How to lay shingles over shingles

how to lay shingles over shingles

Asphalt Shingles over Cedar Shakes—Good Idea or Bad Move?

Jun 22,  · How to do it. Remove Caps. Remove the ridge caps. Doing it now will make it easier to keep the reroofing job clean. Use a flat pry bar or roofing shovel to Total Time: 24 hrs. Make a line of slats and boards from the pine sheeting, and install this on top of the shingles. For every 2 feet of the roof, you should install 1x4 inch pine boards along the length of the roof. Start at the bottom of the roof and work your way to the top of it. Use some 3-inch wood screws .

If you are looking to save time, installing new shingles over old shingles is a possible roof replacement solution. You want to be sure that you will be installing the shingles over only one other layer, though. The third layer of shingles will be too heavy to be supported. Re-roofing over old shingles can save you time and money since you will not have to rip off the old roof and how to lay shingles over shingles to have it hauled away.

Contact your local government office to inquire about local codes regarding installing new shingles over old ones. Building codes in some areas will prevent this type of installation. You will need a ladder to climb up to your roof. Ensure that you are wearing proper footwear with a good grip to avoid injury or falling. Before you begin installing the new shingles, be sure to inspect the roof for any damage.

Damaged shingles should be removed to check the decking for problems. Damaged decking will need to be repaired before you can install any new shingles. Install a layer of roofing felt over the roof before you begin installing the new shingles. The felt should be secured every six inches with nails or staples. The layers of felt should be overlapped by 1 inch as you work toward the roof ridge.

This will help keep any moisture from getting under the felt. You may want to wear work gloves to avoid injuring your hand or developing blisters. Use chalk line to mark a centerline down the roof from the ridge to the edge.

Now you will need to determine the number of shingles required to cover the roof along the edge for this first row.

Using a utility knife, remove the tabs from the shingles you will be using. The first shingle should be centered over the line that you marked with chalk. The shingle should also hang about a quarter of an inch over the roof edge. Secure the shingle with nails one inch from each corner. The next shingle should be placed and secured beside the first one. Continue this until the first row of shingles is complete.

Position one of the uncut shingles on top of a trimmed shingle. The uncut shingle should hang a quarter of an inch over the roof edge. Mark the location of the top of the uncut shingle on the felt. Use the chalk line to mark the line at that spot across the roof. Continue marking lines every five inches up to the roof ridge. Use the chalk to mark vertical lines from the center to the outside edge of the roof at six-inch intervals. Position a shingle with the first horizontal line.

Secure the shingle with four nails. Two nails should be placed an inch over the tabs, and two more nails should be placed an inch from the top. Continue doing so until the first row of uncut shingles is complete. Position the first shingle of the second row with the second horizontal line.

Nail the second row of shingles using the same what temperature do blue whales live in as the first row. Continue laying all the shingles row by row until you reach the ridge of the roof.

This project would have taken up more of your precious time had you removed your old shingles first. Now you can enjoy your new roof, and rest assured that it will hold up until it is time to be replaced. Working on your roof can be dangerousthough. If at any time you begin to how to setup compiz fusion unsafe or unsure of what you are doing, there is nothing wrong with calling a contractor.

We welcome your comments and suggestions. All information is provided "AS IS. All rights reserved. You may freely link to this site, and use it for non-commercial use subject to our terms of use. View our Privacy Policy here. Toggle navigation subscribe. Written by Laura Bloomfield. To ensure our content is always up-to-date with current information, best practices, and professional advice, articles are routinely reviewed by industry experts with years of hands-on experience.

Charles Ramos, Jr. What You'll Need. Ladder the size will what are the new releases at the movies on how tall your house is.

Safety gear gloves and boots. Roofing felt. Nail gun. Staple gun optional. Roofing shingles. Utility knife. How to Use a Chalk Line. Sustainable Options for Tile Roof Underlayment. The Total Roof System. Flat Roof Replacement Options. Related Posts Shingled over 1 layer and covered all pipe flashing. I noticed on the house I just moved into, they shingled over one layer of s Read More. Wood Shingle Options.

I need a new roof on my storybook. It has a layer of old asphalt shing Corrugated metal siding over T Is it possible to install corrugated metal siding over t siding? Need to replace leaking roof around vent pipe Related Posts Repair roof shingle color match to the old shingles.

I have a roofer coming over to fix the wall flashing and install the kick o Asphalt Shingles over Aluminum Roof??

I have a 12X20 aluminum shed with 2x4 trusses 16 in on center. The shed cu Has anyone installed an aluminum shingled roof lately?

Shingles for what is the hatchet man Shed. I have a 10 x 16 shed, long existing in my yard.

The shingles are how to lay shingles over shingles bad n Popular Articles. Installing Three-Tab Shingles. How to Install 3 Tab Shingles. By Sage C. Building a Garage 10 - Applying Felt and How to Lay Fiberglass Roof Shingles.

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Roofers Experiences

Depending on the type of job, the author uses several specialty drip edge profiles, including one with an extra-long leg designed to cover existing shingles and drip edge (at right in top photo). A single length of drip edge wraps roof corners, with the rake flashing overlapping the eaves for good drainage (bottom). Jan 24,  · Re-roofers have tricks to lay new roof shingles over old so that the same step-ups between courses are maintained, but if any old shingles are cupped, curled, or otherwise misshapen, those defects will "telegraph" through to the new layer. Many roofers recommend using laminated, or dimensional, shingles for re-roofs because they're thicker than. Jul 29,  · Today the question of installing architectural shingles over an older layer of architectural shingles is a bit more complicated and one that doesn’t seem to have % consensus. The answer to the question starts with the drastic difference between an architectural (laminated) shingle and an old school 3-tab shingle.

