Metal roofing
Architectural shingles
Tile roofing
GAF
Owens Corning
Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Fast, Reliable Roof Repair Across Lake Mary
Most roof repairs in Lake Mary fall between $275 and $650 for leak fixes, flashing work, and shingle replacement, with larger repairs like valley rebuilds running $800 to $1,400. We typically get a technician to Lake Mary within 24 to 48 hours of your call. If you’re staring at a water stain on the ceiling in Heathrow or Timacuan, don’t wait. Call (850) 757-3564 and we’ll give you a written price before any work starts.

Lake Mary isn’t like coastal Florida. We’re inland, but the humidity still sits heavy all summer, and the afternoon thunderstorms roll through almost daily from June through September. That combination – intense UV, high humidity, and wind-driven rain – does specific things to roofs in master-planned communities like Heathrow, Timacuan, Magnolia Plantation, and the neighborhoods along Rinehart Road. We know exactly what to look for because we’ve been repairing those specific failure points for years.
Why Mercer Roofing Co Orlando Is Lake Mary’s Preferred Roof Repair Company
We built our Lake Mary reputation on one thing: you know exactly who’s coming to your door before they ring the bell. When you schedule a repair with us, you get the technician’s name and photo sent to you ahead of the visit. When they arrive, they’re in a clean, marked uniform, and they hand you a photo ID badge. No guessing. No stranger-at-the-door moment. That’s the Threshold Standard, and every Mercer technician is held to it – background-checked, identity-verified, and trained to treat your home like a place to be protected.
Our Roof Repair team has handled everything from granule loss on 1980s architectural shingles to wind-uplifted drip edges in Heathrow. We know what Seminole County building inspectors look for, and we know which shingle colors the HOAs in Timacuan and Heathrow have already approved. That local knowledge matters when a wrong color choice means redoing the repair at your expense.
Every repair we do in Lake Mary comes with a written guarantee for 365 days, and if the repair fails within that year, the second visit is free. The written price is provided before any work starts – no exceptions, no conditional pricing. And when you call (850) 757-3564, a live person answers. Not a voicemail, not a call-back form. A real human being, 24/7.
Styles & brands we work with






Commercial Roof Repair in Lake Mary
Commercial Roof Repair in Lake Mary usually means flat or low-slope membrane systems on office buildings along International Parkway, retail centers off Lake Mary Boulevard, and medical offices near the I-4 corridor. These roofs fail differently than residential shingle roofs. You’ll see membrane punctures from HVAC maintenance, ponding water near clogged drains, and seam failures from thermal expansion in the summer heat. A typical commercial repair in Lake Mary runs $600 to $2,200 depending on the membrane type and the size of the affected area.
Flat Roof Patch and Seam Work
Flat commercial roofs in Lake Mary take a beating from UV exposure and standing water after afternoon thunderstorms. We patch TPO, EPDM, and modified bitumen systems using manufacturer-specified materials, not generic sealants. If a seam has separated, we clean the lap, re-prime it, and weld it with heat where the membrane allows. That repair typically falls between $450 and $1,100.
Drainage and Flashing on Commercial Properties
Clogged scuppers and failed edge flashing are the two most common commercial callouts we see in Lake Mary. When water backs up at a parapet wall, it finds the fastener holes and seams. We replace corroded edge metal with galvanized or stainless steel, clear and re-seal the drainage path, and verify the repair holds through the next rain cycle. Expect $350 to $900 for drain and flashing work on a typical commercial footprint.
Roof Leak Repair in Lake Mary
Roof Leak Repair in Lake Mary usually starts with a water stain on the ceiling, damp drywall near a window, or a drip that shows up only during heavy afternoon storms. The leak source is rarely directly above the stain. Water travels along rafters and decking before it drops, which is why we trace the full path – from the visible stain back to the penetration, valley, or flashing that’s actually letting water in. Most residential leak repairs in Lake Mary run $300 to $700, depending on what we find when we open the area up.
Valley and Flashing Leaks
Original galvanized flashing on 1990s Lake Mary homes corrodes from years of humidity and thermal cycling. When metal flashing corrodes, it develops pinholes and separation at the seams. We replace the flashing with new metal – stainless steel at the eave and valley transitions – and re-seal the surrounding shingles. Expect $275 to $600 for most flashing repairs.

