How can I get a 2 hour fire rating on my ceiling?
Intumescent paint can upgrade the structure to 2-hour rating. Products based on intumescent paint can typically be applied to steel, sheet material, sheetrock, composite panels, and interior woods.
What is a 2 hour rated ceiling?
Re: 2 hour fire rated ceiling. If the reason you need a 2 hr fire rated ceiling is due to an occupancy separation ie: dwelling below and storage above (usuable attic space) it is possible to obtain a two hr rating. You do need two layers of 5/8 type X sheetrock (standard 5/8 board won’t do).
What is a UL rated assembly?
The UL Certification Mark on fire resistant products, systems and assemblies is relied on by code enforcement officials and buyers to provide confidence that products and systems meet regulatory and market requirements. It is a key differentiator for products within the exterior wall assembly market.
What is a floor ceiling assembly?
FLOOR/CEILING ASSEMBLY is the term used to describe how a floor/ceiling is built. It is important because each assembly has a different thickness, components, and more importantly– fire and sound rating.
What is a 2-hour fire rating?
It means that the system has satisfied the requirements for a 2-hour rating specified in a relevant standard test. In the case of a building, it could mean that some of the construction elements and/or assemblies in that building have achieved a 2-hour rating in a standard ASTM E119 fire resistance test.
Does a ceiling need to be fire rated?
30 or 60 Structural Minute Fire Rating When a structural fire rating is needed from a suspended ceiling, it is usually either for 30 or 60 minutes – but this rating is less often required.
What is a UL finish rating?
The finish rating is defined as the time at which the wood stud or wood joist reaches an average temperature rise of 250°F or an individual temperature rise of 325°F as measured on the plane of the wood nearest the fire during the fire test using the standard time-temperature curve.
What is UL in fire rating?
A product with an Underwriters Laboratories mark is said to be “UL Listed.” With fireproof safes and files, a UL listing specifies the standard of protection the fireproof container provides its contents when exposed to fire.
What is a 2 hour fire rating?
What makes a 2 hour firewall?
Double the number of Type X sheets on the wall for a simple system installed over fire-resistant fiberglass insulation; each sheet of 5/8-inch Type X drywall is rated to resist fire for one hour, so two layers will produce a two-hour firewall.
How many layers of drywall do I need for a 2-hour rating?
two layers
As 2 hours of fire protection has become the standard for fire safety in America, it has become somewhat of a standard practice to include two layers of type X drywall within a building’s perimeter in order to achieve this required level of fire safety.