Up to 5% discount on all products. Extra: Free upgrade of Insulation to All cladding orders.

Double Glazing Southend

Quality Double Glazing in Southend On Sea

Are you looking for professional window companies in Southend? Look no further than Greenoak Concept & Design for all of your double glazing in Southend On Sea & all areas within a 5-mile radius of our showroom.

Quality designed windows are more than just a gleaming finish to your home. Our double glazing solutions improve security and energy efficiency, helping you save money on huge energy bills.

White Windows
Group 9
Casement Windows
Group 9
Vertical Sliding
Group 9
Flush Sash Windows
Group 9
Tilt & Turn Windows
Group 9
Bay & Bow Windows
House with wooden window and door frames After
House with white window and door frames Before

We have double glazing that come in three different styles. Your choices are either sculptured, chamfered and flush. All can be viewed on our brochure page or in our showroom.

Greenoak Concept & Design Ltd have two favoured UPVC window systems which are Liniar and Deceuninck. We believe that these two systems are by far the best window extrusion on the market.

Their chamber systems, which are manufactured and composed of 100% lead-free PVCu, give improved insulation, robustness, and acoustic performance.

The bubble gasket provides an improved weather seal, reducing the possibility of warmth leaving and eliminating draughts.

Both systems received the highest possible BFRC (British Fenestration Rating Council) window Energy rating of “A.” Greenoak provides standard “A” Rated Argon gas filled double glassed units, making our windows the most energy efficient on the market.

Liniar Logo
Deceuninck logo
Greenoak Concept & Design

All windows come with

Expert Glaziers In Southend On Sea

Greenoak Concept & Design Ltd provide a comprehensive selection and installation service in Southend On Sea to ensure that your new double-glazed windows look as good as possible.

Taking direction from your vision, our dedicated team will guide you through all of the design options available to you and how they might fit into your home Once you are happy with your choice, Greenoak Concept & Design Ltd.’s expert fitting team delivers a seamless installation service, ensuring that you are 100% satisfied with your new double-glazed windows, both now and in the future.
The Greenoak Concept & Design Installations team actively work with some of the best systems companies and industry innovators to guarantee an impressive finished result every time. These include household names like Linair, Alumina, Korniche, Solidor, Hurst, Pilkinton, Masterdor and Ultraframe, delivering excellent efficiency, security, and style.

The perfect finish

Our standard white is a high gloss finish, making it easier to keep your new windows bright and white for years to come.

Many other systems have a matt, grainy finish, which the dirt will cling to, making it much harder to keep clean.

If white isn’t what you’re looking for, we have a wide range of colours and wood finishes, What about smooth cream or white woodgrain? The choice is yours…

Various shade of colours
Please Note: Actual colours may vary due to high res website pictures. For accurate colour selection please refer to foil swatches from Greenoak Concept & Design

We're trusted within our industry
Learn more about us

Our team are
ready and waiting
to help you...

Greenoak Concept & Design have been raising the standards for more than 10 years.

More about us: We’re an independent Essex-based specialists in high quality UPVC Windows, Doors, Tiled Conservatory Roofing, Wall Cladding, and Fascias, Soffits and Guttering.


Free Quotation

Come and visit