A-Rated Window & Door Installations in Glasgow
Double glazing keeps your home warm, cosy and energy-efficient all year round. RePlace Windows installs durable double-glazed windows built to the highest standards, with full specification and glass evidence for every installation.
We assess our A-rated glazing by U-value, the same measure used in Scottish Building Regulations. Our high-performance Low-E glass uses thermally insulating coating technology to minimise heat loss while maximising natural light and solar heat retention.
Install new energy-efficient windows and doors to improve your home’s performance. Get in touch today for a free, no-obligation quote to get started on your home improvements.

Our uPVC Windows
uPVC windows use insulated glazing with two or more glass panes in a strong, low-maintenance plastic frame that minimises heat transfer. We offer a wide range of styles and colours, with expert advice to find the right fit for your property. Our products use Rehau uPVC frames glazed with Saint-Gobain argon-filled glass, assembled by fully-trained fabricators.
Our 28mm thick double glazing can be installed within a wide range of windows, including:
Casement windows open outward for maximum airflow and flexible ventilation. Built from durable uPVC with strong locking systems, they withstand daily wear and changeable weather.
Tilt & Turn windows tilt inward for ventilation or turn fully for easy cleaning. This multi-point system balances versatility, security and thermal comfort, ideal for high-rise buildings.
Sash windows use two framed panels that slide over one another, replicating a traditional look while adding modern energy efficiency, ventilation control, security and ease of use.
Bay windows project outward with a large central pane flanked by two angled side windows, adding light, airflow and space. A timeless choice, popular in Glasgow's tenements.
Window Colours
With our coloured uPVC windows, you add style and personality to your home while keeping all the performance benefits of modern double-glazing.
Our wide range of durable frame colours includes:
Colours are available across all our popular window styles. For a bespoke finish, you can even choose premium or dual‑colour options.
Born in Germany · Made in Glasgow
⭐⭐⭐⭐⭐ 5 Star Reviews across Google, Which?, Yell & Facebook.
The work done was immaculate and they were really helpful. Couldn’t fault them, highly recommend.Checkatrade Review | Coatbridge
This company was recommended to myself and I have recommended to others.Checkatrade Review | Coatbridge
Extremely clean and tidy, would have them back in a heartbeat if I had any more work.Checkatrade Review | Glasgow
Much better finish and a more professional job than the other windows which were replaced a few years ago by the top firm at the time. Excellent work.Facebook Review | Marion
Really nice to deal with. Would definitely recommend to others. Looking forward to using them again for future work.Checkatrade Review | Glasgow
Was a quick and good quality window replacement!Facebook Review | Lewis
Our Double-Glazed Doors
Our doors come with multi-point locking and a choice of double, triple or acoustic glazing, balancing style, security, thermal comfort and efficiency. We offer bespoke design and installation for uPVC front doors and uPVC back doors.
uPVC Doors in Glasgow
Sharing all the advantages of uPVC windows, our uPVC doors are a cost-effective choice for interior and front doors. Our range offers a variety of styles, colours and finishes, from sleek modern panels to traditional wood grain, with customisation options to reflect your personal style.


Composite Doors in Glasgow
Composite doors are expertly made to order from timber, insulating foam and other materials, designed to enhance your home’s exterior while boosting interior insulation. Whether you prefer a traditional woodgrain finish or a sleek modern design, they combine the warm appeal of wood with the benefits of modern materials.
French Doors in Glasgow
Exterior French doors create a wide, elegant entrance that maximises airflow and access to gardens or balconies. A-rated with low-U-value double or triple-glazing, they combine excellent thermal performance and security, perfect for terraces, balconies and garden entrances.


Patio Doors in Glasgow
Patio doors create a seamless link between your living space and the outdoors. These large sliding doors save space while maximising natural light and airflow, balancing strong security with excellent thermal performance.
Bifold Doors in Glasgow
Bifold doors open up your living space with a seamless indoor-outdoor flow. Large glass panels sit within sturdy aluminium frames that fold and stack neatly aside, allowing wider openings than sliding doors, ideal for kitchens, garden rooms and balconies, with double or triple glazing for year-round comfort.

Glazing Options
As Glasgow’s trusted double and triple-glazing specialists, we design glazing solutions built to handle whatever the weather brings.

Double Glazing in Glasgow
Fitted with high-performance Low-E glass, our 28mm double-glazed windows significantly reduce heat loss and outside noise while boosting security. With various styles available, they can raise your home’s value and preserve its character, such as sash windows in period homes gaining thermal performance without losing their classic charm. As Glasgow double glazing specialists, we take pride in the quality and finish of every installation.
Triple Glazing in Glasgow
We also manufacture and install triple glazed windows, fast becoming the standard for uPVC windows across Glasgow. With three panes and two air gaps, it cuts heat loss by up to 136% versus single glazing, especially valuable for large bay windows. Our windows hold an ‘A’ energy efficiency rating, helping lower bills while boosting noise reduction and security.


