RECOVERY - Replace roof Bldg. 501 @GAFB

Added: May 01, 2009 2:11 pm

RECOVERY

DEMOLITION:
1) The contractor shall remove the existing tar and gravel roof.
2) The contractor shall remove/reinstall all vents and hatches on the roof.
3) The contractor shall remove all decking and insulation down to concrete decking.
4) The contractor shall remove the satellite dish.

NEW WORK:
Architectural:
1) The contractor shall provide 1 ply felt to concrete deck as the roofing material is demolished to ensure building remains watertight.
2) The contractor shall provide new wood frame at a slope of ½" per foot
3) The contractor shall provide fireproofing to wood frame equal to Contego Intumescent Latex Film.

4) The contractor shall provide a shallow metal deck. Roof deck units shall be a 9/16" deep Type S3 unit fabricated of 22 gauge design thickness or thicker steel and shall be zinc-coated in conformance with ASTM A 525, G90 coating class.
5) The contractor shall provide 3" of polyisocyanurate (polyiso) insulation that meets R-21 requirement.
6) The contractor shall provide new 6 mil polyvinyl vapor barrier.
7) The contractor shall provide 1" of urethane roofing.

8) The contractor shall remove/reinstall dome.

Plumbing:

1) The contractor shall raise vents, if needed.

Electrical:

1) The contractor shall remove/replace lightning protection system & ensure that it is operational.

2) The contractor shall remove/replace all security lights as necessary and ensure they are operational.