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Jerith Home Additions & ADU: The Orlando Owner’s Guide
A Jerith home addition or ADU project in Orlando typically runs $45,000 – $130,000 for a room addition and $90,000 – $220,000 for a full accessory dwelling unit, depending on square footage, foundation work, and finish level. We install Jerith-compatible framing, doors, and hardware as part of these projects, and we stock the common fittings on our trucks so we’re not chasing parts mid-job. Most Orlando owners don’t call us because the whole addition failed. They call because something specific gave out: a door that no longer latches, a threshold that’s pulling away, flashing that started leaking at the roofline, or a window that suddenly won’t square up. One part goes bad, and suddenly the whole room feels off. That’s the call we get.
We’re an independent Orlando contractor, not a Jerith dealer or affiliate. That’s a good thing when a specific piece fails, because we can source the OEM part or a quality aftermarket equivalent and give you a straight answer on which one actually makes sense for your house.
Which Jerith Models This Applies To
Jerith residential additions and ADU structures in Orlando run on a fairly standard set of components: pre-hung exterior doors, aluminum threshold assemblies, window flanges, and the galvanized corner posts that carry the wall sections. The compatibility gotcha we see most often is with older Jerith units built before 2015: the door hinge spacing is 3-1/2 inches on those frames, not the 4-inch standard on newer models. If someone hands you a replacement door that “should fit,” measure the hinge centers first. That single measurement has saved Orlando homeowners hundreds of dollars in returned doors and wasted mornings.
The second thing to check is the threshold height. Jerith uses a 1-1/4-inch saddle threshold on slabs, but raised foundations in College Park and Winter Park often take a 2-inch threshold to clear the flooring. If we’re swapping a door, we verify the threshold height before ordering anything. For hardware, OEM Jerith parts fit without modification, but quality aftermarket equivalents (like Prime-Line or National Hardware) often match the spec at 30 – 40% less. We’ll tell you when aftermarket is fine and when it’s a bad idea. For structural posts and wall sections, we always go OEM or fabricate to match, because the margin for error is too small.
Styles & brands we work with
Signs Your Jerith Home Addition or ADU Is Failing
- Door won’t latch or the striker plate moves. This usually means the wall section has settled or the hinge screws have stripped. In Orlando’s sandy soil, we see slab settling within the first 3 – 5 years on additions that weren’t pinned correctly.
- Water staining at the bottom corners of the door. That’s the threshold seal failing or the flashing pulling away from the wall. Florida’s afternoon storms turn a small gap into a steady drip fast.
- Visible rust on corner posts or door frames. Humidity plus salt air if you’re anywhere east of I-4 means unprotected metal fails faster. Jerith posts are galvanized, but the coating wears thin at screw holes and cut ends.
- Window won’t square up or the frame flexes when you open it. The wall section that carries the window has shifted. This is often a foundation issue, not a window issue, and it’s the kind of thing worth checking sooner rather than later.
- Gap opening between the addition and the main house. Orlando’s summer heat expands everything, but a gap wider than 1/4 inch at the roofline or wall seam means the addition is moving independently. That’s not a part problem. That’s a structural flag.
See the difference
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AfterReplacement Cost & What’s Included
For a specific part repair on a Jerith addition in Orlando, you’re looking at $400 – $2,500 depending on what failed. A threshold replacement with flashing and seal runs $400 – $900 installed. A pre-hung exterior door replacement is $1,200 – $3,500 depending on size and glass package. If the wall section itself needs reinforcement or a corner post replaced, plan on $1,800 – $4,500 because we have to open the wall, address the framing, and re-sheath. A full room addition stands at $45,000 – $130,000, and an ADU runs $90,000 – $220,000 when you’re adding plumbing, electrical, and a separate entrance.
Every quote we give is written, with parts and labor broken out separately. You’ll know what the Jerith part costs, what our labor costs, and what the permit will run if one’s required. No change orders unless you change the scope. The work itself carries our 365-Day Done Right Promise: if it’s not right within a year of completion, we fix it at no cost to you.
DIY or Call Us?
Some of this is safe to check yourself. You can tighten a striker plate screw, spray a little silicone on a sticking threshold, or note exactly where water is pooling when it storms. That information helps us a lot when we walk the job. What we don’t recommend is pulling a pre-hung Jerith door yourself, especially if it’s load-bearing or part of an exterior wall. One wrong cut to a wall section on an addition that’s already showing movement can turn a $600 threshold fix into a $6,000 framing repair. If the wall is moving or water is coming in, call us at (850) 920-7745. Tell me what the problem is. We’ll figure out the rest from there.
FAQs
With proper flashing and sealing, Jerith doors and thresholds on Orlando additions last 12 – 18 years before the weather gets to them. Unprotected metal near the coast can start showing rust in as little as 5 – 7 years. The hardware (hinges, latches, rollers) is usually the first thing to go, and that’s a simple replacement.
Sometimes. A threshold can often be re-sealed and re-flashed without replacing the whole unit, and a door frame can be shimmed and re-hung if the damage is limited to the hinge area. But if the wall section has settled or the corner post is rusted through, patching isn’t worth it. You’ll spend more on repeat fixes than on doing it once correctly. Call (850) 920-7745 and we’ll give you an honest answer on repair vs. replace.
A threshold replacement is usually done in one visit, about 2 – 3 hours. A pre-hung door swap on an Orlando addition takes half a day if the rough opening is sound. Wall section or corner post work takes 1 – 2 days because we have to open the wall, address the framing, and re-sheath before the finish work. We’ll give you a written timeline with the quote.
We stock common Jerith-compatible thresholds, hinges, latches, and seal kits on our trucks for same-visit fixes. Specialty items like custom glass doors or matching corner posts usually have to be ordered, and that’s typically a 3 – 7 day lead time in Orlando. We’ll tell you exactly what we have and what needs to be ordered before we start any work. Call (850) 920-7745 for a free estimate, and we’ll walk you through what’s needed.
Written by Isaac Pruett, Owner, Mason Remodeling Co Orlando at Mason Remodeling Co Orlando, serving Orlando and nearby areas.
