Advance Building Plastics supply a fantastic range of casement windows to tradesmen and homeowners. Delivering the perfect blend of style and comfort, enjoy our products in Hereford and Kingsbridge, where we are based, and across the South West and throughout the UK. Use our contact form, and you can request a free estimated supply only price for a set of casement windows.


Our casement windows are extremely weatherproof. The windows we supply are fitted with deeper drainage channels to carry rain away from the building and a 10mm cover for weather tightness.

Low Maintenance

Casement windows are very easy to stay looking as good as new. These windows just require an occasional wipe down with a damp cloth, and won’t need repainting as they don’t discolour.

Slim Profile

The slim profile design featured on this style of window allows for a larger glazing area. It offers improved thermal efficiency in the property and panoramic views of the outside world.

Colour Options

Glass Options

white chartwell-green dark-red brilliant-blue Steel-Blue agate-grey
clear casement-arctic-cutout casement-autumn-cutout casement-chantilly-cutout casement-charcoal-sticks-cutout casement-contora-cutout casement-cotswold-cutout casement-everglade-cutout casement-digital-cutout casement-flemish-cutout casement-florielle-cutout casement-minster-cutout casement-mayflower-cutout casement-oak-cutout casement-stippolyte-cutout casement-pelerine-cutout casement-sycamore-cutout casement-taffeta-cutout casement-warwick-cutout

Market Leading Casement Windows

The casement windows we supply can achieve an A++ WER and low U-values of 0.8W/m2K. This excellent performance is due to the intelligent design benefits and multi chambered profile that helps prevent heat loss happening. Pockets of air create an insulating barrier between the cold outside and the warmth inside of the building. By keeping more warmth inside the property, central heating will need to be used less, helping lower energy bills and minimising carbon footprint.

We choose to use uPVC for the casement windows we supply to our customers. uPVC is a fantastic material to use when crafting our windows, as it boasts a reliably long lasting natural lifespan and offers weatherproof benefits. As with all our uPVC windows, you choose between double or triple glazing panes. The window frame has been manufactured to accommodate both.

Supply Only Windows Pontrilas Hereford

Secure Casement Windows

We understand that security is important for both installers and eventual homeowners. Our casement windows are fitted with the highest rated security features on the market. Our windows come with multipoint locking systems and dog bolts as standard, defending homes and buildings from unwanted intruders. We supply durable double or triple glazed units, which we use in our casement windows but also supply on their own as well.

We only supply the best casement windows on the market, crafted from premium quality materials. This ensures our window frames offer inherent and long lasting strength. The quality uPVC we use to craft casement windows won’t bend, bow, warp or distort when exposed to the temperamental British elements. Our uPVC windows are also coated in a durable, long lasting colour finish. No matter what colour you choose for your new casement windows, they will stay looking fantastic for years to come. This bespoke coating won’t peel, flake or crack, meaning they won’t need repainting or sanding.

Request a Casement Window Quote

Request a casement window quote today from Advance Building Plastics. We provide supply only quotes on request, so submit through our form today.

You can also visit us directly at either our Hereford or our Kingsbridge showrooms to discuss quotes face to face.


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