Using the most current Concrete Form HDO technology, our Crown Alkamax is engineered with a proven Melamine HDO that can best stand up to high-alkalinity concrete mixes as it is the most durable panel in the Crown Performance Panel product lineup.

Features & Benefits

Crown Alkamax is constructed with high strength Douglas fir inner plies and durable hardwood face and back veneer. The high resin content Melamine HDO is applied in a one-step process. All adhesives used are fully waterproof phenolic resins that meet CSA exterior glue bond standards.

Available in 1220 mm x 2440 mm and 610 mm x 2440 mm in 17.5 mm thickness

  • APA Structurally Certified
    All of our Hardwood products are structurally certified by the APA and undergo rigorous inspection and testing by our Quality Control team.

  • Melamine HDO
    Crown Alkamax Melamine HDO provides the highest level of alkaline resistance of any Crown Performance Panel.

  • Hardwood Face and Back
    A durable hardwood veneer is used for the face and back providing a smoother pouring surface and a more durable panel than traditional softwood panels.

  • Two Piece Inner Plies
    Our two piece, Douglas fir inner ply construction method is engineered to provide a more solid panel that can better stand up to job site wear and tear.

  • Multi-Layer Edge Protection
    For additional moisture protection, all panels are edge puttied and then coated with a silver, aluminized, resin-rich alkyd edge seal.

  • Factory-Applied Release Agent
    For safety reasons, Crown Alkamax does not come factory coated with release agent. Prior to each use, application of Nox-Crete or equivalent release agent is required.

    See Care & Handling for more information

Load-Span Tables

Allowable pressure (kN/m2) for the indicated deflection limits – 17.5 mm thickness – Wet Conditions

Support Span
(center to center)
L/270
(kN/m2)
L/360
(kN/m2)
203 mm 98 98
305 mm 60 45
406 mm 28 21
488 mm 17 13
610 mm 9 7

8′ Perpendicular to supports

Support Span
(center to center)
L/270
(kN/m2)
L/360
(kN/m2)
203 mm 73 73
305 mm 34 34
406 mm 19 17
488 mm 11 11
610 mm 7 6

8′ Parallel to supports

Note: Applicable for plywood across two or more spans
Load Tables developed by APA: The Engineered Wood Association

Features & Benefits

Crown Alkamax is constructed with high strength Douglas fir inner plies and durable hardwood face and back veneer. The high resin content Melamine HDO is applied in a one-step process. All adhesives used are fully waterproof phenolic resins that meet CSA exterior glue bond standards.

Available in 1220 mm x 2440 mm and 610 mm x 2440 mm in 17.5 mm thickness

  • APA Structurally Certified
    All of our Hardwood products are structurally certified by the APA and undergo rigorous inspection and testing by our Quality Control team.

  • Melamine HDO
    Crown Alkamax Melamine HDO provides the highest level of alkaline resistance of any Crown Performance Panel.

  • Hardwood Face and Back
    A durable hardwood veneer is used for the face and back providing a smoother pouring surface and a more durable panel than traditional softwood panels.

  • Two Piece Inner Plies
    Our two piece, Douglas fir inner ply construction method is engineered to provide a more solid panel that can better stand up to job site wear and tear.

  • Multi-Layer Edge Protection
    For additional moisture protection, all panels are edge puttied and then coated with a silver, aluminized, resin-rich alkyd edge seal.

  • Factory-Applied Release Agent
    For safety reasons, Crown Alkamax does not come factory coated with release agent. Prior to each use, application of Nox-Crete or equivalent release agent is required.

    See Care & Handling for more information

Load-Span Tables

Allowable pressure (kN/m2) for the indicated deflection limits – 17.5 mm thickness – Wet Conditions

Support Span
(center to center)
L/270
(kN/m2)
L/360
(kN/m2)
203 mm 98 98
305 mm 60 45
406 mm 28 21
488 mm 17 13
610 mm 9 7

8′ Perpendicular to supports

Support Span
(center to center)
L/270
(kN/m2)
L/360
(kN/m2)
203 mm 73 73
305 mm 34 34
406 mm 19 17
488 mm 11 11
610 mm 7 6

8′ Parallel to supports

Note: Applicable for plywood across two or more spans
Load Tables developed by APA: The Engineered Wood Association

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CROWN Ax – JAN 2018