Flat Roof Calculator
PermaRoof UK Kit Builder
PermaRoof UK’s own flat roof calculator, the EPDM Kit Builder generates a complete kit list quickly and easily, that you can print, save or send to our team in one click to get a quote.
Whether you’re an experienced tradesman or embarking on a DIY project, save time with the PermaRoof UK Kit Builder App. No roofing knowledge is required to use our flat roof calculator, simply measure your flat roof and input the details into the app. The Kit Builder App is a handy tool for both trade and DIY roofers and is fast and easy to use.

Benefits for Trade Roofers
Want to get roofing quotes done faster? Try the free PermaRoof UK App
PermaRoof UK’s Kit Builder App is the perfect tool for trade roofers, streamlining the quotation process and speeding up the turnaround time for all your jobs, large or small. Best of all, it’s free and easy to use on a range of devices. Your EPDM kit list will include everything you need for your project and can be printed and saved for your client file before sending to the PermaRoof teams for your tailored quote.


Flat Roof Calculator for Homeowners
Need a bespoke DIY roof kit? Try the PermaRoof UK Kit Builder
Easily accessible on any device, the Kit Builder allows you to build a project-specific EPDM roof kit list in just four simple steps. Our flat roof calculator delivers your materials list within moments, allowing you to save, print or send it to us to get a fast quote. Whether you’re recovering a shed roof, tackling a green roofing project or a garden office, the PermaRoof UK flat roof calculator ensures there’s no waste or danger of underbuying your materials.
How it works
The PermaRoof UK EPDM Kit Builder is fast and easy to use for both trade and DIY roofing projects. Tailoring and buying a flat roof kit from PermaRoof UK offers reassuring peace of mind in terms of quality, reliability and support for the long term, not just until you’ve purchased your products.
Trade roofers all over the UK have added the PermaRoof UK EPDM Kit Builder App to their essential toolbox and are producing more accurate roofing quotes faster than ever before. Our free tool has been designed to be fast and easy to use, even when on-the-go or between jobs.
PermaRoof UK flat roof kits contain everything you need to get the job done and can be tailored to include innovative EPDM accessories to handle tricky parts of the installation, such as pipe vents or drain outlets. Elevate RubberCover is the membrane of choice for all our EPDM kits, assuring you of a reliable, watertight seal over its life expectancy of more than 50 years. The flat roof calculator helps you to ensure a comprehensive kit list with nothing left out or left over.
The PermaRoof Kit Builder is easily accessible on any device to allow you to build an EPDM roof kit list in just four simple steps
- Enter your measurements
- Enter details – extrusions, adjoining buildings, upstanding walls
- Enter additional requirements – trims, gutters
- Receive your kit list and send to PermaRoof UK for a quote
- Place your order before 12pm (Mon-Fri) and get fast delivery.

The EPDM Kit Builder needs just the basic details to start the process and has a user-friendly interface that makes it fast and simple. This includes measurements and basic contact information.

You can add edge trim systems during the second step with eight options to choose from. These include edges to adjoining buildings, other roof systems and upstanding walls. Trim colour options are black, white and anthracite grey.

Extrusions and corners are tackled in the third step. EPDM systems offer a range of innovative accessories, specifically designed for pipe extrusions and drain outlets of all types. Add the details here of extrusions and corners, such as around skylights and chimneys.

The final step offers a summary of your project and the option to change any of the details if necessary. Once you’re happy, you can print the kit list out, save it or send it directly to PermaRoof UK for a fast quote in a single click.

Bespoke Roof Kit Builder & Calculator
Build a roof kit to your own specifications using our free flat roof calculator. Fast and easy to use tool, requiring just a few details to produce a tailored, completely bespoke roof kit. Used by trade and DIY roofers across the UK to simplify specification and quotation.

About PermaRoof UK
More than just a supplier
Trusted expertise – comprehensive resource library, flat roof training courses, commercial division and experienced technical support team
Customer-first ethos – from DIY homeowners to large-scale contractors, we’re invested in the success of your projects, regardless of size
Your project, our passion
A quarter of a century on, our values remain the same: quality products, genuine customer service and lasting innovation.
Whether you’re a homeowner, installer, stockist or contractor, we’re here to help with projects large and small. Contact us today to see how PermaRoof UK can support you.
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Get in Touch
Please leave your details and someone from the PermaRoof UK team will be touch shortly to help you with your enquiry.
Permaroof UK® Ltd
Unit 1
Westway
Cotes Park Industrial Estate
Alfreton
Derbyshire DE55 4QJ
Tel: 01773 608 839
Fax: 01773 608 408
Email: Click here
Registration No. 4109502
VAT No. 764 2785 00
Permaroof (UK) LTD
Opening Hours
Mon – Fri (8am / 5pm)
We are closed on bank holidays and we re-open the following working day at 8am. Feel free to send us your enquiry during these periods and we can get back to you.
CONTACT PERMAROOF UK
PermaRoof UK are on hand to answer any questions regarding our products, services or your order. We welcome enquiries from the trade, stockists and homeowners alike. Contact PermaRoof UK today using the below form and one of our experienced team members will be on hand to help you right away.
Permaroof UK® Ltd
Unit 1
Westway
Cotes Park Industrial Estate
Alfreton
Derbyshire DE55 4QJ
Tel: 01773 608 839
Fax: 01773 608 408
Email: Click here
Registration No. 4109502
VAT No. 764 2785 00
Permaroof (UK) LTD
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