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There are actually various roof systems on call in today's market, each with various advantages and weak spots. Below I will define each system briefly, and afterwards provide the pros and cons.

Thermoplastic as well as PVC- Single ply, may be mechanically fastened, completely stuck or ballasted.

Pros- Top-notch performance in ponding water circumstances. Incredibly light-weight roofs, round 30lbs. per one hundred sq. ft. Comes in white colored if a cool roof is actually desired, or even in several various colors for artistic concerns. An additional plus with these roofings is that huge custom made industry pieces could be gotten coming from the manufacturing plant, minimizing seams secured by the team on the jobsite. Insusceptible to ozone, algae as well as industry joints are actually 3-4 opportunities more powerful than EPDM filed seams. There is also a remarkable quantity of versatility in the product. As well as given that joints may be joined along with warm air, there are actually no noxious fumes to handle. Both 15 and 20 year guarantees readily available.

Downsides- Being actually solitary ply, they are actually prone to thrown out cigarettes, sudden things fell on the membrane layer, and also defective glass coming from containers thrown on roof (this takes place a WHOLE LOT) I usually discourage customers from putting in these forms of devices if the roof possesses a considerable amount of feet visitor traffic or is conveniently obtainable to unwarranted staffs. Over the last, component contraction went to opportunities an extreme complication on Thermoplastic as well as PVC roof coverings, however adjustments in arrangement as well as manufacturing has alleviated this issue. These roofing systems still shrink in time, though not to the point of breakdown as over the last.

Profit- Excellent roof coverings, specifically on roof coverings that pond water highly, so long as the roof is typically accessible only to authorized staffs.

Asphalt Tweaked Asphalt- This roof is what a ton of individuals contact a rubber roof, when it remains in truth composed mainly of asphalt. It can be found in 3 ft. vast rolls as well as is actually normally torched down with an open flame, though they may be administered along with warm air welders in specific problems as well.

Pros- In my opinion, the largest toughness of these roof coverings is how well they resist outdoors stress and anxieties. They deal with foot traffic far better than some other membrane layer, as well as are difficult to prick, particularly if they have a granulated surface. These roofs are actually thus difficult as a matter of fact, that most insurer will not even acknowledge hail harm as they perform on other roofs (I have actually individually viewed customized roofs positively pounded with hail and also visit totally undamaged).

Drawbacks- The absolute most glaring disadvantage along with these units is that there is a joint every 3 feet, that makes for a TON OF seams. If you have an attentive staff with a skilled supervisor that will certainly ensure that every joint on the roof is triple checked out, you'll possibly be alright using this body. If not, you may be pretty sure you will end up with leaks fairly soon, well before the warranty expires in my experience. And large ponding areas of water on these systems will degrade the material prematurely.

Bottom line- With a good, experienced crew this can be a good roof on a building that does not pond water excessively. And if you have a building with a lot of rooftop foot traffic, this is probably the only way to go.

Foam roofs- This system is applied with a large spray unit, spraying two liquid components (isocyanate and resin) When the liquids are mixed together, they expand 20-30 times and will adhere to concrete, wood, steel and most existing roof systems, but according to the manufacturers, NOT to modified bitumen.

Pros- When complete, the roof is monolithic with no seams, fully adhered and has insulating properties.

Cons- Full disclosure, I have limited experience with these roofs here in NE Illinois. We don't install them, but I have been on 9-10 buildings with this system, and all of them leaked badly, in a couple of cases within months of being installed. Leaks are very difficult to track down and difficult to fix even when found, as repair materials don't adhere to this surface very well.

Bottom line- Based on my admittedly limited experience with this system, I would not advise my clients to go this route when a new roof is needed.

EPDM Rubber- Rubber roofs can be fully adhered, mechanically fastened or weighed down with ballast (Riverbed gravel or pavers) They are versatile, appropriate for many installations and have a long track record.

Pros- Rubber roofs are relatively inexpensive, easy to install and repair. They are available in large sheets to minimize the number of field seams, and there is quite bit of flexibility in the membrane.

Cons- Field seams on these roofs are not as strong as Thermoplastic roofs. Flashings and roof edges tend to wear out more quickly than the remainder of the roof. Shrinkage over long periods can be dramatic in some applications.

Bottom line- Can be a good investment for a building owner, but all of the circumstances of a given installation must be carefully weighed. And good workmanship on the install is vital.

Spray applied roofing- These are not technically re-roofs, they are considered coatings. Some companies refer to them as "re-plys", as you are essentially adding a ply to the existing roof surface. There are numerous manufacturers offering various products with different compositions and specification, too numerous to go into fully here. If an existing roof is experiencing leaks but has not advanced to the point of outright failure, them may be good candidates for this solution.

Pros- Can be extremely cost effective, especially on roofs that have a lot of projections and rooftop HVAC units. The material is pure white, which in some cases (especially on metal roofs) can dramatically reduce AC cooling costs. As this is considered to be roof repairs rather than a new roof, there are tax advantages as well.

Cons- The existing roof must still be in somewhat decent condition. If applied to a roof that has already failed, your money will basically be wasted. Also, since this www.maggiosroofingatlanta.com material is sprayed on, any cars within 100 ft or so must be moved during the application process, as this material will be extremely difficult if not impossible to remove from a car's finish. Some manufacturers do not warranty this material if there is ANY ponding water on the roof. Can not be applied to a roof with an existing gravel ballast.

Bottom line- This solution may save a building owner a lot of money, if the existing roof is in good enough condition to accept the coating. Excellent solution for metal roofs in particular.

As you can see, there are many different solutions to your flat roofing needs. It is vital however to choose a roofer who will recommend the best system for your particular roof and circumstances, and not the best solution for his wallet. Be sure you understand why a roofer is recommending a particular system for your project, and which system will be the best investment for you.