Flat roof installation and replacement by JJ Landerman means precision and resilience against New England’s toughest weather. Trust in our commitment to quality and durability.





Setting the standard for excellence, our team expertly handles every aspect of commercial flat roof installation. Meticulous attention to detail and use of cutting-edge materials ensures your roofing is robust, energy-efficient, and tailored to withstand the Northeast's unique weather challenges.
Our comprehensive flat roof repair services address leaks, weather damage, and wear and tear with precision. By promptly diagnosing issues and implementing targeted solutions, we ensure the longevity and integrity of your commercial roofing.
When repairs are no longer sufficient, opt for our expert flat roof replacement services. We offer a seamless, stress-free transition to a new, state-of-the-art roofing system, thoughtfully designed to provide superior protection and long-lasting durability for years to come.
Choosing the right flat roof system is key to long-term performance. We guide you through top options like TPO, PVC, and EPDM, each offering distinct benefits in energy efficiency, durability, and weather resistance. Our expert consultations help match the best material to your building’s needs and budget.
Expertise shaping roofing for harsh Northeastern weather
Our woman-led team offers fresh, enduring roofing solutions
Precision in every project, meeting exacting Northeast standards
Roofers certified by industry leaders, ensuring superior quality
Solid guarantees to secure your roofing investment
Zero-cost roofing inspections and estimates, with regional expertise
Effortless navigation through insurance claims, specialized for local policies
Approachable payment plans, including interest-free options, for easy budgeting
Our solutions are crafted to withstand the severe snow of winter and the intense summer heat, ensuring each roof’s longevity.
Here’s a quick, high‑level rundown of how a flat roof is installed:
Prep & Decking: Remove old roofing down to a sound, sloped (1–2%) deck.
Repair or replace damaged decking.
Insulation & Underlayment: Fasten or adhere rigid insulation boards. Install a vapor barrier (if needed) and a layer of synthetic or felt underlayment.
Membrane Application:
Built‑Up (BUR): Hot‑mop alternating asphalt and felt layers, top with gravel.
Single‑Ply (EPDM/TPO/PVC): Roll out membrane, adhere or mechanically fasten, seal seams (tape or heat‑weld).
Modified Bitumen: Torch‑down or cold‑adhere pre‑manufactured sheets, roll seams.
Flashings & Drainage: Install metal drip edge or termination bars at perimeters. Flash around penetrations (vents, skylights) with boots or custom metal. Fit internal drains or scuppers, sealing their flanges to the membrane.
Inspection & Maintenance: Check seams, fasteners, and drains for gaps. Keep roof clear of debris and inspect yearly (or after storms).
Yes, you can install a flat roof yourself using a Peel and Stick system, which is ideal for beginners due to its simplicity and minimal tool requirements. This DIY approach can save you significant costs compared to professional installation. Be sure to follow step-by-step guides or tutorials to ensure proper installation.
The cheapest option for a flat roof is generally roll roofing due to its low material and installation costs. However, keep in mind that while it’s budget-friendly, its lifespan is shorter compared to other roofing materials. Regular maintenance can help prolong its durability, making it a practical choice for short-term solutions.





Step into a legacy of roofing excellence with JJ Landerman. Our team, leading with a century of skill and assurance, ensures your project is in capable hands. Take action today—reach out for your complimentary inspection and secure roofing that elevates your property’s safety and style.