Roof Shingle Nail Pattern

It starts with installing solid decking usually plywood or oriented strand board but that is not waterproof.

Roof shingle nail pattern.

Installing a roof is much more than just nailing shingles onto some boards. Red dots mark the nail holes for a 6 nail high wind nailing pattern on traditional 3 tab shingles note that the nails are just below the tar line. Steep slope use six nails and four spots of asphalt roofing cement for every full shingle for every full shingle as shown below. When six nailing a full shingle follow the nail pattern shown in figure 12 5 nails can be placed in the 11 2 nailable area.

Racking shingles sometimes also may create a condition called pattern curling where the shingles curl and blow in the wind at the places where the racked columns join because of lifting the end of a shingle to place the next shingle and lifting the end high enough to nail the next shingle underneath each of the overlapping shingles. The 3 tab asphalt shingle also called a composition shingle or fiberglass shingle is the most common type of roofing shingle. Check with your roofing dealer to learn about any installation differences. For all owens corning shingles roofing nails should penetrate into the wood deck by a minimum of inch or completely through the roof deck by a minimum of 1 8 inch.

Accurate nailing affects the performance of roofing shingles and it is also required by the international building. When nailing shingles proper penetration into the roof deck is essential to ensure the nail and shingle remain secure. Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps. Actual results may vary.

Asphalt roofing cement should meet astm d 4586 type ii. Bitumen roof shingles may be one of the simplest roofing materials to install but nevertheless they also require specialized and exact rules on how to be fastened. Keep your nails on either side of the gap and away from the middle of each individual shingle so that the gap in the shingle above doesn t expose the nail head. It is important to apply roofing nails in the right quantity and location to securely lock a shingle into its place.

Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails.