Installation & replacement · Caringbah NSW
Windows that make the house feel finished.
We measure on site, spec the glass with you, and install with one crew. No subcontract shuffle, no half-done trim, no three-week wait for a punch list.
- Years in the trade
- 18
- Homes completed
- 4,200+
- Workmanship
- Lifetime
Licensed & insured
WERS-rated glass packages
One crew, measure to finish
Written lifetime workmanship warranty
Selected work
Quiet rooms. Clean lines. Light that actually reaches the back wall.
What we install
The openings that leak, fog, stick, or just look tired. That’s the work.
Window replacement
Insert or full-frame. We pull the old unit, flash it correctly, and leave the interior looking like it was always this way.
New construction
Rough-opening installs for builders and homeowners adding on. We show up when the framing is ready, not three weeks later.
Patio doors & sliders
French, sliding, and folding units that actually roll. Thresholds that don’t collect water. Hardware that doesn’t rattle.
Glass & specialty
Fogged IGUs, tempered bath glass, acoustic packages, and impact glass for the rooms that need it.
How we work
You get a crew, not a call center.
TrueLine is a window shop, not a lead mill. The person who measures your openings is on the job the morning we install. Trim is cut on site. We haul away the old units. Floors are covered. You get a written warranty and a number that rings a real phone.
- On-site measure, not a tape-from-photos estimate
- Vinyl, fiberglass, and clad-wood lines
- WERS-rated double glazing as standard
- Interior finish matched to existing trim
The process
Four steps. No mystery timeline.
-
Measure
We walk the house, check flashing and sills, and confirm what can be insert vs. full-frame.
-
Spec
Glass package, frame color, grids, hardware. You see the quote in writing before anything is ordered.
-
Install
Typical whole-home jobs finish in one to three days. One crew stays until the last stop is in.
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Walkthrough
We operate every sash with you, leave the warranty packet, and schedule any follow-up before we leave.
Homeowners
The rooms got quieter. The drafts stopped. That was the point.
“They replaced every window in a 1920s bungalow without wrecking the plaster. Two days. The house is finally warm on the north side.”
“I had three national brands out. TrueLine was the only crew that talked about flashing instead of monthly payments. That’s who I hired.”
“Patio slider used to hop the track every winter. New unit, new threshold, done before lunch. They even recaulked the adjacent window.”
Start here
Request a free on-site measure.
Tell us the house and the problem. We’ll confirm a morning or afternoon window, walk the openings, and send a written quote from the Caringbah workshop.
Unit 9, 4-6 Taren RoadCaringbah NSW 2229 +61 417 649 039 hello@trueline-windows.com Mon-Sat · 7:30am-6pm Sutherland Shire & southern Sydney