
Planning a flat roof project doesn’t need to be complicated, and with PermaRoof’s Flat Roof Calculator, EPDM just got a whole lot easier.
Whether you’re a trade roofer or a DIYer looking for a simpler way to quantify and order your supplies, our flat roof calculator is here to help. You’re just four easy steps away from getting your kit sorted – and only a few minutes – let’s get started.
It’s all in the planning
When you’re planning any roofing project, one of the first and most important steps is quantifying – knowing exactly what you need… and how much it’s going to cost. That’s where the PermaRoof Flat Roof Calculator comes in pretty handy.
Seasoned tradesperson or a DIYer tackling your first EPDM installation, our easy-to-use calculator gives you instant, accurate kit lists and fast estimates to help you plan with confidence.
Why use a flat roof calculator?
Let’s face it – working out the materials and costs for an EPDM roofing job can be a headache. You need to factor in dimensions and surface area, membranes, adhesives, trims and tools – and that’s before you even consider overhang, waste allowance or product compatibility.
Our flat roof calculator takes care of all that for you.

What It Does (So You Don’t Have To)
The PermaRoof EPDM Flat Roof Calculator is designed to make the quoting process as simple as possible. All you need to do is to just enter a few key details during four stages. You’ll need to know your roof dimensions and things like where your adjoining walls are, whether you’ve got flue pipes or skylights and the preferred grade of membrane. Then the calculator will:
- Instantly calculate surface area and the sheet size of your membrane
- Work out how much adhesive you need
- Provide a full list of required materials – including any EPDM accessories
- Give you a total cost based on your inputs (submit for a no-obligation quote)
You’ll get a complete EPDM kit list in under a minute. No guesswork. No overordering. No under-ordering either. You can save it, print it out or send it to us for a quick quote. We’ll give you a reference number to make ordering easy too.
Perfect for trade and DIY projects
Whether you’re quoting jobs for customers or working on your own property, our flat roof calculator gives you peace of mind. You’ll always know what’s needed and how much it’s going to cost, enabling you to budget, quote and order with precision.
Many trade professionals use it to create fast quotes for clients, while DIY users love how it simplifies a potentially complicated process.

Built around RubberCover EPDM
Our calculator is tailored to ELEVATE’s RubberCover system, proven and trusted EPDM roofing products – so you can be confident that every item recommended is fully compatible and up to standard.
From RubberCover membrane to PermaRoof’s own branded adhesives, trim and tools, the system ensures your kit will work together seamlessly.
Find out more about RubberCover at PermaRoof UK here.
Ready to try the flat roof calculator?
You can access the PermaRoof EPDM Flat Roof Calculator right now, completely free. With no sign-ups, logins or downloads needed, try it online now and start planning your project. Just enter your measurements and hit calculate. From there, you can customise your kit or order it directly online in our store.
Related News from the PermaRoof UK Blog
EPDM Made Easy – Instant Kit List with Our Flat Roof Calculator
Planning a flat roof project doesn’t need to be complicated, and with PermaRoof’s Flat Roof Calculator, EPDM just got a whole lot easier. Whether you’re a trade roofer or a DIYer looking for a simpler way to quantify
How to Accurately Quote a Flat Roof Project: A Contractor’s Guide
When quoting a flat roof project, precision is key. Offering a clear, detailed quote helps build trust with your clients and ensures that both you and the customer are on the same page from the start. Here’s a
The Ultimate Flat Roof Area Calculator
The working out can often be the hardest part of a DIY flat roof project. Accurate measurements are key to quantifying and whether you have a simple rectangle or a complex design, we’re here to help with our
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
PermaGroup Brands, Partners and Clients
PermaGroup has established links with some of the biggest names in our industry thanks to our reputation of excellence. Read more about becoming a supplier or stockist here.



















