This standard is used solely to measure and describe properties of products in response to heat and flame under controlled laboratory conditions and should not be used to describe or approve the fire hazard of materials under actual fire conditions.
Batt insulation above suspended ceilings.
Sit the insulation flush against the hanger wires so that there won t be any air space between neighboring strips of batting.
It is available in thicknesses to 12 inches and r values up to r 38.
Also improves ceiling stc acoustical performance by 4 10 points.
Acoustical ceiling batts are available unfaced and kraft faced without stapling tabs for installation on suspended ceilings.
The other is typically a wood frame structure with a truss roof kraft faced fg batts stapled between the lower truss chord and a suspended ceiling below.
The surface burning characteristics of ecotouch insulation were derived from products tested in accordance with astm e84.
Sonobatts insulation is designed for use over ceiling panels in a suspended ceiling system.
The batt insulation should be unfaced and can be of various thicknesses varying on the stc required.
When batt insulation is installed above suspended ceilings the installations should conform to the fire safety requirements of the prevailing building code.
Dropped ceiling grids are typically 2 foot by 2 foot or 2 foot by 4 foot so they accommodate standard 24 inch fiberglass insulation batts.
Sonobatts and thermal batts may be used above suspended ceilings but not in areas with high inside relative humidities.
The national electrical code prohibits installation of any insulation over or within 3 76 mm of recessed light fixtures unless approved insulated ceiling ic lighting fixtures are used.
These leak like crazy too and of course after a few years some insulation falls down poor stapling or gets disturbed by some tradesman or another and the problem gets worse.
Add the batt insulation.
In many commercial jobs however code officials approve insulation applications that do not conform to the prevailing building code.
For the best results use batts that have paper facing.