National Coatings Blog

Roof Restoration Systems for Different Substrates

Posted by Nicole Gale on Thu, Apr 16, 2015 @ 11:00 AM

All Acrylic and Emulsion & Acrylic Systems

Need Help? Contact a Roofing  Professional  Zero ObligationAcryPly Roof Restoration Systems can be applied over BUR, Modified Bitumen, EPDM, PVC, TPO, Hypalon, Metal and Transite. The roofing systems contain polyester fabric that is embedded into the base coat, across the entire roof field. This provides the existing roof with an extremely durable, reinforcing layer. The AcryShield base coats used in these restoration systems provide waterproofing, superior adhesion, resistance to ponded water, bleed-through protection and resistance to plasticizer migration. The AcryShield top coats provide industry leading UV protection, longevity and brightness. They are formulated for superior dirt pick-up resistance and protection against biological attack, such as algae and mold. 

2 Different Systems:

  • The AcryPly All Acrylic System for roofing substrates that is smooth such as single-plies and metal.


  • The AcryPly Emulsion and Acrylic System designed for asphalt, BUR, and Mod Bit roofing. This system uses LiquiSeal™ emulsion, which economically fills in any cracks and voids typically found in asphalt roofing. This provides additional waterproofing and an outstanding foundation upon which to build the balance of the membrane.

acryply_emulsion_-_acrylic_diagramDownload our FREE Benefits Brochure For Detailed Information On Our Systems & Coatings

Tags: BUR Roof Coating, Coating directly over EPDM, leak repair, roof repairs, Restoring TPO, Restore Metal Roof, Asphalt roof coating, re-roofing

A Simple Test to Determine if your Asphalt Coating will Adhere

Posted by Nicole Gale on Tue, Nov 18, 2014 @ 12:00 PM

Before_Harbor_Freight_Image   After_Harbor_Freight_ImageAsphaltic roofs with emulsion are excellent at waterproofing your roof membrane. These roofs are applied across thousands of roofs in America and have been proven to be very successful. With all roofs, there comes a time when aging and failures begin to occur, at this time, we recommend apply an asphalt coating system to renew and restore these roofs, allowing you to avoid a costly tear-off.

Asphalt Roof CoatingsAsphalt roofing with emulsion can be difficult to adhere to because of its chemical make-up that gives it the ability to resist water; therefore, it is helpful to know a few ways to test how well the asphalt coating will adhere in order to insure proper and complete adhesion. 

  1. (For new construction only) Make sure the asphalt emulsion is completely dried. The surface may feel dry but make sure beneath the surface where the asphalt meets the existing roof is dry. This may take a day or two. Other factors to consider are weather conditions. Heavy dew, fog, rain, humidity, etc… will cause the asphalt to dry at a slower rate. If the asphalt doesn’t get proper adhesion to the roof surface, you will have adhesion issues going forward.
  2. Many asphalt emulsions contain large amounts of emulsifiers and surfactants. These ingredients have a tendency to come to the surface and cause the rooftop to be soapy and slippery when wet. Test a small area by applying a few drops of water to the roof and rubbing around with your finger. If the water turns black and feels slippery, then you know your roof contains too much residual “soaps” for proper adhesion. A pressure washer is great at removing the soap from the rooftop but you need to make sure to flush all the water off of the roof without allowing it to collect and/or dry in ponded areas as adequate adhesion can not occur with the soap between the asphalt and the coating layers.
  3. Once all the soap is rinsed properly off the building, a simple spot test with water drops and your finger (as described above in #2) should be conducted again to ensure the pressure wash removed all the soapy materials. If the test shows soap again, another pressure wash of the entire roof surface is necessary.
  4. After the washing is complete and the spot test shows there is no more soap then a final field test is conducted on a dry asphalt surface. Take a piece of 1 inch masking tape about 5 to 6 inches long and press firmly onto the surface. Pull it back at a 180˚ angle. If the tape has satisfactory adhesion, then it will not peel away easily and will not contain dirt, degraded asphalt or other materials that would cause interference with proper adhesion.

When you’ve completed the few steps above and are left with a clean piece of tape that had good adhesion to the asphalt surface, you are ready to apply the asphalt coating system knowing that proper adhesion will be achieved. Get more information on our asphalt coating systems.  These systems can be applied on a new asphalt roof for added protection and energy savings, and on older systems for renewal and roof life extension.

Need Help? Contact a Roofing  Professional  Zero Obligation


Tags: Asphalt Roof Membrane, Asphalt Coatings, Asphalt roof coating, coating asphalt

Asphalt Roof Coating Systems Can Prevent a Roof Tear-off & Save Money

Posted by Nicole Gale on Tue, Aug 05, 2014 @ 12:00 PM

Asphalt roof coatings are excellent for restoring aged or failing asphalt, BUR (Built-up Roofing) or Mod Bit (modified bitumen) roofing substrates. These coatings provide two valuable qualities – avoid a roof replacement and gain an energy efficient roofing system. 

asphalt-before-coatingLet’s discuss the first benefit – an asphalt roof coating system allows you to avoid a roof tear-off or roof replacement indefinitely. These asphalt coating systems fully restore your existing roof membrane to a new roof without the cost and time a traditional roof replacement or roof tear-off would take. There are no landfill fees, no additional waste removal stages, and no business closures. The asphalt roof coating system is spray applied directly over your existing roof membrane creating a monolithic, seamless roofing substrate.  With the use of the AcryShield A400 acrylic, elastomeric roof coating, your asphalt roof will benefit from advanced bleed-blocking properties and prevention of early roof degradation. The AcryShield base coats provide excellent waterproofing, superior adhesion, and resistance to ponded water. These systems are renewable allowing you to restore your roof every 10-15 years, avoiding a roof tear-off forever.

asphalt-coatedSecondly, they save you money by cutting down on your energy usage. The AcryShield topcoats provide industry leading UV protection, longevity and brightness to your roof. Your existing roof is transformed into a brand-new roof membrane that prevents a majority of the heat from the sun from being absorbed into the building. The white roof coating reflects the heat away from the roof lowering the surface temperature of the roof and the inside temperature of the building. This provides a substantial temperature difference from the original black asphaltic surface. After the National Coatings' Cool Roof was installed we definitely noticed a difference in building temperature. It's not a marginal difference, either. It is between 15-20 degrees cooler inside the warehouse and store." - Jerry Moore, Facilities Director at Harbor Freight Tools

These asphalt coating systems can be applied as a roof maintenance system for localized reinforcement and added UV protection to lower energy consumption, or as a newly constructed roof to give your dark asphalt roof a white roof coating for energy savings and also as a roof restoration system to fully restore your aged building providing you with extra insulation and/or structural enhancements with added energy efficiency. To learn more, download our FREE Asphalt Roof Coating System brochure for additional information.

Asphalt Roof Coatings

Tags: Asphalt Roof Membrane, Asphalt Coatings, Asphalt roof coating, coating asphalt