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GAF Home Additions & ADU: The Orlando Owner’s Guide
If you’re planning a home addition or ADU on a property with GAF roofing installed, the work typically lands between $45,000 and $130,000 in Orlando, depending on square footage, foundation work, and how much of the existing roof system has to be tied into. We handle GAF-integrated additions and ADU builds from first permit to final inspection, and we’ll give you a written price before any work starts. Most owners discover this isn’t a simple contractor call when they realize the new roofline has to tie into the existing GAF system correctly, or the addition triggers a full roof section replacement to keep the warranty intact.
Which GAF Models This Applies To
If your Orlando home carries GAF Timberline HDZ, Timberline UHDZ, or Camelot II shingles, the addition’s roof section generally needs to match the existing product line to keep a uniform warranty profile and clean look. GAF’s system warranty approach means mixing a different shingle line mid-roof can void portions of coverage, so matching matters more than most homeowners expect. We’ve also handled tie-ins on older GAF Timberline Natural Shadow and Royal Sovereign roofs where the exact colorway is discontinued, which forces a full re-roof decision rather than a patch. The practical rule: check the bundle wrapper or the original install paperwork for the exact shingle name and color code before anyone prices the roof portion of your addition. If you don’t have it, we’ll pull a shingle sample from an inconspicuous spot and match it through GAF’s current catalog.
Styles & brands we work with
Signs Your GAF Home Additions & ADU Is Failing
- Water stains where the new roofline meets the old one. This usually means the flashing detail between the addition roof and the existing GAF section was underbuilt or sealed incorrectly. Florida’s afternoon downpours find that seam fast.
- Granules collecting in your gutters within the first two years. New shingles shed some granules, but heavy loss on a recent addition often means the roof deck wasn’t prepped flat enough or the shingles were installed outside GAF’s temperature window.
- The addition roofline sags slightly at the ridge. That’s a structural concern, not a shingle issue. It happens when the truss or rafter spec didn’t account for Orlando’s wind load, and it needs a contractor who understands local code before it gets worse.
- Uneven shingle color fading between old and new sections. Even when the same GAF shingle is used, the new section ages differently. If it’s fading far faster, the ventilation in the addition’s attic is likely undersized, trapping Orlando heat and cooking the shingles from below.
- Loose or lifted shingles after routine summer storms. GAF products hold up well when installed right, but if the nails missed the nail line or the starter course was skipped, the first strong gust will show it.
See the difference
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After
Before
After
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AfterReplacement Cost & What’s Included
For an Orlando home addition or ADU with GAF roof integration, the $45,000 to $130,000 range covers the full scope: foundation, framing, electrical, plumbing, insulation, drywall, and the roof tie-in work. Smaller bump-outs or single-room additions sit at the lower end; a full ADU with kitchen and bath pushes toward and past $90,000, with luxury ADUs reaching $220,000. What drives the price most is whether the existing GAF roof section needs to be partially removed and re-flashed, a step many bids leave out until the job is underway. We put that in writing up front. You’ll also see our labor warranty terms stated plainly: 365 days from the completion date, covering workmanship on every trade we touch, with a free return visit if something fails.
DIY or Call Us?
You can safely handle the planning homework: measuring your lot setback lines, checking Orlando’s ADU size limits for your zoning district, and pulling your original GAF roof paperwork. You cannot safely frame a roof tie-in, run new electrical, or flash a roofline seam. Those are the points where we see the most expensive DIY mistakes, and roof-related falls remain one of the most common serious injuries in home construction. If you’re in Baldwin Park, College Park, or anywhere in the Orlando metro and the roofline on your addition isn’t shedding water cleanly, call us at (850) 920-7745. We’ll come look, tell you what’s actually wrong, and put the fix in writing.
FAQs
Most additions take 8 to 16 weeks from permit approval to final inspection, with ADUs running 4 to 6 months depending on utility connections and site prep. Orlando’s permitting office moves at its own pace, so we build that buffer into your timeline upfront. Call (850) 920-7745 and we’ll walk you through a realistic schedule for your specific lot.
Often yes, if the shingles are less than 10 years old and the failure is isolated to flashing, underlayment, or a single vent. We’ll match the shingle and color as closely as GAF’s current catalog allows, and we’ll tell you honestly if a patch will look obvious from the street. Call us at (850) 920-7745 for a free estimate on the repair before you commit to a full re-roof.
We keep GAF Timberline HDZ in the most common Orlando colorways, plus starter strips, ridge caps, and WeatherBlocker underlayment stocked on our vehicles for same-day roof repairs and addition tie-ins. Less common lines like Camelot II are ordered per job, which adds 3 to 5 business days. Call (850) 920-7745 with your shingle line and color and we’ll confirm what’s in stock.
No, not unless you change the scope. We deliver a written price before any work begins, and that number holds through the project unless we uncover something structural that was impossible to see during the estimate, and even then, you approve any adjustment in writing before we proceed. That’s the standard on every job, from a small bathroom remodel to a full ADU. Call (850) 920-7745 to schedule your free estimate and get your project priced.
We’re an independent Orlando contractor, not affiliated with GAF, but we install and integrate their roofing products on additions and ADUs throughout the metro area. We also stock materials from KraftMaid, Cambria, and Silestone when your addition includes a kitchen or bath. Tell me what the problem is. We’ll figure out the rest from there.
Written by Isaac Pruett, Owner, Mason Remodeling Co Orlando at Mason Remodeling Co Orlando, serving Orlando and nearby areas.
