There are several roof systems readily available in today's market, each with different staminas and weak points. Listed below I will describe each system briefly, and afterwards provide the advantages and disadvantages.
Thermoplastic and PVC- Single ply, can be mechanically attached, completely ballasted or adhered.
Pros- Superior performance in ponding water situations. Extremely lightweight roofs, in the area of 30lbs. each 100 sq. ft. Comes in white if an amazing roof is desired, or in several various colors for visual concerns. Another plus with these roofing systems is that big customizeded field sheets could be purchased from the factory, minimizing joints secured by the crew on the jobsite. Resistant to ozone, algae and area joints are 3-4 times stronger than EPDM submitted joints. There is additionally a significant quantity of flexibility in the material. And since joints could be welded with hot air, there are no poisonous fumes to take care of. Both 15 and 20 year warranties available.
Disadvantages- Being solitary ply, they are vulnerable to disposed of cigarettes, sharp things dropped on the membrane, and busted glass from containers thrown on roof (this happens a LOT) I normally prevent clients from installing these sorts of systems if the roof has a lot of foot traffic or is easily obtainable to unapproved personnel. In the past, material contraction went to times a severe trouble on Thermoplastic and PVC roofing systems, but adjustments in composition and production has ameliorated this issue. These roofing systems still diminish with time, though not to the point of failing as in the past.
Bottom line- Great roof coverings, especially on roof coverings that pond water heavily, as long as the roof is normally obtainable just to licensed personnel.
Asphalt Modified Bitumen- This roof is just what a lot of people call a rubber roof, when it remains in fact composed generally of asphalt. It comes in 3 ft. large rolls and is generally torched down with an open flame, though they can be applied with warm air welders in particular problems.
Pros- In my opinion, the greatest toughness of these roofs is how well they withstand outdoors stress and anxieties. They handle foot traffic better compared to other membrane, and are difficult to pierce, specifically if they have a granulated surface area. These roofs are so tough in fact, that a lot of insurer will not also identify hailstorm damages as they do on various other roof coverings (I have actually directly seen modified roof coverings definitely mauled with hail storm and come out completely intact).
Cons- The most glaring disadvantage with these systems is that there is a joint every 3 feet, that makes for a LOT of seams. If you have an attentive staff with a competent foreman that will certainly ensure that every seam on the roof is three-way examined, you'll possibly be great with this system. Otherwise, you can be quite sure you will certainly end up with leaks fairly soon, well prior to the guarantee ends in my experience. And large ponding locations of water on these systems will certainly degrade the product prematurely.
Profits- With an excellent, skilled staff this could be an excellent roof on a building that does not pond water excessively. And if you have a structure with a lot of roof foot traffic, this is possibly the only way to go.
Foam roofings- This system is used with a huge spray device, splashing two liquid elements (isocyanate and resin) When the fluids are blended with each other, they increase 20-30 times and will certainly follow concrete, wood, steel and most current roof systems, however according to the makers, NOT to customized bitumen.
Pros- When total, the roof is monolithic without any joints, totally stuck and has insulating buildings.
Disadvantages- Full disclosure, I have limited experience with these roofings right here in NE Illinois. We don't mount them, yet I have been on 9-10 buildings with this system, and all of them leaked terribly, in a few situations within months of being set up. Leakages are extremely challenging to track down and difficult to deal with also when found, as fixing materials don't comply with this surface area quite possibly.
Bottom line- Based on my unquestionably limited experience with this system, I would not suggest my customers to go this route when a brand-new roof is required.
EPDM Rubber- Rubber roofs can be totally adhered, mechanically fastened or considered down with ballast (Riverbed crushed rock or pavers) They are flexible, appropriate for lots of installations and have a lengthy track record.
Pros- Rubber roofs are reasonably inexpensive, very easy to install and repair. They are offered in huge sheets to minimize the number of area joints, and there here is quite little bit of adaptability in the membrane layer.
Cons- Field seams on these roof coverings are not as strong as Thermoplastic roofs. Flashings and roof edges have the tendency to break more quickly than the remainder of the roof. Shrinking over extended periods could be significant in some applications.
Profits- Can be a good investment for a building owner, however all the scenarios of a provided installation needs to be meticulously weighed. And good workmanship on the mount is vital.
Spray applied roofing- These are not technically re-roofs, they are considered coverings. Some companies refer to them as "re-plys", as you are basically including a ply to the existing roof surface area. There countless manufacturers offering numerous products with different compositions and requirements, as well various to go into totally below. If an existing roof is experiencing leakages however has not progressed to the point of outright failing, them may excel candidates for this solution.
Pros- Can be very affordable, especially on roofs that have a lot of estimates and rooftop HVAC devices. The material is pure white, which sometimes (specifically on metal roofing systems) could drastically reduce A/C air conditioning costs. As this is thought about to be roof fixings rather than a new roof, there are tax advantages.
Cons- The existing roof needs to still remain in rather suitable problem. Your cash will generally be thrown away if used to a roof that has actually currently stopped working. Also, given that this product is splashed on, any kind of cars within 100 feet approximately need to be relocated during the application process, as this product will be incredibly challenging if not difficult to get rid of from a car's coating. Some suppliers do not guarantee this material if there is ANY ponding water on the roof. Can not be applied to a roof with an existing crushed rock ballast.
Bottom line- This service could save a structure owner a great deal of cash, if the existing roof remains in good enough problem to accept the finishing. Excellent option for steel roofings particularly.
As you could see, there are many different options to your level roofing requirements. It is essential nevertheless to pick a roofer that will suggest the most effective system for your particular roof and scenarios, and not the most effective service for his purse. Make certain you understand why a roofer is suggesting a specific system for your task, and which system will certainly be the best investment for you.
Cons- Being single ply, they are vulnerable to discarded cigarettes, sharp items dropped on the membrane layer, and busted glass from containers tossed on roof (this takes place a LOT) I usually discourage customers from installing these types of systems if the roof has a lot of foot traffic or is easily accessible to unapproved employees. These roofings are so hard in fact, that most insurance firms will not even acknowledge hailstorm damages as they do on various other roofing systems (I have directly seen changed roofings absolutely mauled with hail and come out entirely undamaged).
Disadvantages- Field joints on these roofing systems are not as strong as Thermoplastic roof coverings. Flashings and roof edges tend to put on out a lot more rapidly compared to the remainder of the roof. As this is considered to be roof fixings rather compared to a new roof, there are tax obligation advantages.