How To Starter Course Shingles Over Existing 3 Tab Roof

Why installing new shingles over old shingles can be good.

How to starter course shingles over existing 3 tab roof.

After the first shingle has been placed on the roof set the second starter shingle next to it. Let s start with the good. Rip cut the shingles for the first course so they butt up against the third course of existing shingles and are even with the front edge of the starter course. You can save.

When you should tear off your roof and start from scratch instead. Do not penetrate the shingles with the hammer. Because this is the starter course the second course will be placed directly on top of it. The first shingle should be centered over the line that you marked with chalk.

Their tab slots should not line up with the tab slots of the starter course if there are any. Place the top of each starter shingle firmly against. The first row of shingles should overhang the drip edge of the roof. Cut and install shingles rip cut the shingles for the first course so they butt up against the third course of existing shingles and are even with the front edge of the starter course.

Continue this until the first row of shingles is complete. If laying three tab shingles over three tab shingles it is important to nest the new shingles against the old to create a flat surface as friedman elaborates just below. To attach a 3 tab shingle align it with the layout line and drive nails 1 2 inch above the cutout slots including the half slots at each side. When roofing over your existing shingles can be a good idea.

Nail the shingles just above the tab slots. Their tab slots should not line up with the tab slots of the starter course if there are any. Many arizona homeowners with shingle roofs do decide to roof over their existing shingles because. Lay more shingles on the sides of the roof so that they overlap the start shingles.

Around an inch should do. Butt the edges together instead of overlapping them. Using four roofing nails or up to six in high wind areas secure the starter shingle to the surface of the roof. The next shingle should be placed and secured beside the first one.

Continuing with the starter shingles. This process starts with a 5 inch starter strip fit along the eaves and set against the second course of existing shingles see figure 2 16. To make your own use the flat solid part of the shingles and a heavy duty utility knife to cut pieces that are approximately 5 inches wide. Each shingle will require around 4 nails underneath the tar line and about half an inch under where the next shingle will overlap.

Drive a nail at one end first then drive the others. Secure the shingle with nails one inch from each corner.