Double Glazing and Building Products Supplier in Worthing & West Sussex

Here at MLI, we supply a wide range of building products and double glazing solutions. From windows, doors and lantern roofs to soffits and fascia boards - we have everything you need to complete any home improvement project.
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Market-leading products

We stock quality products, hand-picked from market leading manufacturers of windows, doors, conservatories and accessories.

Quick turnaround

Whether collecting in-store or delivering to site, we're able to fulfil orders quicker than any of our competitors.


We pride ourselves on our first-class customer service, ensuring tradespeople are able to offer first-class services in turn.

Why Choose MLI?

Our staff specialise in delivering great services to busy tradespeople. Our massive range of products are expertly specified, ensuring our clients are able to deliver the perfect project.
  • A range of products and finishes for complete versatility
  • Expert staff delivering exceptional customer service
  • Innovative technology for the ideal handover

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Our Products


We offer a wide range of windows with a selection of different styles available. All windows offer superior security and improved energy efficiency, while giving your home a slick, stylish new look that will stand the test of time with an extensive manufacturer’s warranty.


Our range of classic effect composite doors offer a secure but welcoming entrance to your home, while our range of uPVC doors blend perfectly with the style of your new windows. Bi-fold and French doors can be used to open up your living space to let the outside in, without compromising on security.


Increase the energy efficiency and security efforts of listed buildings with our bespoke secondary glazing service. Our secondary glazing service is designed to remove the need for planning permission and completely protect the building.

Free skip use when replacing old for new

Our Brands

Latest News

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lean-to conservatory

Most Commonly Asked Questions About Conservatories

Conservatories have been an all time favourite among British homeowners for years due to a range of benefits they offer. Added living space, beautiful design and an abundance of natural light – by installing a conservatory you gain so much by investing a relatively low amount of money. Conservatories come in a wide range of […]

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sash horn window

Complete Guide To Window Frame Styles

Your windows play an important role in not only letting in light into your home but they can also completely transform the appearance of your home. However, with so many different styles and materials available, when it comes to replacing your windows, it can be a daunting task.  If you make the right choice then […]

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Contact Us

    MLI Building Products

    Our Opening Times

    8am to 5pm Monday - Friday