Penetration and Vent Boot Leaks
In Lake Mary’s heat, rubber vent boots bake and crack within five to eight years. A cracked boot lets water run straight down the pipe into your attic. We replace the boot with a new one, seal it properly, and check the surrounding shingles for granule loss while we’re up there. Vent boot replacement runs $225 to $450 per penetration, and it’s one of the cheapest repairs you can make to avoid a much bigger problem later.
Trusted Brands We Service in Lake Mary
We install and repair GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral products, and we stock common repair materials locally so a Lake Mary job doesn’t wait on a warehouse shipment. In practice, most repairs in Lake Mary’s HOA communities mean matching an existing GAF Timberline or CertainTeed Landmark profile and color. We keep the most common architectural shingle colors on hand for fast matching. If your shingle has been discontinued, we can usually identify a current-manufacturer match that satisfies HOA requirements, and we’ll document the comparison so your architectural review has what it needs.
Common Roof Repair Problems We See in Lake Mary Homes
- Premature granule loss on 1980s-2000s shingles. Lake Mary’s summer UV index routinely exceeds 10, which bakes the asphalt and releases granules years before the shingle actually fails. You’ll see granules in the gutters or a bald, shiny look on sun-facing slopes. That’s UV deterioration, not a manufacturing defect.
- Wind-driven rain at valleys and penetrations. Daily thunderstorms in July and August push rain sideways into roof valleys and around vent pipes. The original galvanized flashing from a 1990s build has usually corroded enough by now that water finds a way through.
- HOA-mandated reroofing pressure. Communities like Heathrow and Timacuan run coordinated reroofing cycles, which means many homeowners face a repair decision while their neighbors are doing full replacements. Some accept cheap sealants or inferior fasteners to save a few dollars. Those fail within five years. We recommend the spec that matches the neighborhood’s long-term standard, because the cheap fix costs more within a decade.
- Lifted drip edges and starter strips. Wind uplift on the edges of roofs is common in Lake Mary’s thunderstorm downdrafts. The starter strip and first course of shingles lift off the decking, exposing the underlayment to rain. We re-secure the edge with stainless fasteners and replace damaged decking at the eave, then re-install the starter course properly.
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AfterPricing for Roof Repair in Lake Mary, FL
A typical residential Roof Repair in Lake Mary ranges from $275 for a simple vent boot replacement to $1,400 for a valley rebuild or multiple flashing replacements. Most leak repairs land between $350 and $700. Flat roof patches on commercial properties run $600 to $2,200 depending on the membrane and the area involved. Shingle color matching, HOA-required documentation, and specialized stainless fasteners can add to material costs, but those line items appear in your written price before work begins. You’ll know exactly what the repair costs, in writing, before we lift a hammer. Call (850) 757-3564 to schedule your free estimate.
We Also Serve Cities Near Lake Mary
Our crews serve Lake Mary and the surrounding communities, including Sanford, Oviedo, Goldenrod, and Orange City. If you’re just outside the city limits or in a nearby unincorporated Seminole County neighborhood, call us – we can usually add your stop to the same route without delay.
Serving Lake Mary, FL - Our Local Coverage Area
We’re based in the Lake Mary area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Roof Repair in Lake Mary
In most Lake Mary communities – particularly Heathrow, Timacuan, and Magnolia Plantation – yes, you do. Even a small shingle replacement must match the HOA’s approved color palette and material standards. The architectural review process can take a few days to a few weeks depending on the association. We help by documenting the exact product, color code, and fastener spec in our written quote, so your submittal is complete the first time. We’ve seen repairs rejected because the contractor used a “close enough” shingle color. Call (850) 757-3564 and we’ll make sure the spec meets your HOA’s standards before any work starts.
Lake Mary’s humid subtropical climate combines intense summer heat, daily thunderstorms, and occasional hurricane-force wind gusts. That combination causes thermal cycling – the roof decking and shingles expand and contract daily – which weakens sealant bonds and loosens fasteners. Wind-driven rain then penetrates at corroded flashing points. Most leaks we trace are at valleys, pipe penetrations, and eaves where the original 1990s flashing has failed. If you have a leak, call (850) 757-3564 for a precise assessment and a written price.
Granule loss depends on sun exposure, roof slope, and shingle age. A south- or west-facing slope in Lake Mary receives six to eight hours of direct UV daily from May through September, which accelerates asphalt degradation. Slopes with less exposure lose granules more slowly. If your roof was installed in the 1980s or 1990s, the original architectural shingles are at or beyond their design life regardless of granule retention. The best move is a Roof Installation - Lake Mary or targeted replacement before the loss becomes a leak. Call (850) 757-3564 and we’ll assess the specific slope and age before recommending anything.
Put the quotes side by side and check four things: the specific shingle brand and color named (not “architectural shingle” but “CertainTeed Landmark, Moire Black”), the fastener type and material (stainless vs. galvanized), the warranty length in writing (ours is 365 days, with a free second visit if the repair fails), and whether the price is guaranteed in writing before work starts. A quote that’s $100 cheaper but uses galvanized fasteners on a Florida roof costs more within five years when corrosion fails. We give you the full spec in the written quote. Call (850) 757-3564 and you’ll see what we mean.
Usually, yes. Manufacturers update their color lines repeatedly, but most discontinued shades have a current equivalent in the same product family or a close match from another brand. In Lake Mary’s HOA communities, the match needs to satisfy the architectural review board, not just look similar from the street. We document the original shingle, identify the closest current match, and provide the product code and a sample for your HOA submittal. If the HOA requires an exact match and it exists, we source it. Call (850) 757-3564 to discuss your specific shingle.
Contact Mercer Roofing Co Orlando for Roof Repair in Lake Mary
When a roof leak shows up in Heathrow, Timacuan, or anywhere else in Lake Mary, you want someone who knows the local HOA rules, the local building codes, and the specific ways Lake Mary’s climate damages roofs. You also want to know exactly who’s at your door. We send you the technician’s name and photo before the visit. They arrive in a marked uniform, they hand you a photo ID badge, and they give you a written price before any work begins. Every repair carries a 365-day written guarantee. Call (850) 757-3564 to schedule your free estimate, or to talk through what you’re seeing on your roof right now.
Written by Grant Whitlock, Owner at Mercer Roofing Co Orlando, serving Lake Mary and the surrounding Seminole County communities.