Business Details
46 Years
experience
Bespoke Timber Windows & Doors in Dartford
Sash Window Doctor has been serving residents of South East and East London for over three decades, offering expert craftsmanship in timber sash windows, casement windows, and external hardwood doors. Our small, dedicated team maintains a personal yet professional approach, ensuring every customer receives tailored service and superior quality. We combine traditional techniques with modern innovations in glazing and draught proofing to create energy-efficient products that preserve the original character of period properties. Based in Dartford, we operate across South East and East London, as well as North Kent. Our commitment to quality is reflected in our 10-year guarantee, Certass certification, and QANW insurance-backed assurance. We take pride in our meticulous preparation process, using top-grade timber, double glazing, and durable microporous paints to ensure our windows and doors last for generations.Our team works closely with conservation area officers and architects to maintain historical accuracy, offering complimentary planning application support. Customer satisfaction is at the heart of everything we do, with testimonials highlighting our reliability, attention to detail, and exceptional workmanship. We believe in transparency, providing honest pricing and always delivering on our promises. From initial consultation to final installation, our goal is to exceed expectations while maintaining the traditional aesthetics that define London's heritage architecture.
Services
Timber sash windows
Casement windows
Hardwood doors
Window refurbishment
Conservation planning
Bespoke glazing
Draught proofing
Secondary glazing
Details
- Year established: 1980
Highlights and features
- 30 years of family tradition in sash window craftsmanship
- We use top-grade Swedish Redwood Pine and Meranti Hardwood
- Our windows are double glazed and draught proofed to last
- Certass registered with government approved certification
- We provide free planning application assistance in conservation areas
Associations and certifications
- Certass
What people say
Fantastic service
High quality product
Very professional
Tidy work
Great attention to detail
Services
Timber sash windows
We manufacture bespoke timber sash windows using traditional craftsmanship techniques with modern improvements. These windows maintain the classic appearance of original period windows while incorporating double glazing and draught proofing technology for enhanced energy efficiency. Our windows are carefully handcrafted in top-grade timber to match the original style of period properties, ensuring compliance with conservation area requirements while improving functionality.
Casement windows
Our bespoke casement windows combine traditional aesthetics with modern performance features. Made from premium-grade timbers like Meranti Hardwood and Accoya, these windows are crafted to replicate original designs while incorporating weatherproofing benefits and draught-proofing systems. We ensure internal glazing into solid timber profiles for increased durability, maintaining the slim seamless look of traditional casement windows without compromising on energy efficiency.
Hardwood doors
We create custom-designed hardwood doors that complement the architectural style of period properties. Our doors are crafted from premium Meranti Hardwood, featuring double glazing and draught-proofing technology while maintaining traditional aesthetics. Each door is meticulously hand-finished with warm edge technology to minimize energy loss, and can be customized with various locks and handles to match customer preferences.
Window refurbishment
Our refurbishment services extend the life of existing windows where replacement isn't permitted or necessary. We replace sashes with double-glazed versions while preserving original frames, install draught-proof beads, and overhaul window mechanisms. This cost-effective solution maintains historical accuracy while improving thermal efficiency, particularly valuable for listed buildings and conservation area properties.
Bespoke glazing
We offer specialized glazing solutions including acoustic glass for noisy areas, low-iron glass for north-facing rooms, and acoustic low-iron combinations where both sound reduction and light maximization are needed. All glazing solutions are integrated into traditional timber frames while maintaining the classic appearance of original windows, ensuring compliance with heritage requirements.
People
Peter Denney
Owner
Peter Denney is the founder and director of Sash Window Doctor, bringing over 30 years of family tradition in timber window craftsmanship. With deep expertise in traditional window manufacturing and modern energy-efficient solutions, Peter ensures every project maintains historical accuracy while improving performance. He personally oversees all installations and provides expert guidance from initial consultation to completion.
Questions
Do you specialise in traditional timber windows?
Yes, we specialise in traditional timber sash and casement windows, expertly crafted to replicate original styles while incorporating modern efficiency.
Are your windows suitable for conservation areas?
Yes, our windows meet conservation requirements and we provide free planning application assistance for listed buildings and conservation areas.
What guarantee do you offer?
We offer a 10-year guarantee on all our windows and doors, with Certass certification and QANW insurance-backed guarantees.
Do you offer window refurbishment services?
Yes, we offer window refurbishment including draught proofing, sash replacement and secondary glazing solutions for listed buildings.
What materials do you use?
We use Grade A timber including Swedish Redwood Pine, Meranti Hardwood and Accoya, with long-lasting microporous paint finishes.
Are you certified by any official organisations?
Yes, we are Certass registered, ensuring our work meets building regulations with the necessary insurance-backed guarantees.
