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What Is The Best Roof Coating For A Flat Roof

What Does Sealing A Roof Mean

What Is The Best Roof Coating For Flat Roofs?

Roof sealants are added to your roof to extend its life expectancy. Sealing a roof provides an extra layer of protective coating that can help prolong damage from extreme climates and other outdoor elements. Sealants are especially useful for roof types that collect water and debris such as flat roofs. It can also be used on other angled roof types as they age to protect from long term damage.

Once applied, the sealant takes the brunt from the sun, rain, and ice, and not your roofs shingles. In addition, roof sealants can make your roof a little more fire-resistant, and prevent the growth of mold and algae.

Sealants and coatings need to be applied by professional roof contractors who have experience applying them. For instance, a novice roofer may leave pinhole-sized openings in the coating which, believe it or not, are often enough to cause leaks and other issues.

So, in a word, hiring a quality roof installer is vital.

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Best Sealants For Roof Leaks Of 2021

Sealants cover roof leaks and protect the remaining area from water and sunlight damage. To learn more about preserving your roof, read our review on the best roof sealants.

Roof sealants not only cover roof leaks, but they also provide a protective layer to prevent water and sunlight penetration. These sealants come in many forms, including liquid in a paint can, liquid in a spray can, liquid in a caulk gun, and adhesive tape. Theyre also made of a variety of materials, including rubber and polyurethane. To learn more about which type is best for your application, read our review on the best sealants for roof leaks.

What Is A Roof Sealant How Does It Work

A roof sealant is kind of like a mix between varnish and paint. It works by sealing up holes and cracks which might be forming on your roof, air vents, and air conditioning units. They have a strong adherence to your particular surface as well, which makes them especially strong. Most of them will also do well to make your vehicle additionally resistant to environmental impacts, such as rain and snow, which can cause the formation of cracks and holes on our roof.

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Hengs Rubber Roof Coating

    If you are looking for a crack-resistant quality coating for your roof, the Hengs rubber roof coating is the one for you. Made using 100% acrylic latex polymer, Hengs is excellent for any kind of EDPM rubber roof. Its material makes it especially resistant against impact, which is the main factor that causes cracks. This also has something to do with its ability to conform to the particular nature of your roof. It expands when exposed to heat and constricts in the cold.

    Like most high-quality sealants, Hengs is UV resistant and is made from non-toxic materials which are safe for consumers. In addition to this, it boasts of excellent insulation and acoustic properties to protect you against the suns heat. When it comes to drying time, Hengs only takes 1-2 hours to be fully dry to touch. You are however advised to give it at least 4 hours before applying the second coat and an extra 24 hours for full curing after that.

    All in all, the coating is good for RV rubber roofs, tears and seams as well as RV vents and air conditioners.

How To Apply A Flat Roof Coating

Flat Roof Coatings

A flat roof coating provides extra protection from pooling water and other elements. The majority of flat roofs you see will have a layer of gravel on the surface, there to push water to the drains. The problem with gravel is that it makes pinpointing leaks impossible. There are two popular flat roof coating methods that are much better than gravel. The first is a rubber membrane which is installed directly to the top of the flat roof. It allows you to see leaks easily while preventing pooling water. The other flat roof coating is a liquid such as polyurethane. Follow the simple steps below to apply both types of coating.

Step 1 Clean the Flat Roof

When you apply any flat roof coating, the roof needs to be relatively clean for the coating to adhere to the surface. Use the push broom and sweep the flat roof as clean as possible. Dispose of the debris in a garbage bag or use a vacuum cleaner to suck it up. Another option is to powerwash the surface and scrub it down with a stiff-bristled brush and surface cleaner.

Step 2 Select a Flat Roof Coating

Step 3 Applying Liquid Coating

Once the flat is cleaned off, you can begin to apply the liquid coating. Make sure to consult the directions on the container to know how long it takes to dry and any temperature considerations. Begin at one of the car corner of the flat roof and work in smaller sections. Use a paintbrush to apply it as you would paint. Pay close attention to applying the coating where the roof meets the sides.

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Is Silicone The Last Roof Youll Ever Need

Silicone is quickly becoming the go to material in the flat roof coatings market. Its benefits range from leak-free protection to improved aesthetic appeal of the roof to improved sustainability. When a silicone roof coating is installed, it is there for performance. These roofs are also highly sustainable, and could quite literally be the last roofing substrate you ever need with only a recoating every 10-15 years. Check out this video that illustrates the ease of application of silicone flat roof coatings: Roof Coating Restoration.

The Benefits of Silicone as a Flat Roof Coating

Lets look at the benefits of silicone as a flat roof coating. What does it do that no other material can? First, it withstands ponding water indefinitely. Because silicone coatings are not water based, they absorb no moisture.

Another benefit to silicone is that it doesnt chalk off as other flat roof coatings do. Silicone is Non-sacrificial, and as such it doesnt slowly shed as time goes by. It will stay fully intact for the life of the roof. Thirdly, silicone doesnt need to be reinforced with roof fabric, saving you time and money on installation. The last major benefit to silicone is that you need less of it than most other flat roof coatings. As little as 2 gallons can be used for 100 square feet.

