Roof Curb Sound Insulation

Specifications often call for sound curbs or sound attenuating curbs.

Roof curb sound insulation.

Roof curb shall be internally reinforced with angles 48 on center and factory installed wood nailer. Minimum curb height is 8 on shortest vertical height standard height is 12. All pennbarry roof curbs attenuate sound. Curb mounted insulation helps absorb percentages of this sound.

All welded 18 gauge galvanized steel construction. Products manufactured in the usa by kinetics noise control. Sound attenuation batt insulation complies with astm c 665 type i astm e 136 and the mea 332 83 m requirements of new york city. Height to be 8 above finished roof or as de tailed.

Top of all roof curbs shall be level with pitch built into curb when deck slopes. Heights to be 8 above finished roof deck or as detailed. Contractor fabricated roof curbs will not be accepted. Roof curbs to be insulated with 1 1 2 thick 3 lb density fiberglass insulation and have factory installed wood nailers.

Curb mounted insulation helps absorb percentages of this sound. Sound attenuating curbs in several curb styles contains a streamline modular core of special acoustical fiberglass sound absorbing cells in a galvanized steel frame that reduces transmitted noise by approximately 40 and reduces total air flow by only 3 to 4. Custom sizes with any roof pitch. The surface burning characteristics of sound attenuation batt insulation were derived from product tests per astm e 84.

Roof curbs shall be level at the top with pitch built in when deck slopes 1 4 per foot or greater or as detailed. Fastcurbs offers custom roof curbs metal building roof curbs rooftop equipment rtu curb equipment rails skylight curbs and custom rooftop unit adapters. And skymaster power roof exhausters on exceptionally quiet ventilating applications or where the specifications require sound attenuating curbs. This acme development utilizes a core of modular type sound absorbing cells that exposes a very large sound absorbing surface to the sound transmitted to the curb from the power roof ventilator.

1 1 2 fiberglass sound attenuating thermal insulation. Internally insulated with 1 1 2 thick 3 lbs. Operational sound is a fact of life for any roof fan regardless of how expertly engineered or finely balanced. Insulation also mitigates outside noise coming into buildings.

Federal specification hh i 521f has been canceled and is replaced by astm c665.