Grantham's dedicated windows company

Expertise and service at your fingertips
At Avanti Windows Ltd in Grantham we've been in the business of windows for many years. Offering a large selection of styles, double glazing and secondary glazing options, we consistently provide fast installation at an affordable price, and with impeccable service. That's why most of our business comes from repeat customers or word of mouth. Our windows are designed to keep your home warm, quiet and secure whilst being virtually maintenance free. All our windows are ‘A’ rated as standard and use the very latest glass technology.
Two workers installing windows in Grantham
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The full range of options

With our PVC casement windows, a full range of bays, bows, arches and circular windows are available with endless glass designs to match or renew the look to your home. Our sash windows compliment every style of property, giving a classic look with hassle free modern technology. All our coloured windows are available in the full artisan colours
Our team understands the importance of your budget, and you are assured we will work to stay within this, advising you in advance of any changes.

Secondary glazing

Secondary glazing adds another inside window in addition to your existing external ones. These units improve thermal performance and security, and reduce noise. Although most secondary frames are white, we are able to offer any RAL colour.
Our secondary windows are made with strong slimline aluminum framework so frames are invisible from the outside. 
Contact us in Grantham to discuss secondary glazing, windows or doors options for your home.

Excellent service

Avanti Windows Ltd is a service-oriented company. This means that all of our Grantham based team is trained in customer service, so you will receive the high level of service that you expect.
All of our work is carried out in a professional, friendly manner. You can be sure the services we provide for your windows and doors will be done to the highest standards and with the utmost care.

For a free quote call: 01476 579058

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