Roof Deck Attachment Levels

Attachment c reinforced concrete roof deck a.

Roof deck attachment levels.

The current roof system and or deck of the building may not drain well and may cause water to pond accumulate in low lying areas of the roof. Roof deck attachment for the south carolina safe home program when a home is being upgraded as part of the program and the roof covering is removed and replaced the following procedure shall be performed if needed according to the nailing patterns detailed in table b 1. This measures on a scale of 1 weakest to 3 strongest how well your roof is attached to the rafters of the frame on your home. Beginning in october 1 2007 roofing contractors have been required to re nail the roof sheathing using 8d 8 penny ringshank nails at 6 inches on center.

Let s start with the best the c discount. A roof structure composed of cast in place or pre cast structural concrete designed to be self supporting and integrally attached to wall support system. I would like to be able to check box b for the client but i think 6d spaced 6 6 is weaker than 8d spaced 6 12 craig howard cmh home inspections. There are four levels of discounts from a weakest attachment lowest discount to c strongest attachment best discount.

I found 6d nails spaced 6 in the field is that considered of equal strength to 8d nails spaced 12 in the field. Metal roof deck made of structural panels that span from joist to joist. Attachment b metal deck a. Question about roof deck attachment.

To qualify for wind mitigation credits it s essential to have a roof that has the proper amount of nails with the proper length and design to withstand the most wind. All homes built 2002 to. Plywood osb with 2 1 2 inch nails spaced at 6 inches from the edge of the plywood and 12 inches in the field on 24 inch truss spacing. Ponding may shorten the life expectancy and performance of the new roofing system.

If roof deck.