Rubber roofing cannot be applied directly over shingles. … Last, rubber roofing must be provided with a barrier between it and the old roof. It cannot be adhered directly to asphalt.
Can you put a rubber roof over asphalt?
You cannot install an EPDM rubber roof directly over asphalt, tar, shingles or felt paper. … You can install it over existing roofing only if you first place the plywood or OSB decking over the existing roof. Oils in the asphalt and tar roofing will cause problems in the EPDM.
Is rubber roofing more expensive than shingles?
Rubber roofing can go where typical asphalt roofing cannot due to its flexible nature. Rubber shingles can be more expensive than asphalt shingles, but they are cheaper than slate shingles and equivalently fire resistant.
Is it OK to roof over existing 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.
How long do rubber membrane roofs last?
But how durable are rubber roofs, anyway? A well-installed rubber roof is incredibly durable, lasting between 40 and 50 years if properly maintained. Of course, rubber roofs will last much longer if installed with proper drainage in mind.
What do you put under rubber roofing?
You can install EPDM membrane over an existing roof only if a new layer of 5/8″ plywood, 5/8″ OSB board or polyisocyanurate board with a fiberglass backing is used as a barrier to protect the EPDM.
Is rubber roofing any good?
Rubber roofing is suitable for extreme conditions, giving you one of the most durable and reliable roofs available that typically lasts between 30-50 years. In time, you may find a felt flat roof can pick up moss and algae; the synthetic rubber doesn’t support the growth of moss so you are guaranteed a clear roof!
How much does a new rubber roof cost?
Rubber roofing costs anywhere between $8,000 to $14,000 to install depending on the slope, pitch, and size of your roof. You can expect to pay $4.25 to $8.25 per sq. foot or $425 to $8825 per square installed on a standard sized single story home.
Is a rubber roof energy efficient?
Both roofing materials are energy efficient in their own way. Rubber roofs are exceptional when it comes to insulation, so you’ll be saving extra money during the cooler months. On the other hand, metal roofs have the ability to reflect solar radiation instead of absorbing heat.
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.
Should old shingles be removed?
If any areas of the roof have become severely damaged, it’s usually better to remove the old shingles and start from scratch. … If you’re going to add a roof on top of an old one, it’s a good idea to remove any loose shingles and apply a new layer of 30-pound roofing felt before laying the new shingles.
Does a rubber roof need to be coated?
Many building owners are under the impression that they have a rubber roof that needs to be coated periodically. There are some roofing contractors that sell Modified Bitumen membranes as rubber, THEY ARE NOT. True rubber membranes (ie: EPDM, TPO, PVC) do not need to be coated.
Is a rubber roof better than felt?
Rubber roofing like EPDM is considered a far superior product than traditional felt thanks to the wide range of benefits on offer. It’s one of the highest quality materials for flat roofs and is incredibly easy to install. The result is a robust, waterproof and durable roof that won’t tear, rot or blister.
How do you maintain a rubber roof?
How to Maintain a Rubber Roof
- Remove all limbs and debris from the rubber roof. …
- Inspect the rubber roof for old, loose or crumbling roof sealant. …
- Clean the rubber roof using dish-washing detergent and water. …
- Apply rubber roof cleaner to the roof to remove chalking.