Therma-Tru Home Additions & ADU Nationwide

Therma-Tru Home Additions & ADU: The Pompano Beach Owner’s Guide

We stock and install Therma-Tru entry systems, sidelites, and patio door units for home additions and ADU projects in Pompano Beach, with typical installed pricing from $45,000 to $130,000 for full additions and $90,000 to $220,000 for detached ADUs. Most Therma-Tru door and frame issues in Pompano Beach additions trace back to one of three failures: seal degradation from salt air exposure, frame shift from the sandy soils common east of Dixie Highway, or hardware corrosion accelerated by our humidity cycles. Homeowners usually spot the problem when a door that once latched cleanly starts sticking seasonally, or when daylight shows between the jamb and the weatherstrip - signs that the unit’s thermal and structural integrity is compromised.

Call (754) 714-6540

Which Therma-Tru Models This Applies To

Therma-Tru categorizes its residential door systems by material platform, and each behaves differently in a Pompano Beach addition or ADU. The Classic-Craft and Fiber-Classic series use fiberglass skins over polyurethane cores - they resist our salt air better than steel but the fiberglass can delaminate if the factory finish is compromised and left exposed. The Smooth-Star and Benchmark lines are the painted fiberglass options we see most often in modern Pompano Beach ADUs; their MDF-style stiles swell if water gets past the sill pan, which happens more than it should on additions where the original concrete pad wasn’t re-poured to match new floor elevations.

To identify your exact unit, check the hinge-side jamb for a stamped date code and series mark, usually 12 to 18 inches above the floor. The part number prefix tells us everything: CCA for Classic-Craft, FC for Fiber-Classic, SS for Smooth-Star. For patio door systems in ADU bedroom conversions, look for the Sentry or Pulse series tags on the operating panel’s top rail. We source OEM jambs, sills, and hardware directly from Therma-Tru’s distribution network, though on older discontinued series we’ll spec an aftermarket equivalent from Plastpro or JELD-WEN that matches the rough opening and maintains the impact rating. The compatibility gotcha in Pompano Beach is the HVHZ (High Velocity Hurricane Zone) requirement - any replacement door in a new addition or ADU must carry a Florida Product Approval or Miami-Dade Notice of Acceptance, and not every Therma-Tru SKU qualifies, even within the same series.

Signs Your Therma-Tru Home Additions & ADU Is Failing

• The door sticks at the top corner seasonally. This is frame racking, usually from differential settlement between the original structure and the addition’s foundation. In Pompano Beach, the loose sand and shell fill east of Federal Highway settles unevenly for years after construction. The fiberglass door itself is fine; the rough opening has shifted and the jamb is no longer plumb.
• Visible gaps at the weatherstrip or light leaking around the perimeter. Therma-Tru’s Q-Lon or bulb-style weatherstrip compresses permanently after five to seven years in our heat. Once the memory foam or rubber loses resilience, the seal becomes cosmetic. Energy bills climb before most owners notice the draft.
• Corrosion on hinges, handles, or multipoint locking hardware. The stainless steel and brass hardware Therma-Tru specifies holds up well, but cheaper replacement hardware from prior repairs often doesn’t. We see this on Pompano Beach ADU conversions where the original builder substituted grade 304 stainless for the required 316 in coastal applications.
• Soft or discolored trim at the sill or brickmould. Water intrusion at the sill pan is the failure mode we dread most. The fiberglass skin survives, but the subfloor, jack studs, and king studs behind it rot quietly. In our climate, that damage can advance six inches up the frame in a single rainy season if the sill pan was omitted or the flashing tape failed at the corner.
• Fogging between panes on sidelites or patio door glass. Therma-Tru’s decorative glass units are sealed with dual-seal warm-edge spacers, but the coastal UV and thermal cycling eventually breach the seal. The glass unit needs replacement; the door frame usually does not.

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Replacement Cost & What’s Included

For a Therma-Tru entry system replacement within an existing Pompano Beach home addition, expect $2,800 to $6,500 installed for a single prehung unit with standard sidelites, including removal, disposal, new HVHZ-rated frame, hardware, and trim. Full patio door systems in ADU projects run $4,200 to $9,800 depending on panel count, impact glass specification, and whether we’re cutting into block or frame construction. Complete home additions start at $45,000 and reach $130,000; detached ADU construction ranges from $90,000 to $220,000.

What drives the range: wall condition behind the unit, whether the original sill pan can be salvaged, and the impact rating required for your Pompano Beach zone. Under Clause 1 of The Haven Standard, you get a written flat price before any work starts, with line-item breakdown. Every Therma-Tru installation carries our 365-Day Done Right Promise - if the weatherstrip compresses prematurely or the hardware fails, we make it right.

DIY or Call Us?

There’s a safe middle ground for homeowners. You can verify the model stamp, photograph the failure, and check the sill pan for obvious gaps or missing end dams. What you shouldn’t attempt: removing a prehung unit from a block wall in an HVHZ zone, adjusting multipoint lock hardware (misalignment voids the warranty and compromises impact resistance), or cutting a new rough opening for an ADU conversion without verifying the header load path. We’ve rebuilt three Pompano Beach additions where the owner’s DIY door install trapped water behind the WRB for two years. The door looked fine; the wall behind it didn’t. For a documented assessment and written price, call (754) 714-6540. Estimates are free, and we bring the Florida Building Code with us.

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