What are the opening hours?

Monday 10am - 4pm Tuesday 10am - 4pm Wednesday 10am - 4pm Thursday 10am - 4pm Friday 10am - 4pm Saturday 10am - 4pm Sunday 11:30am - 3:30pm

Window Mart

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United Kingdom
Horsham
Window Mart

Professional installers of uPVC Conservatories, Orangeries, Solid Roofs, Windows & Doors. We have our own building team for groundwork and brickwork.

Established in 1998, Window Mart have gone from strength to strength culminating in the opening of our new show complex at Old Barn Garden Centre near Horsham. All Window Mart staff are employed by the company and drive fully equipped company vehicles. In our showroom an extensive range of conservatories, doors and windows can be viewed. Excellence is our commitment and we are here to make sure yo

u get the very best in service and quality. Window Mart Commercial Ltd is an Introducer Appointed Representative (Financial Services Register No. 1028684) of Phoenix Financial Consultants Limited (Phoenix). Phoenix is a credit broker, not a lender. Phoenix is authorised and regulated by the Financial Conduct Authority (FRN: 539195), and offers finance from its panel of lenders. All finance subject to status and credit checks.

11/09/2026

First impressions start at the front door. 🚪

A new composite door can completely change the look of your home — while also improving security, insulation and weather protection.

From classic to contemporary, Window Mart offers a huge choice of styles, colours, glazing and finishing touches to make it your own.

And you can start designing yours from the sofa. 👇

Try our online Composite Door Designer to experiment with different styles and get an idea of pricing.
https://bit.ly/3TaWnvK

Or come and see us at our show complex at Old Barn Garden Centre, near Horsham.

📞 01403 711 936

28/08/2026

If your windows are old, they could be affecting more than just how your home looks.

Modern energy-efficient windows can help:

✔ Reduce heat loss
✔ Improve home security
✔ Cut outside noise
✔ Reduce condensation
✔ Refresh the appearance of your property

If you're unsure whether it's time to replace yours, we'd be happy to offer friendly advice and a free quotation.

20/08/2026

Choosing new windows, doors or a conservatory is a big investment.

That's why we always recommend visiting our showroom.

You'll be able to:

• Compare products side by side
• See colours and finishes in person
• Try doors and hardware
• Ask questions without any sales pressure

Our team are tradespeople, not salespeople, so you'll receive honest advice based on what's right for your home.

Come and see us at Old Barn Garden Centre, Dial Post. 01403 711 936

12/08/2026

Your front door is one of the first things people notice.

At Window Mart we offer over 50 composite door styles in a huge range of colours, glazing options and hardware.

✔ Secure
✔ Energy efficient
✔ Low maintenance
✔ Designed to suit every style of property

Not sure what you'd choose?

Visit our showroom in Horsham or try our online Door Designer - https://bit.ly/4pY95tY see your perfect entrance come to life.

05/08/2026

Building an extension doesn't have to mean months of disruption.

The hup! Building System is a modern way to create extra living space that's:

✅ Built in weeks, not months
✅ Up to five times more energy efficient than the average UK home
✅ Manufactured in the UK
✅ Suitable for extensions, conservatory upgrades and garden rooms

If you've been putting off extending your home because of the time and mess involved, it's worth discovering what hup! can offer.

Contact Window Mart on 01403 711 936 for a free, no-obligation quotation.

📍 Visit our showroom near Horsham.

28/07/2026

Could your windows be costing you money?

Older or poorly performing windows can allow heat to escape, making rooms feel colder and increasing the amount of energy needed to keep your home comfortable.

Modern energy-efficient windows can improve insulation, reduce draughts and provide additional security for your property.

Window Mart supplies and installs energy-efficient replacement windows throughout Horsham and West Sussex.

Contact us for friendly advice and a free quotation.

26/07/2026

Is your conservatory too hot in summer and too cold in winter?

Replacing an older conservatory roof with a modern insulated roofing system can help create a more comfortable room that can be used throughout the year.

Window Mart provides conservatory roof replacement services across Horsham and West Sussex, with a choice of roofing solutions to suit different properties and budgets.

Speak to our team to discuss the options available for your conservatory.

22/07/2026

Thinking about extending your home?

The hup! Building System offers a modern way to create additional living space, with projects completed in weeks rather than months.

It can be used for new extensions and to transform older conservatories into warmer, more comfortable rooms that can be enjoyed throughout the year.

Window Mart installs hup! extensions across Horsham, Crawley and West Sussex.

Find out more about the hup! Building System and request a free quotation.

21/03/2026

Join our team as a Showroom Assistant!
We're seeking a friendly, reliable individual to work alternate weekends 10am-4pm Saturday & 1130 to 1530 Sunday £84/day
the Ideal candidates will benefit from some building industry knowledge but full training will be given
Please call 01403 711936 speak to Martyn

Address

Old Barn Garden Centre Worthing Road, Dial Post
Horsham
RH138NR

Opening Hours

Monday	10am - 4pm
Tuesday	10am - 4pm
Wednesday	10am - 4pm
Thursday	10am - 4pm
Friday	10am - 4pm
Saturday	10am - 4pm
Sunday	11:30am - 3:30pm

Telephone

+441403711936

Website

https://www.window-mart.co.uk/

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