Southern NH Medical Center

CHALLENGE: Water was leaking through the roof deck into the X-Ray Department of Southern NH Hospital.

THE ALPHA SOLUTION: The Alpha Team provided weatherproofing throughout all the various roofing elements and configurations using advanced polymer, fluid-applied roofing technology. A seamless, waterproof, elastomeric skin with no fasteners, seams, welds or joints was applied over complex roof and slab details.

THE PROCESS: After the existing roofing system was removed and proper surface preparation completed, Alpha applied an appropriate surface primer, and the new fluid-applied system was hand applied to the concrete deck, with a blown-glass in-mat form incorporated into the system to provide crack bridging and durability. A topcoat was then applied to form a monolithic, VOC compliant, UV resistant system that will withstand constant pooling of water without impacting the warranty.

Alpha Weatherproofing’s high-performance roof refurbishment solutions are accomplished without torches, kettles, or heating equipment and our technicians complete through wall flashings for a final waterproof application. These manufacturer-monitored installations can have 10 to 30 year waterproofing system warranties upon completion.

Photo 1: An appropriate surface primer was applied, and the new fluid-applied system was hand applied to the concrete deck, with a blown-glass in-mat form incorporated into the system to provide crack bridging and durability.

Photo 2: Drain and flashing details were applied using appropriate primers, reinforcing mat and liquid membrane.

Photo 3: After the top coat of the waterproofing system had cured on highly-trafficed areas, another coat of liquid membrane was applied and silica sand was broadcast into the surface.

Photo 4: The broadcast system and the “lock coat” were applied in copper green and a water test was then performed to complete the application.

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