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. … But you must take care to install shingles correctly so they lie flat.

Is it OK to put shingles on top of old shingles?

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.

Can you put a second layer of shingles over architectural shingles?

The standard practice was that you could install a new layer of singles directly over the old layer during a re-roof. … The quick answer is yes you can re-roof architectural shingles over existing architectural shingles (however you must check with the shingle manufacturer as well).

Can you put more than one layer of shingles on a roof?

House roofs should never exceed three layers of shingles. Adding additional layers without excavation can save homeowners up to $1,000 in labor. Therefore, layering has advantages. Building and city codes require roofers to limit shingle layers to two.

How long does a reroof last?

The 26 gauge and 29 gauge cheaper metal roofing options can last for up to 25 years if taken care of. On the high-end, the 24 gauge metal roofing option can last for up to 50 years. However, most manufacturers offer a 20-year warranty and some even a lifetime warranty which is dependent on the metal used.

How long should nails be for 2 layers of shingles?

Layers. If you are putting a layer of asphalt shingles over an existing layer of asphalt shingles on to a 3/4-inch deck or a plank deck then you should be using 1 1/2-inch nails. If your decking is less than 3/4 inch then a 1 1/2-inch nail will suffice.

Can you put ice and water shield over existing shingles?

No, you can’t apply it on top of the old shingles. You must apply this product as indicated by the manufacturer. Typically you’ll discover that you must apply the material directly to the wood roof sheathing that’s under the shingles and any old felt paper.

How much does it cost to reshingle a roof?

The 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.

Can dimensional shingles go over 3 tab?

In most cases, you can apply a second layer of three-tab shingles over an existing roof that features three-tab shingles without having to tear off the existing roof. However, you cannot apply three-tab shingles over architectural shingles.

How much does it cost to replace a roof on a 2500 square foot house?

A new asphalt roof for a typical 2,500 square foot single-story ranch house can range in price from $9,000-$20,000 installed. When looking at higher end materials (e.g. tile, slate, wood, or steel), average figures can jump up to between $9.00 to $15.00 per square foot.

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What type of roofing is best?

  • Asphalt Roll.
  • Built-Up Roofing (BUR)
  • Composite Asphalt Shingle.
  • Wood Shingle.
  • Wood Shake Shingle.
  • Standing-Seam Metal.
  • Clay or Cement.
  • Slate.

Where does ice Guard go on roof?

Where Should Ice and Water Protector be Applied? Most commonly, roofing professionals install ice and water protector on eaves, rake edges, overhangs and valleys, as they are most vulnerable to ice dams and wind-driven rain. As well, this may be a building code requirement in some jurisdictions.

Does tar paper go over ice and water shield?

Method 1: Install the ice-barrier membrane according to the manufacturer’s instructions with the drip edge installed on top of the membrane. Then install regular roofing underlayment (tar paper) over the top of the drip edge (and over the ice barrier) and continuing all the way up the roof.

How long does ice and water Shield last?

The original, fully-adhered roofing underlayment, Grace Ice & Water Shield®, now has an extended exposure limit of 90 days. For more than 35 years, Grace Ice & Water Shield® has been the brand that roofing contractors and architects trust most to specify and install on marquee projects around the world.

Why is there a plastic strip on the back of 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.

What layers go on a roof?

  • Insulation. …
  • Ventilation. …
  • Roof Deck. …
  • Underlayment. …
  • Ice and Water Shield. …
  • Ridge Vents. …
  • Roofing Material. …
  • Flashing.

Why do roofers use nails instead of screws?

Nails are often preferred for structural joining, including framing walls, because they are more flexible under pressure, whereas screws can snap. Nails are also called upon when securing plywood sheathing for exterior walls, installing hardwood floors, and attaching siding and roofing.

What does a bundle of shingles weigh?

A single square can weigh between 150-240 pounds, with a single bundle being between 50-80 pounds.

Are architectural shingles easier to install?

Since an architectural shingle roof is easier to install, is more durable and comes with a better warranty, its lifespan cost is, in many instances, actually less than that of a more basic 3-tab roof.

What is the price difference between 3-tab shingles and architectural?

When it comes to cost, architectural shingles typically runs $35 to $45 per bundle. Three-tab shingles cost an average of $25 to $30 per bundle. On the surface, the architectural shingles are 40 to 50 percent more expensive.

How much does it cost to replace a roof on a 1 200 square foot house?

To begin, depending on where you live, replacing the roof on a 2,000 square foot home costs between $6,198 and $13,594. Of course, this includes fully installing asphalt shingles on your house as well. This estimate is especially useful for those of you who are looking to buy a new shingle roof.

How much does it cost to reroof a 1000 sq ft house?

Roof Size and Pitch A new roof on a 1,000-square-foot house costs an average of $4,000 to $5,500 while the cost to replace a 3,000-square-foot home’s roof can rise to an average of $11,200 to $16,000.

Can a roof be Reshingled?

There are two methods commonly used when reshingling a roof. … The second method is to rip off the old shingles and roofing paper and install new roofing paper and shingles on the bare wood sheathing; this is called a rip off job.

What is the cheapest way to replace a roof?

While asphalt is the cheapest roofing material, there are 3 different types of asphalt shingles that vary in price and affect how much you’ll spend on your roof replacement. 3-tab shingles are the cheapest of the 3 types of asphalt shingles and are a great option for a tight budget.

Are 50 year shingles worth the money?

It’s one of the most common questions people ask when it’s time to replace their roof: Are 50-year shingles worth the money? … In most cases, 50-year shingles won’t improve on resale value of a home over 25- or 30-year shingles.

How many bundle of shingles do I need?

Asphalt shingles and most other roof shingles are typically available in bundles. For each roofing square or 100 sq ft, you’ll need three bundles of shingles. The average size of a roof is 30 squares, which typically requires 90 bundles of three-tab shingles or any other starter strips.

What shingles last the longest?

Asphalt Shingles: typically, asphalt shingles last about 20 years; however, higher-quality asphalt shingles are warrantied for up to 50 years. Expect to pay more for a premium, long-life product. Architectural Asphalt: these products last about 30 years on average.

How many years does a shingle roof last?

Dimensional shingles come with a 30-year manufacturer warranty. Vented properly and installed correctly, you should get around 80-85% of the life span out of an asphalt roof. That means you can expect to get about 20-22 years out of your 3-tab shingle roof and 25-28 years out of your dimensional shingles.

How many sq ft are in a bundle of shingles?

You usually purchase shingles by the bundle. Standard shingles are 12 by 36 inches and come 29 to a package. Most shingles come 3 bundles to a square — which is equal to 100 square feet. So, each bundle provides about 33 square feet of coverage.

What does ice and water shield do?

Ice and water shield is a waterproof membrane used to protect your roof from ice and water damage. Its main purpose is to protect your roof decking if water gets underneath your roofing material (asphalt shingles, metal roof, etc.).

Should I ice and water shield my whole roof?

Should you get ice and water shield installed? You can (and should, in my opinion) insist on installing ice & water shielding throughout your entire roof, especially if you know your home is prone to ice dam leaks. Just be prepared for push-back from your roofer.