Business Details
37 Years
experience
Energy-Efficient Double Glazing in Hemel Hempstead
Established in 1989, Insulating Windows has been a trusted provider of high-performance double glazing and home improvement solutions across Hertfordshire, Bedfordshire, and Buckinghamshire. With over 35 years of experience, our team specialises in energy-efficient windows, doors, conservatories, and roofline products that enhance property value while reducing energy consumption. As members of Certass and Trustmark, we combine industry-leading standards with bespoke design options, including A+ rated glass and six-point locking systems, to ensure security and thermal efficiency.Our commitment to customer satisfaction is reflected in our 20-year product guarantee and a track record of serving over 20,000 satisfied customers. We prioritise transparency, offering free no-obligation quotes and maintaining a Which? Trusted Traders approval, ensuring every installation meets rigorous quality benchmarks.
Services
Double Glazing
Conservatory Roofs
uPVC Windows
Composite Doors
Shutters
Window Shutters
Timber Windows
Aluminium Bifold Doors
Conservatories
Roofline Products
Details
- Year established: 1989
Highlights and features
- We have over 35 years of experience in double glazing installations.
- Our products feature A+ energy-rated glass for maximum thermal efficiency.
- We offer six-point locking systems for enhanced home security.
- We are approved by Which? Trusted Traders and Hertfordshire Trading Standards.
- We provide a 20-year comprehensive guarantee on timber window products.
Associations and certifications
- Certass
- Trustmark
- Which? Trusted Traders
What people say
Energy bills reduced
Professional installers
Excellent aftercare
High-quality products
Secure installations
Services
Double Glazing
Our double glazing solutions use A+ rated glass and six-chamber frames to minimise heat loss and reduce energy bills. The sealed units trap a thermal blanket of air, preventing cold ingress while maintaining sound insulation. Available in uPVC, aluminium, and timber options, these windows suit both modern and period properties, offering security through multi-point locking systems and durable materials.
Conservatory Roofs
We install solid and lantern-style conservatory roofs to transform underused spaces into year-round living areas. Our thermally efficient designs include high-density insulation and weatherproof membranes, eliminating cold spots and condensation. The lightweight materials maintain structural integrity while improving energy ratings, allowing homeowners to enjoy enhanced comfort and property value without planning permission in most cases.
Timber Windows
Our timber windows combine traditional aesthetics with modern performance, featuring Accoya and oak options with 20-year guarantees. The designs meet Window Energy Ratings (WER) A+ standards, using low U-values and internal beading for security. Bespoke colours and dual-finish options ensure compatibility with heritage and contemporary properties, while microporous coatings protect against warping and decay.
Composite Doors
Composite doors integrate GRP skins, polyurethane cores, and multi-point locks for superior security and thermal efficiency. The reinforced frames resist forced entry, while the A+ energy rating reduces heat loss. Customisable with glass panels, colours, and hardware, these doors enhance kerb appeal and property value, backed by a 20-year structural warranty.
Shutters
We supply and install hardwood and uPVC shutters offering thermal insulation, light control, and privacy. The tilt mechanisms allow ventilation without compromising security, ideal for kitchens and bathrooms. Bespoke designs include full-height, caf-style, and tier-on-tier options, with sustainably sourced materials and a choice of stains or paint finishes to match interior decor.
Questions
What areas do you cover?
We serve Hemel Hempstead, Amersham, St Albans, Watford, and surrounding areas in Hertfordshire, Bedfordshire, and Buckinghamshire.
Are your products energy efficient?
All windows and doors feature A+ energy ratings, with double glazing designed to reduce heat loss and lower energy bills.
Do you offer guarantees?
We provide a 20-year comprehensive guarantee on timber products and a manufacturer's warranty for aluminium and uPVC installations.
Can I get a free quote?
Yes, use our online cost calculator or contact us for a free, no-obligation quote tailored to your specifications.
Are your installations secure?
All products include multi-point locking systems, reinforced frames, and toughened glass for enhanced home security.
Do you handle conservatory upgrades?
Yes, we convert conservatories with solid roofs, improving thermal efficiency and creating usable living spaces year-round.
