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UPVC Windows

Heatseal uPVC windows offer exceptional thermal performance, noise reduction, and ventilation. With European-inspired designs, multi-point locks, and durable weather sealing, they’re built to last in any climate.

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Quality Double Glazed Windows Offering Ultimate Thermal Efficiency & Ventilation

  • Heatseal uPVC double glazed windows and flyscreens are made to measure and manufactured to the highest global standards.
  • We offer a variety of opening styles based on popular European design and functionality.
  • We use a multi-chamber profile, steel reinforcing (as per manufacturing specifications) and a double weather seal to ensure your windows will last the test of time.
  • Heatseal windows are provided with multi point locking systems and a range of glazing options.
  • Whether it be external noise, the afternoon sun or the cold winter, Heatseal has a solution for you.
  • Heatseal uPVC double glazed windows and flyscreens are made to measure and manufactured to the highest global standards.
  • We offer a variety of opening styles based on popular European design and functionality.
  • We use a multi-chamber profile, steel reinforcing (as per manufacturing specifications) and a double weather seal to ensure your windows will last the test of time.
  • Heatseal windows are provided with multi point locking systems and a range of glazing options.
  • Whether it be external noise, the afternoon sun or the cold winter, Heatseal has a solution for you.

Our Featured Product

Category: uPVC Windows

Louvre Windows

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Category: uPVC Windows

Bespoke Windows

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Category: uPVC Windows

Corner & Bay Windows

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Category: uPVC Windows

Sliding Windows

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Category: uPVC Windows

Tilt & Turn Style Windows

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Category: uPVC Windows

Casement Windows

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Category: uPVC Windows

Awning Windows

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CLAIM YOUR FREE MEASURE & QUOTE IN 48 HOURS

Get A Quieter, More Comfortable Home In Just 3 Simple Steps

Step 01

Book Your Free In-Home Measure & Quote

Tell us what areas you’re looking to upgrade, and
we’ll schedule a visit within 48 hours. One of our
trained specialists will inspect your windows, take
precise measurements, and answer any questions –
no pressure, no obligation.

Step 02

Get A Fixed-Price Quote With Zero Guesswork

We’ll provide a clear, upfront quote based on your home’s actual conditions – not rough plans. You’ll know exactly what you’re getting, how it works, and how much you could save on energy
bills long-term.

Step 03

Approve And Let Us Handle The Rest

Once you’re ready, our in-house installers take care
Of everything – no subcontractors, no delays. Your
new windows are manufactured locally and installed
with precision, backed by a IO-year Peace-of-Mind
Guarantee

CLAIM YOUR FREE MEASURE & QUOTE IN 48 HOURS

See What 100s Of Our Happy Customers Say:

5.0
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Stasia T. profile pictureStasia T.
01:11 29 Jun 25
Paul and his team recently installed a lift and glide door and windows for our whole house. They are so beautiful and have made an amazing difference to the look of our home. The lift and glide door is absolutely stunning! They were so professional right from the first meeting, to scheduling and through to installation. We were very impressed and we highly recommend Paul and the Heatseal Double Glazing team.
George K. profile pictureGeorge K.
04:43 10 Jun 25
High quality product, and high quality service and communication. Really pleased with everything that Paul and Callum have been able to do for us. Highly recommend.
ben h profile pictureben h
04:46 15 May 25
If you're looking for an insanely solid windows and frames to sound proof or insulate your house then look no further. These guys are absolutely amazing to say the least. Their products are also well and truly above and beyond what you'd expect and the entire process has been nothing but amazing. Can't thank the team enough for all their work.

As far as my use case goes, I have quite a large hifi and seperate cinema system which can get insanely loud so I needed some serious glass to help keep the noise contained and this goes above what I was expecting. Anyone who's serious about their cinema needs to give these guys a call.
Joan C. profile pictureJoan C.
02:13 31 Jan 25
We had Heatseal install windows and doors at our previous home and we knew that the double glazing worked and was very efficient. We have found in our new home that the early morning temperature in the lounge area has been reduced by a good 5 - 10 degrees due to the new windows. Nathan, who did the job, was very efficient, a clean worker, friendly and eagerly helped us move furniture. 10/10 for the whole team.
Chelsea J. profile pictureChelsea J.
23:52 30 Jan 25
10/10 - would recommend HeatSeal to all family and friends - and have done so.

Price - affordable and competitive quote. HeatSeal was the only company open to completing smaller orders (not an entire new house build).

Innovative options - HeatSeal has the option of uPVC frames and double glazing.

Customer Service - Professional and friendly customer service by entire team.

Office staff and invoicing - simple and easy invoicing with instalments and quick and friendly response times by admin team.

Quoting staff - Professional and friendly. Explained works options in clear and simple terms to easily understand.

Trades - Set timeframes and met expectations. Clear communication throughout. Window was broken and boarded up - HeatSeal went above and beyond to complete works as soon as possible because of this. Final result - exceeded expectations, looks great!
El B. profile pictureEl B.
01:52 22 Jan 25
We’ve had several jobs undertaken by Heatseal, from replacement of several of our window frames and a door cut into a wall to access a new outdoor patio area.

Regarding the door, we went in wanting a French door but were unable to go with this due to space/engineering challenges. Paul went through our options to get something that was suitable for our needs and he has a sixth sense to provide a product that went above and beyond what I had imagined we’d end up with.

With our windows, we had our hearts set on the European style tilt and turn frames, something that’s a rarity in Australia and Heatseal were one of the few installers that offer this option. Not the cheapest way to go, but the quality and functionality was well worth it.

I can’t recommend highly enough the level of quality and service from Heatseal.
Christine A. profile pictureChristine A.
05:41 26 Nov 24
Absolutely fantastic service from beginning to end. Heatseal have a second to none communication style, impeccable service and excellent craftsmanship.
So happy.
Craig B. profile pictureCraig B.
02:29 11 Oct 24
After considering upgrading our older windows in the kids bedrooms to double glazed for years, experiencing the Bunbury tornado in 2024 quickly made that decision immediate. And what a shame we hadn't done it 10 years ago... the noise reduction, heat insulation is truly remarkable and the kids are now back sleeping through the night in their own beds. The fitting to the older frames was seamless, look great and all round service has been excellent. A real game changer for us, thanks Heatseal Bunbury
Caroline F. profile pictureCaroline F.
11:13 16 Sep 24
Fantastic after sales service! We had a minor issue and it was dealt with very rapidly by the Heatseal team. Thanks Paul.
Caroline & Greg
tim H. profile picturetim H.
09:24 18 Aug 24
We have purchased new windows and doors from Heatseal for our revovation/extension. We absolutely love the feel the windows give our home. Really happy we made the decision to go with Heatseal. Paul and all of his staff have made the process so easy and their customer service is above and beyond. Its so refreshing to deal with a company that provides quality product and top service. Thanks to all the team!
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