Concrete poured with PolyForm panels has an extemely smooth, glossy appearance with no grain or patch transfer. Source: Salk Institute, La Jolla, California

PolyForm Concrete Forming Panels Superior Performance For Architectural Concrete Finishes PolyForm concrete forming panels are an excellent choice where architectural finishes are desired and high number of reuses are a factor. With reasonable care, up to 100 reuses can be expected. Because of the panel's high density polyethylene working face, concrete finishes are extremely smooth with no grain or patch transfer. Further, since concrete will not adhere to the surface of the panel, PolyForm panels eliminate the need for release agents or oils. PolyForm's unique surface overlay provides uniform hydration across the face of the pour, and eliminates wood sugars, dusting and other discoloration problems found with other types of concrete form panels.

Product Specifications       Width: 4 ft       Length: 8 ft, 10 ft       Thickness: 3/4" (7 ply), 1 1/8" (9 ply)       One working face: High density polyethylene .100 thick backed with .015 polyethylene backer sheet.       Struc. 1 Strength Class       Edges sealed, blue in color.       Substrate bears the grade-trademark of the American Plywood Assocation Load and Span Tables       1. Panel Thickness For Forming       When the face grain is applied across supports, strength and stiffness are greatest. Table 1 shows the necessary panel thickness when applied in this manner.       When the face grain is parallel to supports, the necessary panel thickness may be determined from Table 2 (above).       For more detailed information, refer to American Plywood Association "Plywood For Concrete Forming" and to American Concrete Institute "Formwork For Concrete".       2. Edge Support Under conditions of high moisture or sustained load to the panel, edges may have greater deflection than the center of the panel and may exceed calculated deflection unless panel edges are supported. Handling PolyForm Panels       1. Preparing PolyForm For Use       PolyForm requires no release agents or oils. The panels are ready for immediate use.       2. Pouring and Vibrating       PolyForm resists abrasion and impact. However, as with any surface, it can be damaged through improper use. The rate of pour should be limited to that used in the design of the form. Rubber-tipped vibrators are recommended and care should be used to not to damage form faces during vibrating.

3. Stripping       Most damage to panels happens during stripping and with proper care, panel life can be extended dramatically. The use of wood wedges rather than metal bars or pries to separate the form from the concrete is advised. Avoid throwing or dropping panels as damage to the edges can result.       4. Cleaning, Storage and Edge Sealing       After each use, clean the panels with burlap and flat, non-scratching tools such as plastic or wood scrapers. Be sure to remove all concrete residue from the surface of the panel so overlay and wood substrate are not pulled from the panel on subsequent pours. If desired, apply a light coating of chemically reactive release agent to aid panel performance.       Even though the panels are factory edge sealed, it is important that any cut edges or exposed wood at holes or openings be resealed with two coats of a high quality exterior polyurethane to retard moisture penetration. The plywood could swell at these locations if not sealed, causing indentations in the concrete.       Stack panels flat to prevent warping. To minimize degradation, store panels in a protected area to avoid direct sunlight. More detailed cleaning and storing information is available in American Concrete Institute "Formwork For Concrete". Repairing PolyForm Panels If panels do become damaged, you can fill in nicks and gouges to restore the surface continuity. Clean any concrete or release agent from the damaged area and apply a polyester-resin auto body putty. Be sure to apply a chemically reactive release agent to all repaired areas to avoid adhesion to the concrete on subsequent pours.

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Poly Tech, Inc.
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