Business Details
Bespoke Timber Windows & Doors in Dartford
Established with over three decades of family tradition, Sash Window Doctor specialises in crafting and installing bespoke timber sash and casement windows alongside external hardwood doors. Our expertise lies in preserving traditional architectural styles while integrating modern glazing and draught-proofing technologies to ensure energy efficiency and compliance with building regulations. Headquartered in Dartford, we serve South East and East London, offering a professional, personable approach that prioritises quality craftsmanship and customer satisfaction. All products are guaranteed for 10 years, Certass-certified, and backed by QANW insurance, reflecting our commitment to regulatory compliance and long-term durability.Our team provides complimentary planning application assistance for conservation and listed buildings, ensuring seamless project execution. With a focus on premium materials like Swedish Redwood Pine and Meranti Hardwood, we deliver meticulously finished installations that balance aesthetic authenticity with functional performance. Our dedication to transparency, competitive pricing, and meticulous attention to detail has earned us a reputation as a trusted partner for homeowners seeking enduring value.
Services
Timber Sash Windows
Casement Windows
Hardwood Doors
Window Refurbishment
Bespoke Glazing
Conservation Planning
Highlights and features
- Over 30 years of family tradition in bespoke timber window craftsmanship
- Certass-certified installations ensuring compliance with building regulations
- 10-year guarantee on all windows and doors with insurance-backed assurance
- Specialists in conservation and listed building projects across London
- Premium Grade A timber with durable, microporous paint finishes
Associations and certifications
- Certass
- QANW
What people say
Fantastic service
High quality product
Trustworthy team
Excellent workmanship
Professional and tidy
Services
Timber Sash Windows
Handcrafted timber sash windows replicate traditional designs while incorporating double glazing and draught-proofing for energy efficiency. Each unit is internally glazed into solid timber profiles for durability, finished with microporous paint offering up to 12 years of protection. Our windows comply with building regulations and conservation requirements, ensuring aesthetic authenticity alongside modern performance.
Casement Windows
Custom-made casement windows in premium hardwood maintain classic slim profiles unachievable with UPVC. Internally glazed for weather resistance, they feature draught-proofing systems and low-iron glass options to maximise natural light. Designed for conservation areas, these windows combine traditional craftsmanship with enhanced thermal efficiency and acoustic insulation.
Hardwood Doors
Bespoke external hardwood doors are crafted from Meranti or Accoya timber, double-glazed and draught-proofed for security and energy efficiency. Internally glazed with no external putty, they resist weathering while maintaining elegant designs. Available in custom shapes and styles, these doors include matching locks and handles for cohesive aesthetics.
Window Refurbishment
Refurbishment services revitalise existing windows through draught-proofing, bead replacement, and sash rebalancing to reduce heat loss by 95%. For listed buildings, we install new single-glazed sashes into sound frames, preserving historical integrity while improving functionality without full replacement.
Conservation Planning
Specialist support for conservation and listed building applications includes complimentary planning assistance. We collaborate with local officers and architects to ensure window replacements maintain original styles, meeting strict heritage guidelines while incorporating modern performance enhancements like acoustic glazing.
People
Peter Denney
Owner & Lead Carpenter
With over 30 years of family expertise in timber window craftsmanship, Peter oversees all installations and consultations. He specialises in conservation projects, ensuring compliance with heritage regulations while delivering modern energy efficiency. His hands-on approach guarantees meticulous attention to detail across every project.
Questions
Do you specialise in conservation area window replacements?
Yes, we provide conservation-approved timber windows with complimentary planning application assistance, ensuring compliance with heritage regulations while maintaining original architectural styles.
What guarantees do your windows include?
All installations come with a 10-year guarantee, Certass certification, and QANW insurance-backed assurance, covering both product quality and regulatory compliance.
Can you refurbish existing sash windows?
We offer draught-proofing, bead replacement, and sash rebalancing services to improve efficiency by 95%, alongside full refurbishments for listed buildings requiring reversible solutions.
What timber types do you use?
We use Grade A Swedish Redwood Pine, Meranti Hardwood, and Accoya for their durability and aesthetic qualities, all treated with preservatives and microporous paint for long-term protection.
Do you work outside London?
While based in Dartford, we serve South East London, East London, and North Kent, providing the same high standards of craftsmanship across all project locations.
How do you ensure clean installations?
Our team prioritises minimal disruption, covering work areas, using dust-reduction techniques, and cleaning daily to leave properties spotless after each installation phase.
