Getting Started

Welcome to the new age

of Composite French Doors

Composite french doors by Rockdoor are a preferred alternative to standard uPVC french doors which have hardly changed in over 2 decades. Composite french doors have the same characteristics of solid timber but with the practicality of uPVC. Extremely strong and robust, the only way through them is with a chainshaw!

Better yet, because we’re Rockdoor Trusted Installers we can guarantee to beat any price!

Give us a call on 07930 330838  or alternatively, use our online contact form. You can also message us through facebook!

‘Secured By Design’ uPVC & Composite French Doors

Pro-fix Windows offer a huge range of energy efficient and ‘Secured By Design’ french doors which are the perfect addition to any home.

We offer a choice of 8 colours in our upvc french doors and 13 colours in our Rockdoor composite french door collection. The colours can be used on both exterior and interior – with the option of a different colour for the outer frame. We can tailor our windows and doors to suit the look of any residential or commercial property.

Strong, secure and durable.

Designed with security in mind, our doors come with multi-point hooks, deadlocks and shootbolts. Matching sets of keys for the anti-snap & anti-pick cylinder locks keep things simple for the homeowner.

Less frame, more glass.

Let in as much light as possible.

Cost Effective

Liniar profiles deliver even more energy savings for the homeowner. Liniar window systems are capable of achieving WERs (Window Energy Ratings) of A++, with U-values as low as 1.2w/m²K (DGU) and 0.8w/m²K (TGU).

Technically Advanced

The technology used in many other PVCu door profiles is at least 20 years old. Our door profile (Liniar) was designed completely from scratch in 2007 and is far more technically advanced – built for today’s exacting challenges.

British Made

Our uPVC doors are extruded in Derbyshire at the HL Plastics manufacturing plant, which boasts the largest mixing plant in the UK. Continued investment in the factory and facilities keeps Liniar at the forefront of innovation. Our Rockdoor composite doors are manufactured in Blackburn.


In any enviroment

Our business method


Fair Price

We keep our prices low by passing on the trade cost of your new windows and doors and only charging a standard installation cost.

Highest Installation Quality

Our installers have a minimum of 15 years full-time installation experience and are customer approved and recognised.

Highest Product Quality

We only install the best products, which is why we only install ROCKDOOR composite doors and Liniar uPVC windows and doors.

The Best After Sales Care

Our customers in need are our top priority. We call same day to all call outs if required, otherwise at a time to suit yourself.

Reliably Professional Everytime

Our quality work is repeated time and time again, because all our work is carried out by the same 2-man expert installation team!

Registered Waste Carriers

We recycle all your old windows and doors professionally, ensuring all waste is filtered and recycled according to strict regulations.


Rockdoor composite doors are the strongest doors on the market, boasting superior build quality and longer guarantees, they’re the only option you should consider when shopping for a composite door. We offer unbeatable prices, too!

Bi-folding Doors

Our aluminium bi-folding doors are secure, stylish and built to last with marine grade coating and stainless accessories. Choose from a combination of opening styles and colour options, with laminated glass as an extra security upgrade.