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.
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 | 8.9 | 6.7 |
|
8′ Perpendicular to supports |
||
| Support Span (center to center) |
L/270 (kN/m2) |
L/360 (kN/m2) |
|---|---|---|
| 203 mm | 73 | 73 |
| 305 mm | 45 | 39 |
| 406 mm | 22 | 17 |
| 488 mm | 14 | 12 |
| 610 mm | 8.1 | 6 |
|
8′ Parallel to supports |
||
Note: Applicable for plywood across two or more spans, and on supports at least 1.5″ wide
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.
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 | 8.9 | 6.7 |
|
8′ Perpendicular to supports |
||
| Support Span (center to center) |
L/270 (kN/m2) |
L/360 (kN/m2) |
|---|---|---|
| 203 mm | 73 | 73 |
| 305 mm | 45 | 39 |
| 406 mm | 22 | 17 |
| 488 mm | 14 | 12 |
| 610 mm | 8.1 | 6 |
|
8′ Parallel to supports |
||
Note: Applicable for plywood across two or more spans, and on supports at least 1.5″ wide
Load Tables developed by APA: The Engineered Wood Association
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