The Crown HDO brand has had proven success for over 40 years and is ideal for applications that require higher panel reusability than a traditional Concrete Form MDO.

Features & Benefits

Crown HDO is constructed with high strength Douglas fir veneer.  The high resin content HDO is applied in a one-step process.  All adhesives used are fully waterproof phenolic resins that meet APA exterior glue bond standards.

Available in 48” x 96” and 24” x 96” in 1/2” to 1-1/8” thickness

  • APA Certified Panel
    Crown HDO panels are APA certified Struc-1 and meet or exceed APA’s Product Standard PS 1-09 for HDO Concrete Form.

  • Crown HDO Weights
    Crown HDO can be specified as either one or two sided panels with 100 or 120 weight pouring faces, and 30, 100 or 120 weight backs to meet your job site requirements.

  • Hardwood Options
    Crown HDO panels are also available with hardwood faces and backs.  This provides a smoother pouring face and more durable panel than traditional softwood panels.
    Click here for the Hardwood HDO page

  • 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 protection against moisture, all Crown HDO panels are edge puttied and then thoroughly coated with a silver, aluminized, resin-rich alkyd edge seal.

  • Factory-Applied Release Agent
    For safety reasons, HDO panels do not come factory coated with release agent.  Prior to each use, Crown HDO requires application of Nox-Crete or equivalent release agent.

    See Care & Handling for more information

Load-Span Tables

Allowable pressure (psf) for the indicated deflection limits for indicated thickness – Wet Conditions

Span 5/8″ 11/16″ 3/4″
L/270 L/360 L/270 L/360 L/270 L/360
8″ 1865 1865 2015 2015 2195 2195
12″ 1075 980 1220 1120 1340 1325
16″ 590 445 685 520 755 630
19.2″ 350 265 415 310 510 385
24″ 180 135 220 165 270 205

8′ Perpendicular to supports
Span 5/8″ 11/16″ 3/4″
L/270 L/360 L/270 L/360 L/270 L/360
8″ 1175 1175 1260 1260 1515 1515
12″ 545 410 605 455 890 745
16″ 230 170 260 195 435 325
19.2″ 160 120 185 140 275 235
24″ – – – – 160 120

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 HDO is constructed with high strength Douglas fir veneer.  The high resin content HDO is applied in a one-step process.  All adhesives used are fully waterproof phenolic resins that meet APA exterior glue bond standards.

Available in 48” x 96” and 24” x 96” in 1/2” to 1-1/8” thickness

  • APA Certified Panel
    Crown HDO panels are APA certified Struc-1 and meet or exceed APA’s Product Standard PS 1-09 for HDO Concrete Form.

  • Crown HDO Weights
    Crown HDO can be specified as either one or two sided panels with 100 or 120 weight pouring faces, and 30, 100 or 120 weight backs to meet your job site requirements.

  • Hardwood Options
    Crown HDO panels are also available with hardwood faces and backs.  This provides a smoother pouring face and more durable panel than traditional softwood panels..
    Click here for the Hardwood HDO page

  • 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 protection against moisture, all Crown HDO panels are edge puttied and then thoroughly coated with a silver, aluminized, resin-rich alkyd edge seal.

  • Factory-Applied Release Agent
    For safety reasons, HDO panels do not come factory coated with release agent.  Prior to each use, Crown HDO requires application of Nox-Crete or equivalent release agent.

    See Care & Handling for more information

Load-Span Tables

Allowable pressure (psf) for the indicated deflection limits for indicated thickness – Wet Conditions

Span 5/8″ 11/16″ 3/4″
L/270 L/360 L/270 L/360 L/270 L/360
8″ 1865 1865 2015 2015 2195 2195
12″ 1075 980 1220 1120 1340 1325
16″ 590 445 685 520 755 630
19.2″ 350 265 415 310 510 385
24″ 180 135 220 165 270 205

8′ Perpendicular to supports
Span 5/8″ 11/16″ 3/4″
L/270 L/360 L/270 L/360 L/270 L/360
8″ 1175 1175 1260 1260 1515 1515
12″ 545 410 605 455 890 745
16″ 230 170 260 195 435 325
19.2″ 160 120 185 140 275 235
24″ – – – – 160 120

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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USA – CROWN HDO – OCT 2022

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