Pros and Cons of Various Roof Systems
There are many different roofing system systems readily available in today’s market, each with different strengths and weak points. Below I will certainly describe each system briefly, and afterwards note the benefits and drawbacks, thinking about getting a new roof?
Thermoplastic as well as PVC- Solitary ply, can be mechanically connected, fully stuck or ballasted.
Pros- Superior performance in ponding water situations. Extremely lightweight roof coverings, in the area of 30lbs. each 100 sq. ft. Is available in white if a great roofing is preferred, or in numerous various shades for visual issues. An additional plus with these roof coverings is that big customizeded area sheets could be bought from the factory, reducing seams secured by the staff on the jobsite. Immune to ozone, algae and also area seams are 3-4 times more powerful than EPDM filed joints. There is additionally a tremendous amount of versatility in the product. As well as considering that joints can be welded with warm air, there are no toxic fumes to deal with. Both 15 and Two Decade guarantees readily available.
Cons- Being solitary ply, they are susceptible to disposed of cigarettes, sharp objects dropped on the membrane, and busted glass from bottles tossed on roofing (this happens a GREAT DEAL) I normally discourage consumers from installing these sorts of systems if the roof has a great deal of foot web traffic or is quickly obtainable to unauthorized personnel. In the past, product shrinking went to times a serious issue on Thermoplastic as well as PVC roofs, yet adjustments in structure and production has relieved this concern. These roofing systems still diminish over time, though not to the factor of failure as in the past.
Bottom line- Terrific roofs, especially on roof coverings that pond water greatly, as long as the roofing system is generally available just to licensed personnel.
Asphalt Revised Bitumen- This roof covering is what a great deal of individuals call a rubber roof covering, when it remains in fact made up primarily of asphalt. It is available in 3 ft. vast rolls and is generally torched down with an open flame, though they could be applied with hot air welders in certain problems also.
Pros- In my point of view, the most significant toughness of these roofings is how well they withstand outdoors stresses. They manage foot web traffic far better compared to any other membrane, and are difficult to penetrate, particularly if they have a granulated surface. These roofing systems are so tough as a matter of fact, that many insurance companies will not even identify hailstorm damage as they do on other roofings (I have actually personally seen customized roofings definitely pummeled with hailstorm and also appear entirely intact).
Disadvantages- The most glaring negative aspect with these systems is that there is a seam every 3 feet, which makes for a Great Deal Of seams. If you have a persistent crew with a qualified foreman who will certainly guarantee that every joint on the roof is triple checked, you’ll probably be great with this system. Otherwise, you could be very sure you will certainly wind up with leaks relatively quickly, well before the warranty expires in my experience. As well as large ponding areas of water on these systems will deteriorate the product too soon.
Profits- With a good, experienced crew this can be a good roofing on a structure that does not pond water excessively. And also if you have a building with a lot of roof foot website traffic, this is possibly the only method to go.
Foam roofings- This system is used with a huge spray unit, splashing two fluid elements (isocyanate as well as material) When the fluids are blended with each other, they increase 20-30 times as well as will certainly adhere to concrete, timber, steel and also most current roof covering systems, however according to the suppliers, NOT to customized bitumen.
Pros- When complete, the roofing system is monolithic without joints, totally stuck as well as has shielding buildings.
Cons- Complete disclosure, I have restricted experience with these roofing systems below in NE Illinois. We don’t install them, yet I have gotten on 9-10 buildings with this system, as well as all of them leaked badly, in a number of situations within months of being mounted. Leakages are extremely difficult to track down as well as challenging to deal with even when found, as repair service products do not follow this surface area effectively.
Profits- Based upon my admittedly restricted experience with this system, I would not encourage my clients to go this route when a brand-new roof covering is required.
EPDM Rubber- Rubber roofing systems can be completely stuck, mechanically attached or weighed down with ballast (Riverbed gravel or pavers) They are functional, suitable for several installations as well as have a long track record.
Pros- Rubber roof coverings are relatively cost-effective, easy to install as well as fix. They are readily available in huge sheets to lessen the variety of field joints, and also there is fairly little adaptability in the membrane.
Disadvantages- Field joints on these roofings are not as solid as Thermoplastic roofing systems. Flashings as well as roof covering edges have the tendency to wear out faster compared to the remainder of the roofing. Contraction over extended periods could be remarkable in some applications.
Profits- Can be a good investment for a building owner, yet all of the situations of an offered installment should be very carefully weighed. As well as good craftsmanship on the set up is essential.
Spray applied roof covering- These are not technically re-roofs, they are taken into consideration coverings. Some companies describe them as “re-plys”, as you are basically adding a ply to the existing roofing system surface area. There many suppliers offering different products with different make-ups and spec, too countless to go into totally right here. If an existing roof is experiencing leaks yet has actually not progressed to the factor of outright failing, them may excel prospects for this service.
Pros- Could be very affordable, particularly on roofing systems that have a great deal of projections as well as rooftop HEATING AND COOLING devices. The material is pure white, which sometimes (especially on metal roofs) can substantially minimize A/C cooling costs. As this is considered to be roof covering fixings instead of a new roof covering, there are tax advantages as well.
Disadvantages- The existing roofing system has to still remain in rather suitable condition. If put on a roofing that has actually currently fallen short, your money will essentially be lost. Since this material is sprayed on, any type of cars within 100 feet or so need to be moved during the application process, as this material will be exceptionally difficult if not impossible to eliminate from an automobile’s coating. Some makers do not warranty this material if there is ANY ponding water on the roofing. Can not be related to a roof covering with an existing gravel ballast.
Profits- This remedy may save a structure owner a great deal of cash, if the existing roofing system is in good enough problem to approve the covering. Exceptional remedy for metal roof coverings in particular.
As you could see, there are various remedies to your flat roofing needs. It is crucial nevertheless to select a roofing contractor who will certainly advise the very best system for your certain roofing system as well as circumstances, and also not the most effective service for his purse. Be sure you recognize why a roofer is suggesting a certain system for your project, as well as which system will certainly be the best investment for you.