National Coatings Blog

Preparation:

• Clear roof of debris – dirt, gravel, leaves, branches, etc… may need to need to use a power broom, vacuum, or scraping method to remove debris
  
  
• Clean roof with a pressure washer to remove any remaining dirt. An Industrial Cleaner may be necessary to make sure the surface is sound and free of any materials that would inhibit proper adhesion.
  
  
• Repair all cracks, holes, and other surface imperfections with AcryFlex or an AcryShield base coat depending on the roof substrate
  
  
• Cut out and remove all blisters
  
  
• Reinforce localized problem areas (such as areas where blisters stood) by embedding T272 polyester reinforcing fabric in an AcryShield base coat
  
  
• For PVC membranes only: Apply PVC Primer A130 to entire roof field at the rate of ½ gallon/100 square feet

Application of an Elastomeric Roof Coating:

 

• Apply a base coat of AcryShield by spray or roller across the roof field (see below for rate/gallon per 100 square feet based on roofing substrate)
  
  
• Allow 8-24 hours for coating to thoroughly dry
  
  
• Apply a top coat of AcryShield coating in a crosshatch technique (see below for rate/gallon per 100 square feet based on roofing substrate)
  
  
• Allow coating to dry before exposing to foot traffic 

 

Rate per Gallon per 100 Square Feet

Asphalt / BUR / Mod Bit

• The entire roof shall receive the ACRYSHIELD Roof Management System (ARM) consisting of 3 gallons per 100 square feet of ACRYSHIELD, applied evenly in two separate coats.
• AcryShield A503 base coat - 1.5 gallons per 100 square feet
• AcryShield A400 top coat - 1.5 gallons per 100 square feet

EPDM / PVC / TPO

• The entire roof shall receive the ARM System consisting of a minimum of 24 dry mils of ACRYSHIELD coating or approximately 3 gallons per 100 square feet.
• AcryShield A502 base coat - 1.5 gallons per 100 square feet
• AcryShield A500 top coat - 1.5 gallons per 100 square feet

Hypalon

• The entire roof shall receive the ARM System consisting of a minimum of 20 dry mils of ACRYSHIELD coating or approximately 3 gallons per 100 square feet.
• AcryShield A502 base coat - 1.5 gallons per 100 square feet
• AcryShield A500 top coat - 1.5 gallons per 100 square feet

Metal

• The entire roof shall receive the ARM System consisting of a minimum of 24 dry mils of ACRYSHIELD coating or approximately 3 gallons per 100 square feet.
• AcryShield A510 base coat - 1.5 gallons per 100 square feet
• AcryShield A400/A510 top coat - 1.5 gallons per 100 square feet

For more in-depth details regarding application for an Elastomeric Roof Coating System, view our Installation Guide Specifications

CONTACT A ROOF COATING PROFESSIONAL TODAY WITH ZERO OBLIGATION – WE ARE HERE TO HELP!

An aged EPDM roof substrate can greatly benefit from installing a preventative roof maintenance system.  The AcryShield EPDM Roof Coating System can prolong the life-span of your existing EPDM roof, lower roof maintenance costs, decrease energy usage and costs and these EPDM roof coatings are renewable, indefinitely.

The ease of application and non-intrusive application process for installing one of these systems makes them attractive to both building owners and contractors. With minimal noise disruption – no drilling, nailing or seam-welding necessary, ZERO or ultra-low VOCs, no harmful or strong odors, your company can remain open and conduct business as usual with minor distractions.

Let’s dive into the installation process… 

Examination

Before application begins, all surfaces that will receive the AcryShield EPDM roof coating system need to be clean and smooth – free of moisture, dirt, debris and any other contaminations. All roof penetrations, mechanical equipment, cants, edge metal, and other on-roof items need to be established that they are in place and secure. Drains need to be cleaned and in working order. The surrounding areas, air conditioning systems, and air intake vents in the immediate vicinity of the coating system need to be protected and/or closed from over-spray.

