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Extreme UPVC Windows

For a warmer, quieter Scottish home.

Enhanced locking for added security.
Broad selection of attractive finishes.
Designed to help retain heat.

A popular window upgrade in Scotland.

Extreme UPVC windows have a six-chamber construction, creating multiple insulating sections within the frame. They won’t rot or need much attention.

  • Help limit heat escaping.
  • Reduce draughts and soften noise.
  • Made-to-measure windows.
Extreme UPVC Windows

High-security locking as standard.

High-security locking is included as standard, with multi-point mechanisms, shoot-bolt locks and internally fitted glazing helping strengthen the overall installation.

  • Security built into the frame.
  • UPVC is weather-resistant.
  • No demanding maintenance.
Extreme UPVC Windows
Built around insulated profiles, secure hardware and a wide range of design options, they can be tailored to work with both contemporary and more traditional Scottish properties.

The multi-chambered frame helps reduce heat transfer, while suitable glazing and effective seals maintain a more consistent indoor temperature.

Security is integrated into the window design, with multi-point locking hardware helping secure the opening at several points.

With minimal upkeep, the UPVC frames can retain their appearance and functionality for many years.

With minimal upkeep, the UPVC frames can retain their appearance and functionality for many years.

Give your UPVC windows a character with a selection of plain colours, woodgrain effects and more distinctive finishes.

Insulated profiles create a barrier against the elements, reducing the opportunity for draughts and water to enter.

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Simply select the brochure(s) you would like to browse, fill in your details, and then click ‘Download Brochure’.

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3 steps to choosing your new windows

Choosing your style

Uncover the most appropriate style by considering the character of your property and what look most appeals.

Compare options

Appearance is important, but so is security, glazing, hardware etc. Give them similar focus to the colour chosen.

Speak to ProGlaze

Support is always there for you at ProGlaze. Let our knowledge advisors inspire and excite you with window ideas.

Want help & advice choosing your new windows?

ProGlaze advisors will guide you through every window option and help you choose the perfect options for your home. Request your tailored quote today.

It’s all in the details

From colours to carefully chosen window handles, every detail helps shape the final look of your new Extreme UPVC windows. ProGlaze gives you the choice to personalise your design, creating windows that feel beautifully matched to your home.

The colour palette for our Extreme UPVC windows includes understated shades, timber-inspired effects and modern colours, with popular flush casement finishes including grey, black and white.

Choose from traditional and contemporary handle designs to complete the appearance of your Extreme UPVC windows. Each option is designed to feel comfortable in everyday use while incorporating dependable locking hardware to help keep the window securely closed and resist unwanted entry.

A Brand New ProGlaze Showroom is Coming to Alloa

Soon you’ll be able to experience ProGlaze windows, doors and home improvements first-hand, with expert advice available at our brand new Alloa showroom. Click below to discover what’s coming.

Scottish experts, guaranteed quality. ProGlaze would love to add your Scotland home to a long list of properties that we have been privileged to have enhanced with replacement windows.

ProGlaze offers distinctive UPVC and aluminium window ranges selected to provide a wide array of choice and the utmost performance.

The amazing quality of a ProGlaze window is testament to the skill of our craftspeople and selected components.

You couldn’t wish for a more customer-centric company than ProGlaze to assist with your window buying and oversee the installation.

Our 10 year guarantee reassures you that your investment is protected well beyond the standard cover offered by many installers.

Common questions about Extreme UPVC windows

There’s much to think about when buying replacement windows. Luckily, Extreme UPVC windows incorporate everything you need, promising enduring style, security and strength. Find out more about them by reading our common questions, answered by our team of experts.

1. How do UPVC windows compare with aluminium and timber frames?

UPVC offers a practical balance of insulation, affordability and straightforward maintenance. Aluminium can provide slimmer sightlines and a more contemporary appearance, while timber offers a natural finish and traditional character. The best material depends on the appearance, performance and maintenance requirements of your property.

2. Which window frame material lasts the longest?

A good-quality window can provide many years of service regardless of the frame material when it is correctly manufactured, installed and maintained. UPVC is particularly appealing for its low-maintenance performance, while aluminium is known for its strength and durability.

3. What's the difference between an A+ and an A++ energy rating?

Both ratings indicate strong thermal performance, but A++ represents a higher level of energy efficiency than A+. The actual performance of a replacement window depends on factors including the frame, glazing and overall specification, so the rating should be considered alongside the complete window design.

4. Can I replace the windows on a property in a conservation area?

Replacement windows can be possible in a conservation area, but additional planning restrictions may apply. Local authorities can have specific requirements concerning materials, appearance, glazing patterns and other details, particularly where the property’s character needs to be preserved.

5. Can Extreme UPVC windows be fitted with triple glazing?

Yes. Extreme UPVC window frames can accommodate both double glazing and triple glazing, allowing you to choose the specification that best suits your home. Triple glazing can provide enhanced thermal performance and may be particularly useful in exposed or colder locations.

6. Do UPVC windows fade or change colour over time?

Quality UPVC windows are designed to retain their colour and finish for many years. Choosing a reputable profile and appropriate finish helps maintain their appearance, while routine cleaning can remove dirt and environmental deposits that might otherwise affect how the frames look.

7. How long do Extreme UPVC windows last?

Extreme UPVC windows are designed for long-term performance and can typically last around 20-35 years when properly manufactured and installed. Regular cleaning and occasional hardware maintenance can help preserve their appearance, operation and overall performance throughout their lifespan.

8. Can I have different colours on the inside and outside of my UPVC windows?

Yes. Depending on your chosen finish, dual-colour options can allow the interior and exterior of your Extreme UPVC windows to have different colours. This gives you greater flexibility to complement both your home’s interior décor and its external appearance.

Start planning your replacement windows

Begin with a free quote and helpful design advice from ProGlaze, making it easier to choose replacement windows that suit your home, style and budget.

  • Speak with a ProGlaze designer.
  • Explore window styles and finishes.
  • Get a tailored quote.

Get your free window & door quote

Simply fill in your details for your free, no-obligation quotation, and click “Get Quote.”

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