That said, on average, most contractors will charge between $3.50 and $6.00 per square foot or $350 to $600 per square (100 sq. ft.) to install or replace an asphalt shingle roof on a typical house. On average across the US, it will cost between $7,000 and $13,200 to replace a 2,000-2,200 sq. ft.
Is it OK to put a second layer of shingles on a roof?
“Can I put a second layer of shingles on my roof?” You can, but you probably shouldn’t! Known as a layover, putting a second layer of shingles on your roof is in most cases inadvisable and a job that Proven Roofing is likely to even turn down.
How much does a second layer of shingles cost?
ft. The cost per square depends on the type of shingles and the brand. They generally range between $55 on the low end and $600 on the high end, with an average of $100 to $250 per square of architectural shingles. The roofing labor cost per square is $100 to $250.
How do I add a second layer of shingles to my roof?
Remove shingles from any area where you notice deterioration or damage to the roof decking. Replace the damaged roof deck with 3/4-inch OSB board. Add a layer of shingles over the newly repaired area before you install your second layer of shingles.
Is it better to tear off old shingles?
Why Tear-Offs are Almost Always Necessary
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.
How many times can you shingle over a roof?
Depending on the type of roof material used, the number of layers added to a roof range from two to three times. House roofs should never exceed three layers of shingles. Adding additional layers without excavation can save homeowners up to $1,000 in labor.
How much does it cost to shingle a 1000 sq ft roof?
Average Cost to Replace a Roof by House Size
| House (& Roof**) by Square Foot | Re-Roofing Cost* |
|---|---|
| 1,000 (1,054) | $4,000 – $5,500 |
| 1,100 (1,160) | $4,200 – $6,000 |
| 1,200 (1,265) | $4,500 – $6,500 |
| 1,500 (1,581) | $5,500 – $8,000 |
How much does a roofer charge per day?
Roofer Day Rate
Professional roofers tend to charge around £200 per day to construct or repair a new roof. Day rates may differ depending on the extent of the job, for example, a flat roof may only cost you £150 a day in labour, while a large pitched roof can cost up to £250.
What is the problem with more than two layers of shingles?
Warranty issues: Most shingle warranties do not apply when shingles are layered over existing roofing, according to InterNACHI. Two layers of shingles trap more heat, which in turn damages the shingles and shortens the life span of the roof.
How long does a 2 layer roof last?
Roofs. Slate, copper and tile roofs can last more than 50 years. Homeowners with wood shake roofs should expect them to last about 30 years, while fiber cement shingles last about 25 years and asphalt shingle/composition roofs last about 20 years, the NAHB found.