Unlike angular roofs, flat roofs aren’t as easily diagnosed with damage and are, therefore, not always repaired as they’re meant to be. Flat roofs are made from many different materials with each having varying lifespans and signs of damage. And even with diligent maintenance, flat roofs often need fixing. So where do you start? How do you know whether you should fix your flat roof or leave it be? How can you catch these problems early?
Step 1: Know Your Flat Roof
Flat roofs can be made from asphalt, coal-tar, PVC/vinyl, liquid membranes, modified bitumen, metal and even fiberglass; each with their own advantages and disadvantages. They are used in various styles and arrangements that then make up the types of flat roofs available. Let’s have a closer look at a few of common types of flat roofs.
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Built-up roofing or BUR flat roofs
This has become a generic term used for a method of roofing that involves adding layers. It is typically alternating layers of felt and waterproofing materials. The latter makes up for the bulk of the roof and may be asphalt or coal-tar. Coal-tar is banned in some areas as it is believed to cause cancer. BUR is commonly found on commercial buildings as it is a durable and affordable option; however, it is easily a victim of sun damage and requires replacement fairly often.
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Modified Bitumen
Most commonly found on residential flat roofs. The bitumen is plasticized by mixing a membrane rubber into it and then it’s rolled into sheets. The reinforcing sheets are still needed, but the number of plies needed is much less, usually three. This combines the practicality and ease of install of membrane roofs and the durability of BUR roofing. But the elements can wreak havoc and without the proper maintenance will often times require replacement before its reached its life expectancy.
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Single-Ply (TPO) Flat Roofs
Often regarded as the most reliable and practical of the flat roof types, it can be made from thermoset or thermoplastic membranes with each subtype either referred to as rubber or plastic roofing membranes. Although slightly more expensive than average roofing material, they last longer and require less short term maintenance.
Step 2: Know If Your Flat Roof Needs Fixing
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Inspect it
The first step to knowing whether your flat roof needs to be fixed is looking at it. Regularly examining your flat roof can help you spot a problem early enough to warrant simple fixing and save you the hassle and cost of premature replacements. Inspect the whole roof, walking the full surface area, sweep away dirt, dust or debris to evaluate the roof unobstructed and use all your senses to gather information – sight, touch, smell, and sound.
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Describe it
During your inspection, you should take note of and describe:
- the presence of ponding, mold or moss growing on the roof or ceilings of the top floor;
- Exposed asphalt or tar area, other cracks or blisters.
- sagging or bowing of your roof
- the feeling of the flat roof under your feet as you walked its length – spongey or brittle;
If you notice any of the above features, your flat roof may need fixing.
Step 3: Know Who to Call
Now that you know that your flat roof needs fixing, the next step is to hire a professional to assess the damage and the extent of repair necessary. Often, problems with flat roofs are much more than aesthetic changes. At AABCO Roofing, you can be sure that you will be making a commitment to quality, strong and long-lasting roof repairs. As a licensed and insured contracting service, we guarantee quality service and materials at great prices.
If you have any questions about flat roofs, roofing or about our company, contact us today!