Get your Silicone Roof Coating sample today!

Things to Watch Out For

Best Roof Sealants To Repair A Leaking Roof

byApril 22, 2020, 3:44 am9.9k Views

A roof is ideally your first line of defense against many elements, which means that it constantly takes the beating of rain and harsh sun so you dont have to. And they will huff and puff, and eventually cause cracks and breakages. Through this repeated process, even the toughest of roofs eventually cave into the forces of nature, but there is a solution to this roof sealants.

Roof sealants have been around for the longest time, used by our forefathers and their fathers to increase the lifespan of your shingles and roofing tiles alike. Sealants act as an extra barrier between your roof and all the rain, sun, fire and ice. They are made using elastomeric material which keeps them flexible to expansion and contraction, such that they hold up for longer. One may argue that modern roofs are made to last long. Indeed they are, but constant exposure to rainstorms and sun eventually causes a significant decline in their lifespan.

Sealants make the ultimate sacrifice by taking the burns instead of your roof they have insulation properties too and hold back the growth of mold and algae. Needless to say, you will need a sealant that is able to live up to all this, which is why we have compiled a list of the best roof sealants out there today.

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How Do You Waterproof A Flat Roof

If you are a building manager, you know very well how difficult it is to keep water off a flat roof. Because drainage on flat roofs is so poor, a common problem is ponding, in which water collects on the roof. This damages the roof in a variety of ways and often leads to leaks. To prevent these problems, building managers constantly look for ways to waterproof their roofs. Applying a flat roof coating for ponding water is one of the best ways to waterproof a roof. Coatings like silicone and acrylic are applied directly over the roof. These coatings are seamless and seal up small holes to stop leaks and help the roof shed water better. They also prevent new leaks from occurring.

Most coatings will work on most flat roofing materials including tar and gravel and modified bitumen roofs. Many also work on metal and concrete roofs. In addition to commercial buildings, coatings are also applied on mobile home roofs as well as on the rooftops of certain campers and RVs. If you want to waterproof your flat roof and need a flat roof coating in Nashville, TN, you can always count on the professionals at Yoders Commercial Roofing for exceptional service. To schedule a service appointment, all you need to do is call 220-1728.

What Number Of Coats Should I Apply

How to choose the best acrylic white roof coating

This number of coats you need purely depends on the type of rod sealant that you need. If you are using urethane or acrylic sealants, you will need to use the primer as well as a couple of sealant coats. If its silicone-based, in most cases, youll only need one coat, without a primer. That said, when using acrylic or urethane coatings, it is best to apply thinner coats as opposed to one thick coat. In this way, your roof will be much more secure in general.

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Asphalt Emulsion Roof Coating

This roof coating is made from emulsified asphalt. As the name suggests, the asphalt emulsion roof coating contains water-dispersed particles of asphalt and uses bentonite clay as the emulsifying agent.

The organic, as well as inorganic fillers and fibers in these coatings, make them one of the strongest roof coating options in the market. Emulsion coatings install across three layers, unlike the other types of roof coatings in Florida. This makes sure that they provide waterproof protection to your roof that will last for years.

What Is Elastomeric Roof Coating

Elastomeric coating is a liquid coating thats applied to flat or low-slope roofs made of concrete, membranous, and metal. It is applied with brushes and rollers like paint, but have benefits that paint doesnt:

  • A Longer Flat Roof Life
  • Elastomeric flat roof coating is seamless layer the entire roof system of a building. This a lifetime protection from pollutants, saline air, and UV rays. A single application of elastomeric flat roof coating can extend a roofs lifespan by 20 years or longer.
  • Energy Efficient
  • Urban heat island is a serious issue today and is caused by absorbing heat from the UV rays. The white color of elastomeric flat roof coating is effective in reflecting sunlight and the solar heat, which keeps the interior of your home cooler too.
  • Protection from the Elements
  • Elastomeric flat roof coating is strong against high winds and severe thunderstorms because it cant be ripped at the seams since it is a solid coating. When the right thickness is applied, it becomes an additional protection to the building and the contents.
  • Easy Maintenance and Repair
  • Elastomeric flat roof coating can be repaired by reapplying where there is damage. No need to scrap or tear any old roofing off, which is also beneficial to sustainability. A small crew of 2 or 3 can complete the repair quickly.

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Tips On Preparing A Previously Coated Roof

How to prepare a previously coated roof for repair

There are few things as hard to effectively repair than roofs that have been already coated once in their service life.

But while they do present difficult problems to overcome, they are still prime candidates for full restoration. Thanks to modern advances in roofing and coating technology, there are now multiple coatings and primers which can stick to almost any substrate or material. But there are other things to consider beside the adhesion potential of new coating products and systems.

