If you are planning of installing a flat roof in your residential or commercial building here are the four materials that you can choose from:
Firestone's EPDM (Ethylene Propylene Diene Monomer)
EPDM is a tough material that lasts for a long time. The material can be anchored with glue, fasteners or be ballasted with stone. The main advantage of the material is that it's easy to install. This is because it's light.
The material is also highly resistant to scuffs and tears so you do not have to worry of leaks. In case there is an accident and the material has leaks, the leaks are very easy to patch. In fact you can patch them even if you do not any leak patching knowledge.
Although, EPDM has these advantages, it promises to absorb more heat so it can make your house very hot. Although, there are EPDM versions that come with light-colored coatings, the versions tend to be expensive.
Build-up roof (BUR)
This roof is made from hot tar and gravel. The main advantage with it is that the material (gravel) is fire resistant so that you do not have to worry of your roof catching fire.
The material can also be used for windows and decks that overlook the roof. Another great advantage is that BUR is cheap so that many people can afford it.
The main drawback is that the material tends to be smelly and messy to install so it's hard to install it if you do not have the right skills. Gravel also offers to clog gutters and scuppers which makes it hard to locate leaks.
The good side with bitumen is that it's easy to install; therefore, you can install it even if you have minimal roofing knowledge. The material also reflects heat so your house does not get hot. It's also affordable so many people can afford it.
The main advantage with it is that it can easily catch fire because it's not recommended for occupied buildings. It's also easily tears off when there is a weak point.
This material is tough. PVC also easily reflects over 90% of UV rays which lowers the absorption of heat so it greatly reduces the cooling costs.
Although, the material has these advantages, it has its fair share of disadvantages. One disadvantage is that it has low strength so it's incapable of holding high weight. The material also offers to shrink which leads about leaks.