Business Details
8 Years
experience
Expert Window Consultancy for Period & Listed Properties
Sash Window Consultancy offers specialist window advice to save clients time and money while ensuring quality finishes aligned with existing or proposed buildings. Our expertise spans period and listed properties, both residential and commercial, with services including historic window inspections, repair schedules, and design. As independent consultants, we provide unbiased recommendations without ties to specific manufacturing methods, operating across a wide geographical area. Our team combines decades of industry experience with a partnership approach, collaborating directly with property owners, architects, and project managers. We manage timber window requirements from sourcing to installation, leveraging a network of reliable UK suppliers.Our process begins with on-site assessments or architectural drawing analysis, followed by tailored solutions that preserve building integrity. We specialize in restoring original features, replacing components where necessary, and producing high-quality replacements that seamlessly integrate with retained originals. Founders Neil Jackson and Malcolm Dilnot bring over 55 combined years of expertise in period window restoration, bespoke joinery, and thermal/acoustic insulation. Client testimonials highlight our honesty, integrity, and deep technical knowledge, with projects ranging from stately homes to new builds requiring traditional yet high-performance window systems.
Services
Window Appraisal
Historic Restoration
New Window Installation
Acoustic Upgrades
Project Management
Details
- Year established: 2018
Highlights and features
- We provide independent consultancy without ties to specific manufacturers.
- Our team has over 30 years' combined experience in period window restoration.
- We offer nationwide service across the UK with local expertise.
- Our partnership approach ensures client-focused project management.
- We combine historic preservation with modern thermal and acoustic performance.
What people say
Depth of knowledge
Honesty, integrity
Partnership approach
Expert project management
High-quality replacements
Services
Window Appraisal
We conduct thorough inspections of existing windows and doors, identifying timber decay, glass damage, and structural issues. Our reports include detailed repair recommendations, cost estimates, and compliance with heritage requirements. This service helps property owners and professionals make informed decisions about restoration or replacement options.
Historic Restoration
Our team specializes in restoring original window features using traditional techniques. We repair sash mechanisms, replace damaged components, and reintroduce lost architectural details. This preserves building character while extending the lifespan of historic windows through sympathetic interventions that maintain authenticity and value.
New Window Installation
We supply and install bespoke sash and casement windows for period properties. Our replacements match original designs while incorporating modern thermal and acoustic improvements. Each installation uses high-quality materials and traditional craftsmanship to ensure seamless integration with existing structures and long-term performance.
Acoustic Upgrades
We implement sound attenuation solutions for properties in noisy environments. Our methods include installing slim double-glazed units, sealing gaps, and modifying window designs to reduce external noise by up to 70% while maintaining period aesthetics and compliance with heritage regulations.
Project Management
We oversee window restoration projects from initial assessment to completion. This includes specifying repair works, coordinating with contractors, quality control, and ensuring adherence to budgets and timelines. Our management ensures seamless execution while maintaining architectural integrity and client requirements.
People
Neil Jackson
Director
With over 30 years' experience in period building restoration, Neil specializes in bespoke joinery and window refurbishment. He provides technical expertise for complex heritage projects and advises homeowners and professionals on window solutions that balance tradition with modern performance.
Malcolm Dilnot
Director
Malcolm brings 25+ years of period window restoration experience and a construction industry background spanning four decades. His expertise covers thermal/acoustic insulation and managing large-scale restoration projects, ensuring practical solutions that maintain historical accuracy and structural integrity.
Questions
What types of properties do you specialize in?
We specialize in period and listed properties, both residential and commercial, offering window and door solutions that preserve historical integrity while meeting modern standards.
Do you work with architects and contractors?
Yes, we collaborate directly with architects, surveyors, and project managers to provide technical expertise and project management for window-related works.
What services do you offer for historic windows?
We provide condition assessments, repair schedules, sympathetic restoration, and replacement of historic windows using traditional methods and materials.
Can you help with acoustic and thermal upgrades?
Yes, we incorporate slim insulating glass units and acoustic solutions to improve thermal efficiency and noise reduction in period properties.
Do you operate nationwide?
Yes, we work across the UK with offices in Cheshire and Wiltshire, providing consultancy services for window projects of all scales.
