Mule-Hide Products Co. has expanded its silicone roof coating system with Multibase SB, a new primer that delivers stronger adhesion and prevents asphalt bleed-through in non-ponding water conditions.

Multibase SB is a one-part, 100 percent acrylic-based resin. It can be used on modified bitumen, asphaltic built-up roofing (BUR), and polyvinyl chloride (PVC) roof surfaces.

Enhanced Surface Adhesion

The primer contains minimal pigment and no mineral fillers, enhancing its surface adhesion. In addition, its relatively thin viscosity and low surface tension allows the primer to completely saturate the roof surface for a stronger bond.

Multibase SB blocks asphalt bleed-through, helping ensure that white finish coats are clean and bright and deliver optimal reflectivity.

Spray, Brush, or Roll

The primer can be applied using airless spray equipment, roller, or brush. Its light yellow color cures to a darker amber hue as the coating dries, providing visual confirmation that the coating has cured and the finish coating can be applied.

It is not intended for use on coal-tar-pitch roofs, on thermoplastic polyolefin (TPO) membranes, or in areas that experience ponding water.

Multibase SB is available in 5-gallon (18.9 L) pails and 55-gallon (208.2 L) drums.

For more information, contact: Mule-Hide Products, (800) 786-1492, www.mulehide.com