Is your roof in disrepair? You might be able to lay new shingles over existing shingles and avoid the cost of tear-off. If conditions are right, new shingles laid over old shingles can be just as attractive and durable as shingles laid on bare sheathing.

Installation is easier than for a tear-off job because you can use the existing shingles as guides for laying the new ones. But you must take care to install shingles correctly so they lie flat.

And a good job involves installing new flashings rather than relying on the existing ones. Reroof jobs are sometimes done without replacing flashings. However installing new flashings, including special drip-edge flashings made for reroofing, will ensure a tight seal and a long life.

Some roofers install a layer of waterproof shingle underlayment WSU over the existing shingles at the eave end, as would be done for a roof laid on bare sheathing. This provides added protection against ice dams. Asphalt shingles can be laid over cedar shakes or shingles , however, this is a roofing project best left to pros.

Beveled wood pieces called "horsefeathers" must be laid along the thick edges of the shakes to make a fairly flat surface.

Before you reshingle a roof, read our step-by-step guide for adding new shingles over old ones. Remove the ridge caps. Doing it now will make it easier to keep the reroofing job clean. Use a flat pry bar or roofing shovel to pry out and remove the ridge shingles. Remove all nails. Remove air vents and pipe flashings by prying out or unscrewing the fasteners holding the fixture.

If you damage shingles while doing this, repair the shingles see next step. Reuse a vent or flashing only if it is like new; otherwise, replace it with a new one that will fit the hole or pipe. If a shingle is torn or cracked, glue the broken piece back in place using roofing cement.

If the broken piece is lost, cut a new piece to fit the existing shingle. Using a large broom, brush away all broken shingle pieces, twigs, and any other debris that could become trapped under the new shingles that you install. Keep the roof clean as you work. At the eave and the rake, install U-shape drip-edge flashing made for reroof jobs. Install the eave piece first, then the rake piece over it.

The two pieces should meet neatly at the corners. Drive nails at high points on the underlying roof, the bottoms of the shingles. If you have an open valley, install new W-shape metal or vinyl valley flashing to fit directly over the old flashing.

Attach it by driving nails into the outside edges only. Do not drive nails less than 6 inches from the center of the flashing. Use a starter strip or cut pieces for a starter course. Rip-cut the starter strip or starter pieces so that they butt up against the second course of existing shingles and are even with the front edge of the existing roofing. Attach with nails along the top edge of the strip. Install a course along the snapped line, then install succeeding courses using a guide or a snapped line.

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. Their tab slots should not line up with the tab slots of the starter course, if there are any. Nail the shingles just above the tab slots. Editor's Tip: The thicker the new shingle, the better it will hide any imperfections in the roofing below. It's a good idea to use at least year shingles; architectural shingles are an even better choice.

Butt the succeeding courses of shingles against the bottoms of existing shingles and apply them by driving nails above the tab slots. Snap vertical control lines; there is no need to snap horizontal lines.

Be sure the new tab slots do not align with the old ones. In a reroof job, the starter course or strip is rip-cut so it butts up against the third courseof the existing shingles; its front edge is even with the front edge of the drip edge. The rest of the shingles are full-width. Once you have installed shingles just past a plumbing vent, install the flashing piece so it will lie on top of roofing at its bottom but be covered with roofing at its top.

Depending on the width of the pipe, you may need to tear away a segment or two of the rubber boot. Apply roofing cement, slide the flashing over the pipe, and push so it lies flat on the roof. Install air vents in a similar manner.

For both plumbing-vent flashing and air vents, you'll need to cut the shingle above to go around the flashing and then install the shingle. Where you meet a chimney or side wall, install step flashing. Apply a shingle, then a piece of flashing, then a shingle, and so on, so that each piece of flashing rests on top of the lower course and is covered by the upper course. You'll need to pry the siding outward to slip in the flashing; in some cases, you'll have to remove the siding.

Protect the step flashing with counterflashing. On a chimney, use a grinder to cut an indentation into the mortar. Cut and bend the counterflashing to fit snugly into the cut mortar and to cover at least 3 inches of the step flashing. Apply mortar with a caulking gun and set the flashing into the mortar.

Install roofing on both sides of a ridge and cut them so they butt closely together but do not overlap. Cut shingles into ridgecaps. Snap lines on either side and install the caps. At the rake, snap a line directly above the edge of the existing shingles. Cut with a utility knife; you might want to use a straightedge.

You might find it easier if you first cut from below using the existing shingles as a cutting guide. How to Roof Over Existing Shingles. Save Pin FB ellipsis More. How to do it Part 1 man removing ridge caps. Editor's Tip. Aligning Layover Shingles In a reroof job, the starter course or strip is rip-cut so it butts up against the third courseof the existing shingles; its front edge is even with the front edge of the drip edge.

Credit: Dave Toht. Comments 1 Add Comment. View Comments. How difficult was this project? Very easy. Kind of easy. Kind of hard. Very hard. April 28, Difficulty: Kind of Hard. Any other application, such as over old shingles, will void the WinterGuard warranty.

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