Fire Retardant Treated Wood Is Recognized As A Noncombustible Material

Construction types i and ii are defined in ibc section 602 as having all elements of non combustible materials except where permitted in ibc section 603.

Fire retardant treated wood is recognized as a noncombustible material.

Most importantly fire retardant wood is a critical safety precaution that attracts buyers reduces insurance costs and saves lives. The 2018 international building code clarifies that fire retardant treated wood frtw manufactured without using the pressure process must be impregnated with chemicals. A material whose core is noncombustible but is covered with a combustible lamination or paint is considered a noncombustible material provided that the thickness of the paint or lamination does not exceed. This treated wood contains a superior fire retardant chemical that remains stable in high temperature environments.

Based on astm e136 test fire retardant treated wood is a combustible material and hence it cannot be used in assemblies where the use of noncombustible materials is mandated in determining the fire resistance rating of an assembly through astm e119 test which of the following properties of the assembly are investigated. Types iii through v are primarily wood frame construction. Fire retardant treated frt wood is a. Fire retardant plywood is not considered non combustible but it can often be used in place of non combustible materials in certain situations.

The use of dricon frt wood can result in greater safety reduced insurance rates and overcoming building code limitations. Product overview fire retardant treated frt lumber reduces the effects of fire with innovative materials that impede flame spread and smoke development. Fire retardant wood is not wood that has been treated with a coating or other external fire retardant and it must be fully incorporated into the wood to be considered a fire retardant wood. Type iii is wood frame with noncombustible or fire retardant treated wood exterior walls type iv is heavy tim ber and type v is generally thought of as wood frame.

It is far less combustible than traditional plywood which insurance companies the international building code ibc and other sources may take into consideration. In determining the fire resistance rating of an assembly through astm. The model building codes require that every piece of fire retardant treated wood bear the identification mark of an approved inspection agency. And does not increase the corrosivity of metal hardware in contact with the wood.