NT Windows
James Hardie
Full-Home NT Windows Twinsulator Aluminum Replacement | Framed-In Openings and Fresh Siding with Sealed Finish
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4.9 Rating
Full-Home NT Windows Twinsulator Aluminum Replacement | Framed-In Openings and Fresh Siding with Sealed Finish
This South Austin project centered on a full window replacement using NT Windows Twinsulator aluminum B&B units. We chose aluminum for its strong frames and clean black-on-black lines on an aging home. Every opening got OSI closed-cell spray foam to block air leaks in 100-degree summers. New interior sills and aprons up to 96 inches finished each window inside.
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The siding work followed the windows, giving the home a fresh, unified exterior. We framed in old window and door openings, then re-sided and sealed every seam. Sherwin Williams 950A clear caulk locks out moisture and cedar pollen that plague Austin homes. The finished siding pairs cleanly with the new dark window frames.
The homeowner first connected with Austin Pro on October 28, 2024, through a James Hardie referral. Early talks focused on tired, leaky windows on an older South Austin home and the goal of a cleaner exterior.
We moved the project to prospect status on October 29, 2024, and inspected every window opening. The assessment flagged out-of-square openings and framing that would need new headers before any windows could sit right.
Selections landed on NT Windows Twinsulator aluminum units in a black finish, paired with new siding. The homeowner approved the full scope on October 16, 2025, including the door and garage door additions.
Crews executed the plan in sequence in late January 2026. Windows went in first with OSI closed-cell foam seals, then old openings were framed in, and finally the siding was hung and caulked with Sherwin Williams 950A.
We walked the finished exterior with the homeowner, checked every window seal, and confirmed all seams were caulked with Sherwin Williams 950A. The site was cleared of debris and the job was invoiced on January 27, 2026, with the file closed on February 5, 2026.
We replaced all the windows and re-sided a 1980s-era home in South Austin, Austin, TX, turning a tired exterior into a tight, modern shell built for Central Texas weather. The window swap came first, then the siding — a sequence that made every detail line up right.
The original windows were decades old and leaking conditioned air. On a home built in this ZIP, that means a hot AC bill every summer and drafts you can feel by a window. New units were the fix.
Older South Austin homes hide surprises behind the trim, and this one was no exception. Once we pulled the old windows, we found openings that needed reframing to sit square and carry a proper header. Our framing crew built new headers and, in one spot, created a fresh opening sized for an 8-foot header. That kind of woodwork is where a lot of DIY window jobs go wrong — people set a new unit into an out-of-square opening and wonder why it leaks air a year later. We took the time to frame it right before a single window went in.
We chose NT Windows Twinsulator aluminum for its slim, strong frames and sharp black-on-black look. Aluminum holds its shape through Austin's 100-degree-plus summers without the sag you can get from weaker frames.
Closed-cell foam matters here. It blocks the air movement that drives up cooling costs and keeps out the cedar pollen that coats Austin homes each winter. A cheaper filler simply won't hold that line over time.
We worked in a clear order: windows first, then siding. That let us frame in old window and door openings before the new siding covered everything for a seamless finish.
The home now presents as a clean, modern build with dark window frames against fresh siding. Air leaks are gone, and the exterior is sealed against moisture, heat, and pollen.
Doing windows first lets us frame in old openings and set new headers before the siding covers the wall. The siding then hides every framing seam for a clean, finished look.
Yes. Aluminum frames stay rigid through the region's extreme heat and hold a sharp profile for years. Paired with closed-cell foam, they seal out drafts and cut cooling costs.
The homeowner first reached us in late October 2024, approved the work in October 2025, and we completed the install on January 27, 2026. The on-site work itself finished in a single day.
This full window-and-siding job fell in the $50k–$60k range. Pricing depends on the number of openings, framing needs, and door work involved. Reach out to Austin Pro for a walkthrough on your own home.
Austin Pro crafts exteriors that not only captivate but also promise steadfast protection and reliability, embodying the vibrant spirit of Austin in every facade. Your home's exterior is its silent storyteller and first impression; let us help it speak volumes without uttering a word.
