NT Twinsulator Aluminum Window Replacement | Stone Mortar Repair and Exterior Finish-Out








NT Twinsulator Aluminum Window Replacement | Stone Mortar Repair and Exterior Finish-Out









This Pflugerville project swapped out aging windows at a Windermere counseling center. We used NT Twinsulator aluminum windows from NT Windows, finished white inside and out. Aluminum frames hold up well against 100-degree summers and daily temperature swings here. The crew also handled stone mortar repair around the openings, so the new units sit tight and weatherproof.
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This came to us through a previous customer. We had already replaced the windows on the church owners' home, so when the counseling center needed the same work, they reached back out. The lead came in on May 11, 2026.
Our window technician measured each opening before ordering. The building has a stone masonry exterior, so we flagged early that the openings would need mortar repair once the old units came out. This shaped the scope and kept surprises off the job.
The project moved to prospect on May 13 and was approved on May 14, 2026. We selected NT Twinsulator aluminum windows in white, sized as standard units up to 132 united inches. Windows were ordered May 21 with delivery, dump, and finish-out labor built into the plan.
The windows arrived in late June, and the crew installed them over two days, July 8 through July 9, 2026. They removed the old units, prepped and repaired the stone mortar around each opening, then set the new white NT windows. Exterior finish-out wrapped up the second day.
The job was completed and invoiced on July 9, 2026. Every opening got new efficient windows and restored masonry, with no cracked stone left behind.
We replaced the windows at a church counseling center in Windermere, Pflugerville, TX, installing NT Twinsulator aluminum units over two days and repairing the stone mortar around each opening. The building is now tighter, quieter, and better suited for Central Texas summers.
The old windows had reached the end of their useful life. For a counseling center, comfort and quiet matter more than most spaces, so an efficient, well-sealed window makes a real difference.
This was a repeat client. We had already done the windows on the church owners' home, so they trusted us with the counseling center too.
The crew found older windows set into a stone exterior that needed careful handling. Pulling windows from a masonry wall is not the same as a standard framed opening. If you rush it, you crack the surrounding stone and create a bigger repair than the window itself.
That is why we planned stone mortar repair into the scope from the start. As each old unit came out, the crew cleaned up the openings and repaired the mortar so the new frame seated tight. Skipping that step is the most common mistake here. A window can be perfect, but a bad seal against the stone still lets in heat, water, and cedar pollen every spring.
We installed NT Twinsulator aluminum windows in a white-on-white finish. Aluminum frames stand up well to the daily heat and expansion cycles you get in Pflugerville summers. The Twinsulator system adds a thermal break, which helps cut heat transfer through the frame.
Aluminum also holds its shape over time, which matters for larger commercial-style openings. It stays strong without the bulk of other frame types. For a building that sees a lot of foot traffic and needs to stay comfortable, that durability earns its keep.
The on-site work ran two days, July 8 through July 9, 2026. Our window technician measured ahead of the order, so the units fit the openings without surprises. That measure step is why the swap went smoothly.
The counseling center now has efficient white NT windows and clean, repaired stone around every opening. The building holds temperature better and looks sharp from the street. The thermal-broken frames should help ease cooling loads through the long Texas summer.
The on-site install ran two days, July 8 to July 9, 2026. The windows were ordered on May 21 and arrived in late June, so the full timeline reflects manufacturing lead time, not the install itself.
Aluminum keeps its shape well under 100-degree heat and repeated expansion. The NT Twinsulator line adds a thermal break, so you get the strength of aluminum without giving up much on efficiency.
This window project fell in the $10,000 to $15,000 range. That covered the units, delivery, installation labor, stone mortar repair, and exterior finish-out.
Yes. This job was a church counseling center, and we had previously done the windows on the church owners' home. Austin Pro handles residential and light commercial exterior work across Central Texas.





