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IKO Home Additions & ADU: The Fort Lauderdale Owner’s Guide
Planning an IKO-spec home addition or ADU in Fort Lauderdale typically runs $45,000 – $130,000 for the addition itself, with detached ADU construction landing between $90,000 – $220,000 depending on square footage, foundation type, and finish level. Most Fort Lauderdale homeowners reach out to us after discovering their existing project was quoted without Fort Lauderdale-specific requirements baked in: wind-load ratings, FEMA elevation considerations, or Hurricane Andrew-era code changes that affect how an addition ties into the original structure. We’ll tell you what’s actually involved, what it costs, and what we’d do differently from whoever was there before us.
Mason Remodeling Co Fort Lauderdale is an independent contractor. We’re not affiliated with IKO, but we’ve built additions and ADUs using IKO roofing and structural products across South Florida neighborhoods from Victoria Park to Rio Vista. Isaac Pruett, our owner, has spent the better part of two decades doing remodeling work in Fort Lauderdale, and he’s the first to tell you that an addition in this city is not the same animal as one in, say, Orlando. Wind code drives almost every decision.
Which IKO Home Addition and ADU Setups This Applies To
If your Fort Lauderdale addition or ADU was roofed with IKO shingles or uses IKO’s underlayment and flashing components, compatibility comes down to two things: the product line and the original install date. IKO’s Cambridge, Dynasty, and Nordic lines each have specific underlayment and starter-strip pairings, and mixing them with off-brand flashing or wrong-spec fasteners is where we see problems start. The biggest compatibility gotcha we run into in Fort Lauderdale: installers using standard roofing nails instead of IKO’s specified ring-shank fasteners for high-wind zones, which also happens to be every jurisdiction in Broward County.
OEM versus aftermarket matters less for structural framing than it does for the roof assembly itself. IKO’s proprietary underlayments are engineered to work with their shingle adhesive strips in high heat and humidity. A generic underlayment works until it doesn’t, and in Fort Lauderdale the “doesn’t” usually shows up after one bad storm season. We stock IKO-specific flashing and fasteners on the truck, and for aftermarket equivalents we only use products that match or exceed the IKO wind rating rather than just the price point.
How to identify what you have: check the permit packet from the original build, look for IKO packaging remnants in the attic or garage, or snap a photo of the shingle edge and send it to us. The granule pattern and edge profile are usually enough to identify the line.
Styles & brands we work with
Signs Your IKO Home Additions & ADU Is Failing
Most failures show up as water first, structure second. Here’s what we actually see in Fort Lauderdale, in the order homeowners usually notice it:
- Water staining at the addition’s tie-in point. This is the seam where new framing meets original exterior wall. If the flashing was adapted rather than replaced, or the step flashing doesn’t extend past the roof-to-wall junction the way IKO’s installation specs require, water gets in during the summer’s sideways rain.
- Granule loss on the roof within the first three years. IKO shingles shed some granules during break-in, but heavy bald patches in three years or less usually mean improper nail placement or a too-shallow roof deck. In Fort Lauderdale’s heat, that accelerates shingle failure in a hurry.
- Ceiling cracks at the addition’s drywall seams. This is often framed as “normal settling” but in South Florida’s sandy, shifting soil it can indicate undersized footings or a slab that was poured without accounting for the water table in neighborhoods like Sailboat Bend.
- Windows or doors in the addition that stick seasonally. Wood framing expands and contracts with humidity, but if a French door only opens in January you may have a foundation or header issue, not a humidity issue.
- ADU HVAC that can’t keep up in August. An undersized unit or missing duct sealing in an unconditioned attic space overworks the system. We trace most ADU comfort complaints back to shortcut insulation rather than the equipment itself.
See the difference
Before
After
Before
After
Before
AfterReplacement Cost & What’s Included
A full home addition in Fort Lauderdale, built to current code and tied into your existing IKO-spec roof, runs $45,000 to $130,000. A detached ADU with its own foundation, electrical service, plumbing, and IKO-roofed assembly runs $90,000 to $220,000. The spread comes down to square footage, the condition of what you’re tying into, and whether the existing roof has to be partially removed to make the connection right.
| Project Type | Fort Lauderdale Price Range |
|---|---|
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
| Garage Conversion (to living space) | $30,000 – $80,000 |
Our written price includes the framing, the roof assembly using IKO-compatible materials at proper wind ratings, the electrical rough-in, the plumbing rough-in, and the drywall. What you see in writing is what you pay. If any change is needed mid-project due to something we find behind the drywall, you get a written change order with the new price before we proceed. Our 365-Day Done Right Promise covers everything we build for a full year from completion, with a free return visit if anything we installed fails.
DIY or Call Us?
If you’re diagnosing issues on an existing addition, you can safely check for visible water staining, inspect attic insulation depth, and look for daylight peeking through at the tie-in seam. That last one you can do from inside the attic with a flashlight. But structural framing, roof tie-ins, and anything involving electrical or gas is not DIY territory, and that remains true regardless of which YouTube video you watched at 1 a.m. We’ve cleaned up after enough “weekend structural repairs” to say this without hesitation: an addition that’s drifting from its original plane is a problem for someone who carries the right insurance and knows how to shore temporarily before cutting anything.
We tell you what we found, what it takes to fix it, and what it will cost, before we touch a thing. Call (754) 354-3720 for a straight answer.
FAQs
With proper wind-rated install and IKO-compatible underlayment, expect 20 to 25 years from the roof assembly in Fort Lauderdale’s heat and hurricane exposure before real replacement becomes necessary. Poor installs cut that lifespan in half, which is why we pull permits and get inspections. Call (754) 354-3720 for a condition assessment on your existing addition.
In most cases, yes. Failed flashing gets remediated, undersized footers get supplemented, and failing roof-to-wall seams get re-worked without rebuilding the entire structure. There are exceptions, like an ADU slab with significant settlement, but those are less common than contractors who’d rather sell you a rebuild. Call (754) 354-3720 and we’ll give you the honest version before quoting anything.
A standard room addition runs 12 to 20 weeks depending on permit wait times with the City of Fort Lauderdale, which can stretch to 8 weeks alone during busy periods. ADUs run longer due to separate utility service. We’ll give you a realistic timeline in writing with your price, and we’ll tell you if the city’s permitting backlog changes it.
We keep IKO flashing, starter strips, and fasteners on hand in our Fort Lauderdale trucks, plus we have working relationships with local suppliers carrying KraftMaid cabinetry, Cambria and Silestone surfaces for the interior finish work. Full shingle orders go through our supply partners, and we’ll give you a material arrival date before work starts rather than after.
Call Mason Remodeling Co Fort Lauderdale at (754) 354-3720 to schedule your free estimate. You’ll get a written price, a written guarantee, and a straight answer on what your IKO home addition or ADU actually needs.
Written by Isaac Pruett, Owner, Mason Remodeling Co Fort Lauderdale at Mason Remodeling Co Fort Lauderdale, serving Fort Lauderdale and nearby areas.
