Flat Roof Kits
Standard and custom flat roof kits to simplify your projects
We developed our range of flat roof kits to help simplify buying and installation of EPDM roofing systems. With standard, custom and bespoke kits available from 8m2 up to 15m x 60m, we can provide a comprehensive kit to suit your projects, large or small – with everything included.
We include high performance EPDM membrane in all our roof kits to bring longevity to shed roofs, garages, flat roof extensions, trade and commercial projects. Get expert advice and full project support at PermaRoof UK.
The Benefits of Buying an EPDM Flat Roof Kit
Why should you use an EPDM flat roof kit? From minimal waste and simplified quantifying to swift installation and a 50-year lifespan, an EPDM kit offers multiple advantages and a range of benefits for trade and DIY flat roofs.
Key takeaways:
PermaRoof Flat Roof Kits
Our range of roofing kits are ideal for various domestic applications, including shed and garage roofing, extensions and garden rooms, bay windows and more. If you’re wondering how to get the right materials for your project, a complete kit is the answer. In addition to EPDM rubber roofing kits, we developed a range of liquid roofing systems and kits to help with a wider range of substrates – find out more about liquid roofing here.
We provide a free Flat Roof Kit calculator for bespoke projects, where you can tailor a kit to suit your requirements – and we’re here at the end of the phone or chat if you need further help. We’ve put together our flat roof kits to simplify all your projects, regardless of size:
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How to Order Flat Roof Kits
It is fast and easy to order your flat roof kit at PermaRoof’s online store. We provide off-the-shelf kits in a range of standard sizes and offer a build your own kit option.
All our kits are tailored to include the correct quantities for your project specifications. We do all the calculations for adhesive, sealant and trim where applicable, so you don’t have to.
Measurements
- Measure your project carefully to ensure you enter the correct size for your roof kit
- Minimum order size 8m2 for bespoke roof kits.
- Membranes in standard roof kits include an additional 300mm to allow for overhang.
Custom and bespoke kits
PermaRoof’s range of flat roofing kits includes a ‘Build Your Own’ option, simply requiring project measurements to produce a tailored kit. Where a colour is specified, this refers to the trim colour only – the EPDM membrane is charcoal grey/black in colour.
For more complex or larger projects, try our free Kit Builder App and build a comprehensive kit list in minutes.
What’s included in a PermaRoof flat roof kit?
A PermaRoof full kit includes: EPDM membrane, water-based adhesive or bonding adhesive, sealant, edge and gutter trims, external corners, end caps, joint clips, foam tape and fixings (e.g., polypins). Kits also include an extra 300mm of membrane for overhang. Note that shed roof kits do not include trim and the associated accessories and fixings. Call us and we’ll build you a kit – tailored to your project.

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.

Key EPDM tips and takeaways
Measurements needed: Measure twice, on-ground outside, using an extra long tape to do it in one go.
Why EPDM?: Durable with longer lifespan compared to felt or other traditional materials; expanding as the material of choice.
DIY suitability: Designed for both trade and DIY; full guides and instructions are available. One-piece membrane for most projects.
Everything included in a kit: Forget about quantifying and let us work out what you need.
Flat Roof Kit FAQs
Yes. Sufficient adhesive, sealant, membrane, trim and fixings are all included in your garage roof kit. Simply enter the roof sizes, and we’ll calculate the right quantities for you.
We stock standard sized, off-the-shelf single and double garage roof kits. We also offer a custom, enter-your-own-size option. For the custom kit, you will need to enter the width and length of the garage in metres.
Measuring tips
- Measure on the ground outside the building
- Measure twice
- Ask someone else to check the measurements
- Add 300mm to both length and width to allow for overhang
The ideal length of overhang is around 150mm. We allow an additional 300mm of EPDM in our standard garage roof kits to ensure an even overhang on all sides. Please add 300mm to both width and length measurements when ordering enter-your-own-size kits.
EPDM has the longevity and performance you need for modern flat roof renovations, and it is fast-becoming the material of choice for specialist flat roofers all over the world. With a wide range of benefits, this high performing synthetic rubber membrane is the ideal, sustainable alternative to felt and other traditional materials that environmentally-conscious homeowners and tradespeople have been looking for.
How long does EPDM last?
With a 50-year service life expectancy, EPDM outperforms traditional flat roofing materials by far. RubberCover EPDM membranes have long warranties and when fitted by a PermaRoof Registered Installer, these can be extended by up to 30 years. We’re so confident in EPDM that all our shed roof kits contain a lifetime membrane guarantee.
Fast and easy to fit, EPDM roof kits are suitable for many typical domestic roof projects, such as:
- Shed roofing
- Garage roofing
- Modular garden offices
- Porch and bay window roofing
- Flat roof extensions
- Covered patio roofs
- And more.
Yes. Our range of EPDM roof kits are ideal for both trade and DIY, simplifying both ordering and installation. We provide full application instructions and have an extensive range of installation guides in our resource library.
A full flat roof kit from PermaRoof UK includes everything you need to complete the installation and get it right, first time. This means that when you order one of our kits, you’ll find:
- RubberCover EPDM Membrane
- PermaRoof Water-Based Adhesive
- PermaRoof Bonding Adhesive
- UPVC 2-part Drip/Gutter Trim (for one long side of your roof)
- UPVC Edge Trim (For one long side and two short sides)
- External Corner (x4)
- External Corner End Cap (x2)
- Joint Clips
- Edge Trim End Caps
- Closed Cell Foam Tape
- Polypins (box of 100)
Please note that our shed roof kits come complete with:
- RubberCover EPDM Membrane
- Bonding Adhesive (aerosol spray)
- Bond n Seal sealant
Trim is not typically included in our standard range of shed roof kits.
The ideal length of overhang is around 150mm. We allow an additional 300mm of EPDM in our shed roof kits to ensure an even overhang on all sides.
One of the fastest and most cost effective ways to re-roof a shed is to buy and install a DIY EPDM shed roof kit. With a 50-year service life expectancy, cost vs. value over time can be significantly higher than other traditional materials with a shorter lifespan.
Flat Roof Kit Videos
We’ve selected some of our most popular video content about flat roof kits. Visit the PermaRoof UK Video Library or head on over to our YouTube channel for more…
About PermaRoof
With an award-winning reputation for sales and customer service, you can be confident we’re a company that puts our customers first, whether you’re a trade counter searching for a reliable supplier, a professional flat roofer with a business to expand or a DIY enthusiast.
Our facility located in Derbyshire allows us to stock a significant amount of EPDM and we have the capacity for cutting hundreds of sheets per day. Centrally located in the Midlands, PermaRoof UK offers our reliable, fast delivery service via the company fleet across the country for most of our extensive range of flat roof kits and roofing products.
Over the last few years, we have extended our range of products to not only flat roofing products, but products that solve further problems such as artificial grass, maintenance free metal fence system and other long term solutions.
Installation support and expert advice
Here at PermaRoof UK, we offer support and expert advice to guide you through your flat roof projects. We can help you with high performance flat roofing kits, providing a strong, durable and ultra-reliable finish to last for the long term.
If DIY isn’t for you, we can also connect you with recommended professional local installers via our nationwide network of highly trained, skilled and vetted roofers.
Get in touch today if you need help with your order or wish to talk your project through with an expert. We’re here for you with award-winning sales and customer service support and our online store operates 24/7/365 with superfast delivery across the UK. Visit our Get Help page to find out more.
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Get in Touch
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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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