There are several roof systems offered in today's market, each with various strengths and weak points. Below I will define each system briefly, then note the pros and cons.
Thermoplastic and PVC- Single ply, can be mechanically affixed, completely stuck or ballasted.
Pros- Superior performance in ponding water circumstances. Very lightweight roofs, in the area of 30lbs. per 100 sq. ft. Comes in white if a cool roof is preferred, or in numerous different shades for visual issues. An additional plus with these roofing systems is that huge custom made field sheets could be ordered from the factory, decreasing seams sealed by the team on the jobsite. Immune to ozone, field and algae seams are 3-4 times stronger than EPDM submitted joints. There is also an incredible quantity of adaptability in the material. And because seams can be welded with warm air, there are no toxic fumes to deal with. Both 15 and 20 year warranties offered.
Disadvantages- Being solitary ply, they are prone to disposed of cigarettes, sharp objects dropped on the membrane layer, and busted glass from containers thrown on roof (this happens a LOT) I generally inhibit consumers from setting up these types of systems if the roof has a great deal of foot web traffic or is quickly accessible to unapproved personnel. In the past, product shrinking was at times an extreme issue on Thermoplastic and PVC roofing systems, but changes in composition and production has relieved this problem. These roofs still reduce in time, though not to the factor of failure as in the past.
Profits- Great roofing systems, especially on roof coverings that pond water heavily, as long as the roof is usually obtainable only to accredited 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 is available in 3 ft. vast rolls and is typically torched with an open fire, though they can be applied with warm air welders in particular conditions also.
Pros- In my point of view, the biggest stamina of these roofings is just how well they take on outdoors tensions. They manage foot website traffic far better compared to other membrane layer, and are hard to penetrate, specifically if they have a granulated surface area. These roof coverings are so tough in fact, that many insurance companies won't also identify hailstorm damage as they do on other roofs (I have actually directly seen customized roofings absolutely pummeled with hail and appear entirely undamaged).
Cons- The most glaring disadvantage with these systems is that there is a joint every three feet, which makes for a LOT of joints. If you have an attentive team with a skilled supervisor that will ensure that every joint on the roof is three-way checked, you'll possibly be fine with this system. Otherwise, you can be pretty sure you will certainly end up with leaks relatively quickly, well before the service warranty expires in my experience. And big ponding locations of water on these systems will weaken the material prematurely.
Profits- With a good, skilled team this could be an excellent roof on a structure that does not pond water exceedingly. And if you have a building with a lot of rooftop foot traffic, this is most likely the only method to go.
Foam roofings- This system is used with a big spray device, splashing 2 fluid parts (isocyanate and resin) When the fluids are blended with each other, they increase 20-30 times and will certainly adhere to concrete, timber, steel and most present roof systems, but according to the manufacturers, NOT to customized asphalt.
Pros- When full, the roof is monolithic without seams, completely adhered and has insulating properties.
Disadvantages- Full disclosure, I have actually limited experience with these roofing systems here in NE Illinois. We don't mount them, but I have gotten on 9-10 buildings with this system, and all of them leaked badly, in a few instances within months of being mounted. Leaks are really hard to find and hard to repair even when found, as repair service materials do not abide by this surface extremely well.
Profits- Based on my unquestionably minimal experience with this system, I would certainly not advise my clients to go this route when a brand-new roof is required.
EPDM Rubber- Rubber roofing systems could be totally stuck, mechanically secured or evaluated down with ballast (Riverbed crushed rock or pavers) They are functional, suitable for many installments and have a long track record.
Pros- Rubber roofs are relatively economical, simple to install and fix. They are available in huge sheets to decrease the number of area seams, and there is fairly little bit of flexibility in the membrane layer.
Disadvantages- Field seams on these roofing systems are not as solid as Thermoplastic roofings. Flashings and roof sides have the tendency to break more quickly compared to the remainder of the roof. Shrinking over long periods could be remarkable in some applications.
Profits- Can be an excellent financial investment for a building owner, but all the conditions of an offered setup needs to be meticulously considered. And excellent craftsmanship on the set up is vital.
Spray applied roofing- These are not technically re-roofs, they are thought about layers. Some business refer to them as "re-plys", as you are basically adding a ply to the existing roof surface area. There countless makers providing various items with different make-ups and requirements, also various to go into fully here. Them could be good prospects for this option if an existing roof is experiencing leakages however has actually not progressed to the factor of straight-out failing.
Pros- Can be exceptionally cost effective, specifically on roofing systems that have a great deal of projections and rooftop HVAC devices. The product is pure white, which in some cases (particularly Sky Ways Roofingâ€™s landing page on steel roofing systems) could significantly minimize AC cooling expenses. As this is taken into consideration to be roof repairs instead of a brand-new roof, there are tax obligation benefits too.
Disadvantages- The existing roof needs to still remain in rather suitable problem. Your money will essentially be squandered if applied to a roof that has currently fallen short. Given that this material is sprayed on, any kind of cars within 100 feet or so should be moved throughout the application process, as this product will certainly be exceptionally tough if not impossible to remove from a car's surface. Some producers do not service warranty this product if there is ANY ponding water on the roof. Can not be related to a roof with an existing crushed rock ballast.
Bottom line- This option may conserve a structure owner a lot of cash, if the existing roof is in sufficient condition to accept the coating. Exceptional solution for metal roofings in particular.
As you can see, there are several services to your level roofing needs. It is important nonetheless to choose a roofer that will certainly recommend the very best system for your certain roof and situations, and not the very best remedy for his wallet. Be sure you comprehend why a roofer is recommending a specific system for your job, and which system will certainly be the most effective financial investment for you.
Cons- Being solitary ply, they are vulnerable to discarded cigarettes, sharp objects dropped on the membrane layer, and busted glass from containers thrown on roof (this happens a LOT) I generally 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 roof coverings are so challenging in reality, that a lot of insurance coverage firms will not even identify hail storm damages as they do on other roofs (I have actually directly seen customized roofing systems definitely pounded with hailstorm and come out completely intact).
Cons- Field joints on these roof coverings are not as strong as Thermoplastic roofs. Flashings and roof sides tend to put on out a lot more rapidly than the rest of the roof. As this is thought about to be roof repairs rather compared to a new roof, there are tax obligation advantages.