National Coatings Blog

Ponded Water On Your Commercial Roof Can Lead To Roof Damage

Posted by Nicole Gale on Thu, Feb 23, 2017 @ 08:00 AM

canon_10-5-07_373.jpgThis winter has been quite a wet season, bringing to light many roofing issues that have created leaks. Ponded water is one of the issues that can lead to damage if it is not properly taken care of.

What is ponded water?

The National Roofing Contractors Association (NRCA) defines ponded water as "water that remains on a roof surface longer than 48 hours after the termination of the most recent rain event.” Water that sits on your roof top for an extended amount of time can lead to blistering, delamination and peeling of the roof surface. This ultimately results in a leaking roof that is in need of repair.

What Causes Ponded Water?

Ponded water can occur on the rooftop either because of a poor slope design or drainage issues. Conducting a semi-annual roof maintenance inspection every six months helps ensures that your drains are not clogged or obstructed and they are working as expected. Roofs that have a bad slope causing rainwater to constantly pool together in a specific location will need to be fixed by a roofing professional.

Solving Ponded Water Issues

acryshield-spf-diagram-roofguard.pngThere are roof coating systems, such as the AcryShield SPF Roofing System which allows a roofing contractor to create a new custom slope directly on top of your existing roof, ensuring that the next time it rains, the water will lead to a drain. The spray polyurethane foam (SPF) used in these systems is applied heavier in areas to create an angle that draws the water towards the drain. The base coats used in the AcryShield SPF Roofing System also add additional ponded water protection as they are capable of retaining their waterproofing and superior adhesion capabilities after being submerged in water for an extended amount of time.

National Coatings has a full line of AcryShield roof coatings that provide excellent waterproofing, superior adhesion, and resistance to ponded water for almost any roofing substrate including: Asphalt, BUR, Mod Bit, TPO, PVC, EPDM, Hypalon®, Metal, SPF and Concrete roofing. If you would like more information on our base coats or roofing systems with ponded water resistance, download our FREE Product Brochure!

SPF Roof Coating

Tags: Ponding Water Resistance

Wondering If You Have A Low-Sloped Roof?

Posted by Nicole Gale on Tue, Feb 21, 2017 @ 08:00 AM

DSCF5510.jpgMore than likely, you have a building with a low-sloped roof or a steep-sloped roof. How can you tell the difference? As defined by ASTM Standard E 1918-97, a low-sloped roof has a surface with a slope of 2:12 inches or less and a steep-sloped roof has a slope greater than 2:12 inches.

Low sloped roofs are sometimes referred to as a flat roof; however, the pitch on a low-sloped roof is greater than that of a flat roof, which is 0 inches to 2 inches. Low-sloped roofs are designed with some pitch, to allow water to flow off the rooftop into a proper drainage system. A dry rooftop ensures the roof will remain durable and watertight. Ponding of water can increase the likelihood of a leak, and can promote algae, mold, or other plant life to grow, causing damage to the roofs surface.

Often times, low-sloped surfaces have one of the following roofing products on them: Roof coating systems, single-ply membranes (EPDM, Hypalon, TPO and PVC), asphalt, built-up-roofs (BUR), modified bitumen or mod bit, spray polyurethane foam (SPF), or metal. A low-sloped roof also has components such as flashings, copings, and drains.

Cool Roof Low-sloped roofs can greatly benefit from reflective roofing products by creating a cooler indoor ambient air temperature, lowering energy utility bills and lengthening the lifespan of the roof. The easiest and most cost effective of these products to install would be a Cool Roof Coating System because it can be installed directly onto the existing roof membrane without needing to tear-off the existing roof. Cool Roof Systems also do not require businesses to close during installation as they are non-disruptive.

For additional information on roof coating systems, reflectivity and Cool Roof Coatings, download our FREE Product Brochure.

Commercial Roofing Contractors g

Tags: low slope roof, Commercial Roofing

Visit National Coatings at the International Roofing Expo - Booth 742 & 744

Posted by Nicole Gale on Thu, Feb 16, 2017 @ 08:00 AM


National Coatings is exhibiting at the 2017 Int’l Roofing Expo March 1st - 3rd at the Mandalay Bay Convention Center in Las Vegas, Nevada. Visit us at booth #742-744. 

We will be showcasing our high solids, low VOC, sustainable Silicone roof coatings that extends the lifespan of your existing BUR (smooth), concrete, EPDM, metal, modified bitumen (mod bit), Spray Polyurethane Foam (SPF), PVC or TPO roof. Come learn about the many capabilities and benefits our Silicone Roof Coating Systems have to offer and meet our sales team. We have sales representatives located across the US, to help you with all your roofing questions and needs - from new construction to roof restoration, we have you covered!  

FREE GUIDE:  Restore Aging Roofs with Silicone

Benefits of a National Coatings Restoration or Maintenance System:

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  • Extend the Life of your Existing Roof without a Costly Tear-Off
  • Cost Effective Roofing Solutions - 50% to 70% less cost than a traditional roof replacement with the added benefits of energy savings, reduced life-cycle costs and reduced roof maintenance.
  • Energy Savings - Reduce cooling costs by 20% or more.
  • Reduced Roof Maintenance - AcryShield coatings are rich in UV blocking ingredients to protect your roof from the leading causes of roof degradation - the sun's UV rays.
  • Quick Installation - Our roof coatings allow contractors to avoid extra installation stages to achieve excellent adhesion. We also offer a line of QuickSet products.
  • Watertight - Proven to stop leaks for over 35 years.
  • Seamless Membrane - Fluid applied and custom tailored to meet the individual needs of each roof.
  • Ultra Low VOC's
  • Non-Intrusive Application Process - No disruptions to employees, customers or tenants inside the building.
  • Direct Adhesion to Aging Single-Ply Membranes - These systems tenaciously adhere directly to weathered single-ply surfaces such as TPO, EPDM and Hypalon without the need for additional primers or an etching rinse.
  • 10, 15, or 20 Year Warranties are Available

We look forward to speaking with you - Stop by our booth #742-744 to learn more! 

If you are unable to attend the show but are interested in additional information regarding our AcryShield Roof Coating Line or more information on our Restoration and Maintenance Systems, download our FREE Full Line Brochure. Or, if you would like more information on our Silicone Systems, you can download our FREE Silicone Roof Coating Brochure!

Download our FREE Benefits Brochure For Detailed Information On Our Systems & Coatings