Pros and Cons of Different Roofing Systems

There are several roofing system systems readily available in today’s market, each with various strengths and weaknesses. Below I will explain each system briefly, and after that detail the benefits and drawbacks.

Thermoplastic as well as PVC

Single ply, can be mechanically attached, fully ballasted or adhered.

Pros- Superior efficiency in ponding water circumstances. Really light-weight roofings, in the community of 30lbs. per 100 sq. ft. Is available in white if a great roofing system is wanted, or in a number of various colors for visual problems. One more plus with these roof coverings is that large personalized made area sheets can be gotten from the manufacturing facility, reducing seams sealed by the staff on the jobsite. Resistant to algae, area and ozone joints are 3-4 times more powerful than EPDM filed joints. There is likewise a significant amount of flexibility in the material. And since joints can be bonded with hot air, there are no noxious fumes to manage. Both 15 and 20 year warranties offered.

Cons- Being solitary ply, they are at risk to discarded cigarettes, sharp things went down on the membrane layer, and also busted glass from containers tossed on roof (this happens a WHOLE LOT) I normally discourage customers from installing these types of systems if the roof has a great deal of foot traffic or is quickly obtainable to unapproved employees. In the past, material shrinkage was at times an extreme problem on Thermoplastic and also PVC roofing systems, but changes in composition and also production has actually relieved this problem. These roofings still reduce gradually, though not to the factor of failure as in the past.

Profits- Terrific roofings, specifically on roofings that pond water heavily, as long as the roof is generally accessible only to authorized workers.

Asphalt Revised Bitumen

This roofing system is what a great deal of people call a rubber roof covering, when it remains in fact composed generally of asphalt. It can be found in 3 ft. wide rolls and is typically torched down with an open fire, though they can be applied with hot air welders in certain conditions too.

Pros- In my point of view, the largest stamina of these roofs is how well they stand up to outside stresses. They take care of foot web traffic much better than any type of other membrane, and also are tough to puncture, specifically if they have a granulated surface area. These roofing systems are so tough actually, that most insurer will not also identify hail storm damage as they do on other roofs (I have actually personally seen customized roof coverings absolutely mauled with hail as well as appear entirely intact).

Disadvantages- The most glaring disadvantage with these systems is that there is a seam every three feet, which makes for a WHOLE LOT of seams. If you have a thorough staff with a qualified supervisor who will make certain that every joint on the roof covering is three-way inspected, you’ll possibly be great with this system.

Bottom line- With a good, knowledgeable staff this can be a great roof covering on a structure that does not pond water exceedingly. As well as if you have a structure with a great deal of roof foot web traffic, this is probably the only means to go.

Foam roofing systems

This system is used with a big spray system, spraying 2 fluid elements (isocyanate as well as resin) When the liquids are mixed with each other, they increase 20-30 times and will certainly comply with concrete, timber, steel and most present roof systems, but according to the makers, NOT to modified asphalt.

Pros- When complete, the roof covering is monolithic with no joints, fully adhered and has protecting residential properties.

Disadvantages- Complete disclosure, I have limited experience with these roofs below in NE Illinois. We do not mount them, but I have actually gotten on 9-10 buildings with this system, as well as all of them dripped severely, in a number of situations within months of being installed. Leakages are very difficult to find as well as difficult to take care of even when found, as repair service products do not stick to this surface effectively.

Profits- Based on my unquestionably minimal experience with this system, I would certainly not recommend my customers to go this path when a brand-new roofing system is required.

EPDM Rubber

Rubber roofings can be fully stuck, mechanically evaluated or fastened down with ballast (Riverbed crushed rock or pavers) They are functional, proper for lots of installments and also have a long performance history.

Pros- Rubber roofings are reasonably low-cost, easy to mount and fix. They are offered in big sheets to lessen the variety of area joints, and there is fairly little bit of adaptability in the membrane.

Milford, CT, November 8, 2012-Temporary roofing is in place following Hurricane Sandy and then the area was hit hard a second time when a Nor’easter dropped a foot of snow in Milford. FEMA is in Milford and has opened a Disaster Recovery Center to assist survivors in applying for help. Photo by Marilee Caliendo/FEMA

Disadvantages- Area joints on these roofings are not as strong as Thermoplastic roof coverings. Flashings as well as roofing edges often tend to wear more quickly than the remainder of the roof. Shrinkage over long periods can be significant in some applications.

Bottom line- Can be a great investment for a structure proprietor, yet all of the conditions of an offered setup needs to be carefully weighed. And also good handiwork on the mount is crucial.


Some firms refer to them as “re-plys”, as you are essentially adding a ply to the existing roof surface area. If an existing roofing system is experiencing leaks yet has actually not progressed to the point of straight-out failing, them might be great candidates for this solution.

Pros- Can be exceptionally cost effective, particularly on roofing systems that have a great deal of forecasts and also roof HEATING AND COOLING devices. The product is pure white, which in some cases (especially on steel roofing systems) can significantly minimize Air Conditioning air conditioning costs. As this is considered to be roof covering repair services rather than a new roof covering, there are tax obligation advantages.

Cons- The existing roof covering needs to still be in somewhat respectable condition. Some makers do not guarantee this material if there is ANY ponding water on the roof.

Bottom line- This service may save a structure owner a great deal of money, if the existing roof covering is in adequate condition to accept the finishing. Exceptional solution for metal roof coverings particularly.

As you can see, there are several solutions to your level roofing requirements. It is vital nonetheless to choose a roofing professional that will suggest the best system for your specific roof covering and circumstances, and not the most effective service for his wallet. Be sure you understand why a roofing professional is recommending a certain system for your project, as well as which system will certainly be the best investment for you.

Leave a Reply

Your email address will not be published. Required fields are marked *