Roof Decks

Roof decks play a critical role in building envelope performance. They’re flat, occupied surfaces sitting directly above livable space — which means they must manage water, movement, and drainage flawlessly. When the waterproofing system isn’t engineered or installed correctly, moisture enters the structure, leading to rot, mold, and costly repairs.

In Philadelphia, roof decks became popular in new construction starting in the mid‑2010s as builders looked to maximize outdoor space in dense neighborhoods. As demand grew, so did the need for systems that could handle foot traffic, weather exposure, and long‑term durability. What began as an amenity quickly became a building‑science challenge — and a critical part of the envelope that requires tested, compliant, walkable waterproofing solutions.

Balcony Decks

Balconies are one of the most vulnerable points in the building envelope. They’re exposed, occupied, and directly connected to exterior walls — which means any failure in waterproofing or flashing can drive water straight into the structure. In Philadelphia new construction, balconies became common as builders added outdoor living space to narrow footprints, but that also introduced complex detailing at the wall interface.

Leak Detection

PRM brings a level of insight that only comes from working on both ends of the waterproofing industry: building new systems exactly as engineered and restoring failed systems we did not install originally. That combination gives us a rare, full‑spectrum understanding of how roof decks and balconies should perform — and why they fail.