Attach Sheet Metal To Drywall Fire Rating

If a conventional 1 2 inch thick sheet of drywall will stand up to 30 minutes of fire then the added 1 8 inch found in the type x drywall along with its other properties will double your margin of safety to 60 minutes.

Attach sheet metal to drywall fire rating. Sheet metal penetrations are used in rated assemblies and when correctly fire caulked become part of that assembly. I just bought a house and we re trying to attach some stuff to the walls. For this reason a fire rated drywall is sometimes called one hour fire wallboard. Corrugated metal panels are easily recognizable on sheds barn roofs or building exteriors where the metal helps protect the structure beneath from the elements.

The metal extends the whole length and height of the walls except for a few feet at the front of the 1st level. Then take your power drill and drive the threaded anchor into the drywall just like you would with a normal screw. But when it is used one on each side of a properly framed wall it can become a fire rated wall. 251 requirements including 1 to 4 hour fire ratings.

The thickness and number of the layers of type x gypsum wallboard are specified for each. The mbma fire tests of exterior walls in 1997 resulted in a new uldesign no. 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. The ratings are for unsymmetrical walls that require ratings from both sides.

As a rustic or industrial design element however you can install the panels indoors over drywall. Structurally sound application meets us and canadian regulations such as ansi ast e119 and nspa no. X wallboard will necessarily provide one hour fire protection in an actual fire or last for an hour in a new laborato ry fire test. Fire ratings are based on an assembly.

As with the expansion anchor drive it in until it sits flush with the drywall. Start by drilling a hole about the size of the tip of the threaded anchor. The most cost effective solution for applying drywall to interior structural beams and columns. One sheet of 5 8 type x sheetrock has no fire rating.

I am not aware of a fire rated wall assembly using sheet metal. Even if 5 8 type x wallboard is referred to using terms like one hour board or has a one hour fire rating this does not mean that either a particular assembly system incorporating 5 8 type x. V421 which pro vides 1 and 2 hour fire resistance ratings for exteri or walls in metal buildings. Type here page 2 of 2 framing supporting garage ceiling separation from habitable space is protected by gypsum board table r302 6 any ducting penetrating the wall or ceiling between the house and garage that is not a minimum 26 gauge sheet metal is enclosed within a protective assembly such as a shaft chase or soffit and has no openings.