Photograph of plywood © Daniel Friedman Index: Building Sheathing Products
Types of roof, wall & floor sheathing materials

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Roof, wall & floor sheathing alternatives:

This article describes the common types of roof, wall & floor sheathing materials used in residential & light commercial buildings.

These include roof plywood, OSB, gypsum board and steel sheathing, wall sheathing using those materials and also foam insulating board products, and floor sheathing including those materials and also concrete slabs.

The article also refers to engineered wood panels used for building roof, wall or floor sheathing.

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Index to Roof, Wall & Floor Sheathing Products

Roof Sheathing Products

Photograph of OSB and FRT plywood © Daniel FriedmanRoof sheathing forms the base to which roof coverings are fastened and it also forms a component of the building's supporting structure.

Common roof sheathing materials include plywood roof sheathing, oriented strand board or OSB sheathing, steel sheathing/roofing combinations, and though not currently in widespread use, roofs have also been sheathed with gypsum board, fiberboard products.

It is noteworthy and perhaps counterintuitive that the volume of building sheathing used for floors and roofs in North America is roughly twice that used for wall sheathing, perhaps [OPINION] because roof leaks take a more severe toll on roof sheathing than leaks into wall structures.

Included are

Gypsum board wall sheathing bracing (C) Daniel Friedman

Wall Sheathing Products

LVL board siding

Foam insulating sheathings come in a variety of foam formulations including extruded polystyrene, expanded polystyrene, and polyisocyanurate. Each foam has its particular R-value associated with the material formulation and thickness of the panel.

Regardless of foam type, however, foam sheathing is the most insulative of all the sheathing options. Foam sheathing does require corner bracing, as it is not structural in nature. ... Foam sheathing does require corner bracing, as it is
not structural in nature.

While many options exist for sheathing products, these products have a number of issues related to their adoption. These issues are related to their application, their structural limitations, and material characteristics, which impact thermal and moisture performance. When considering alternatives to traditionally used sheathing products, specifiers should factor in building design and local climate conditions. .

.. other than the imported wood panels or wood boards, these sheathing options do not act as a nail base. This complicates cladding attachment as additional nailers or care to attach to studs is required. - source:

Floor Sheathing Products (in addition to the above)

For floor sheathing one adds to the products listed above concrete slab on grade construction.

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Continue reading at DEFINITIONS of ENGINEERED WOOD OSB LVL etc or select a topic from closely-related articles below, or see our complete INDEX to RELATED ARTICLES below.

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