Commercial Windows Installation Sussex

Commercial Projects

We have extensive experience managing larger commercial projects for housing, apartments, schools and offices.

At Window Mart we have extensive experience in the management and installation of replacement windows and doors for schools, apartments and larger projects in Surrey, Sussex, Kent and London.

Window-Mart is a well-respected fenestration and energy efficiency company with a construction industry pedigree. We provide a quality service, with comprehensive construction knowledge and a unique, honest working relationship with our clients.

Whilst Window-Mart operates in several distinct markets (Local Authorities, Education, Main Contractors and Residents & Private Landlords), our skills and products are clearly transferable. Our vastly experienced team has outstanding construction expertise which enables Window-Mart to undertake any size project. By fully understanding our market sectors, we can tailor-make our procedures to suit any specific project.

commercial windows and doors. A three-storey brick block of flats with large uPVC windows, facing a well-kept grassy lawn bordered by a pavement and short posts in Horsham. Trees are visible in the background.
commercial windows A brown, arched building in West Sussex with a large semicircular uPVC window above the central door, flanked by two rectangular windows.

Built to Last, Backed by Guarantees

From full commercial windows and doors replacement to new-build commercial window installation, we work directly with local authorities, main contractors and private landlords to deliver projects on time and to specification. Our commercial glazing services cover everything from single-unit replacement through to complete window and door schemes across multi-unit developments.

Every commercial windows replacement project is backed by our 10-year guarantee and Price Match Guarantee, giving commercial clients the same assurances as our residential customers. Because our team, including our own groundwork and brickwork specialists, is directly employed rather than subcontracted, you get a single accountable point of contact from quote through to completion.

For schools and local authority buildings, window replacement is often carried out alongside roofline maintenance; our fascias and soffits service complements commercial window installation to keep the whole building weatherproof and low-maintenance.

Would you like to see our range of brochures?

FAQ Commercial Windows

What types of commercial properties do you work on?

We work on a wide range of commercial and multi-occupancy properties, including schools, apartment blocks, local authority housing and offices, delivering everything from commercial window installation to full commercial windows and doors replacement.

Do you work with local authorities and main contractors?

Yes. We work directly with Local Authorities, Education providers, Main Contractors, and Residents & Private Landlords, tailoring our procedures to suit each specific sector.

What areas do you cover for commercial projects?

We manage commercial glazing and window replacement projects across Surrey, Sussex, Kent and London.

Is commercial window installation covered by a guarantee?

Yes — all commercial windows replacement work is backed by our 10-year guarantee, and we offer a Price Match Guarantee on like-for-like quotations.

Can you handle large-scale or multi-unit commercial projects?

Yes. We have experience managing larger commercial projects, including apartment blocks and multi-unit developments, using our own in-house team for groundwork and brickwork alongside window and door installation.

Why Choose Us?

Price Match Guarantee

Our Price Match Guarantee means we will match any like for like quotation with the same features, specifications and warranties.

All Seasons Living

Combine the light and airy feel of a conservatory, yet with the solid, tiled roof, and energy efficiency of an extension.

Over 50 Front Doors

We have a wide range of over 50 white, coloured & woodgrained Front PVCu and Composite Doors to choose from. Starting from just £645.

FREE Quotation

Whatever your requirements, please contact us now for a comprehensive FREE no obligation quotation, or just for some friendly advice.

Best Price Promise GUARANTEE*

*Provide us with a Like for Like quotation with the same features, specifications and warranties from a comparable company,and we will match the PRICE.
Call us on Now 01403 711 936
Email: [email protected]

A gold, starburst-shaped seal labelled GUARANTEE and WINDOW-MART SUPER PRICE PROMISE highlights our uPVC service second to none in Horsham... with a smaller circle reading CALL Today GUARANTEE in the upper right corner.

What our customers say

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Based on 52 reviews

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About

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. We have our own building team for groundwork and brickwork. 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 you get the very best in service and quality.

Contact Us

01403 711 936

Show Complex

Old Barn Garden Centre,
Worthing Road, Dial Post,
Horsham, West Sussex,
RH13 8NR

Opening times:
Mon -Sat: 10am – 4pm
Sunday: 11.30am – 3.30pm

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