Windows, Conservatories, Double Glazing & Door Specialists

Book your 2020 conservatory or orangery and get a triple glazed upgrade

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Double Glazing

We are a family owned business providing double glazed windows and doors in the West Midlands. We believe that in order for us to provide you with the best solution for the project that you are interested in, we need to firstly fully understand how the product will be used. As well as giving a fabulous new look to any property, our huge range of double glazing doors/windows can add value to your property and save money on heating bills.

As a FENSA-registered company and established business since 1988, we understand that conservatories are a valuable lifestyle addition to any home. We manufacturer and install the right conservatory to suit your lifestyle, home and budget. Our quality conservatories can give many years of enjoyment and enhance your living space in a reception room, play room or office. Moreover, our conservatories come with a ten-year fully comprehensive and no-quibble guarantee, backed by a market-leading insurance company for your complete peace of mind. Our products come in Modern and Victorian styles both thermally efficient and easy to clean. They offer natural light and create a luxurious living area. Victorian styles incorporate a central ridge with three, or occasionally five, segments. Our installations comply with all current Building Regulations so if you need a new conservatory we can discuss your plans.

Conservatory Styles & Designs

If you are looking for specific designs / styles for your home, we have a fantastic selection for you - from traditional to modern designs. We have something to suit all budgets and tastes.

Our Services


Are you thinking of having new windowpanes?


Mainstream Windows is a leading supplier of doors.


Conservatories are a cost-effective and valuable lifestyle choice.


We supply and install top quality orangeries.

What Our Customers Say

First Class

"I thought I'd drop you a line and say how pleased I am with the led work, I am glad I left the designing of the led work entirely to you. It's absolutely first class."

- Vimal Sharma

Very Impressed

"I wish to confirm that I was very impressed with your fitters both Dave and Graham who were so professional with the installation and I was very pleased with their work Thank you. Please kindly pass my thanks and appreciation to them both."

- Sikander

Thank You

"I'm writing to you to thank you for the work carried out on the 4m April 2012 at the above address. I would personally like to thank the two gentlemen that carried out the work, who were in my opinion second to none and pulled out all the stops in order to produce an extremely high standard of work and when finished, left the property spotless. Because of this, I have no hesitation in recommending your company."

- Mr C. Szkoda - Warstock

We Are Delighted

"I am writing to thank you not only for our lovely conservatory but also for dealing with the modifications and amendments which we asked for without fuss. We are delighted with the end product and would recommend your workmen who were friendly and carried out the work well"

- Stan Ditton - Moseley


  • Order ANY 5 A rated windows or more and get 75% OFF our doors
  • 50% OFF triple glazed windows
  • Order a Conservatory or Orangery & get a back door FREE!

UPVC Windows

Our range of products can bring warmth and comfort to your property. Your UPVC windows and doors will be tailored to reflect your individual style. Our windows and doors are highly rated for efficiency in order to keep your home warm and cosy. They are also very secure with several locking features as standard.

Double Glazing

Mainstream are more than just a double glazing company, because we never compromise on quality or service from start to finish. We offer cost effective double glazing / door solutions to transform your home. We can give your property a fabulous new look by providing a range of solutions and save money on heating bills as well. We fit the windows to the highest standards, and we have a showroom where you can see all the options like handles, colours and finishes. Whether you need double glazing for windows or new doors, we have something in our extensive product range to match your home and budget. We have a wealth of experience in the industry, and are totally customer focused.

Why Choose Our Double Glazing Products?

Our double glazing products not only enhance the physical appearance of your home, they increase security and thermal efficiency too. Our products are completely customisable to your home so please phone with your specifications.

Over 20 Years Experience


For over 20 years, our award-winning FENSA regulated firm has successfully manufactured and supplied windows, doors and conservatories to our clients.

Contact Us

For more information on any of our services fill out our contact form or call us today on Birmingham 0121 430 9150

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Order ANY 5 A Rated Windows or more before May 30th 2013 and get 75% Off our Doors Order a Conservatory or Orangery in May...

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