National Coatings Blog

“Breakthrough Adhesion Technology” for Coating EPDM Roofing

Posted by Nicole Gale on Tue, Jun 24, 2014 @ 09:00 AM

 Project:  North Garner Middle School Media Center, Garner NC

Coating EPDM RoofingThe 106 SQ mechanically fastened EPDM roof was beginning to show its age after years of heat, sunlight and rain.  Rather than replace the roof, the facility manager at the school decided to restore the roof using acrylic coatings. The project called for the use of the National Coatings Corporation AcryShield Roof Maintenance System (ARM) using the AcryShield A502 primer and A500 reflective topcoat system.  This coating system is unique in the roof coating industry as it is not only waterborne, but also does not require a corrosive primer that is normally used to achieve adequate adhesion to EPDM.  The project called for reinforcing the seams and applying >24 mils of coating.

The Technical Director of National Coatings Corporation conducted the final inspection, “The A502 base coat had truly tenacious adhesion to the EPDM. I had difficulty peeling a coating sample from the membrane to measure the dry film thickness. This product performs well and provides excellent long term durability and sustainability.” 

An additional benefit of the white reflective coating is the increase in solar reflectance and corresponding reduction in heat gain and air conditioning energy costs.  Typically a black EPDM roof has about 10% reflectance, while coating it increases the reflectance to 83%.  Simply stated, the higher the solar reflectance, the cooler the roof, the cooler the interior and the less air conditioning that is required.Coating EPDM Roofing

Baker Restoration, a division of Baker Roofing in Raleigh NC, was selected to install the National Coatings Corporation roof coating system.  Jimmy Ramirez, Manager, Specialty Coatings, for Baker Roofing oversaw the project.  He noted during the post installation warranty inspection that the National Coatings Corporation roof coatings sprayed very well and he was particularly impressed with the adhesion of the A502 primer.  Normally Baker will check adhesion of the primer prior to application of the top coating.  He checked the adhesion and found it to be excellent. 

Need more information on Restoring Single-Ply Roof Membranes – download our brochure for FREE! Or for more information regarding our AcryShield A502 basecoat product, download - Direct Adhesion to Aged and Failing Single-Ply Membranes

Get More Info on Direct Adhesion to Aged &  Failing EPDM, TPO & HypalonGet More Info on Direct Adhesion to Aged & Failing EPDM, TPO & Hypalon


Tags: Coating Systems, Coating System, Roof Restoration, Roof Coating, Cool Roof Coating, White Roof Coating, Commercial Roofing, Coating directly over EPDM, Coating EPDM, roof restoration system