Sanded pine plywood

Overview

Sanded softwood plywood has a smooth, sanded face veneer (grade A or B) over a core and back of lower grades. It is what most people call "pine plywood" at a lumberyard: the sheet you reach for when you want a cheap, paintable panel that does not look like construction sheathing. APA says sanded plywood has B-grade or better veneer on one or both sides, with the standard size 48 by 96 in. The letters name the face and back: the first letter is the face veneer grade.

Pros

• Smooth face for painting or clear finish; far nicer than CDX.
• A cheaper alternative to birch or oak plywood. Toledo's 3/4 in AC radiata is $54.95, against $91.95 for domestic birch and $98.95 for red oak at 3/4 in.
• Strong, stiff and light for its cost; made to PS 1 and stamped.
• A choice of exposure ratings: Interior, Exposure 1 or Exterior.

Cons

• Softwood faces blotch and show prominent grain. A clear finish emphasises knots and patches.
• Core gaps and patches are allowed in C and D plies, so edges are rough and sometimes void-filled.
• Thickness is nominal: APA lists 23/32 in for "3/4", 19/32 for "5/8", and 15/32 for "1/2".
• Faces dent easily. The back (C or D) is rough.
• Not hard-wearing for tabletops.

Variants and subspecies

APA's sanded grades (all in the APA sanded guide, 1999):

• A-A: appearance on both sides; Interior, Exposure 1 and Exterior bonds.
• A-B: two solid surfaces.
• A-C: Exterior only, one appearance face; soffits and fences.
• A-D: Interior and Exposure 1; paneling, built-ins, shelving.
• B-B: utility, Species Group 2.
• B-C: Exterior utility.
• B-D: Interior and Exposure 1.
• Veneer grades are N (natural finish), A, B, C-plugged, C and D.
• Species: Wood is divided into five strength groups (APA). Radiata pine is covered in Arauco and radiata pine plywood and Radiata pine; southern pine in Southern yellow pine.
• ACX: see ACX plywood.

Working and finishing

Use a fine-tooth blade, score or tape the line, and sand the face lightly before finishing. Edges can be filled with wood filler, then sanded, or covered with iron-on edge banding or solid strips. Prime knot patches before paint, or they show. Screw into the face or the edge with pilot holes. Seal edges on A-C panels if they see weather.

Staining and finishing colour

Pine blotches in stain. Use a pre-stain conditioner or gel stain, or paint after priming. A clear finish brings out the yellow of the pine and the patches. Sand-through on the thin face is a risk, so use fine grits and a block.

Sustainability and handling

Pine plywood is usually from plantation-grown trees. Check the bond class: Exterior panels use waterproof glue, and Columbia Forest Products says PF is the glue in exterior structural softwood plywood. The EPA excludes structural plywood made to PS 1 from the TSCA Title VI formaldehyde rule (EPA FAQ, checked 2026-09-30); non-structural interior panels made with other glues may be covered, so look for the label. Sheets are heavy; store flat and dry.

Popular projects

Shop cabinets and storage, painted built-ins and shelving, closets, toy boxes, sheds and fences (A-C), and utility furniture where the look is painted or rustic.

Buying notes

Ask for the grade (A-C, A-D, B-C), bond class, and actual thickness. Toledo AC radiata (September 2026): 1/4 in $29.95, 3/8 in $32.95, 1/2 in $45.95, 5/8 in $49.95, 3/4 in $54.95, 1 in $83.95. Dunn Lumber lists Arauco ACX 3/4 in at $77.88. Pick sheets that are flat and have few patches.