Technical Articles

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Water-Based Acrylic Roof Coatings for Weatherproofing
Over the last three decades, water-based acrylic coatings have come to dominate the paint and waterproof coatings industry.

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AcryShield Over Emulsion
Asphalt emulsion surfactants can be drawn by moisture to the surface and leave a soapy residue; therfore, great care must be taken prior to applying Acryshield over asphalt emulsion.

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ASTM D6083
Different products from the same manufacturer, or different products from different manufacturers, can now be directly compared using ASTM D6083 results.

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A500 Oil Resistance
To quantify and compare the oil absorption onto AcryShield A500 to Hypalon® coated un-reinforced EPDM.

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Usage of Bulk Emulsion Tankers
Asphalt emulsion, by definition, is a product that is thicksotropic in nature. “Thicksotropic” is defined as any liquid that inherently becomes thicker or ‘gels’ over time.

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Basic Adhesion Test
National Coatings Corporation highly recommends that one of the adhesion test procedures outlined below be performed on roofs prior to the application of an AcryShield roof coating system.

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Tanker, Tote & Drum Hook-ups
A typical pump feed line should be a 2”-4” hose. Each end of the hose should have female cam-lock fittings/connectors on both ends. Tankers will have male cam-lock fittings/connectors. Normally the cam-lock fittings/connectors on a tanker or tote will be 4”.

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A Brief History of Low Slope
Throughout the years some of our competitors have claimed to have products that are equal and cheaper than ours, they’re not.  Read why.

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Acrylic Roof Coatings 101
Most people are familiar with at least one acrylic plastic, Plexiglas®.  Read why.

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Apple Computer The Core of the Problem is the Skin
Apple Computer has been widely acknowledged as a leader and innovator in personal computing.  Read why.

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Dealing with and Coating Asphalt Emulsion Coated Roofs
While asphalt is considered very hydrophobic (read: it makes a great waterproofing material) when it is formulated as an emulsion, it contains additives to keep the asphalt stable in the water carrier.  Read why.

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The Risky Waterborne Roof Coating Shoulder Season
It doesn’t require looking at the calendar or the trees changing colors to realize that as roofing contractors, we are entering the “shoulder season”. Read why.

EQUIPMENT GUIDELINES
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Guide for Selecting Roof Coating Spray Equipment
An acrylic roof coating can be applied via roller, brush, squeegee or spray; however, the most cost efficient way (especially for large jobs) is the airless spray. This guide discusses the equipment components necessary to spray-apply acrylic roof coatings and asphalt emulsions.

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Silicone Coatings Spray Guide
This guide should be used to provide basic instructions for spray applying the silicone coatings produced by National Coatings. This guide discusses the equipment components necessary to spray-apply silicone roof coatings.

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Sprayed Polyurethane Foam Equipment Guidelines
The purpose of this guide is to assist in the selection of application equipment for Sprayed Polyurethane Foam (SPF). This guide discusses the equipment components necessary to spray-apply polyurethane foam as well as capacities and alternatives.