Reputation for providing quality

Established in 1988, Warmlite has achieved a reputation for providing quality and service that is hard to compete with.

Warmlite are a member of the Glass and Glazing Federation, FENSA, The Energy Saving
Trust and Trust Mark which is a Government Endorsed Standard.

We provide a competitive quote that offers top quality products and value for money. We specialise in Timber, Aluminium, Composite and PVCu products including Vertical Sliding Sash Windows, Doors, Bi-folding and Sliding Doors, Porches, Orangeries and Conservatories, Soffits, Fascias and Guttering and Flat Roofs.

At Warmlite we employ all our own people. We do not use self employed sub contractors. We believe this benefits our customers as our Installation teams will fit your windows and doors to the highest quality standards.

Taking great care whilst working in your home, our skilled and experienced Installation teams will lay dust sheets over your carpets and furniture. With great care we will remove your old windows and doors and take them away. We will also ensure that your home is left clean and tidy.

Our reputation is very important to us. The vast majority of our work comes from existing customers wishing to have more work done and recommendation. From the moment you contact us to the completion of your order, your project will be dealt with in a professional and courteous manner.

Warmlite are members of the following organisations

Glass and Glazing Federation

As a member of the Glass and Glazing Federation we work to A Code of Good Practice and to the Technical Standards laid out in the Federation’s Glazing Manual.

We have been vetted to ensure quality of service: this vetting process includes making a site visit to our premises, checking two years of certified or audited accounts and taking up references. Our standard of service to our customers is continually monitored and regulated.

Deposit Indemnity Scheme

Deposits placed with GGF Members are protected by an indemnity scheme, which safeguards deposits up to £3,000 or 25% of the contract price, whichever is the lower.


We provide you with a fully comprehensive minimum 10 year Guarantee and up to 25 years on some products and installations. In addition, you will receive an additional underwritten indemnity Insurance guarantee administered by the Glass and Glazing Federation.


All replacement window and door installations need to comply with current Building Regulations Approved Document L1B (currently conservatories and porches are exempt). Warmlite is a FENSA registered company- self certification compliance. Within a few weeks of completion of the installation FENSA will issue you with a certificate of compliance.

Our Fensa Registration Number is 18766.

Energy Saving Trust

Have smaller energy bills and reduce your carbon footprint. Energy-efficient glazing reduces heat loss through your windows and as well as keeping the heat in, energy efficient products will insulate your home against outside noise.

Call us on 020 8399 3377 or email us at

Contact us to find out if we cover your area and be sure to get directions to our showroom in Tolworth.