Roof Shingle Installation Patterns

The 3 tab asphalt shingle also called a composition shingle or fiberglass shingle is the most common type of roofing shingle.

Roof shingle installation patterns.

When installing shingles start by laying a narrow row of shingles at the bottom of the roof along the edge. Check with your roofing dealer to learn about any installation differences. Overlap each row at least 3 to 4 inches. Asphalt shingles nailed in a ladder pattern or using the racking method.

Some were even diamond patterned roof shingles. Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps. Install new flashing metal. Closed valleys are completed during shingle installation.

Rather shingle installation patterns are methods of orienting and interlacing roof shingle courses to maintain the offset of joints between shingles in successive courses and to speed production by establishing a regular and predictable installation process. This article series defines shingle laddering an installation pattern and it explains how to identify evaluate shingles installed in this ladder pattern. Other shingle design patterns have come and gone including shingles that once installed simulated the look of fish scales or had interlocking t shapes scalloped and beavertail rounded tabs. Three tab shingles are still widely available and used.

Repeat this basic pattern alternating shingles across the roof working toward the right side using the chalk line to keep the shingles straight horizontally. Because the bending can stress and deform shingles especially in cold weather the ends of those shingles may warp over time creating a prominent pattern on the roof. If your roof will have open valleys which iko recommends now is when the valleys should be lined with a pre formed width of corrosion resistant metal. Using your staple gun secure the felt to the roof.

Pattern curling is caused by the roofer having to lift the end tab of every other shingle to install the last shingle nail at the end of the next shingle. Use 4 nails per shingle and 6 nails on the prevailing windward sides of the roof as wind resistance nailing. For decades the three tab strip shingle dominated the roofing industry with the characteristic geometric brickwork pattern it created on the roof. Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails.

The information here describes the various sorts of roof leak wear and cosmetic issues caused by shingle laddering as an example of something a bit less than the. If you live in an area with inclement weather you should consider using a special ice and water protector. Other composition shingles such as architectural and random cutouts are installed using most of the same techniques. Most metal shingles will be attached to the roof using metal shingle.

Valleys can either be open or closed open valleys are not covered with shingles closed valleys are. Start by laying asphalt felt or other underlayment over the roof.