We are a business with well over 20 years of experience in supplying and installing uPVC windows and doors in Southend on Sea and across Essex.

If you’re looking for a company that specialises in all double glazing and installation services then look no further than DMS Windows Ltd. Offering a range of services and solutions, from uPVC, Aluminium, composite doors to glass replacement. We understand that your window or door is one of the most important aspects of your home therefore we believe it should be installed and maintained properly.


Have you recently came across broken or blown windows? Are you looking to buy new or replacement windows in Essex? With our wide range of window styles, you’ll be spoilt for choice and will have no trouble finding a suitable option for your home. Having a new window can not only transform the appearance of your home but also make it a comfortable place to live by reducing noise levels and improving thermal insulation as well as adding overall value to your property. All of our services are available throughout Essex.

As a team, we can assist with a range of services and solutions including, the installation of double glazing, glass replacement, and much more.


We offer a range of entrance doors to enhance the front of your home, along with French, sliding patio, and bifold doors. Whether you’re looking for UPVC, hardwearing composite, or aluminium, we have it all.


Not only are we professional window contractors but we are also able to provide conservatory services to suit your individual needs and requirements. A conservatory can greatly enhance your home and provide extra space for all year round use. Whether your preference is for a Victorian or contemporary conservatory, we can design a solution that is in keeping with your property and the specific requirements that you want for your home. 


Skylights are designed to give you the ultimate and unrivaled view from your home and extension with supreme sky views. With contemporary skylight designs made from UPVC or aluminum and energy-saving glass, it not only ensures your skylight will look great and keep your room comfortable no matter what the weather throws at them. 

View our workmanship

Over the years we have worked on a number of windows, doors, conservatory and skylight projects for our clients around the Essex area and always strive to deliver the best possible service at all times. When it comes to doors and windows in Southend-on-Sea, we are the experts!

We are confident in our work, and you can always expect the best results from us with all of our jobs. Please take the time to have a look at our gallery for more examples of our work.

Looking to get in touch with us for a quote? Give us a call now!

If you require a service that has not been mentioned or would like to discuss your requirements with a member of our team then please do not hesitate to get in touch with us. Our friendly team are more than happy to provide you with advice as well as a free no obligation quotation.