Business Details
Expert Glazing Solutions for Homes and Projects Nationwide
Keystone Supplies has established itself as a leading provider of high-performance glazing solutions across the UK. Specialising in the supply and installation of timber, aluminium, and composite windows and doors, we combine traditional craftsmanship with modern innovation to deliver tailored solutions for both heritage and contemporary projects. Our partnerships with industry leaders like Velfac, Rationel, and Cortizo ensure access to cutting-edge products renowned for durability, insulation, and aesthetic appeal.With a dedicated team based in Chesterfield, Derbyshire, we serve clients nationwide, offering bespoke design, expert installation, and a commitment to exceeding expectations through meticulous attention to detail and customer-centric service.
Services
Timber Windows
Aluminium Windows
Composite Doors
Conservatories
Orangeries
Secondary Glazing
Roof Lights
Bi-Fold Doors
Sliding Doors
Internal Doors
Highlights and features
- We partner with industry-leading brands like Velfac and Rationel for premium product quality.
- Our team handles projects from heritage restorations to modern passive house developments.
- Nationwide service with local expertise from our Chesterfield-based operations.
- Bespoke designs tailored to meet specific architectural and functional requirements.
- Commitment to hassle-free installations and meticulous attention to detail.
What people say
Excellent service
Quality of the product was fantastic
Perfectly finished
Changed our home
Attentive eye perfect design
Services
Timber Windows
Timber windows combine natural aesthetics with excellent insulation properties. Available in sash, casement, and flush designs, they suit period and modern properties. Bespoke options include hardwood engineered Meranti or European Oak frames with custom finishes and glazing for energy efficiency.
Aluminium Windows
Aluminium windows offer sleek, contemporary profiles with slim frames and durable weather resistance. Ideal for modern architecture, they feature high-performance glazing and customizable RAL colour finishes. The design maximizes natural light while ensuring structural integrity.
Composite Doors
Composite doors merge timber interiors with aluminium exteriors for enhanced durability and thermal efficiency. Available in traditional or modern styles, they include security-focused features like reinforced frames and multi-point locking systems for superior home protection.
Conservatories
Conservatories create seamless indoor-outdoor living spaces using high-performance glazing and robust frameworks. Designed to complement existing architecture, they feature insulated roofs, energy-efficient windows, and customizable layouts for year-round comfort and aesthetic appeal.
Bi-Fold Doors
Bi-fold doors provide expansive openings that connect interiors with outdoor spaces. Available in aluminium, timber, or composite materials, they feature low thresholds, secure locking mechanisms, and slim profiles to enhance natural light and modern design.
Questions
What types of glazing systems do you offer?
We supply timber, aluminium, and composite windows and doors, including sash, casement, bi-fold, and sliding designs, tailored to heritage and modern projects.
Do you serve areas outside Derbyshire?
Yes, we operate nationwide across the UK, providing bespoke glazing solutions for residential and commercial properties.
Can you handle listed building restoration projects?
Our team has expertise in heritage projects, offering period-appropriate glazing solutions that meet conservation requirements while ensuring modern performance standards.
What is the typical delivery timeframe?
Most orders take 7-8 weeks from confirmation, though bespoke or complex projects may require additional time as specified during consultation.
Are your products energy efficient?
All systems feature high-performance glazing, thermal breaks, and insulation to meet current energy efficiency standards, reducing heat loss and environmental impact.
