Call 01977 649641 (Mon-Thurs 7:30am-4:30pm Fri 7am-3pm)


As a property developer or project manager, finding a company that can offer a large number of high performance windows at a cost-effective price can be tricky. Throw in various requirements, and the task becomes even trickier.
  • Available in timber, timber effect, aluminium or uPVC
  • Casement, tilt & turn, slimline aluminium, sliding sash, flush sash and vertical sliders available
  • Available in a wide range of colours & finishes
  • Suitable for a range of applications
  • Security guarantee on MACO locking hardware
  • Supply only or supply & installation available
A large commercial project with uPVC windows in anthracite grey colour
Black uPVC casement windows supplied for large multi-storey building
uPVC commercial tilt in windows
White windows for large project
Windows supplied for Crocodile Works housing project in Birmingham
Timber window project
Barn conversion project

Aluminium, uPVC, timber and timber effect windows for commercial applications

Dempsey Dyer’s commercial service is on hand to help. We offer a range of window styles, suitable for all commercial applications. This ensures that you can meet both functional, stylistic and budget demands. Let us take care of your windows needs from start to finish with our professional service and high performing product range.

About usGet in touch

Windows supplied for refurbishment of large commercial property

Why choose our windows for your commercial development?

  • Suitable for many applications including new builds & housing associations
  • Colours from Express, Heritage Colour and Deuctone collections
  • Fab & Fix hardware, and premium ‘From the Anvil’ ironmongery
  • 'A' Window Energy Rating
  • Can achieve Secured by Design status
  • Modern EPDM technology ensures seals are completely weatherproof

Get in touch

High performance uPVC from Deceuninck

Your commercial development will seriously benefit from our high performing uPVC windows that make use of the Deceuninck 2500 or 2800 series. Reaching the highest energy ratings, our windows are efficient as well as capable of gaining Secured by Design approval.

Our uPVC windows achieve 500 hours of salt spray resistance, which can be doubled for coastal areas. Friction stays enhance corrosion resistance and the windows incorporate high performance locking systems, making them suitable for any project and application.

The timber range we offer are naturally energy efficient and have been enhanced for durability and weatherproofing.

Our own range of timber effect windows for commercial applications from the Beaumont Range bridge the gap between traditional timber and modern uPVC by combining the benefits of both.

uPVC windows with slim sightlines perfect for commercial application
Commercial windows supplied for aston university building in Birmingham

Support from the planning stage through to completion

From the initial stages of advising you on products through to installation and aftercare, we have everything covered. A commercial partnership with Dempsey Dyer will ensure that the windows you have for your projects will surpass your requirements and impress the end user. Our list of satisfied customers proves our commitment to supporting you through the whole process.

We aim to provide you with a Window Management package that goes beyond the products. We want to offer cost effective solutions and advice to ensure our customers get the very best service from us.

Our commitment to high quality product and workmanship standards all contribute to ensuring end user satisfaction. This results in efficient trouble-free project management complete with clear and concise communication.

Bespoke designs can be created if necessary and we can advise on the best installers for your project.


  • NHS logo
  • Berkeley Group logo
  • William Davis logo
  • Travelodge logo
  • Elliott logo
  • BAM logo
  • Lindum logo
  • Bouygues logo
  • fairview-homes logo
  • Shanly homes logo
  • Bellway logo
  • Kier logo


Installers and other businesses can only work effectively if they have a reliable trade supply – of the highest performing products. Luckily, here at Dempsey Dyer we only supply the latest options from market leaders. This guarantees quality, performance and durability – regardless of the product choice.

  • Reynaers logo
  • Deceuninck logo
  • Accoya logo
  • Teknos logo
  • Maco logo
  • Pilkington logo

Project & Contract Management

We help to ensure all projects run smoothly – and keep to budgets and time scales.

Learn more

Environment & Recycling

We have a duty to minimise our effect on the world around us.

Learn more

Equality & Diversity

We provide equal opportunities for all and are strongly against any form of discrimination.

Learn more
Copyright © 2024 Dempsey Dyer Ltd | Company No. 01309583 - Registered in England and Wales | Website terms and conditions

Are you an installer?
> Visit our trade website