New Roof Quote Tool; 3 Easy Steps

Read our step-by-step guide to using our simple, accurate, and time-saving EPDM Roofing Cost Calculator. 

Step 1: 
  • Enter both the length and the width of your roof into our EPDM Roofing Cost Calculator. 
  • You can add the dimensions in either Metric or Imperial measurement.
  • Note: if the roof you wish to cover with EPDM is a non-conventional shape (such as an L-shape), then you can separate your roof into rectangular sections and use our EPDM Calculator to quote for each individual section.
  • Click 'next step.'

Step 2: 
  • Step 2 deals with the roof edges and will require you to specify which types of edges surround your roof.
  • You can individually select a type of edge for each of the four sides of the roof area from a pop-up list containing the following options:

    • Wall - This edge will be up against a wall.
    • Gutter Drip - Water will run off this edge, possibly into a gutter.
    • Kerb - This edge does not adjoin another roof/wall or gutter but I need to prevent water running over the edge.
    • Slope Onto - A sloping roof runs on to this edge.
    • Slope Off - Water runs off this edge on to a sloping or pitched roof.
    • Rubber Join - This edge is joined to another rubber roof (i.e. L-shaped roofs).
    • Felt Join - This edge joins on to an adjoining felt roof.
    • Own Trims - I have my own trims or will use a timber batten/fascia board to secure the rubber membrane.

You can purchase trims in either black or white or Grey. In addition, you can also buy the rubber in two different thicknesses, 1.2 m, and 1.5 m thickness, both with a 20-year and 30-year guarantee.

  • Click the next step and this will create a complete kit list.

Note: given the difference between your roof size measurements and the necessary rubber size, Rubber Flat Roof add 200mm extra on each side of your EPDM rubber order, which will cover most edge situations.

You can now also add additonal options such as Pipes, through roofs, parapet wall outlet and preperation for a rooflight!

Step 3
  • You will be provided with a quote that includes a breakdown of all the products you will need to complete the rubber roofing process including product codes, product descriptions, quantities, individual unit prices, and the total cost.
  • After reviewing the quote, if satisfied, select ‘Next Step’.
  • Our EPDM Calculator will automatically add all the items, in the quantity and at the prices specified in Step Three’s quote breakdown, to your online basket for order completion.

And that's it! The purpose of our EPDM Calculator is to make the quoting and ordering process as simple and convenient as possible for our customers. If we can help in making your EPDM rubber roofing experience easier in any other way, or if you have any questions regarding your rubber roofing needs or the process of using our EPDM Calculator, please do not hesitate to get in touch with the Rubber Flat Roof office on 01392 927729 or email