Advanced Exterior Plastics

Advanced Exterior Plastics is a trusted and local double glazing company based in Southampton. We have been supplying, installing and fitting double glazed windows, doors and conservatories for many years in and around the Southampton and Hampshire area.

Quality Southampton UPVC Double Glazing

We specialise in UPVC double glazing and offer a wide variety of double glazing styles, colours and finishes.  Whether you are looking for high quality Southampton windows, great value orangeries or conservatory roofs, we are confident we can provide you with the perfect solution for your home.


We have gained a wealth of industry accreditations over the years, further establishing our company’s excellent reputation in Southampton. You can be confident  in the quality of our windows and doodrs. All of our products are backed by the following industry accreditations.

FENSA Registered

FENSA Accredited

FENSA is the industry standard for double glazing installers self-certifying compliance with building regulations. There are many benefits to using a FENSA registered installer, including the guarantee of a quality service and products which are compliant with all building regulations.

Save Time & Costs. There is no need to register your double glazing installation with your local authority. As a FENSA registered company we take care of that for you.

FENSA is trusted by all local authorities, industry bodies and even the government.  We have been fully vetted and assessed by FENSA to ensure consistency of Building Regulations adherence and service. View our FENSA company information here.

BSI Registered

BSI Certified

Our double glazing is BSI certified which means our products have been independently checked to ensure they meet current British Standards.

The BSI kitemark is one of the most well known and respected product certification marks in the world so you can be assured of high quality double glazing in Southampton.

Which Trusted Trader

Which Trusted Trader

We are a Which recommended trusted trader. As a Which Trusted Trader, our company has gone through a rigorous assessment process and as a result are recommended by Which as a reputable and endorsed local double glazing trader in Southampton.

Buy with Confidence

Buy With Confidence Scheme

Buy with confidence with  a company you can trust. Advanced Exterior Plastics are proud to have been approved as a ‘Buy With Confidence’ member. This trading standards scheme applies strict criteria to ensure companies deliver the highest quality of work.


Consumer Protection Agency

The home of approved tradesmen. the Consumer Protection Agency provide consumers with protection in the home improvement industry. As an accredited member of this scheme, we offer customers with complete peace of mind.