Business Details
16 Years
experience
Emergency
services
Trusted Window & Door Installations in London
Established in 2010, we are a family-run business with over 15 years of experience in double glazing installations and repairs across South East London. Our customer-first approach has earned us a strong reputation through referrals and recommendations. We specialise in windows, doors, porches, and bi-folding solutions, serving both residential and commercial properties. Our rapid response team operates across South East and Central London, prioritising quality materials and energy-efficient solutions. We are FENSA registered installers and members of the Glass & Glazing Federation International. Our commitment to transparency, competitive pricing, and post-installation support ensures long-term client satisfaction.With a portfolio spanning sash windows, composite doors, and bespoke porch designs, we combine technical expertise with tailored service. Our team's proficiency in German-engineered Kommerling profiles guarantees durable, thermally efficient installations. Customer testimonials consistently highlight our professionalism, attention to detail, and ability to complete projects with minimal disruption. We offer free consultations and design services, ensuring each solution aligns with individual property requirements and aesthetic preferences.
Services
Double Glazing
Sash Windows
Bi-Folding Doors
Privacy Glass
Porches
Patios
Composite Doors
UPVC Windows
Porch Installations
Window Repairs
Details
- Year established: 2010
Highlights and features
- Family-run business with 15+ years of local expertise
- FENSA-registered window installers for compliance assurance
- Free design consultations and site surveys
- Rapid response team for urgent glazing needs
- Members of Glass & Glazing Federation International
Associations and certifications
- FENSA
- Glass & Glazing Federation International
What people say
Professional and efficient
Excellent workmanship
Highly recommended
Reasonable prices
Prompt service
Services
Double Glazing
Our double glazing solutions combine German-engineered Kommerling profiles with Low-E glass technology to enhance thermal efficiency. These units reduce energy bills while minimising noise pollution for London properties. Each installation includes draught-proofing systems and multi-point locking mechanisms for improved security and comfort.
Sash Windows
Handcrafted uPVC sash windows replicate classic aesthetics while offering modern performance benefits. Available in white, black, and wood-effect finishes, these windows feature tilt-and-turn mechanisms for easy cleaning and ventilation. Our installations maintain period authenticity with enhanced durability and energy efficiency.
Bi-Folding Doors
Aluminium bi-folding doors create seamless transitions between indoor and outdoor spaces. With slim frames and multi-point locking systems, these doors maximise natural light while maintaining security. Available in 15+ RAL colours, they suit both contemporary and traditional properties across London.
Composite Doors
Thermally efficient composite doors feature solid timber cores and 7-point locking systems for maximum security. These low-maintenance doors resist warping and fading, available in realistic wood grain effects. Each installation includes draught-excluding thresholds and reinforced frames.
Porch Installations
Custom-designed porches add property value and weather protection. Constructed from uPVC or aluminium, our porches incorporate energy-efficient glazing and non-slip flooring options. Available in traditional and modern styles, each structure undergoes structural calculations to ensure compliance with building regulations.
Questions
What areas do SDG Windows cover?
We serve South East London, Central London, and surrounding areas including Kent and West London.
Are your installers FENSA registered?
Yes, all our window installations are completed by FENSA-registered professionals for building regulation compliance.
Do you offer emergency glazing services?
Our rapid response team provides emergency repairs for broken glass and damaged window mechanisms.
What window materials do you supply?
We offer uPVC, aluminium, and composite materials across our window and door product ranges.
Can I see examples of your work?
Our Sydenham showroom displays full-sized window and door installations for customers to inspect quality firsthand.
Do you provide guarantees?
All installations come with manufacturer warranties and our own workmanship guarantee for added peace of mind.
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Reviews (2)
Pauline Weir
Dec 18, 2014
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SDG put new windows into my flat in sydenham - windows installed in 2 days, and when FENSA wanted things changed they were quick to fix the problem and then even let the FENSA inspector into flat when I couldn't be there. Thank you for all your help, would recommend SDG windows to everyone!
Zoe Lin
Sep 17, 2014
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SDG installed 7 windows and 2 main doors for my house this summer. They got the job done properly. Will recommend SDG Windows to anyone who need quality windows at a fair price. Very happy experience.
