uPVC
uPVC Bay & Bow Windows
Add character and space to your home with beautifully crafted uPVC bay and bow windows. Maximise natural light while creating extra room. Bay windows feature a flat front with angled sides, while bow windows create a gentle curve — both adding space, light, and architectural interest.
Features & Benefits
Additional Space
Creates additional internal space with a projecting window structure
Maximum Light
Dramatically increases natural light from multiple angles
Flexible Configurations
3, 4 or 5 section configurations to suit any opening
Full Colour Range
Full Rehau colour and woodgrain range available
Internal Beading
Internally beaded for enhanced security
FENSA Registered
FENSA registered installation with building regs compliance
Our Installations
Technical Specifications
Frequently Asked Questions
What bay window system do you install?
We install Rehau TOTAL70 bay and bow windows with a structural bay pole system, A+ energy rating, and custom angles available. All installations are FENSA registered with a CPA insurance-backed guarantee.
What is the difference between a bay and bow window?
A bay window has a flat front panel with angled side panels, creating a more angular projection. A bow window uses curved panels to create a gentle, rounded projection from the wall.
Do bay windows need planning permission?
Bay and bow window replacements typically do not need planning permission. New bay windows on properties in conservation areas may need approval — our team can advise.
Are bay and bow windows energy efficient?
Our Rehau TOTAL70 bay and bow windows achieve A+ energy ratings with U-values from 1.2 W/m²K with double glazing, and even better with triple glazing options.
How long does installation take?
Bay and bow window installation typically takes one full day, including structural support work and finishing.
How much do bay and bow windows cost?
Final price depends on configuration (3-segment bays through to 5-segment bow windows), glazing spec (double vs triple) and any structural support work needed. Every quote includes FENSA registration and a 10-year CPA insurance-backed guarantee. Request a free no-obligation quote.
Related Guides
In-depth advice from the Vitrum Solutions blog to help you choose with confidence.
How Much Do uPVC Windows Cost in the UK? 2026 Pricing Guide
Complete 2026 uPVC window cost guide — Rehau TOTAL70 casement, bay, sliding sash and French door prices, energy savings, FENSA certification and what affects your quote.
Cost GuideHow Much Do New Windows Cost in the UK? 2026 Price Guide
Honest 2026 UK pricing for new replacement windows. Real cost ranges per window for uPVC, aluminium, sash and bay windows, plus full-house totals and what affects the price.
FAQCondensation on Windows: Causes, Fixes & When to Worry
Why does condensation form on windows? Learn the causes, when it signals a problem, and how to fix condensation inside double glazing.
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