First Row For Roof

Before you can begin setting asphalt shingles on your roof you must install a row of starter shingles.

First row for roof.

Set out the first second and all the rest of slates on a pitched roof. The sealant on an upside down three tab shingle ends up far too high up the roof to effectively seal the first course of the finished shingles. If these first shingles are not installed correctly there will be problems with the entire set of shingles. The height distance up the roof of the starter slate must be at least 3 inches greater than the vertical exposure on the first course of slate.

This 1 2 tab has to be cut off where it hangs off the left edge of the gable roof. Complete the second row offset one rafter width from the first then move onto the third row and so on until the last row extends past the peak of the roof. Lay the second row of shingles. And while this shortcut did protect the roof deck at shingle joints and cutouts it unfortunately left that first course of shingles unsealed and vulnerable to wind uplift.

These shingles are instrumental in making sure the asphalt shingles are correctly laid out on your roof.