Acoustic Glazed Windows in Glasgow
Our acoustic glazed windows absorb sound waves, cutting external noise by up to 40 decibels. They deliver excellent sound insulation without blocking your view, ideal for homes near busy roads in Glasgow.
Double Glazed Aluminium Windows in Glasgow
Our aluminium windows combine a sleek, contemporary look with lasting durability, corrosion-resistant and low-maintenance for Scotland’s oceanic climate. Thermally-efficient polyamide breaks support double or triple glazing, while slim sightlines maximise light and multi-point locking boosts security.

RePlace Windows: Trusted Double Glazing Installers in Glasgow
RePlace Windows Limited has been a trusted supplier and installer for double glazed windows in Glasgow since 2014. Our team has a combined 30+ years of industry experience and are trusted by homeowners across the central belt.
Here are some other reasons why homeowners across Scotland trust us as their local double glazing installer.
- A-Rated Energy Efficient Windows
- 5-star Rated on Google, Facebook, Yell & Which?
- Transparent Pricing with No Hidden Costs
- Fully Trained and Trusted Fabricators
- No Deposit - Only Pay On Completion
- Fully Comprehensive 10 Year Guarantee
- PAS 24 Accredited PVC Window Frames
- Simple, Stress Free Installation Process
Frequently Asked Questions
We’ve answered some of the most common questions about double glazing windows below.
Double glazing comprises two panes of glass separated by a gap of air or an inert gas like Argon. The gap is an insulating layer that reduces heat loss and makes the unit more energy-efficient.
These are some of the benefits of double glazing, including:
- Energy efficiency & lower bills – low U-value glass minimises heat transfer, meaning less energy to heat your home and lower running costs.
- Increased security – multiple glass layers form a strong barrier against forced entry, with visible security features deterring intruders.
- Improved comfort – reduces condensation and eliminates cold spots and draughts for a consistent temperature year-round.
- UK building regs compliance – improves your home’s energy performance in line with current regulations while cutting your carbon footprint.
- Reduced noise pollution – the gap between panes, especially with acoustic windows, blocks sound transfer from outside.
- Increased property value – better energy efficiency and insulation make homes more desirable to buyers in colder climates like Scotland.
No pitch, no strings, no pushy people. Get in touch to book your free, no-obligation, half-hour consultation.
Double-glazed windows suit most property types, including:
- Homes
- Tenements
- Residential Apartments
Note: Some older properties may require specific types of glazing or may not be suitable for this treatment.
Double-glazed uPVC windows combine two panes of glass with a durable, low-maintenance frame.
Key details include:
- Secure hardware
- Excellent Insulation
- Lasting Performance
They suit a huge range of new window styles and are easy to maintain.
In contrast, wooden windows offer a classic, natural finish and good insulation but require regular upkeep, such as painting or sealing, to prolong their lifespan. Both materials can accommodate double glazing, so the main differences are maintenance, style and price.
Bottom line: uPVC windows offer effortless performance and security, while wooden alternatives appeal if you want traditional aesthetics and character.
Yes, new double-glazed windows are worth the upfront price. Here’s why:
- The layers of glass used for glazed windows help to reduce heat loss in the home, maintain a comfortable internal temperature, and keep energy bills low, which can help you save money on heating.
- Double glazing blocks over 90% of UV light, which reduces sun damage to carpets, furniture, and artwork.
- The two glass panes of a double-glazed window can help reduce noise pollution from outside, resulting in quieter homes. If you live by a busy road or in a noisy urban area, double-glazing can help traffic and neighbour noise sound softer inside.
With proper maintenance, new windows can last up to 20 years or more. However, the lifespan of your replacement double-glazing windows can vary depending on factors such as:
- Installation quality
- The type of frame and glass
- Environmental conditions
Spacer bars sit between the two panes of glass in double-glazed uPVC windows to maintain a stable gap and ensure the unit seals properly. This gap traps air or insulating gases, improving thermal efficiency while reducing heat transfer.
Modern warm-edge spacer bars are made from low-conductivity materials that limit heat loss at the glass edge, reducing condensation forming on the inner pane. They also contribute to the uPVC window’s structural integrity and long-term performance.
To maintain double glazing, it is essential to:
- Keep the frames and glass clean
- Regularly lubricate any moving parts
- Check for any signs of damage or wear
- Ensure that any seals or gaskets are intact and in good condition
Still have questions? Get in touch with our installers and we will happily answer your questions.
RePlace Windows cover a number of areas locally and across Central Scotland. Some of our most visited places can be found below
- Glasgow
- Glasgow South/South Side Glasgow
- Glasgow West/West End Glasgow
- Blantyre
- Hamilton
- East Kilbride
- Cambuslang
- South Lanarkshire
- North Lanarkshire
- Paisley
- Cumbernauld
- Kilsyth
Get in touch with us today to discuss your project.
Visit our Showroom
Find out more about our showroom or visit it at this address:
31 Fairfield Place, East Kilbride, G74 5LP
Our Work
Explore our case studies for real-life examples of our A-rated installations. View more reviews and see some of our completed work in our gallery.























































