Alif Construction - New York's Best Roofing Services

Proper moisture control installation creates a continuous barrier that manages air and vapor flow within your roof assembly. For common ventilation issues, this system works in tandem with attic vents to prevent warm, moist indoor air from condensing in the colder roof deck. By controlling where moisture can and cannot go, we prevent mold growth, wood rot, and insulation damage, which are often the hidden results of poor ventilation.

Absolutely. While granule loss exposes the asphalt to UV damage, the immediate threat is water intrusion through the compromised shingle layer. Our waterproofing repair focuses on sealing the vulnerable deck beneath the shingles. We apply reinforced membranes or coatings to create a secondary, watertight barrier. This repair buys critical time and protection for the roof structure, preventing leaks and interior damage until a full shingle replacement is feasible.

A simple fix often addresses just the visible leak point. Our waterproofing installation is a systemic solution. For rowhouses with shared walls and unique drainage challenges, we install a complete, seamless membrane system over the entire roof deck or foundation wall. This approach manages water at every potential entry point—not just where it's currently leaking—accounting for wind-driven rain, ice dams, and the settling common in NYC buildings. It's a long-term investment in the building's envelope.