A damaged roof doesn't wait for a convenient time, and neither do we. Big Toms Roofing keeps trucks staged around Derwood so a certified roofer can be looking at your roof within hours, not days, with a straight-talk estimate before any work starts.
Big Toms Roofing has spent years building a reputation in Derwood for doing Flat Roof Repair the right way — proper permits, manufacturer-approved materials, and a crew lead on-site for every job, not just a subcontractor nobody vetted.
From a single missing shingle to a full tear-off, our Derwood crews handle every stage of roofing work with the same attention to detail — licensed, permitted, and cleaned up when we leave.
A leak that starts as a small stain can rot decking and framing within weeks. Our emergency response teams treat every active-leak call in Derwood as urgent — temporary stabilization first, permanent fix scheduled right behind it.
Whether your roof is past its expected lifespan or storm damage made repair impractical, our replacement crews handle permitting, disposal, and installation start to finish, with a written timeline you can plan around.
Commercial roofs fail differently than residential ones — ponding water, seam separation, and membrane wear don't always show up until there's a leak on the sales floor below. Our Derwood commercial division services TPO, EPDM, modified bitumen, and built-up roofing systems on retail, industrial, and multi-family properties.
A lot of roof failures are preventable with a twice-a-year inspection catching lifted flashing or worn pipe boots before they turn into interior water damage. Our Derwood inspection service checks the field, flashing, penetrations, gutters, and attic ventilation, then hands you a written report with photos.
Poor attic ventilation cooks shingles from underneath and can void manufacturer warranties. Our Derwood crews balance intake and exhaust ventilation to extend the life of your Flat Roof Repair system and lower attic temperatures in summer.
We're not trying to be the biggest Flat Roof Repair company in Derwood, MD — we're trying to be the one you'd actually recommend to your neighbor.
Every estimate is itemized and handed to you before we touch the roof — no verbal quotes that change once the ladder comes down.
Because our trucks stay staged around Derwood, we're rarely more than an hour from your address for emergency calls.
Certification isn't a marketing badge here — it's required training that affects how your warranty is honored.
Every completed job comes with a written workmanship warranty separate from the manufacturer's material warranty.
We document damage the way adjusters expect to see it, which shortens the back-and-forth on storm claims.
Magnetic nail sweeps and tarp-protected landscaping are standard on every job, not an upsell.
We don't cherry-pick these — they're representative of the calls, texts, and reviews we get after most Flat Roof Repair jobs in Derwood.
"We had a leak show up during a storm at night and I honestly didn't expect anyone to answer the phone. Big Toms Roofing had a crew tarping our roof within a couple hours and came back two days later to do the real repair. Can't recommend them enough."
"The estimate they gave us matched the final invoice exactly, which after two other quotes from companies that kept adding line items, was a relief. Crew was professional and cleaned up better than I expected."
"After the hail storm last year, Big Toms Roofing documented everything for our claim and dealt directly with our adjuster. We barely had to do anything except sign off on the estimate."
"As a property manager I've worked with a lot of roofing companies and Big Toms Roofing is one of the few that actually communicates before showing up and after the job's done."
"Bought a house in Derwood last year and had them do the pre-purchase inspection. Found flashing issues the seller ended up covering. Saved us thousands before we even closed."
Big Toms Roofing crews are staged to cover all of Derwood and the neighborhoods around it, from established residential streets to newer developments and commercial corridors.
We regularly work in the following Derwood-area zip codes: 20855
One call gets a licensed Derwood roofer looking at your problem, usually the same day, with a written estimate before anything starts.
📞 Call +1-855-469-0306 — Serving Derwood, MD
