Secure Composite Doors for Newbury Homes


Glass Leading Security

Rockdoors feature S Glaze technology, meaning your glass is locked into your door for life, for added security.


Accredited Performance

You get security assured with our composite doors. The systems we use are supported by the police backed Secured by Design initiative.



Our made to measure composite doors come with a plethora of customisation options. You can create something truly unique.

Features & Benefits

  • A-Rated for thermal efficiency
  • S-Glaze for warmer homes
  • Strong sintered steel multi point hook locks with a 25mm throw
  • Glaze technology
  • 35% stronger than a typical GRP door
  • 360° aluminium reinforced inner frame and high-density thermally efficient PU foam

Modern Composite Doors

If home security is your priority here in Newbury, composite doors are perfect for you. These modern entrance doors are famed for delivering unmatched security levels. Unique in their design, composite doors come with a solid slab fitted to the core of the profile. Doing this makes them incredibly durable, lending itself to excellent home security, weatherproofing and heat retention.

All the while, the design of a composite door lends itself to an excellent lifespan. Their unrivalled durability allows them to perform in all elements for decades, not just years. Despite this, you aren’t expected to perform regular maintenance. An occasional wipe down to prevent the build up of dust and dirt is all that’s required. The door will never fade, rot, warp or bow.

By working with an industry leading supply chain, we can offer homeowners like yourself with the market’s finest composite doors. Our systems come with a thicker 70mm core, thanks to a combination of a 360° aluminium reinforced inner frame and high-density thermally efficient PU foam. You won’t be able to find a better composite door in the Berkshire area.

Manufactured from Rockdoor, our composite doors are easily customisable and come with a range of design options. High quality topcoats, a range of decorative glazing finishes and a comprehensive range of accessories give you control. We have options for both modern and traditional homes alike, allowing our composite doors to blend effortlessly with any property.

Unrivalled Security

The composite doors we install deliver a standard of security unmatched by an alternative product. The 70mm composite slab is two thirds thicker than the industry average of 44mm. Doing this allows our composite doors to comfortably exceed the minimum Secured by Design requirements.

Adding an internal slab effectively makes the most vulnerable part of a front door – the centre – the strongest part. Our composite doors will prove almost impossible to damage, let alone break into. You have complete peace of mind in your home.

Energy Efficient

A significant benefit that comes from the addition of the 70mm rebated core is enhanced thermal retention. Our composite doors achieve an amazing A-rated energy performance, retaining around 19% more heat than a solid timber alternative.

A bulk of your home’s natural warmth can escape through your front door if you have a substandard one installed. Making the upgrade to a composite door will massively benefit your energy efficiency and carbon footprint, as you may not need to have your heating on as high.

Complete Weatherproofing

Our composite doors are fully weatherproof in design. They come with triple weatherseals that are fitted around the perimeter of the door and any 50mm triple glazed panels. Doing this ensures completes protection from the elements.

Even in the harshest conditions, your composite door will protect you and your home against the rain, wind and snow. You won’t be affected by problems such a rotting, mould or the forming of damp spots. All of these are expensive fixes you won’t need to worry about with a composite door.



Composite Doors Prices Newbury

You can get an estimated price for a brand new composite door by contacting us. Our quotes are also comprehensive, covering both supply and fit, so you know you’re safe with us. Leave your details and some information on our online contact form, and a member of our team will get back to you as soon as possible. You can also call us on 01189 711960 if you have any questions about our composite doors or our installations here in Berkshire.

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Experienced & Professional Installers

When making the investment in a composite door, you need to choose an experienced home improvements company. Doing so ensures an efficient and professional information, with a duty of care.

You get all that and more with Castle Windows, as we boast over three decades of industry experience and have served over 40 thousand customers in that time. You can place your complete trust in us to fit a new composite front door. We are supported by FENSA, Checkatrade and Master Builder.