Rooftop Deck Build With Waterproof Roof Membrane

We are planning to convert an unused flat roof area above our two-story addition into a functional rooftop deck and are looking for an experienced contractor to handle the full build. The project starts with a structural load assessment of the existing roof deck — confirming that the joists, sheathing, and parapet framing can safely carry the added weight of pedestals, pavers, furniture, and foot traffic before any work begins. Once the structure is confirmed, the scope includes installing a fully sealed waterproof membrane system across the entire roof surface, with proper flashing at parapet walls, drains, and any roof penetrations so water is directed away from the building envelope rather than pooling.

Over the membrane we want a pedestal paver system (or, alternatively, a raised composite decking system on sleepers) that allows drainage to flow freely underneath while providing a level, walkable surface. A code-compliant guardrail or railing system needs to be installed around the full perimeter for fall protection, matching the exterior finish of the building where possible. Drainage planning is critical — the contractor should confirm slope toward existing roof drains or scuppers and avoid creating dead zones where water could sit against the membrane.

We would like a full written proposal covering the load assessment findings, membrane product and warranty, paver or decking material options, railing specification, drainage plan, and a realistic project timeline from permitting through final walkthrough. Please include references from at least two prior rooftop deck projects with waterproofing scope, proof of insurance, and any required roofing or waterproofing certifications. We are ready to move forward with a qualified crew as soon as the proposal and timeline are approved.