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Tamko Home Additions & ADU: The Fort Lauderdale Owner’s Guide
Home additions and ADUs built with Tamko product lines in Fort Lauderdale typically run $45,000 to $130,000 installed, depending on square footage, foundation work, and whether you’re adding a bedroom suite or a full accessory dwelling unit with its own kitchen and bath. Most Tamko-related structural components fail in ways that show up slowly: a roofline that starts to sag, flashing that separates at the connection point between old and new framing, or moisture intrusion where the addition ties into the original structure. You’ll usually notice water staining on interior drywall first, then a musty smell that doesn’t go away, then the frustrating realization that whoever tied the addition in didn’t account for Florida’s rain loading and humidity cycles. We walk Fort Lauderdale properties every week where a failed transition detail between the original home and an addition is the root cause, and it’s almost always fixable when caught early.
Which Tamko Models This Applies To
Tamko’s product line that matters for additions and ADUs centers on their structural sheathing, underlayment, and water-resistive barrier materials, not a single “addition kit.” The compatibility question is always about which Tamko products were used in the original build and what’s compatible when you tie new framing into old. If your existing roof has Tamko underlayment installed under the shingles, the transition between the old roof plane and the new addition’s roof needs the same or better-rated product, and getting that wrong is how you end up with leaks at the most expensive intersection on the property. The easiest way to identify what you have is to look at any leftover material documentation from the original build, or to check the exposed underlayment inside the attic at the eaves where the product face might still be visible. As an independent service provider, Mason Remodeling Co Fort Lauderdale is not affiliated with Tamko, but we work with their product lines regularly and know where the failures show up. OEM Tamko material is the safe call when you’re matching existing coverage; quality aftermarket equivalents sometimes save three to eight percent, but we rarely recommend them for tie-in work because the compatibility margin is too thin.
Styles & brands we work with
Signs Your Tamko Home Additions & ADU Is Failing
- Water staining along the ceiling where the addition connects to the original home. This is almost always a failed transition flashing or underlayment seam. The tie-in point is where differential settling pulls materials apart, and once water finds that gap, it keeps finding it.
- A visible sag or dip in the roofline over the addition. Trusses or rafters that were undersized for the span, or sheathing that’s lost structural integrity from repeated moisture cycles, will read as a soft spot from the street. Florida’s afternoon thunderstorms expose this faster than almost any other climate.
- Musty odor inside the ADU that returns after cleaning. Once moisture has gotten behind drywall, the smell comes back because the source hasn’t been addressed. We’ve opened walls in Victoria Park where the insulation behind the vapor barrier was carrying mold for years before anyone connected the smell to the structure.
- Doors or windows in the addition that have started to stick or won’t latch. This is differential settling or a foundation issue under the new square footage. It’s not the door’s fault; the frame is moving.
- Cracks at the inside corner where addition walls meet original walls. A hairline crack is normal settlement. A crack wider than about an eighth of an inch that keeps growing is a structural connection failing, and it’s the sign to call before the repair cost doubles.
Replacement Cost & What’s Included
In Fort Lauderdale, you should budget $45,000 to $130,000 for a full home addition, and $90,000 to $220,000 for an ADU construction project, depending on whether you’re adding a single room or a self-contained unit with a kitchen and bath. The cost spread comes down to four things: the condition of the existing foundation tie-in, the roof system’s current state, whether you need impact-rated windows and doors, and what’s hiding behind the walls once we open them. Every Mason Remodeling Co Fort Lauderdale project gets a written price before any work starts, and that price includes materials, labor, permits pulled, and a written guarantee covering the work for 365 days from the completion date. We don’t hand you a verbal estimate and then find “unexpected conditions” that triple the invoice. Isaac Pruett has opened enough Florida additions to know what’s usually back there, and we price for it up front.
See the difference
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AfterDIY or Call Us?
There’s almost nothing on a failed addition or ADU tie-in that we’d tell a homeowner to fix themselves, and that’s not gatekeeping. The failure points on these projects involve roof planes, structural connections, and water-resistive barriers, and a botched repair means water keeps entering a space where your family sleeps. What you can safely do is document: photograph the staining, mark the cracks with a pencil and date so you can track whether they’re still moving, and keep an eye on the obvious signs while you schedule an inspection. Getting up on a steep Florida roof to peel back flashing yourself is how people end up in urgent care. Call (754) 354-3720 and we’ll come look at it, tell you what we found, what it takes to fix it, and what it will cost, before we touch a thing.
FAQs
The structure itself should last 50 to 100 years with proper maintenance, but the failure-prone connection points and moisture barriers typically need real attention every 15 to 25 years in Florida’s humid, storm-heavy climate. The original build quality, the foundation work, and whether the roof tie-in was done correctly matter more than the product brand. Call (754) 354-3720 for an inspection if your addition is past the 15-year mark and you’ve never had the connection points checked.
Yes, in most cases we can repair the failing tie-in, replace the compromised underlayment or flashing, and restore water-tightness without tearing down the addition, as long as the underlying framing is still sound. The decision comes down to what we find when we open the affected area. Estimates are free.
A focused tie-in repair typically takes three to seven working days depending on the scope of damage and whether we’re pulling permits. A full addition or ADU build runs eight to sixteen weeks from permit approval to final inspection. We’ll put the timeline in writing with your price.
We keep the most common Tamko-compatible underlayment, flashing, and transition materials on our trucks for inspection and emergency repair calls across Fort Lauderdale, and larger material orders arrive within days through our supplier network. We’ll confirm exact availability when we know what your project needs. Call (754) 354-3720 to schedule a free estimate.
Contact Mason Remodeling Co Fort Lauderdale
If your Tamko addition or ADU is showing signs of trouble, or you’re planning new square footage and want it done right the first time, call Isaac Pruett and the team at Mason Remodeling Co Fort Lauderdale at (754) 354-3720. We’ll walk the property, give you a written price before any work starts, and back the finished job with our 365-Day Done Right Promise. A live person answers, day or night.
Written by Isaac Pruett, Owner, Mason Remodeling Co Fort Lauderdale at Mason Remodeling Co Fort Lauderdale, serving Fort Lauderdale and nearby areas.
