Business Details
36 Years
experience
Trusted Window Specialists in London and the South East
Established in 1990, SashCo is a family-run business specialising in window solutions for domestic and commercial clients across London and the South East. Our expertise spans sash window repairs, refurbishments, and installations of bespoke windows in wood, UPVC, aluminium, and steel. We prioritise informed decision-making for clients, offering comprehensive surveys and free consultations within a 5-mile radius.With over three decades of experience, we combine traditional craftsmanship with modern energy-efficient solutions, serving conservation areas and contemporary properties alike. Our team works closely with manufacturers to ensure high-quality products that align with building regulations and client needs. We pride ourselves on transparency, professionalism, and delivering value through tailored window solutions.
Services
Window Repairs
Sash Window Installations
UPVC Window Fitting
Double Glazing
Triple Glazing
Bespoke Window Design
Window Refurbishment
Conservation Area Solutions
Energy-Efficient Windows
Trade Window Supply
Details
- Year established: 1990
Highlights and features
- Family-run business with 30+ years of window expertise
- Comprehensive surveys and free local consultations
- Specialists in heritage sash window repairs and replacements
- Bespoke solutions for conservation areas and modern properties
- Energy-efficient windows meeting UK building regulations
Associations and certifications
- FENSA
What people say
Extremely professional
Very happy with windows
Good experience
No hidden fees
Expert recommendations
Services
SashCo Window Installations
Specialist installation of traditional and modern sash windows tailored to property style. We supply and fit timber, UPVC, and aluminium sash windows meeting conservation requirements. Our precision fitting ensures optimal energy efficiency and aesthetic compatibility with historic and contemporary buildings.
Window Repairs
Comprehensive repair service for all window types including sash window restoration. We address draughts, rot, and operational issues while preserving original features. Cost-effective solutions extend window lifespan without compromising heritage value or security standards.
UPVC Window Fitting
Modern UPVC window installations combining traditional styling with low-maintenance benefits. Our tilt-and-turn designs facilitate easy cleaning and enhanced security. Available with decorative horns and Georgian bars to match period properties while exceeding current insulation standards.
Double Glazing
Energy-efficient double glazing solutions reducing heat loss by up to 94%. Our units achieve U-values below 1.6 as required by building regulations. The cost-effective option improves thermal performance while maintaining acoustic insulation and structural durability for residential and commercial properties.
Triple Glazing
Premium triple glazing offering superior thermal efficiency and soundproofing. With the lowest U-values available, these windows provide maximum security and durability. Ideal for noise-sensitive areas and properties requiring exceptional energy conservation without compromising on design flexibility.
Questions
Do you specialise in heritage window replacements?
Yes, we specialise in sash window replacements for Georgian, Victorian, and Edwardian properties, including conservation area requirements.
Can you repair existing windows?
Absolutely - we assess whether repairs would be more cost-effective than replacements, offering full refurbishment services where appropriate.
What areas do you cover?
We operate across London, Surrey, and Kent with free consultations within 5 miles of our Keston base.
Are your windows energy efficient?
All our windows meet current building regulations with U-values below 1.6, including triple glazing options for maximum efficiency.
Do you work with trade customers?
Yes, we supply trade customers nationwide with quality windows at competitive prices, including bulk order discounts.
How long have you been in business?
We've been supplying and installing windows for domestic and commercial clients since 1990.
