Townhome Roof Sheathing Frt

Located on buildings with less than a 10 feet fire separation distance shall be securely attached to framing members and applied over fire retardant treated wood 23 32 inch wood sheathing or 5 8 inch exterior grade or moisture resistant gypsum board.

Townhome roof sheathing frt.

It is commonly called frt plywood you can tell the brand and quality by viewing a stamp. The fire resistance rated wall or assembly separating townhouses shall be continuous from the foundation to the underside of the roof sheathing deck or slab. Plywood sheathing delivers outstanding rigidity strength and versatility and is an excellent choice for. The stamp needs to be visible by code.

It is the premier choice for your project to meet fire codes while reducing dead load and wall thickness when compared to common alternatives. Venting requirements shall be provided in both soffit and underlayments. Thermal degradation of fire retardant treated plywood between 1985 and 1995 approximately 750 000 multi family housing units experienced roofing problems due to fire retardant treated frt plywood sheathing failure figs. It adds proven performance and durability to new homes room additions and renovations.

Fx lumber guard xt frt osb sheathing provides higher design values than pressure impregnated frtw plywood at the same thickness and creates a superior substrate for securely fastening exterior facing. Alternative products to using frt plywood as roof sheathing for the roof section covering the area of abutment of multiple living units have included masonry walls that penetrate the roof and fire resistant drywall laminated on the under side of the roof sheathing on either side of the wall. In dwellings such as townhouses and condomini ums some building codes allow the use of 4 ft 12 2 m of frt plywood as roof sheathing at the party separation wall in lieu of a fire rated parapet extending above the roof line. It was used on townhouses and condos roofs 4 feet on each side sometimes more of the walls separating each individual unit in the late 1970 s to early 1980 s.

Plywood sheathing is ideal for residential and light plywood sheathing is ideal for residential and light construction and every piece meets the highest grading standards for strength and appearance. The problem is caused by excessive exposure to solar radiation. Frt plywood because a fire can spread from townhome to townhome building codes often require the use of fire retardant frt plywood for roof sheathing depending upon the design of the structure. Fire exposure to frt plywood initiates a process of acid hydrolysis that increases fire resistance at a critical time.