi that can accommodate specific roof traffic and loads without deforming.
- Superior design flexibility allows our flat, tapered and compound tapered panels to offer more slope and dimension options than other insulations.
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