uPVC Single Doors

Shop uPVC Doors from Crystal Direct

Upgrade your home with our new range of high-performance uPVC doors from Crystal Direct — one of the UK’s most respected manufacturers of energy-efficient, stylish, and secure external doors. Available now at Sterlingbuild.co.uk, these premium-quality single doors are ideal for homeowners and tradespeople looking for durability, value, and long-lasting performance.

Why Choose Crystal Direct uPVC Doors?
With over 30 years of expertise, Crystal Direct designs and manufactures premium uPVC doors at its advanced Hertfordshire facility. Each door combines modern performance with stylish design, offering the perfect balance of security, energy efficiency, and low maintenance. Whether you’re updating an entrance or specifying for a new build, these doors deliver lasting quality at an affordable price.

Standout Features of Our Crystal uPVC Doors:

High Energy Efficiency – Available with double glazing (U-value ~1.4 W/m²·K) or triple glazing (U-value ~1.0 W/m²·K) for excellent insulation and reduced bills.
Stylish & Flexible Designs – Choose from full-glass or half-glass panels, in clear or obscure glass, to suit privacy and light needs.
Premium Finishes – Frames available in classic White or contemporary Grey with a crisp white interior.
Robust Construction – Built with reinforced cores and durable materials for long-term strength and weather resistance.
Enhanced Security – Multi-point locking systems, anti-bump cylinders, and reinforced hinges ensure peace of mind.
Effortless Installation – Supplied with cill, handles, trickle vents, and loose glazing for straightforward fitting on site.
10-Year Guarantee – Every door is backed by a manufacturer’s warranty for lasting reliability.
Fast UK Delivery – Reliable delivery nationwide in 10–12 working d

Why Buy from Sterlingbuild?
At Sterlingbuild, we’re proud to be an authorised retailer of Crystal Direct doors, giving you access to premium home improvement solutions at competitive prices. Our online experience is built for both DIYers and trades, with:

Simple product selection and customisation
Competitive pricing with no hidden extras
Dependable delivery from strong UK stock
Expert customer service and after-sales support

Find Your Ideal Door
Browse our range of Crystal Direct uPVC doors today and choose the perfect size, finish, and glazing option for your project. With superior energy performance, modern security, and timeless style, these doors are built to enhance any home.