Quick Answer: Should Old Shingles Be Removed?

How long does it take to remove shingles?

It can take as little as ONE day to tear off and replace an asphalt shingle roof.

If it is a clear, hot, summer day, then a roofing crew of 5-6 can tear off and replace a 40 square asphalt shingle roof in a single day (a square is roofing terminology for shingles.

1 square = 100 square feet of shingles)..

How far should flashing go under shingles?

8 to 14 inchesIf this is a repair job, the siding must also be removed and replaced with the flashing. Second, step flashing needs to extend 8 to 14 inches above the shingles, according to the National Roofing Contractors Association (NRCA).

Can you put plywood over old shingles?

The new plywood will have to be nailed to the rafters or roof trusses. … But, with the old plywood left in place, it will be considerably more difficult to locate the rafters to ensure proper nail placement.

Does flashing go over or under shingles?

This is true no matter what type of roof-covering material is installed. Flashing should overlap the roof-covering material, but on asphalt shingle roofs, for aesthetic reasons, the part of the headwall flashing that extends down over asphalt shingles is often covered with a course of shingle tabs.

How much does it cost to reroof a small house?

Average Cost to Replace a Roof by House SizeHouse (& Roof**) by Square FootRe-Roofing Cost*1,100 (1,160)$4,200 – $6,0001,200 (1,265)$4,500 – $6,5001,500 (1,581)$5,500 – $8,0001,600 (1,687)$6,000 – $8,5007 more rows

How long can roofing shingles be stored?

Do Shingles Have A Shelf Life? Theoretically, there is no shelf life on shingle products in the bundle. than one year. Should a shingle be used after one year’s storage, care should be taken while handling as the shingle may have stiffened over time.

Can you replace drip edge without removing shingles?

The drip edge is often replaced when new shingles are installed, but it can be replaced at any time. Asphalt roof shingles can become brittle in cold weather, so wait until a warm (but not hot) day to remove and replace eave stripping.

Should roofer replace flashing?

Flashing Mistakes Flashing should be installed underneath new shingles to prevent water damage. Roofers sometimes poorly install flashing over the shingles instead of underneath, which compromises their water resistance.

How much is a metal roof for a 1500 sq ft house?

It will cost around $9 to $12 per sq. foot installed for a standing seam metal roof. For example, if you have 1,500 square feet, the average cost of installation is $8 per square foot – it will cost you $12,000 to install the metal roof. There are low-end shingles that can be installed on top of the old roof.

Do you peel plastic off back shingles?

NOTE: The film strips on the back of each shingle are to prevent sticking together of the shingles while in the bundle. Their removal is NOT required during application.

Can you reuse shingles with nail holes?

You will generally have to get under the shingle and loosen the nail then go on top and pull it. Take your time and you’ll be able to reuse the shingle.

How much does it cost to replace a full roof?

With these factors in mind, a commercial roof replacement can cost between $15,000 and $60,000 depending on the materials involved. If the chosen materials cost between $50 to $105 per square meter, the replacement would generally cost between $15,000 and $30,000.

Do you need plywood under shingles?

If you want new asphalt shingles installed then solid sheathing must be applied first. This can be exterior grade plywood or oriented strand board (OSB). Be sure that the roofer uses rated sheathing; most is rated by the APA – The Engineered Wood Association base right here in the Puget Sound Region.

Should I remove old shingles when shingling?

You need to tear off the roof and install a new one. Current shingles are curling or in bad shape – The new shingle roof should lay flat on your old one. But if the current roof is curling, this isn’t possible. You’re better off removing the old roof.

Is it OK to put new shingles over old?

The answer is yes, you can lay new roof shingles over old ones. … You can’t do it with wood or slate, for example, and you should never mix materials, such as laying asphalt shingles over cedar shakes. Also, the old roofing has to be in pretty good condition. Otherwise you’re just putting lipstick on a pig.

Can shingles be removed and reused?

Reusing an old shingle could affect your roof’s ability to protect your home from wind, water, and other elements. … These replacement shingles can keep your home safe from storm damage or other damage. It’s best not to reuse old shingles if they are in poor condition.

How hard is it to remove shingles?

Although removing asphalt shingles requires less roofing knowledge and training than the installation of the new layer, it is still a lot of work. Maybe you’re not afraid of hard work, but also remember you’ll be working on a sloped surface, using tools you likely have never used before.

Can you put shingles in a dumpster?

When it comes to roof shingle disposal, one of the simplest ways to get rid of your debris is to rent a roll off dumpster. A dumpster rental accepts all types of roofing materials, shingles and tiles. You can rent the container for the entire length of your project, so there’s no rush to load up your shingles.

What is the average cost to reshingle a roof?

between $4,000 and $10,000The average cost to reshingle a roof is between $4,000 and $10,000 depending on the materials used for reshingling your home. Asphalt and metal reshingling is the most common, while more expensive options are clay and solar.

Is OSB better than plywood for roofing?

When plywood gets wet, it tends to swell. … In this case, plywood has the edge. OSB takes longer than plywood to get saturated, but also takes much longer to dry out. When used as roof sheathing, this tendency to hold moisture means it will degrade faster than plywood when exposed to chronic leaks.