What To Look Out ForIf the existing coating hasnt been properly applied , the new system you install may come off the roof along with the old coating.This is why its important to properly prepare a previously coated roof. Ensuring the existing coating has reliable adhesion is critical to the application of a new system.

Testing For AdhesionOne consistent way to test for reliable adhesion is with aggressive pressure washing. Through the use of rotating nozzles and focused pressure washing, you can quickly discover what state the adhesive materials on your current roof are in. Pressure washing helps to show flaws that arent apparent or easy to spot during a general roof survey or inspection.

Regardless of the outcome, after pressure washing and removing older materials, youll be one step closer to applying a new coating system to your roof.

Give us a call today at 416-456-0777.

Pros Of Rubber Roofing

Final Flat Roof (FFR)

Longevity – A properly installed EPDM roof will last much longer than other flat roofing options – up to 50 years!

Ease of installation – EPDM material comes in large single-layer rolls which are easy for your roofing contractor to work with. The rubber membrane is elastic and flexible and you dont need to use blowtorches to seal the seams together.

Resistance to the elements – Since rubber is elastic, it naturally expands in the summer and contracts in the winter. It can withstand temperature extremes easily without wear. Rubber is also a fire retardant and naturally impact resistant.

Affordability – With the average installed price per square foot around $2.50, this roofing option is much more affordable than other flat roofing systems.

Easy repairs – Unless using a ballasted system weighed down by lots of rocks, its straightforward to find roof leaks and repair them.

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How Do You Apply Elastomeric Roofing On A Flat Roof

Wash away surface dirt with a pressure washer. On a clear, warm, sunny day , apply Black Jack, Gardner or STA-KOOL Elastomeric Roof Coating to a dry roof surface. Cut in along edges, then move from one end of the roof to the other keeping a continuous wet edge. Follow all label directions.

In this way, how do you apply elastomeric roof coating?

Application of an Elastomeric Roof Coating:

  • Apply a base coat of AcryShield by spray or roller across the roof field
  • Allow 8-24 hours for coating to thoroughly dry.
  • Furthermore, can you put roof coating on shingles? In fact, most shingles are not designed to handle any type of protective coating. Not surprisingly, the National Roofing Contractors Association does not recommend any type of protective coating be applied to shingle roofs.

    In this way, what is the best roof coating for a flat roof?

    There are 4 main types of Elastomeric roof Coatings namely Butyl, Acrylic, Polyurethane and Silicone. This type of elastomeric roof coating is the best for flat roof repair, low-sloping roofs i.e. single-ply or built-up PVC. Butyl has a very superior water pounding resistance. Butyl also acts as a vapor barrier.

    Does roof coating stop leaks?

    Silicone roof coatings will first and foremost seal up and stop up all of your existing roof leaks, without requiring you to locate and repair every single one individually. If you coat the entire surface of your roof, every single leak will be sealed.

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    What Is The Best Roof Coating For Flat Roof Surfaces

    At American WeatherStar, we design and manufacture multiple ENERGY STAR® rated coating systems for flat roofs. Below we highlight some of the key features and benefits of our best flat roof coating systems. Each one is specifically engineered to restore, waterproof, and protect a wide variety of common flat roof substrates including modified bitumen, smooth and gravel built-up roofs, EPDM, TPO, single-ply, concrete roof decks, and spray polyurethane foam.

    The Ure-A-Sil Roof Restoration System

    Arguably the best flat roof coating system available on the market today, the Ure-A-Sil System sets the standard for performance and value in fluid-applied commercial roof restoration. It combines the superior strength, flexibility, and adhesion of urethane roof coatings with the unsurpassed UV stability, reflectivity, and moisture resistance of silicone roof coatings.

    This powerful combination of urethane and silicone coatings makes the Ure-A-Sil System the ideal solution to protect commercial flat roofs from the damaging effects of ponding water, UV degradation, and other extreme environmental conditions.

    VIDEO: to watch the Ure-A-Sil System being installed on a modified bitumen roof.

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    Jetcoat Cool King Elastomeric Acrylic Reflective Roof Coating

      Best Roof Sealant with Reflective Properties

      The Jetcoat Cool King brought to you by retail giant Jetcoat, is an Acrylic type, reflective Roof Coating. So to speak, it is able to do everything a roof sealant can. This includes the elastomeric properties in place, which allow it to stretch, and act as a rubber-like membrane over your roofs surface. The coating also reflects the suns rays, so you can get to save all those extra costs in air conditioning. It will work well on different surfaces, including wood, metal, masonry and asphalt.

      For best results, you are advised to apply the coating using a soft brush, high-pressure sprayer or nap paint roller. You can add a second coat too for more durability and performance. Through testing, the cool king is estimated to last as much as 5 years on proper application, so you can forget about the hustles of adding protective coats every other year.

      The coating should be applied on a clean roof, free of any debris, dirt or other foreign material. It dries pretty fast too Cool to touch within only 2-4 hours, although you are advised to wait 6-8 hours before applying a second coat. One gallon of this coating covers as much as 50-70 square feet.


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