FAQ: Where Should A Plywood Panel Marked Exposure 1 Be Used?

What is exposure 2 plywood?

Exterior – Exposure 2 Interior type with intermediate glue. Intended for protected applications where only slight exposure to moisture is likely to occur.

What is plywood exposure durability classification?

What are the plywood exposure durability classifications? Plywood is manufactured in four durability classifications namely exterior, exposure 1, exposure 2 and interior. These classifications show how well the bonding agents can resist the exposure to moisture.

What is Exposure 1 rated?

Exposure 1 rated sheathings, either OSB or Plywood, have a fully waterproof bond and are designed for applications where construction delays may be expected prior to providing protection. Exposure 1 rated sheathings are made with the same exterior adhesives used in Exterior rated sheathings.

What is rated sheathing plywood?

Rated Sheathing is a quality middle-grade plywood material, available in a variety of thicknesses, well suited for flooring or about any other plywood need.

What is the difference between ps1 and ps2 plywood?

PS 1, Structural Plywood, establishes requirements for structural plywood. PS 2, Performance Standard for Wood-Based Structural-Use Panels, establishes requirements for structural wood-based panels such as oriented strand board (OSB), waferboard and certain types of plywood.

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Is CDX plywood structural?

This type of plywood is also referred to as “structural plywood;” a designation which means that it is intended for structural applications. CDX plywood is an exterior grade plywood only in the sense of considering the adhesive used for connecting the veneer plys.

What is plywood span rating?

Span Rating denotes the maximum recommended centre to centre spacing of supports in inches over which the panel should be placed with its strength axis across two or more supports. The further the supports are spaced, the thicker the panel needs to be.

What does APA mean on plywood?

APA – The Engineered Wood Association represents North American manufacturers of plywood, OSB, glulam, I-joists, and structural composite lumber.

What size is 40 20 plywood?

x 4 ft. x 10 ft.; Actual: 0.593 in. x 48 in. x 120 in.)

What is the difference between CD and CDX plywood?

CDX sheathing is used primarily by contractors to build exterior walls and roofs. The letters “CD” represent the veneer grades used on the front and back, and “X” means the glue (not the wood) is rated for outdoor exposure—but only for a short time.

What is C plugged plywood?

C-C Plugged Exterior. An Exterior-type touch-sanded plywood panel with C-Plugged-grade face, C-grade back and inner plies. Bonded with exterior glue. Commonly used for severe moisture conditions, exterior balconies and decks, refrigerated or controlled atmosphere rooms, and boxcar and truck floors. C-D Plugged.

How Long Can OSB be exposed to weather?

OSB 3 is classified as resistant to humid conditions. This is a liability choice to avoid misunderstandings. We have had OSB 3, also in horizontal orientation, exposed to rain for at least 4 months.

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Is sheathing the same as plywood?

Plywood sheathing (OSB or plywood) is often mistaken for plywood underlayment. They are not the same. Plywood sheathing is most often used to construct the structural sub-floor. Plywood sheathing can either be OSB or all plywood.

What is RTD plywood used for?

Exterior panels sometimes referred to as RTD sheathing, are designed to hold up to constant moisture. They are completely waterproof and are great for installing in places where you expect consistent exposure to moisture. This RTD sheathing is great for roofs and other outdoor applications.

Is sheathing plywood waterproof?

Exterior means the panels have been waterproofed and can withstand inclement weather. Use exterior rated plywood for permanent outdoor structures that will be exposed to water long-term. Exposure 1 means the panels have been waterproofed and can withstand exposure to the elements during construction.

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