Roof Ceiling Assemblies

You can use only the specific type size and minimum.

Roof ceiling assemblies.

These assemblies are created by eliminating ventilation openings and moving the thermal moisture and air control boundaries to the plane of the roof deck. Concrete with cellular steel 3 hr. Hot mopped or cold application class a b or c covering or single ply membrane ballasted adhered or mechanically attached to the insulation. I am looking for a 1 hour roof ceiling assembly for wood truss construction.

No ceiling or suspension system product alone constitutes a fire rated assembly. With no limit on max. Hot mopped or cold application class a b or c covering or single ply membrane ballasted adhered or mechanically attached to the insulation. An external installation on the roof that uses the vent pipe system to prevent water seeping in and create damage.

With 1 1 2 38 mm type s screws 8 203 mm o c. 24 610 mm with 1 1 4 type s or w screws. Polyisocyanurate insulation boards 1 thickness min. Web stiffener you can frame the roof out of i joists duplicating much of what s done with solid sawn lumber but it s important that the manufacturer s recommendations be followed just as was the case with floor framing.

Roof ceiling wood framed 5 8 15 9 mm toughrock fireguard c applied perpendicular to the resilient channels spaced 12 305 mm o c. I would like to apply the drywall directly to the bottom of the truss and also have insulation for sound control. A waterproofing seal installed at the intersection of the roof and chimney and used to prevent moisture. The handbook includes the following about fire resistance assemblies see section 17a and section 17b.

Ul tests rate an entire assembly. Floor ceiling designs a003 3 hr. With no limit on max. A window installed on the roof or ceiling for the purpose of daylighting.

Polyisocyanurate insulation boards 1 thickness min. Unvented roof assemblies such as conditioned attics and unvented cathedral ceilings are becoming common in north american construction. Roof ceiling framing cut must not overhang inside of plate. One hour roof ceiling assembly.

3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete. Birdsmouth cut allowed only at low end joist bearing. Ibc item 4 or item 5 would allow use of assemblies tested as floor ceiling or roof ceiling in the other application even if not specified as such in the listing based upon rational design provided to the building official.