What to Know About Single Ply Roofing Systems
Here are the basics of single ply roofing systems.
When you are talking about getting a single ply roof, there are quite a few things you are going to want to take into consideration. Although these roofs are chemically superior to other roofs, they also happen to be much thinner and susceptible to puncture should someone drop a hammer or throw a bottle up there. It is important that people weigh the pros and the cons of single ply roofs before deciding what is going to be the best option for their own building.
The biggest downside to single ply roofs is that they can get punctured easily. If somebody is walking on the roof, or if somebody drops a hammer or a knife when they are on it, then you are going to have a leak. So that is a problem, especially with lower buildings where people can easily throw things up there.
If you are building a one-story, fourplex home, where people might be climbing up on the roof and making a mess, then you definitely do not want to go with a single ply roof. In that case, you are going to want to choose a two or three ply built up roof or a modified roof simply because those options are physically stronger. There are multiple layers to those roofing styles, which means they can physically take more abuse before wearing out or causing leaks.
Because single ply roofs are chemically superior, though, they can be a great alternative to restaurants that might have animal fats building up on the roof. The chemical properties of these roofs allow them to stand up well to things like animal fats or acid rain, along with inclement weather like wind, snow, or extreme sun. So all of those are reasons why a business would certainly choose a single ply roofing option.
Another industry that commonly asks for a single ply roofing system is hospitals. If you are a hospital, you really dont want a hot tar roof material that is going to be seeping through and producing noxious fumes, especially once heat and temperature changes are taken into consideration. So instead, what you would be looking for in that type of situation is a single ply roof that is going to be chemically superior and cleaner at the same time.
There are many grades of single ply roofs, and depending on which grade you have chosen, you may need to get your roofing maintenance done more or less often. Generally, you can get a good 10- or 15-, even 20-year manufacturer warranty on commercial projects with these roofs.
Meanwhile, the average life span for a single ply roof is no more than 16 years on average. And after 16 years, people should plan on needing to do some re-roofing or some other type of major repair. One good aspect to single ply roofs, in this regard, is that the roofs lightness means that you can overlay the roof a lot of times before needing to tear it off entirely and start over. So people who have a single ply roofing system in place can just go over the areas where they need additional layers of roofing, which can be cost-effective.
Finally, I should explain that a lot of people prefer the single ply roofs for climate reasons. The single ply roofs are usually white in color, which can be reflective and therefore beneficial for those living in hot climates thanks to its thermal properties. So environmentally speaking, that is another reason why single ply is favored.
There are a million factors why you would or wouldnt choose a single ply roof, and all of the above reasons only start to touch on those factors. Most important, though, is that each homeowner or building owner knows the specific needs of his building, because that will be the biggest determination when choosing between a single ply or another roofing system.
Frequently Asked Questions
Can anyone tell me the names of the materials that are needed for a flat roof repair job?
I need to repair a flat roof but I don’t know the names of the materials I need. If anyone does can you please tell me. It is a tar roof. Thanks
Actually this is a far too complicated question for this format.
The question is simple enough,but the background isn’t.
We don’t know what the problem is (most likely leakage),
but without more detail it’s hard to give proper advice.
I could tell you use EPDM ,which is a rubber membrane,
but that may not be what you need.
The material used depends a lot on your local climate.
Sun or snow 🙂
Local,State and Federal offices have info about the proper construction for a flat roof.
Tar,while still being used is not an ideal material
and is superceded by synthetic rubber materials.
Regardless,your finish coat should always be a white UV resistant and waterproof coating,no matter what is underneath.
Your best bet is to get familiarized with the process by doing a search – Google or Yahoo etc
for “flat roof” or “flat roof repair” or similar.
The next thing is to find an interactive DIY forum,
such as http://www.diychatroom.com/forumdisplay.php?s=851b2c5358b381daaf236ba4db36c481&f=9
Again do a search for DIY forums.
This way you have more interaction with the forum members
and you can accurately describe the location,size and other details of the roof.
what is the cheapest product to buy to repair a tar and gravel roof .?
If you have a small hole use HENRY’S wet patch. You can find this at Home Depot. Apply enough to coat the hole with a putty knife then place fiberglass tape over the hole. Put another layer of HENRY’S over the tape.
how long does it take for roof tar to dry on a ac repair job?
If the Tar was applied to a clean and dry surface, you have NOTHING to worry about. It will seal immediately and repel water immediately.
Additionally, if it ever completely dries, you didn’t put enough down or it must be at least 20 years later.
Roof repair – needs inexpensive help badly…?
I have an old house/roof – poured tar and gravel roof about 40 years old. There is one good deep hole making a huge leak. There are several unpredictable cracks – the poured tar has to go through lots of New Mexico heat and cooling.
I have received quoites for repaid – they are saying replace the whole thing – k. I do not have 10K and I do not know if I can get this done by the time winter comes.
I am going to embark on a repair attempt.
1) Plan on patching the hole. Clean the area; lay insulation plastic over roof tar and then Tar paper over that. Good idea?
2) I have seen water poly-urethane repair sealants – can I pour that over the tar and have that work until spring?
3) Any other suggestions, or should I abandon this plan and try to get the cash by blood and borrow to get it repaired?
Thanks you for your kind advise.
You need a couple pieces of plywood bigger than the hole(make one piece the same as plywood the rest of roof has,unless the hole happens to be over a roof rafter.First rough trace hole onto 1 piece of plywood,take other piece of plywood,put it up in place over hole,use 1 1/4″ screws up from underneath.Cut other piece to fit into hole.Place that piece in hole,tar over and in around repair,you may want to add more to cover the area than spread the same rocks onto the fresh tar.
Flat roof repair…can this be done?
I have a 8×10 flat roof with torch down and torch down is in need of replacement. I want tp spend very little money to get through to next spring when then I am replacing the whole roof. Could a roofing tar (Henry’s, etc) be applied over the torch down to get me through the rainy season? Will this work? Other thoughts from experience. Thanks
Thanks for answering. I promise to have it done right in the spring. Might even get a bid now. Could be affordable to do.
USA Torch down systems are problem systems. Yes, you can repair it with mastic for now. Be sure to embed mesh in the mastic, or it will crack and split in a few weeks. Apply a heavy coat of mastic, then mesh, then another heavy coat of mastic. Come spring, put a rubber roof on. You should put an insulation over the torch down system, then the rubber. It will save on heating costs, and will last 20 years if done right.
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