07215.doc

SECTION 07215

PART 1

GENERAL

a.

Scope: Furnish and install rigid roof insulation over all metal roof deck surfaces.

b.

Related Work: See Section 07510, (Built-Up Roofing). Roof insulation shall be furnished and installed by roofing Contractor.

c.

Submit manufacturer literature for each type of insulation to be utilized.

PART 2

PRODUCTS

a.

Type "A" rigid insulation board shall be minimum 1” thick, perlite based board conforming to ASTM C728 and Fed. Spec. #HH-1-529b. Fesco board by Johns-Manville or equal by U.S. Intec or Atlas. Perlite based insulation shall be manufactured and/or approved in advance by the membrane manufacturer and included in the roof system warranty. Taper as required, all crickets a minimum of ¼” per foot or as shown on the drawings.

b.

Bitumen: 220 degree Type IV, 33 lbs. per insulation layer. Supplied or approved by roofing system manufacturer.

c.

Additional materials and manufacturers to comply with roofing manufacturer's requirements.

d.

Wood Insulation Stops and nailers: Refer to Section 06100.

PART 3

EXECUTION

a.

Install in accordance with manufacturer's standard specification details for concrete decks.

(1) Metal Decks:

(a) Insulation shall be screw attached to metal deck with plates and deck screws approved by the manufacturer, fastener spacing shall provide a U.L. I-90 uplift rating.

(b) Fully mop tapered layer for crickets to first. Stagger all joints ½ panel each direction.

(2) Install all nailers required for back nailing or edge nailing of roofing system.

b.

Firmly set the units of insulation, long joints continuous and short joints staggered and fasten per Factory Mutual requirements.

c.

Closely butt all edges to insulation units without forcing into place. Cut and fit insulation where roof deck intersects vertical surfaces allowing a quarter inch back from all walls. Miter the insulation joints at ridges and elsewhere to prevent open joints and irregular surfaces. Cut all roof insulation to fit snugly around all pipes, roof penetrations and equipment curbs.

END OF SECTION

07215 - 1 H:\8348\8348003.23\Docs\B-3 Specs\Division 7\07215.doc November 1, 2005