John Contracting - Brooklyn's Top-Rated Roofing Services

These are very common problems in our Brooklyn neighborhoods due to aging materials and the coastal climate. For roof insulation moisture, we first perform a thorough inspection to find the source—often from compromised underlayment or inadequate ventilation. We then repair the leak at its origin and address any damaged insulation to prevent mold and energy loss. For chimney flashing leaks, a frequent issue in our brownstones and older homes, we carefully remove the old, failed flashing, prepare the masonry, and install new, code-compliant flashing integrated with a proper waterproofing layer (like Thoroseal) to create a durable, long-lasting seal that withstands our weather.

It's an important distinction. A moisture control repair is a targeted fix for an existing system that has failed, like sealing a specific crack in a foundation wall or replacing a section of damp insulation. Waterproofing installation, on the other hand, is a comprehensive, proactive application of a barrier system—such as a fluid-applied membrane or sheet system—to an entire surface like a basement wall or plaza deck to prevent water ingress from the start. We often recommend a full waterproofing installation for new additions or major renovations, while repairs are the solution for addressing a specific leak or point of failure in an older structure.

Absolutely. Protecting the structural integrity of stoops and porches is a specialty of ours, given how many we work on in Brooklyn. The key is addressing both the visible surface and the critical waterproofing layer beneath. Our process typically involves assessing the condition of the concrete or stone, making necessary repairs or replacements, and then applying a dedicated waterproofing membrane or coating system before the final finish (like tiles or stucco) is installed. This approach seals the structure from below, preventing water from undermining the foundation or causing interior damage, which is a common and costly issue we see in the area.