AJN Site Services is a supplier and installer of Origin aluminium doors. These are the slim black-framed doors, often referred to as steel style doors, that give fine Crittall-style sightlines in a modern, low-maintenance aluminium system. We survey, supply and fit the full set.
A selection of real origin aluminium doors projects across Chesterfield, Derbyshire and South Yorkshire. Tap any photo to enlarge.



Scope scales with the project, but these are the things we cover as standard on any origin aluminium doors job.
As a supplier of Origin aluminium doors, we fit a premium, British-made system backed by a long manufacturer guarantee, in the configuration your space needs.
Slim black frames with fine sightlines give the steel style, Crittall-inspired look, in a warm aluminium system that needs almost no upkeep.
Single doors, doubles, sliders and fixed screens for dividing rooms inside, or weather-rated sets out to a garden, terrace or extension.
We measure the opening, order the Origin set to suit and fit it level and square, so the doors operate smoothly from day one.
They give the same slim, black, steel style look, but in aluminium rather than steel. The fine sightlines deliver that Crittall-inspired character, while the aluminium frame is lighter, warmer and needs far less maintenance. We supply and fit them as an Origin partner.
Origin aluminium doors are powder-coated and come in a wide range of RAL colours, though the classic choice for the steel style look is a matt black. We can match the doors to your windows or scheme.
We survey, supply and fit as one job, so the Origin set is ordered to the right size and installed properly, operating correctly from the first day.
We cover Chesterfield and the surrounding Derbyshire and South Yorkshire towns as standard.
Tell us what you have in mind and we’ll come and measure up. Free quotations across Chesterfield and Derbyshire.
Call usSend a few details and we’ll get back to you to arrange a site survey. Domestic and commercial enquiries welcome.