About Our Casement Windows

Our uPVC casement windows are the most popular option in our range of casement windows. Available in a variety of window styles, from bottom to side-opening, they are ideal for modern and traditional properties across Glasgow.

Our casement windows are crafted to suit your specific needs. Choose double-glazed casement windows for thermal efficiency or flush windows for a sleek finish.

When you choose RePlace Windows Limited for your uPVC casement window installation, you benefit from:

  • Low-maintenance materials
  • Maximum thermal efficiency and A-rated energy efficiency
  • Made-to-measure frame for a tailored fit
  • A free technical survey before installation
  • Quality installation backed by our 10-Year Guarantee
  • High performing A+ glass up to 136% warmer than standard double glazing.

Each window boasts a precision-crafted frame, allowing for easy cleaning and fire safety access while remaining stylish and practical.

Benefits of uPVC Casement Windows

Casement windows are designed with ease and performance in mind. Their one-handle operation, lock-open functions and safety restrictors are practical and safe for all ages.

Better Ventilation

Thanks to their outward-opening design, all our casement windows offer improved airflow and excellent ventilation. Compared to sliding sash or fixed windows, casement units are better for circulation, making them ideal for any space that needs a fresh breeze.

Excellent Energy Performance

Casement windows deliver excellent energy efficiency by forming a tight seal when closed. This superior insulation reduces heat loss and energy consumption, lowering energy bills and keeping your home warm during cold winter months.

Enhanced Security

Casement windows feature high-security multi-point locking systems for increased home security. Built with durable uPVC and reinforced hinges, our windows are made to withstand forced entry attempts while maintaining a refined appearance.

Easy to Operate

Designed with the homeowner in mind, casement units operate effortlessly every time. Modern mechanisms ensure smooth opening and closing, making them a practical and attractive window solution for any property and room.

Versatile Design

Available in a wide range of finishes and designs, our triple-glazed windows are built to suit your personal preference.

Compatible with Triple & Double Glazing

Our casement windows are compatible with double and triple glazing.

  • Double glazing uses two panes of glass separated by a layer of gas or air. This significantly improves thermal insulation compared to single-pane windows.
  • Triple-glazed units take insulation to the next level by incorporating three panes of glass and two insulating layers of gas or air. This configuration provides superior energy performance, reducing the U-value (a measure of heat transfer) even further than double-glazed windows.

Get in touch with our team if you have any questions.

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Frequently Asked Questions

Browse our answers to some of the most common questions about uPVC casement windows.

Casement windows are hinged at the side or at the top and open outward like a door, usually with a crank mechanism. They are often used as a replacement for traditional sliding windows.

Flush casement windows offer a neater, integrated look, as the glass is level or “flush” within the window frame. A standard casement window’s hinges are exteri

Our casement units are made from robust uPVC, known for its durability, increased security, energy efficiency and sleek appearance. uPVC has become a popular choice among homeowners as it withstands inclement weather and does not warp, rust or rot. Compared to other materials like aluminium and timber, uPVC tends to be more aesthetically pleasing and boasts better thermal performance.

Cleaning and maintaining casement units is relatively easy. Simply wipe them down with a soft cloth and mild soap and water as needed. This method ensures there is no damage to the uPVC window frames or mechanisms.

Yes, casement units can be very energy-efficient if correctly installed and made from high-quality materials. Look for windows with low-E coatings, double-paned glass, and insulated frames to maximise energy efficiency and meet the latest building regulations.

In general, high-quality casement windows can last anywhere from 20 to 30 years or more. The lifespan of casement units depends on several factors, including the quality of the materials, the installation process, environmental factors, and how well they are maintained.

Looking for a casement window replacement?
Contact RePlace Windows today.

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RePlace Windows: Premium uPVC Casement Windows

Since launching in 2014, RePlace Windows has been a leading supplier and installer of new windows and doors in Glasgow and the surrounding areas. Owned and managed by Scott and Kai—industry veterans with over 30 years of combined experience—we are known for our customer service and premium products.

Upgrade your home with expertly manufactured and installed uPVC casement windows. We guide first-time home renovators through choosing the ideal casement replacement windows and doors.

Request a free quote today and start reducing your energy costs.

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Other Services

RePlace Windows provides a variety of windows in both single and double panel options. Whether you’re seeking traditional sash designs or modern flush finishes, we offer a huge range to enhance your home’s appearance and safety.

Explore our full range of products for expert home improvements with unobstructed views.