Business Details
32 Years
experience
Trusted Windows and Doors in Derbyshire & Nottinghamshire
Established in 1994, Derwent Sash Windows has built a reputation as a trusted local business serving the East Midlands and surrounding areas. Our expertise lies in supplying and installing premium timber and timber-alternative windows and doors, tailored to enhance the character of residential properties. With over 5,000 completed projects, we combine traditional craftsmanship with modern materials to deliver durable, energy-efficient solutions. Our team of directly employed tradesmen ensures every installation meets exacting standards of quality and precision. Recognised by our 5-star rating on Which? Trusted Trader, we prioritise customer satisfaction through transparent communication and meticulous attention to detail.Our showroom in Ripley, Derbyshire, showcases over 50 products, allowing clients to explore options before committing. As a FENSA-registered company, we guarantee compliance with industry regulations, backed by comprehensive guarantees on our workmanship and materials. Our commitment to excellence extends to using only top-tier hardware and materials, ensuring long-term performance and aesthetic appeal. We pride ourselves on a no-hard-sell approach, offering free, no-obligation consultations and quotations tailored to individual needs. This dedication to quality, service, and customer-centric values has solidified our position as a leader in the window and door industry.
Services
Sash Windows
Casement Windows
Entrance Doors
Bi-Fold Doors
Roof Lanterns
Details
- Year established: 1994
Highlights and features
- We have over 25 years of experience in window and door installations.
- Our directly employed tradesmen ensure consistent quality and reliability.
- We offer free, no-obligation home consultations and quotations.
- Our products are FENSA-registered and Which? Trusted Trader-accredited.
- We use only premium materials with industry-leading guarantees.
Associations and certifications
- FENSA
- Which? Trusted Trader
What people say
Excellent customer service
Professional installation
Quality products
No hard sell
Glowing 5-star reviews
Services
Sash Windows
Our sash windows combine traditional aesthetics with modern performance. Available in engineered timber or wood-effect UPVC, they feature multi-point locking systems, energy-efficient glazing, and bespoke design options. Ideal for period properties seeking enhanced insulation and security without compromising style, these windows reduce heat loss by 74% compared to single-glazed alternatives. Each installation includes period-appropriate architraves and stub cills for authentic finishes.
Bi-Fold Doors
Bi-fold doors create seamless transitions between indoor and outdoor spaces. Crafted from timber, aluminium, or UPVC, they offer thermal efficiency and sleek aesthetics. Customisable configurations allow panels to stack inside or outside, maximising opening space. Our installations include weatherproof thresholds and multi-point locking systems, ensuring security and durability. Perfect for modernising homes while maintaining energy efficiency and visual appeal.
Composite Doors
Composite doors provide superior security and insulation with a 48mm timber core and laminate finish. Available in 12+ colour options, including classic shades like Duck Egg Blue and Chartwell Green, they feature Secured-by-Design accreditation. Customisable elements include stained glass, leaded glass, and low thresholds for accessibility. These doors combine traditional elegance with modern durability, requiring minimal maintenance over decades.
Casement Windows
Casement windows offer versatile ventilation and contemporary design. Manufactured to exact specifications, they include options for timber, UPVC, or aluminium frames with A+ energy-rated glazing. Our installations feature friction hinges for controlled opening angles and enhanced security locks. Ideal for both new builds and renovations, these windows integrate seamlessly with existing architectural styles while improving thermal performance.
Roof Lanterns
Roof lanterns flood interiors with natural light while enhancing architectural appeal. Constructed from thermally efficient aluminium or timber, they include double-glazed units with low-E coatings for temperature regulation. Custom sizes and pitch angles accommodate various room dimensions, from conservatories to kitchen extensions. Our installations ensure watertight seals and structural integrity, complying with building regulations for safety and longevity.
People
Rob Walters
Owner
With over 25 years leading Derwent Sash Windows, Rob Walters oversees operations and bespoke door design. His expertise in traditional joinery ensures authentic craftsmanship in every installation. Rob personally manages complex projects, maintaining direct oversight of quality standards. Under his leadership, the company has completed 5,000+ projects while retaining a family-business ethos focused on customer satisfaction.
Questions
What types of windows do you specialise in?
We specialise in traditional sash windows, casement windows, and timber-alternative UPVC options, all designed to enhance period and modern properties.
Are your installations FENSA-registered?
Yes, all applicable window and door installations comply with FENSA regulations, ensuring building control compliance without additional fees.
Do you offer custom-designed doors?
Yes, we create bespoke engineered timber doors with custom colours, glazing options, and period-appropriate detailing to match individual property styles.
What areas do you serve?
We operate across Derbyshire, Nottinghamshire, and the wider East Midlands, with showrooms in Ripley and West Bridgford.
How long does a typical installation take?
Most window or door replacements are completed in one day, with larger projects like full property installations scheduled over agreed timelines.
What guarantees do you offer?
We provide comprehensive guarantees on both materials and workmanship, including 10-year warranties on Bygone Collection UPVC products and timber finishes.
