An alternative to vinyl siding fiber cement a mixture of cement sand and wood fibers manages to achieve very high fire resistance without sacrificing convenience and durability many fiber cement products carry a class a fire rating meaning that they can withstand several hours of heat before melting down.
3 8 wood siding fire rating.
Steel siding not only offers protection against a fire it is also naturally resistant and does not require the use of fire resistant treatments.
Plywood siding t1 11 plywood white wood siding shake wood siding eastern cedar lumber 3 8 osb 4x9 related products plywood siding panel t1 11 8 in oc nominal.
Rollex navigator steel siding for example has a class a fire rating.
A class a rating means it is going to offer the maximum protection possible.
Wall finishes and their ratings.
It is used to meet restrictive fire performance criteria and or to reduce insurance rates.
Exterior fire x treated siding is often accepted as an alternate for non combustible.
The highest rating possible for fire resistance.
3 8 wood structural panel with exterior glue 5 minutes 15 32 wood structural panel with exterior glue 10 minutes.
The period of time a fire resistant building element like jameshardie siding along with other components of the assembly maintains the ability to confine a fire continues to perform a given structural function or both as determined by astm e 119 tests.
Your wood framing members are required to be not more than 16 on center.
When they are you get 20 minutes in a wall and 10 minutes with floor and roof joists.