Roofing You Can Rely On

Commercial Flat Roof Repair

Experienced Flat Roof Repairs for Long-Lasting Results

Commercial Flat Roof Repair in New York.

Flat roofs are common in commercial buildings because they’re cost-effective and provide extra space for essential equipment like HVAC systems. Due to their rubber and plastic hybrid membranes (roof material), they can face issues like leaks, pooling water, and membrane damage.

At Dr. Roof and Waterproof, we specialize in commercial and industrial flat roof repairs including fixing leaks, improving drainage, repairing or replacing damaged membranes, and roof flashing. Flat roof repair is a very specific type of repair service that requires seasoned professionals. Call Dr. Roof and Waterproof today!

Choose Dr. Roof and Waterproof for flat roof repair:

  • 10 Years of Expertise
  • Knowledge in Both Roofing and Waterproofing
  • 24/7 Emergency Repairs
  • Same-Day Roof Fixes
  • Local Roofing Knowledge
  • Reliable & Fast Service
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Commercial Flat Roof Repair by Dr. Roof & Waterproof

At Dr. Roof and Waterproof, we excel in commercial flat roof repair in New York, thanks to our unique blend of roofing and waterproofing expertise. Our deep understanding of insulation and craftsmanship ensures that your roof isn’t just fixed, but protected against future issues. We use top-quality materials and techniques to deliver lasting results, making us your trusted partner for all your flat roofing needs.


To stop a leak in a flat roof, start by identifying the source of the leak. Once located, clean the area around the leak and apply roofing cement or a patch specifically designed for flat roofs. It’s important to ensure the patch adheres well and covers the damaged area completely. While these steps can provide a temporary fix, it’s recommended to seek professional help for a thorough and lasting repair.

Finding a leak in a flat roof requires careful inspection. Start by looking for water stains or discoloration on the ceiling inside the building, these indicate the general area of the leak. On the roof, check for visible damage such as cracks, blisters, or punctures in the material. Also, inspect around roof penetrations like vents, skylights, and flashing for gaps or deterioration. If the source of the leak is not obvious, using a hose to spray small sections of the roof and checking for leaks inside can help pinpoint the exact location. For thorough and accurate detection, consider hiring a roofing professional.

The best way to repair a flat roof DIY involves these key steps:

  1. Inspection and Identification: Thoroughly inspect the roof to find all areas of damage, including cracks, blisters, ponding water, and damaged flashing. Check inside the building for water stains to help locate leaks.

  2. Clean the Roof Surface: Remove debris and dirt from the roof to ensure repair materials adhere properly.

  3. Patch Small Holes and Cracks: Use roofing cement and a patch for minor damage. Apply cement, press the patch over it, and seal the edges with more cement.

  4. Repair Blisters and Bubbles: Cut an “X” in the blister, let it dry, apply roofing cement, press down the flaps, and cover with a patch.

  5. Address Larger Damage: For extensive damage, apply a new layer of roofing material like modified bitumen or a new membrane for EPDM, TPO, or PVC roofs. Ensure proper sealing and overlap with the existing roof.

  6. Reinforce Flashing and Seams: Check and reinforce or replace flashing around edges, vents, and skylights. Seal all seams with roof sealant.

  7. Ensure Proper Drainage: Make sure the roof drains properly by clearing blockages and ensuring the roof slopes towards drainage points.

Feature Flat Roofs Shingle Roofs
Cost-Effective Installation Generally cheaper and quicker to install Typically more expensive and time-consuming
Space Utilization Can be used for gardens, patios, HVAC, solar Limited additional space use
Aesthetics Sleek, modern look Traditional, varied styles
Easy Access Easier and safer to walk on for maintenance More challenging to access
Efficiency Better energy efficiency with proper insulation Varies with materials and installation
Drainage Issues Prone to water pooling if not well-designed Effective water runoff with sloped design
Lifespan Shorter lifespan, frequent repairs needed Longer lifespan with proper maintenance
Climate Suitability Less ideal for heavy snow/rain areas Adaptable to various weather conditions
I’m impressed with the comprehensive roof maintenance program offered by Dr. Roof and Waterproof. They’ve helped extend the life of my roof with their meticulous inspections and maintenance services. It’s a five-star experience every time!
Carlos G
The waterproofing service provided by Dr. Roof and Waterproof for our Queens estate was top-notch. Their team was knowledgeable, courteous, and the results speak for themselves. No more leaks, just flawless, professional work.
Sophia R
Running a business in Brooklyn means dealing with the elements, and Dr. Roof and Waterproof has been our go-to for all our commercial roofing needs. Their swift response and exceptional work have kept our operations smooth, rain or shine.
Michael T

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