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PGT Home Additions & ADU: The Houston Owner’s Guide
If you’re planning a home addition or ADU in Houston that matches PGT windows, doors, or exterior products already on your property, the installed cost typically runs $45,000 to $130,000 depending on square footage, foundation work, and how much PGT product gets integrated into the build. We stock and install PGT-compatible components on our trucks, and we’re usually on site within a few days of your call to measure and scope the project. Most Houston homeowners discover they need this work when a storm-season leak reveals failed flashing around an older PGT window, or when a growing family runs out of room and the garage conversion math starts making sense.
The real question isn’t just the price. It’s whether the addition will hold up to Houston’s humidity, clay-soil movement, and wind-driven rain the same way the rest of the house does. That’s where the PGT part matters. More on that below.
Which PGT Models This Applies To
PGT makes two product families that show up most in Houston additions and ADUs: the WinGuard impact-rated line and the Premier vinyl line. WinGuard is the one you want on any opening facing the Gulf weather track – it’s built around laminated glass and reinforced frames, and it’s what most Houston building inspectors expect when they see a project spec’d for impact resistance. Premier is the budget-friendlier vinyl product, still solid, but not rated for the same wind-load numbers.
Here’s the compatibility gotcha most contractors won’t mention: PGT WinGuard and Premier frames are not interchangeable at the rough opening. WinGuard frames run deeper and require a different nailing flange pattern. If you’re adding onto a house with existing WinGuard windows and you plan to match them, you match with WinGuard, not with a Premier unit sized to the same glass dimensions. The same applies to PGT sliding glass doors – the WinGuard track system sits about 3/8 inch taller than the Premier track, which matters when you’re setting finish floor elevations in a new ADU.
On the OEM versus aftermarket decision: for PGT glass and frames, we use OEM. The WindGuard lamination spec is not something worth gambling on with a generic equivalent, especially in Houston where a failed impact window becomes a water-intrusion problem inside the first year. For trim, weatherstripping, and hardware, quality aftermarket replacements from suppliers like Strybuc and Prime-Line work fine, and we’ll tell you where the savings are without cutting corners on the waterproofing side.
Bradford Remodeling Co Houston is an independent service provider. We’re not affiliated with PGT, but we’ve been installing their product line across Houston long enough to know which series takes which flashing detail, which sealant bonds properly to the aluminum cladding, and what the local inspectors in Houston will flag on a PGT rough-in.
Styles & brands we work with
Signs Your PGT Home Additions & ADU Is Failing
- Water staining on the drywall below a PGT window or door. This usually means the sill pan flashing was installed wrong at rough-in, or the sealant between the PGT frame and the weather barrier has pulled away. In Houston, the culprit is often condensation cycling: the frame heats and cools, the sealant loses bond, and rain finds the gap.
- Condensation between the glass panes of a WinGuard unit. That’s a failed insulated glass seal. The unit has lost its argon or krypton fill and the lamination is no longer doing its thermal job. It won’t cause a leak, but it will keep failing until the glass insert gets replaced.
- Difficulty locking a PGT sliding door or sash. The lock stile has sagged or the track is out of level. In Houston, slab movement from clay soils will rack a door opening over time, and the PGT frame will bind even if the door itself is fine.
- Air movement you can feel around a closed PGT window. The weatherstripping channel on Premier frames wears flat after about 8 to 10 years in Houston’s heat. You’re losing cooling dollars right out that gap, and the fix is a weatherstrip replacement, not a window replacement.
- Visible exterior frame corrosion or paint failure at the bottom corners of the PGT unit. This is the classic Houston sign of standing water at the weep system. The weep holes get clogged with pollen and dust, water sits against the aluminum cladding, and corrosion starts. Caught early, the frame can be cleaned and resealed. Caught late, the frame gets replaced.
Replacement Cost & What’s Included
A full home addition or ADU in Houston using PGT-compatible exterior products runs $45,000 to $130,000 when we scope it. The spread comes down to three things: whether you’re going up or going out (foundation work for a slab addition runs higher than a garage conversion that already has a pad), how many PGT openings you’re matching (a wall of WinGuard windows adds $8,000 to $25,000 in product alone), and whether the ADU needs its own electrical service drop or a subpanel off the main.
That number includes the parts, the labor, the rough-in, the finish trim, and the written scope of work with a fixed price before any tools hit the site. We don’t reprice at the door. If a rotten header gets discovered behind the old PGT window during demo, that’s a change order with its own line-item number, explained before we touch it. You’ll see it in writing.
Every completed addition carries the 365-Day Done Right Promise: if anything in the work fails inside the first year, Bradford Remodeling Co Houston comes back and corrects it at no charge. That covers the PGT product installation, the flashing, the framing, the drywall, and the finish work. The written guarantee is in your hand at job close, not buried in a contract file.
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AfterDIY or Call Us?
You can safely handle a few things yourself: cleaning PGT weep holes with a soft brush, checking weatherstripping for flat spots, and wiping down the frames with a mild cleaner to spot corrosion early. That’s maintenance, and it’s smart to do it twice a year in Houston, once after pollen season and once before storm season.
What you shouldn’t do is attempt to dismantle or reinstall a PGT WinGuard unit yourself. Impact-rated windows are heavy – a standard 4-foot by 6-foot WinGuard unit runs over 200 pounds – and a mishandled laminated panel can break a bone or crush a hand. The same goes for removing an existing PGT door frame from a load-bearing wall. That’s a structural job, not a handyman job. If you’re not sure whether the wall is load-bearing, call us. Curtis Lane will walk the addition with you, read the framing like a box score, and give you a straight number.
For a written, no-movement price on a PGT home addition or ADU in Houston, call (940) 289-7658. The estimate is free, and a live person answers.
FAQs
You can expect 20 to 30 years from PGT WinGuard frames in Houston’s climate, with the glass seal often failing inside that window. The frames hold up; the insulated glass units are typically the first component to go, usually around year 15 to 20. For a specific recommendation on your addition, call (940) 289-7658.
Yes, if the failure is confined to the sealant, weatherstripping, or weep system, the PGT unit can usually be repaired in place. If the frame has corrosion, racking, or a failed glass seal, replacement makes more sense than trying to rebuild a laminated impact unit piece by piece. We’ll give you the honest answer either way.
A garage conversion typically runs 6 to 10 weeks. A standard one-room addition runs 8 to 14 weeks. A full ADU with its own plumbing, electrical, and kitchen rough-in can run 4 to 6 months depending on permitting at the city of Houston. You’ll get a dated schedule in the written scope before work begins, and we hold to it.
Our trucks carry PGT weatherstripping, sealants, weep caps, and common hardware for WinGuard and Premier units. Glass inserts and full-frame replacements get ordered to spec from PGT’s distribution network and typically arrive within a week to ten days here in Houston. Call (940) 289-7658 and we’ll check stock for your exact model.
Get Your Free PGT Addition Estimate in Houston
If you’re planning a home addition or ADU and want PGT product matched correctly to what’s already on your house, start with a free estimate. Curtis Lane will walk the site, check the rough openings, read the framing, and give you a written scope with a fixed price before any work begins. That’s the Bradford way: straight scope, straight number – that’s the whole conversation. Call (940) 289-7658 and talk to a live person, day or night.
Written by Curtis Lane, Owner, Bradford Remodeling Co Houston at Bradford Remodeling Co Houston, serving Houston and nearby areas.
