I'll be honest. I went into this process as a fairly sceptical comparison shopper. We have a two-storey home in Woonona and I had three companies come out and quote on replacing all our windows with uPVC double glazing. I did my homework, I asked a lot of questions, and I made a spreadsheet. RJV Industries Windows won the job not on price alone, but on the quality of the conversation and the clarity of what they were proposing. If you're comparing quotes for double glazed windows in Wollongong and trying to work out who to trust, this is what I learned. We ended up with a full set of uPVC double glazed windows throughout the house and it was absolutely the right call.
Comparing window replacement quotes is more complex than most home improvement projects because the product specifications can vary significantly between companies. uPVC frame composition, glass unit specifications, spacer bar type, and installation methodology all affect long-term performance. For a two-storey home with 24 windows across multiple aspects, getting this right mattered. Research suggests that correctly specified and installed uPVC double glazed windows can deliver energy savings of between 20% and 30% on heating and cooling costs annually, which over a decade adds up to a meaningful return on investment.
The Problem in Detail
Our home was built in the late 1990s and still had its original aluminium single-glazed windows throughout. Two storeys, north-facing upstairs bedrooms that were great in theory but hot in practice, and a south-facing lower level that was draughty and cold in winter. The windows were operational but inefficient, and the thermal split between the two floors made climate control genuinely difficult to manage.
I'd been thinking about double glazing for a couple of years. The trigger was a neighbour's renovation where they'd replaced windows and I could see the difference in how their home performed. I started getting quotes and quickly realised that not all proposals were equal. Some companies were quoting aluminium double-glazed units, others uPVC; some included low-E glass as standard, others as an upgrade. It was harder to compare apples with apples than I'd expected.
How RJV Industries Windows Responded
RJV Industries Windows stood out from the first site visit. They were thorough, assessed each window individually rather than treating the house as a uniform job, and explained what they were recommending and why in terms I could actually evaluate. Read more about our team and the level of detail we bring to every quoting process.
They walked me through their full window range and helped me understand the specification differences between options rather than just telling me what to buy. That kind of transparency is exactly what you want when you're spending a significant amount on a home upgrade. They also took the time to explain how the performance of uPVC double glazed windows on a two-storey home differs from a single-storey property, particularly in terms of thermal stratification between floors. That level of detail was something the other companies hadn't touched on.
The quote was detailed, clearly laid out room by room, and was competitive against the other proposals I had on the table. There was no pressure to decide quickly and no sense that anything was being obscured.
The Solution and Outcome
RJV Industries Windows replaced all 24 windows across both levels with uPVC double glazed windows, with low-E glass specified for the north-facing upstairs windows and acoustic laminated glass for the two bedrooms closest to the street. The installation was completed over three days with a crew that communicated clearly throughout and left the home in good order each evening.
The thermal balance between the two floors has improved significantly. The upstairs bedrooms no longer overheat in summer and the lower level is noticeably warmer in winter without the draughts we'd grown used to. The noise reduction on the street-facing rooms has also been a genuine quality-of-life improvement, particularly for the kids' bedrooms. Our power bills in the first full year after installation dropped by around 25% compared to the year before, which aligned closely with what RJV Industries Windows had projected.
Looking back, the comparison shopping process was worth doing. But I'd go straight to RJV Industries Windows next time without hesitation.
What Tom Would Tell Others
If you're getting multiple quotes, make sure you're comparing the same specifications. Ask each company about glass type, frame composition, spacer bar material, and installation methodology. A lower quote might mean a lower-spec product. RJV Industries Windows won our job because they explained what they were quoting and why it was the right choice for our home.
If you're a homeowner in Wollongong weighing up your options for double glazed windows in Wollongong , take a look at what customers say about the RJV Industries Windows experience. When you're ready to have a proper conversation about your project, get in touch and talk through the detail with them.






