Welcome To Harlequin Glass Ltd

Quality Double Glazing Hitchin

Start Your Quote

uPVC Windows, Doors and Conservatories in Hitchin and surrounding areas.

uPVC Windows

View our uPVC Window Range

Double Glazed Windows in Stevenage, Hitchin, Letchworth, St. Albans and across Hertfordshire.

uPVC Doors

View Our Door Range

Front Doors, Exterior Doors and Composite Doors in Stevenage, Hitchin, Letchworth, St. Albans and across Hertfordshire

uPVC Conservatories

View Our Conservatory Range

Stunning Conservatory Range in Stevenage, Hitchin, Letchworth, St. Albans and across Hertfordshire.


Start Your Free Double Glazing Quote Today!

uPVC Windows

uPVC Windows

Our double glazing has innovative features embedded inside the profile and glass to enhance energy savings.

Find Out More
uPVC Doors

uPVC Doors

These premium products are protected by a high-security Yale locking mechanism, keeping you safe.

Find Out More


This double glazing are virtually self-cleaning. An easy clean feature is available with some models.

Find Out More
Contact Us

Contact Us

Contact us via phone or email if you have any questions, or if you'd like us to arrange an appointment / survey.

Contact us

Quality Double Glazing in Hitchin

Premium Double Glazing in Hitchin

Here at Harlequin Glass, we provide outstanding double glazing to our customers throughout Hitchin. We utilise the leading profile systems for our double glazing.

We have fostered over thirty years of experience in our tenure, giving us the right knowledge and skills to carry out your home improvement.

We offer the very best double glazing in Hitchin and surrounding areas, so give us a call to find out more about our prices, or learn more about our products by reading on.

High-Grade uPVC Profile

We use the premium profile of UK manufacturers Liniar, which features a thermally-broken multi chambered design, allowing your double glazing to retain heat inside your property. Although our uPVC is high-quality, it is also 100% recyclable, meaning that if you decide to upgrade your windows, they will be put to another fantastic use including new double glazing.

Our impressively thermally-efficient double glazing will help you reduce your carbon footprint in more ways than one. Our high-quality uPVC products offer great weatherproofing to prevent water ingress and cold draughts from getting into your home.

While your home stays warmer for longer, you’ll rely less heavily on your central heating system, needing to use less energy, reaping fantastic benefits for your bills, but in addition reducing your carbon footprint and the negative impact on the environment.

Meanwhile, using uPVC tilt and turn windows as just one example, a tilt-only function will provide secure ventilation during the night when it’s too warm to sleep well. You’ll be able to turn off the noisy air conditioning and sleep like a baby, whilst lowering your carbon footprint!

The Liniar profile is precision engineered to provide maximum thermal-efficiency, proving most cost-effective in the long run. For example, it is compiled from a high-quality EPDM gasket, a patented cost-extruded bubble gasket, a unique glazing flipper and Passivhaus approved thermal dam. This improves the weatherseal and enhances weatherproofing.

The high-quality design possesses incredibly slim sightlines for maximum natural light exposure and best possible aesthetics. Its high grade uPVC composition means your home shall not only appear stylish but it will be protected by robust, durable double glazing.

Double Glazing Hitchin

Premium Aluminium Profile

Our top of the range aluminium double glazing feature a patented security bead design, which means your home will protected. We offer high-security shootbolt locking systems to enhance security of your property with double glazing. These are tested to BS7950 standards.

We use the highly innovative profile design of Polyframe for our aluminium double glazing. The high quality profile offers a sleek design with the impressive strength of high-grade aluminium. You’ll benefit from a highly secure set of windows and doors that exude style.

The profile is entirely weather-resistant, providing a low maintenance option for your double glazing in Hitchin. Our high-quality Polyframe profile has been tested to the standards of BS6375 Pt1 Severe Exposure Category 2000. Double glazing offers thermally-broken frame, achieving incredible energy-efficiency as your home stays warm all year around.

Double Glazing Hitchin

Colour Options

We offer over 250 RAL colours to finish your new double glazing in a style that complements your home and personality. Whether you’re completing brand new aluminium bi-fold doors, or if you’re painting the finishing touches of beautiful French windows, our colour matches shall blend seamlessly with your property.

Our full batch of colours allows you to create a bespoke design, for instance, we offer high-quality woodgrain foils that match the style of timber, and will blend delightfully with the outdoors, or, for something more contemporary, why not choose to add some chrome to your home?

Double Glazing Prices Hitchin

Double Glazing Prices Hitchin

Take a look at our fantastic products via our website, and when you’re finished, why not visit our online quoting engine and obtain a free, no obligation to buy quote on double glazing today?

Alternatively, if you would like to know any more information that isn’t available on the site, please do not hesitate to get in touch by using our online contact page. Follow the simple instructions and we’ll give you a call immediately.

View our Double Glazing Brochure

View our Composite Door Brochure

Double Glazing in 3 Steps

At Harlequin Glass Ltd our install working process is always kept very simple.
We consistently provide a high quality service, with exceptional products to match.

Start Your Quote

Get competitive double glazing prices in Hertfordshire using our online quoting engine. Start your online quote today.

Talk To The Experts

Speak to our friendly advisors - we can discuss your specifications to find the perfect double glazing for you.

Install & Enjoy

Our team ensures there's very little upheaval to your daily life. Enjoy a hassle-free installation from Harlequin Glass Ltd.



Online Double Glazing Prices

Start your online quote today for competitive double glazing prices in Hertfordshire!