You may wonder exactly how your roofing sheets are made? Do they arrive profiled? How are they cut to length? How is the colour applied?

We will aim to answer all these questions in this latest blog.

Roofing Sheets Steel Coil

Your new roofing sheets start their life off as a steel coil. These are brought into us from a variety of suppliers, mostly Tata Steel.

The steel is galvanised to provide it with adequate protection from the elements, as well as being rust-resistance for a lasting roof.

The coils come in with the required coating; Polyester Paint Coated or PVC finish. They will be in a variety of colours ready to be formed into roofing sheets. Our roofing sheets are available in five colours for Polyester Paint, 11 colours for PVC Plastisol, and three colours for Tile Form sheeting. Both Box Profile and Corrugated profiles are also available to order with no colour applied, in a plain galvanised finish.

The coils are extremely heavy, with each coil weighing approximately 3.5-5 tonne. This means they have to be moved using a forklift or gantry crane.

Roofing Sheets Steel Coil

As you can imagine having all the different colours, finishes and sizes available require a vast amount of steel coils to be stored on the premises.

You can learn more about choosing the right type of roofing sheet for your project here.

Roll Forming Machine

The coils are then moved using a gantry crane onto the decoiler ready to be fed into the roll forming machine.

At this stage, a Dripstop anti-condensation membrane can be added to the reverse side of the sheet, if selected by the customer at the time of ordering. The grey polyester fleece of Dripstop prevents condensation from dripping off, with specially designed pockets that trap water droplets.

Feeding through the Roll Forming Machine

The steel coil is fed through the roll forming machine, and the first stage creates the centre profile of the sheet.

Creating the profile

The steel material then follows the line to create a second profile, and so on until the material has become a finished product.


The steel sheet is then fed through the guillotine to the required length and cut to size. We can cut our roofing sheets to specific lengths depending on your project. You can find the maximum lengths that we are able to cut each profiled sheet to on the relevant product pages for Corrugated, Box Profile and Tile Form.


Each sheet is then stacked on top of one another in a neat pile to create the finished order. We then add a cover sheet to the top of the order to prevent any damage or scuffs to the finish.

So there you have it! The before and after of a profiled metal sheet is broken down into simple stages.

Roofing sheets vary in pricing according to the size, profile and finish. For more information on our roofing sheets please visit our FAQ section, or contact our Sales team on 01837 659901 to find out more.

We can deliver our Roofing Sheets nationwide using our own lorries and drivers to provide the best possible service for our customers. Find out more about our delivery service here,