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Types of Construction Plywood: Exposure, Use, Face, and Core
The types of construction plywood divide by exposure, by use, by face, and by core, and the builder who reads the label picks the sheet that the job needs. The panel that carries the exterior glue serves the weather, the sheathing grade serves the frame, and the sanded face serves the finish. The right type gives the frame and the finish the strength and the surface that the schedule asks for.
Types of Construction Plywood: the Families
The construction plywood falls into a few broad families that the yard stocks, and the builder who learns the families reads any label at the counter. The sheathing, the exterior, the marine, the sanded, and the form panels cover most of the stock that the site needs. The family that matches the use saves the time that the wrong sheet costs.
The glue that bonds the plies sets the first split, because the exterior adhesive that resists the water serves the weather while the interior glue serves the dry room. The builder who checks the exposure rating reaches the panel that survives the place. The glue that matches the exposure gives the panel its service.
The face that the mill sands sets the second split, because the sanded panel that carries the smooth face serves the cabinet and the shelf while the rough panel serves the hidden sheathing. The builder who matches the face to the place saves the cost on the sheets that stay covered. The graded face gives the panel its look.
By Exposure: Interior, Exterior, Marine
The interior panel serves the dry room, because the glue that bonds the plies holds in the low humidity that the heated house keeps. The builder who uses the interior sheet for the cabinet and the closet reaches the panel that stays flat in the dry air. The interior panel gives the dry room its service.
The exterior panel serves the weather, because the waterproof glue that bonds the plies resists the rain that the site sends. The builder who sheathes the wall and the roof with the exterior sheet reaches the panel that survives the open build. The exterior panel gives the structure its weather resistance.
The marine panel serves the soak, because the void-free core and the waterproof glue resist the water that the boat and the dock meet. The builder who builds the wet service reaches the panel that keeps its strength through the soak. The marine panel gives the wet job its life.
The Exposure One and the Covered Site
The exposure one panel sits between the interior and the exterior, because the glue that resists the damp serves the covered site that meets the humidity without the direct rain. The builder who uses the exposure one sheet for the protected frame reaches the panel that handles the build moisture. The covered panel gives the sheltered job its service.
The panel that the builder stores dry and seals at the edge reaches the best service from any exposure class, because the water that reaches the bare edge shortens the life of the sheet.
The Tongue and the Groove
The tongue-and-groove panel serves the deck, because the edge profile that locks the sheets together braces the subfloor and the roof against the gap. The builder who runs the T and G deck reaches the stiff surface that the tile and the shingle need. The grooved edge gives the deck the joint that holds.
The clipped corner that the maker cuts on the groove panel lets the sheets seat without the interference at the corner, and the builder who starts the run square reaches the deck that stays true.
By Use: Sheathing, Subfloor, Formwork
The sheathing panel serves the frame, because the sheet that nails to the stud braces the wall and carries the shear that the wind delivers. The builder who covers the wall with the rated sheathing reaches the frame that the inspector accepts. The sheathing panel gives the structure its strength.
The subfloor panel serves the floor, because the thicker tongue-and-groove sheet that spans the joist carries the tile and the traffic. The builder who glues and screws the subfloor reaches the quiet deck that the finish needs. The subfloor panel gives the room its base.
The formwork panel serves the concrete, because the film faced sheet that carries the release holds the wall and the slab to the shape. The builder who oils the form and strips it reaches the panel that serves the next pour. The form panel gives the pour its finish.
The Underlayment and the Overlay
The underlayment panel serves the resilient floor, because the thin sheet that smooths the subfloor gives the tile and the vinyl the even base. The builder who staples the underlayment on the offset seam reaches the floor that stays flat. The underlayment gives the finish its bed.
The overlay panel serves the worn deck, because the thin sheet that the builder lays over the old surface gives the floor a new face without the tear-out. The builder who glues the overlay reaches the deck that serves the extra years.
By Face and Grade
The face grade that the mill stamps tells the buyer the look and the use, because the A and the B faces that carry the sound veneer serve the cabinet and the visible shelf while the C and the D faces serve the hidden sheathing. The builder who matches the face to the place spends the stock well. The stamped face gives the panel its purpose.
The sanded panel that carries the smooth face serves the finish, because the veneer that the mill sands takes the paint and the stain without the tearout. The builder who paints or stains the visible panel reaches for the sanded sheet. The smooth face gives the finish its base.
The plugged and the patched panel serve the painted work, because the repair that the mill fills takes the coat that hides the patch. The builder who paints the plugged face saves the cost of the clear-grade sheet.
Sanded and Unsanded
The sanded sheet that carries the touch-ready face serves the cabinet that shows, and the unsanded sheet that carries the mill texture serves the sheathing that hides. The builder who keeps the sanded sheet for the visible part and the unsanded for the frame reaches the budget that the job needs.
The sanded face that the builder seals and paints reaches the smooth finish, and the unsanded face that the builder leaves rough reaches the grip that the shingle and the siding ask for.
The Fire-Rated and the Special Panel
The fire-rated panel that carries the treated core serves the wall near the stove and the furnace, because the sheet that meets the listing resists the flame that the code checks. The builder who reads the stamp reaches the wall that the inspector accepts. The rated panel serves the fire wall.
The acoustic and the moisture-resistant panels round out the special types, because the sheet that carries the dense core and the treated face serves the sound and the damp. The builder who matches the special panel to the room reaches the result that the design asks for.
By Core and Species
The veneer core that stacks the peeled plies serves the general build, because the panel that carries the sound layers holds the fastener and the load. The builder who checks the edge for the voids reaches the panel that the frame trusts. The veneer core gives the panel its strength.
The lumber core that the mill builds from the solid strips serves the furniture part, because the panel that carries the solid center holds the screw and the profile. The builder who builds the door and the table top reaches the core that the joinery trusts. The lumber core gives the piece its body.
The species that the mill peels shapes the face and the strength, because the Douglas fir and the pine serve the structural sheet while the birch and the oak serve the cabinet. The builder who matches the species to the use reaches the panel that the job needs.
Frequently Asked Questions
Builders ask these questions about the construction types.
What are the main types of construction plywood?
The sheathing, the exterior, the marine, the sanded, and the form panels cover the main types.
What is the strongest construction plywood?
The marine and the structural exterior rank among the strongest, and the rating and the core set the strength.
What is CDX plywood used for?
The C and D faces with the exterior glue serve the sheathing, the roof, and the subfloor.
What plywood for furniture?
The sanded hardwood-faced sheet on the sound core serves the cabinet and the shelf.
For the panel that carries the types and the grades, compare the stock at HYY, which runs Commercial Plywood for the general build and Film Faced Plywood for the formwork.