New build specialists - send us your drawings.

Why choose Fortress?

What makes us different from other double glazing companies is that from the first contact with us its very straight forward and hassle free as you only deal with the one person from the very start to the finish. Once you've made up your mind that you want us to give you a cost just call us, e-mail us or fill in the short form on this website and we will come out at your convenience and we will take quick sizes and give you any advice you require. The average time for our visit is around 15 minutes, WE DO NOT USE PRESSURE SALES. We will then contact you the next day or as soon as we can with a cost. Our cost to you is always very competitive so assuming you are happy and want to go ahead we will then arrange a true measure of your frames and a date would be set for the installation, its as simple as that. We also recommend that you take a visit to our showroom/office to see the product. Remember our windows and doors are manufactured to very stringent British Standards.

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First impressions are everything and with your door being the focal point of your house it is important to get the right door to suite requirements. With our wide range we are sure we can help you with your choice. At Fortress we provide and install a wide range of quality uPVC,Composite, French,Patio, Bi-Folding or Stable doors, so you will have a great choice of styles, colours and finishes to choose from.At Fortress we understand the importance of felling secure in your home, that's why all our doors incorporate the high security technology.



If your looking for a window system that will transform your home with more light, better security, enhanced aesthetics or improved energy efficiency, you'll find your perfect match in windows supplied and installed by Fortress. Our bespoke windows are manufactured  to fit your home, ranging from Casement and Bay or Bow styles to Tilt & Turn, Sliding Sash and Fully Reversible options. Features include steel reinforcing, multi-chambered profiles,internal beading, multi-point locking, 28mm sealed glass units, choice of colours and warm edge spacer bars as standard. Secured by Design system and an upgrade to A Rated are frequently requested to further security.

With 40 years experience in the Glass/Glazing and uPVC manufacturing side of double glazing you can have confidence in your investment when you deal with the owner directly from Fortress Doors and Windows Ltd. Based in Wishaw, North Lanarkshire we have been installing frames and supplying them to the trade since 1995, establishing ourselves as a trustworthy and knowledgeable company who care about our installations before, during and after the work has been completed. As we are a family run company who care about our installations you can rest assured we we will give you our full attention throughout your installation. Each product is made-to-measure and is focused on your exact specific requirements.Whether you want to replace your home's entrance with a new high security door or you're looking to upgrade the windows in your home, get in touch with us today.

Quality Assured

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Covering all areas including:

Wishaw, Motherwell, Hamilton, Bothwell, Carfin, Bellshill, Carluke, Lanark, Newmains, North Lanarkshire, South Lanarkshire, Larkhall, Cleland, Shotts, Salsburgh, Livingston, Bathgate, Edinburgh, Uddingston, Holytown, New Stevenston, Airdrie, Coatbridge, Cambuslang, Rutherglen,Glasgow, Glasgow South, Glasgow North, Glasgow East, Glasgow West, East Kilbride, Falkirk, Linlithgow, Newton Mearns, Bearsden, Milngavie, Strathaven, Stonehouse, Kilmarnock, Ayr, Lesmahagow, Douglas, Carstairs, Stirling, Whitburn, Carnwath, Bishopbriggs, Cumbernauld, Kirkintulloch, Kilsyth.

Want to send us drawings? Click here....

Fortress Doors and Windows Ltd

Unit 1 Pickerings House,

Netherton Road,


North Lanarkshire


Monday to Thursday - 8:00 - 4:30

Friday 8:00 - 3:30

Saturday - 8:00 - 12:00 Please call 1st as we may be out on site.

Sunday - Closed

VAT Reg: 659 0687 92

Company Reg: SC 165 708

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