Replacement Windows

Upgrade your home with double glazed windows.

A+ energy efficient ratings.
Premium security features.
UPVC & aluminium ranges.
20 Year Guarantee from 5 Star
Flexible Finance available from 5 Star

What’s the main difference between UPVC and aluminium windows?

UPVC windows are known for excellent insulation, low maintenance and strong value. Aluminium windows offer a slimmer, more modern frame with outstanding strength and longevity. If you want affordability and warmth, UPVC is ideal. If you prefer sleek sightlines and a premium contemporary look, aluminium is the standout choice. Both deliver outstanding performance – your decision depends on style and budget.

Residence R7 Windows

Common questions about replacement windows

Choosing replacement windows comes with plenty of questions. This guide covers the most common queries homeowners ask about styles, performance, security and installation, helping you make confident, well-informed decisions for your home.

1. Are UPVC or aluminium windows better for energy efficiency?

UPVC naturally provides strong insulation thanks to its multi-chambered design, making it great for reducing heating bills. Modern aluminium systems now include advanced thermal breaks, meaning they can achieve similar A-rated performance. Both materials are highly efficient – UPVC remains the most cost-effective, while aluminium combines efficiency with contemporary aesthetics.

2. Which type of replacement window is the most secure?

All modern UPVC and aluminium windows include multi-point locking, toughened glazing and secure internal beading. Aluminium offers superior rigidity for maximum strength, while flush UPVC windows close tightly into the frame for reduced leverage points. Any system meeting PAS 24 or Secured by Design delivers excellent protection for your home.

3. Which material lasts longer – UPVC or aluminium?

Aluminium typically offers the longest lifespan, often 35-45 years, with minimal ageing. High-quality UPVC provides impressive durability of 25-35 years at a more affordable price. Both resist the UK weather extremely well, but aluminium maintains its colour and shape with almost no long-term change – ideal for a “fit it and forget it” solution.

4. Which replacement window type offers the best noise reduction?

Noise reduction mainly comes from the glazing, but frame design helps too. UPVC’s multi-chambered structure and the tight seals of flush windows deliver excellent acoustic performance. Aluminium frames paired with laminated or acoustic glazing can also significantly cut noise. If soundproofing is a priority, choose high-quality double glazing with laminated glass.

5. What’s the difference in maintenance between UPVC and aluminium?

Both are low maintenance. UPVC windows only needs occasional cleaning and remains durable for decades. Aluminium windows are exceptionally robust, with powder-coated finishes that resist fading and corrosion. It’s the best option for homeowners wanting long-lasting colour stability and virtually no upkeep. Either choice is far easier to maintain than timber.

6. Which windows offer the best overall appearance?

UPVC windows give a familiar, classic look. Flush windows provide a high-end, timber-inspired finish that elevates any home. Aluminium offers the slimmest, most contemporary sightlines – perfect for modern living spaces. For traditional charm choose flush; for modern style choose aluminium; for value-driven versatility choose UPVC.

Still unsure what style of window you want for your home?

Our 5 Star advisors can guide you through every option and help you choose the perfect windows – request your tailored quote today.

5 Star customer reviews

Don’t just take our word for it, read a selection of reviews from our customers in Warwickshire, Worcestershire, Herefordshire and the West Midlands regions and their experiences with 5 Star Windows & Conservatories.

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