uPVC Casement Windows

Our uPVC casement windows are BFRC-certified and A-rated as standard in double glazing, or A+ in triple glazing. Double glazed uPVC casement windows have a thermal efficiency value, or U-value, of 1.3 and triple glazed uPVC casement windows have a U-value of 1.0. The lower the value, the better the thermal efficiency.

Upgrading from pre-2002 uPVC double-glazing to A-rated windows from Anglian could save you £184.25 off your annual energy bills*. That's more than £1800 over 10 years.

New energy efficient uPVC casement windows are one of the best options on the market to reduce heat loss. We fill the thin gap between our windows with an inert gas. These colourless, insulating gases have the added effect of helping to reduce sound through the glass of a window. The airtight double weather seal reduces draughts when closed, too.

*Source Glass and Glazing Federation. A typical detached house has 23.7m2 of windows. Based on replacing uPVC double-glazed windows with a 12-14mm sealed unit and gas central heating with A-Rated thermally efficient windows.

Our uPVC casement windows are designed with the highest level of security to keep your home safe. Certified to British Standards and PAS 24 Kitemarks, with a range of modern anti-burglar features as standard, including:

• An exclusive excluder device in the hinge cavity of the window. The two parts of the excluder interlock in the event of attempted forced entry.
• Unique and exclusive high grade shootbolt security system, designed to create a ‘whole unit’ preventative barrier against forced opening.
• Multi-point locking systems engage at several points along the window frame. This helps to distribute force and make break-ins harder.
• Lockable handles to prevent unauthorised opening from the outside come as standard. This provides an extra layer of security to prevent tampering or unauthorised entry.
• Multi-chambered uPVC construction with welded joints for added strength.
• Where legally required, the window glass is laminated, making it shatter-resistant to provide extra protection against break-ins.

Our insurance-backed guarantees mean they remain valid until they run out. Not all window companies offer this, so be on the lookout. Under the terms of the guarantee, you are covered for the cost of a partial or complete repair of your windows.

• 10-year guarantee on frames, parts and labour.
• 15-year guarantee on the sealed glass unit. The sealed unit is covered in the event of a ‘blow out’, where condensation appears between the panes of glass.
• A BBA certificate on our White Knight uPVC casement windows means they meet or exceed building regulations and are made to the highest manufacturing standards.
• Secured by Design approved: this Police accreditation means our uPVC casement windows help keep buildings more secure from crime.
• FENSA and Glass and Glazing Federation (GGF) accredited, which ensures our uPVC casement windows are installed to the latest building regulations.

Made from the most popular window material, uPVC casement windows are the most versatile. This makes them ideal for the whole house. To use a cliché, as houses vary so much in design and age, there’s no one size fits all. With different-shaped windows, decorative glass options and colours available, they are made to measure for your home and individually priced.

• Min height 195mm (if width is 195mm then min height is 370mm)
• Min width 195mm (if height is 195mm then min width is 370mm)
• Max height overall frame 3000m
• Max width overall frame 3000m

Start your project today and enjoy it for longer. Spread the cost of your new uPVC casement windows with a low deposit of just £249 (11.9% APR) subject to affordability, status and lending criteria.

Interest is charged from the date the account is opened. Current rate as of August 2025.

Anglian Home Improvements is a trading name of the ASHI Group Limited and is a credit broker, not a lender. Registered office: Liberator Road, Norwich, NR6 6EU. Registered in England No. 2540020. Authorised and regulated by the Financial Conduct Authority for consumer credit activities.