Surface Preparation In order to prepare the surface of the roof and insure it is clean and smooth for proper adhesion of the coating, the following may be necessary - an industrial cleaner, scraping, power brooming, vacuuming or other means to remove the debris. Pressure washing the rooftop prior to application of the EPDM roof coatings significantly removes extra dirt and debris; however, it is important to note areas of defect or leaks should be manually cleaned to avoid causing a larger issue.

After the cleaning stage is completed you will need to seal and reinforce all loose seams and other failing areas specified by the coating manufacturer on the existing EPDM roof system. National Coatings recommends using either butyl seam tape or saturating 10” wide T272 polyester reinforcing fabric in AcryShield A502 base coat. HVAC duct work joints, mechanical equipment, coping seams and other critical junctures should be sealed with AcryFlex, an architectural sealant, and reinforced with polyester fabric or butyl seam tape. Skylights, equipment platforms and all other roof penetrations should be reinforced using 20” wide T272 fabric and AcryShield A502 base coat. The sealants and base coats will need 8 to 24 hours (depending on weather conditions) to dry thoroughly before application begins.

Application
After the entire roof field is cleaned, defects and seams are repaired, and custom reinforcement has been installed, the application process begins. A base coat is installed across the rooftop. The AcryShield A502 base coat is ideal for coating single-ply as it was specifically made to tenaciously adhere to hard to coat surfaces such as EPDM, while eliminating the need for additional primers or etching rinses. After the base coat dries, which takes 8 to 12 hours, a topcoat is applied. The AcryShield A500 topcoat is supreme as it provides longevity, brightness, superior dirt pick-up resistance and protection against biological attach, such as algae and mold. The A500 exceeds all ASTM D6083 requirements and also offers excellent tensile strength, elongation, and wet adhesion.  Once the topcoat dries, roughly another 8 to 12 hours, the EPDM roof coating system is complete and can be exposed to foot traffic.

Contact National Coatings for a detailed installation specification for EPDM Roof Coating Systems for further information on required gallons per square feet, dry mil thickness and other important application requirements.

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Energy efficiency is a top priority for building owners and tenants in order to reduce energy costs. Now a day there are several methods used to lower energy consumption, which can drastically cut the cost of your energy bill. In the roofing world, elastomeric roof coatings not only provide excellent energy efficiency but also added roof protection against premature failure and a non-intrusive / non-disruptive application process.

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Elastomeric Roof Coatings Cut Energy Costs

Elastomeric roof coatings reflective the majority of the heat from the sun away from the building, prohibiting the roof from absorbing a bulk amount of heat.

 

This allows the interior of the building to remain a cooler temperature without using any electricity. Customers are often surprised with the amount of cost savings a cool roof coating system can provide them. National Coatings did a complete roof restoration job on a Harbor Freight Tools warehouse that was 266,200 square feet and the Facilities Director, Jerry Moore was impressed, “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 and 20 degrees cooler inside the warehouse and store.”

 

Elastomeric Roof Coatings Protect Against Premature Roof Failure

Elastomeric roof coatings offer added protection to your rooftop similarly to how sunscreen works on your skin. The elastomeric roof coating provides a barrier to the roof surface against the harsh UV rays from the sun. It’s ability to reflect and absorb only a small percentage of heat, allows the rooftop to remain durable and flexible. Without a highly reflective elastomeric roof coating, the sun’s heat would dry out your roof, eventually causing the roofing substrate to crack and tear, as well as, lose its ability to expand and contract, as all roofs must do during temperature fluctuations. The degradation leads to leaks and other damage that will need to be repaired immediately.

Elastomeric Roof Coatings are Non-Disruptive

Another great benefit of using elastomeric roof coatings versus other roofing materials is that the coating systems are applied directly over your existing roof – even if you’ve had a prior roof installed. This gives you the ability to conduct your business as usual. No closures during construction, no timely roof tear-off stages or costs, and minimal noise disruption - no drilling, nailing or seam-welding. Check out some of our case studies on customers that require business to be open 24 hours a day and/or 7 days a week such as Kaiser Permentente and the Arden Fair Mall.

Need more information? Download our Cool Roof Buyer’s Guide – it’s FREE!

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