Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Owens Corning Home Additions & ADU: The Fort Lauderdale Owner’s Guide
If you’re planning a home addition or ADU in Fort Lauderdale that specifies Owens Corning insulation or exterior products, we’ll handle the full build with materials matched to your spec, and you’ll get a written price before any work starts. Full home additions in Fort Lauderdale typically run $45,000 – $130,000 depending on square footage, foundation work, and whether we’re tying into existing systems or running new lines. ADU construction runs $90,000 – $220,000, and that’s the honest range whether you’re building a backyard cottage in Victoria Park or converting a garage in Sailboat Bend. We’re an independent Fort Lauderdale contractor, not affiliated with Owens Corning, but we install their products correctly and stand behind the build with our 365-Day Done Right Promise.
Key Takeaways:
- Written price before any work starts, and the invoice matches the approved number
- Owens Corning insulation and exterior products sourced through authorized channels, not gray-market stock
- Background-checked crew, live arrival tracking, and photo updates on every Fort Lauderdale job
- 365-Day Done Right Promise: if it’s not done right, we make it right, in writing
Which Owens Corning Products This Applies To
Owens Corning makes a few things that go into nearly every Fort Lauderdale addition or ADU we frame. The big one is insulation: EcoTouch and Thermafiber batts, plus their pink and black foam boards. The gotcha most owners run into is R-value matching for Florida code. Fort Lauderdale is Climate Zone 1 under the Florida Building Code, which means attic insulation needs R-30 minimum in most scenarios, and walls typically R-13. If a previous contractor stuffed R-19 in a 2×4 wall cavity, you’ve got compressed batts that aren’t giving you what the label says. We see that constantly in older Fort Lauderdale homes, especially the 1950s bungalows near Riverside Park.
For additions and ADUs specifically, Owens Corning’s FOAMULAR rigid board gets spec’d for exterior sheathing under stucco, which is the dominant finish here. The compatibility detail that matters: FOAMULAR comes in ½”, ¾”, 1″, 1½”, and 2″ thicknesses, and the thickness changes your wall assembly. A 1″ board plus a 2×4 wall plus drywall lands you around R-19.5 effective, which clears code. Skip the board entirely and you’ll fail blower door testing during the insulation inspection. We’ve had to open up walls on a few Fort Lauderdale ADU projects where a cheap bid skipped the foam and the energy audit caught it.
OEM Owens Corning product versus quality aftermarket equivalents is less of an issue on the build side than it is on replacement parts later. If you’re adding onto an existing Fort Lauderdale home that already has Owens Corning insulation, matching the existing product keeps your thermal envelope consistent. Mixing fiberglass batt brands in the same cavity is fine, but mixing batt and spray foam isn’t, not without an experienced hand to prevent condensation points. That’s the kind of thing Luca Romano watches for on every Fort Lauderdale addition, because a moisture problem in Florida doesn’t stay silent for long.
Styles & brands we work with
Signs Your Owens Corning Insulation or Pre-Existing Additions Are Failing
- One room is always 8-10 degrees hotter than the rest of the house. That’s almost always an insulation void or compressed batt above that room. In Fort Lauderdale’s August heat, the difference gets obvious fast.
- Your energy bill jumped without adding square footage. Degraded or wet insulation stops resisting heat transfer. A 30% spike month-over-month in summer usually points to failing thermal barrier.
- You can see daylight or feel drafts at wall-to-ceiling joints. The addition wasn’t sealed properly at the top plate. Air leakage blows right past insulation, no matter what brand is up there.
- Mold or mildew on ceiling drywall. In Fort Lauderdale’s humidity, a missing vapor barrier or wrong insulation assembly creates condensation inside the wall cavity. By the time you see staining, the cavity is already damp.
- Rodent or pest activity in the attic. Critters tear through fiberglass batts and leave voids. Owens Corning products are good, but they’re not chew-proof. We’ve pulled squirrel-chewed EcoTouch out of attics in Rio Vista more times than we can count.
See the difference
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AfterReplacement Cost & What’s Included
For a full home addition in Fort Lauderdale, you’re looking at $45,000 – $130,000. That includes all framing lumber, Owens Corning insulation, drywall, electrical rough-in, plumbing rough-in, HVAC tie-in, roofing, stucco or siding, windows, and interior finishes. What moves the number most is whether you’re building on a slab (cheaper) or a raised foundation with crawl space (more labor, more materials), and whether your existing electrical panel has spare capacity. An ADU in Fort Lauderdale runs $90,000 – $220,000 because it’s essentially a small house: its own meter, own water line, own sewer connection, own HVAC system. When Luca Romano quotes an ADU, he walks the lot, checks the utility tie-in points, and flags anything that’ll bite you before the number goes in writing.
We don’t do change orders unless you change the scope. The number on your written estimate is the number on your invoice. That’s the Relay Standard, and it’s been that way since 2005.
DIY or Call Us?
Insulation handling is something you can do yourself if you’re replacing a few batts in an accessible attic, but adding onto your home or building an ADU in Fort Lauderdale isn’t a weekend project. This is structural work, electrical work, plumbing work, and it requires permits from the city of Fort Lauderdale, inspections at multiple stages, and drawings that pass the Florida Building Code. When we say we pull permits and pass inspections, we mean every single one, not “eventually.” We’ve lost work to unpermitted cheap bids in Fort Lauderdale, and we’ve also been the second call after those projects stalled or got red-tagged.
If your existing Owens Corning insulation is wet or moldy, that’s a removal job, not a fluff-it-back-up job. Wet fiberglass loses its R-value and keeps breeding mold. Gloves, mask, bag it out, and let us re-insulate properly. For the actual build work, call (754) 354-7423 and get a written estimate from a Fort Lauderdale contractor who shows up when promised and answers his own phone.
FAQs
Owens Corning fiberglass insulation lasts 40+ years when it stays dry and isn’t disturbed by pests, but in Fort Lauderdale’s humidity, an improperly sealed cavity can compromise it within 5-10 years. The work either holds up or it doesn’t, we make sure it does. Call (754) 354-7423 for an attic inspection before you add on.
If the batts are dry and intact, we can top off thin spots or fill voids, but if there’s moisture or pest damage, patching won’t fix the root problem. In most Fort Lauderdale cases, a partial re-insulation of one wall or ceiling is $800-$1,800 depending on access. Call us for a free estimate and we’ll tell you what’s actually salvageable.
A typical home addition runs 3-5 months from permit approval to final inspection, and a detached ADU runs 4-7 months. Fort Lauderdale’s permitting office has gotten faster, but storms and material lead times still move schedules. We give you a written timeline and photo updates throughout, so you’re never wondering where we are.
We order Owens Corning products per job through our material partners, matched to the exact R-value and board thickness your plans call for. We don’t keep insulation sitting in a warehouse, which means you get fresh product and the right spec, not whatever was left over. We also source KraftMaid, Cambria, and Silestone for interior finishes when you’re building out that addition.
If you’re planning a Fort Lauderdale home addition or ADU with Owens Corning products, call (754) 354-7423 to schedule your free estimate. You’ll get a written price, a straight answer on timeline, and a contractor who keeps his word.
Written by Luca Romano, Owner & Lead Contractor, Sawyer Remodel Fort Lauderdale at Sawyer Remodel Fort Lauderdale, serving Fort Lauderdale and nearby areas.
