Exterior Gypsum Board Vs Plywood

Widely recognized by the gold color densglass fiberglass mat gypsum sheathing has an exemplary track record that spans more than 30 years.

Exterior gypsum board vs plywood.

Exterior soffit fiberglass faced gypsum sheathing contributes excellent fire water and mold resistance in soffit application whether used as an underlayment for various exterior finish systems or is directly finished itself. The top 5 exterior sheathing materials include. Moisture also affects the strength of plywood. 1 widely recognized by its goldcolor densglass sheathing has an exemplary track record that spans more than 30 years.

It is a preferred substrate under brick stone stucco siding and eifs due to its ability to protect a structure against incidental moisture during and after construction. Exterior gypsum sheathing is designed for direct attachment to wood framing with. It performs well in both warm and cold environments and resists sagging when applied parallel to framing spaced no wider than 16 406 mm o c. Waferboard is far less expensive than plywood.

A 5 8 inch sheet of plywood weighs 1 8 to 2 1 pounds per square foot versus 2 75 psf for a sheet of 5 8 inch drywall. However it tends to be weaker and less resistant to water than plywood. These two elements are mixed together and sandwiched in between two large sheets of sturdy paper. Regular drywall has a very similar stc to plywood osb or mdf.

Osb has over 70 market share for structural panels. Or perpendicular to. This means that the average 4 by 8 sheet of drywall can weigh 20 to 30 pounds. So while exterior glued plywood can be used outdoors it works best when moisture content remains low.

Don t leave the integrity of your exterior walls to chance. Gypsum based structural sheathing is a panel type material made of a noncombustible core primarily gypsum with a paper surfacing on the long edges face and back. Plywood is made up of three or more sheets of composite wood that are pressed together to make a large sheet that is usually a 1 2 inch thick. Exterior gypsum sheathing is recommended for use in residential or commercial buildings and provides fire resistance and additional structural strength when used under exterior finishes such as wood metal or vinyl siding masonry veneer stucco shingles etc.

For improved soundproofing quietrock drywall is the best way to go. However it is much cheaper and can be double layered for the same price or even less than a single layer of mdf. Diagonal tongue and groove. The biggest complaint against osb is that it doesn t handle moisture very well so it is more suited for indoor use.

Because of its correlation to structural integrity it is important to take wall sheathing materials and methods into consideration when planning a new home build or remodel. Quietrock is sheetrock that has an improved stc rating while still having the benefits of gypsum board.