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Dry Wall Nailing
The residential inspection checklist for dry wall nailing includes:

  • Shearwall nailing (size and spacing), including required edge blocking per shearwall schedules.
  • Unless otherwise noted in the engineered shearwall schedule / details, nailing shall be maximum 7 inches o.c. for ceiling and maximum 8 inches o.c. for walls as specified in Table R702.3.5, I.R.C.
  • For all "braced wall panels", nailing shall be (gypsum board) maximum 7 inches o.c. at edge and maximum 7 inches o.c. at field, section R602.10.3, item 5, I.R.C.
  • Gypsum board applied to ceiling framing members at 24 inches o.c. must be sag-resistant and so labeled (“no sag”, “ceiling board”, etc.), footnote d., Table R702.3.5, I.R.C.
  • Enclosed accessible space below stairways: minimum ½ inch gypsum board, section R302.7, I.R.C.
  • Approved moisture-resistant and mold-resistant gypsum backing board to be used in shower or tub compartments, section R702.3.8, I.R.C.
  • Appproved ½ inch moisture-resistant and mold-resistant gypsum backing board may be used on ceiling where frame spacing does not exceed 12 inches on center, section R702.3.8, I.R.C.
  • Unless properly weather protected, only gypsum "soffit board" can be used for exterior horizontal applications (incl. patio ceilings and entry / porch ceilings), ICC ES reporting.
  • Minimum 5/8 inch type “x” gypsum board required at all garage warm walls and at all garage bearing walls, City amended section R302.6, I.R.C.
  • Minimum 5/8 inch type “x” gypsum board required at garage ceiling and all structural support members, City amended section R302.6, I.R.C.
  • 5/8 inch type "x" gypsum board joints and penetrations are required to be tight, City policy.
  • Minimum 1 inch clearance (unless otherwise listed by type “B” vent manufacturer) required between type “B” vents and any gypsum wall-and ceiling board products.
  • Minimum 6 inch clearance required between gypsum wallboard and single-wall metal vent pipe, section G2427.7.8 and Table G2427.10.5, I.R.C.
***Please note:  Gypsum wallboard is a combustible material when adjacent to a heat source.

Contact Information

City of Litchfield Park 
Building Safety Department
214 West Wigwam Boulevard
Litchfield Park, Arizona 85340

Ph: 623-935-1066
Fx: 623-535-9754

Updated 4/22/16