Can you put shingles over shingles?

It's possible to shingle over shingles, to lay new shingles over existing ones and avoid the cost of a tear-off. If conditions are right, new shingles laid over old ones can be just as attractive and durable as shingles laid on bare sheathing.

Is it OK to put shingles on top of shingles?

The Basic Rules

Know this: placing old shingles over top of the new ones is only possible with asphalt shingles, which are also known as composition shingles. You cannot place a new layer over top of slate or wood, and you should definitely never mix materials like laying asphalt shingles over cedar shakes.

Is it OK to put a second layer of shingles on a roof?

A second layer of shingles will decrease the integrity of your new roof and lower its lifespan. That's because shingles aren't designed to have a second layer of shingles on top of them! Plus, all that extra moisture and heat being applied to the first layer of shingles will make that first layer age faster.

Should you remove old shingles before installing new shingles?

Whether repairing one section of roof, or a replacing a whole one, it's always best to pull up the old shingles before putting down the new ones.

How many layers of shingles can you put 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.

Second layer Roofing EASY.

Is it OK to roof over an existing roof?

Installing a new roof over an existing one can only be done if you have shingles because you can only put shingles over shingles. It is not possible to mix materials, nor to install a new layer over slate or wood tiles.

How long does a roof overlay last?

An overlay is a viable option if the existing roofing materials have not already been overlaid. Home Reference.net notes that on average you can expect the overlay to last for fifteen or sixteen years.

How do you blend old shingles on new roof?

The easiest way to tie in the new shingles with the old is with a cut valley (see Four Ways to Shingle a Valley). After the addition roof is framed and sheathed, snap a line on the existing roof shingles 2 in. up from the valley center, and cut through the shingles and underlayment.

How hard is it to match shingles?

In some cases, especially with an older roof, matching shingles can be close to impossible. An uneven patch job can decrease resale value and start a negative cycle of repair and replacement with a hodgepodge of shingles of different ages.

Can you put architectural shingles over 3 tab shingles?

If you've already got 3-tab shingles, you might be able to overlay with architectural ones while leaving them in place. This will cost less, as you won't have to tear off and start again.

Can I remove shingles myself?

Tear-Off Shingles Along the Edge Using Roofing Tear Off Tools. After stripping the shingles down to the roof jacks, remove the jacks. Work the remaining courses loose with a fork or tear off shovel, but don't pry them completely free or they'll slide off the roof. Loosen the shingles all along the eaves.

What is the best tool to remove shingles?

If you want to remove old asphalt shingles yourself, you can try using a standard square-edged shovel to tear them off; but the best device is a modified shovel-type tool, specifically designed for this purpose.

Should you remove the plastic strip on shingles?

Because the cellophane strips have no effect on the performance of asphalt shingles, it's fine to leave them in place as you install the shingles. In fact, the effort to remove them is unnecessary and just adds an extra step for the contractor.

Is a roof overlay a good idea?

An overlay roof isn't the best choice, and it's certainly not the right option for everyone, but there are some situations where it might make sense. For example, if your existing roof is in great condition, there's no structural damage, and you don't have any leaks, you might be a candidate for an overlay roof.

Is it better to remove old roof?

The main advantage of leaving the old roof on is obvious—you can minimize the mess, removal costs, and disposal expense if you can leave the old shingles in place. Other advantages are that you end up with an extra barrier against leakage and a little extra insulation.

Should you tear-off old roof?

In most cases, more than two layers of roofing shingles does require a tear-off. Laying new shingles over old shingles is easily prone to leaks and reduces the life of the new shingles. This alone ought to be reason enough to do a tear-off; it's just a bad value not to.

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

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). Having said that it will be nearly impossible to get a good looking quality installation.

What is a combination roof?

A combination roof is, quite literally, a combination of types of roofs. Often incorporating two or more designs for aesthetics and practical reasons, combination roofs can feature a range of styles; a clerestory and hip roof, for example. This is a great option for a unique, interesting look.

Can a roof have 2 different pitches?

According to MyRooff, a dual-pitch roof is a gable roof with two sloping sides that meet together at the top, forming a central ridge. Each side extends far enough to cover an entire structure. The ridge is the highest point on a roof, and you'll hear professionals occasionally refer to it as a peak.

How do you connect two roofs with different pitches?

Position the flashing between the two roof pitches. Slide the right edge of the flashing under the highest roof pitch. Place the 2-by-4-inch piece of lumber along the center of the flashing. Gently bend the flashing using the edge of the lumber until both sides of the flashing match the slope of the two roof pitches.

What is better 3-tab or architectural shingles?

Architectural shingles use a stronger and better quality material, so they typically last longer than 3-tab shingles. While a regular 3-tab shingle can last anywhere from 10 to 25 years, a properly maintained architectural shingle can last upwards of 50 years.

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.