A heavy-bodied, rubberized asphalt, single component sealant used in conjunction with Royston waterproofing membrane installations. It is applied as a thin bead of sealant on the surface of Royston Membranes and creates an impenetrable barrier that prevents the intrusion of moisture at seams, protrusions, and termination points.
A heavy-bodied, rubberized asphalt, single component sealant designed to provide superior performance in waterproofing applications. This sealant serves as a secondary sealant along seams in conjunction with Royston waterproofing membrane installations. Its cold applied nature and low flow characteristics allow for easy application across both horizontal and vertical seams without sagging, ensuring a secure and long-lasting seal.
This product is applied as a thin bead of sealant on the surface of Royston membranes, forming an impenetrable barrier that effectively prevents moisture intrusion at seams, protrusions, and termination points. It can be used with a standard or bulk caulking gun, depending on the packaging.
This product is ideal for contractors seeking reliable performance in sealing and waterproofing applications. Its versatility and strong adhesion make it a preferred choice for a range of construction and maintenance projects.
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Contact Us| Volatile Organic Compounds |
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104CM Mastic Technical Data Sheet
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A brush applied, single component thixotropic coal tar mastic that provides corrosion protection for coating fittings, flanges, valves, and other irregular services. Also, will protect concrete and has good resistance to oil and gas.

A thixotropic mastic, brush or hand-spread corrosion protection

Rubberized bitumen mastic protects below-grade applications

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| Shipping Weight (lbs) | 45 |
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| Solids Content % | 0.75 |
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| Quantity per Package | One 5 Gal Pail |
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| Packaging | EACH |
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| Color | Black |
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| Density | 8.5 ± 0.5 lbs/gal |
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A a two-part, 100% solids, moisture tolerant, Zero VOC epoxy that can be applied to dry and damp surfaces. It has a maximum service temperature of 165°F (74C°).