DIY Garage Roof Kits for Fast, Seamless Waterproofing

Is your garage roof leaking again? At this time of year, when the sun comes out, it is common to find issues in certain types of roofing materials. If you’ve found yourself up on the garage roof experiencing déjà vu with your bubbling felt, then maybe now is the time to find another way. 

As leading UK flat roofing suppliers, we know a thing or two about garage roof waterproofing and offer support, advice and a range of resources to guide you through. We’re here to help, and provide liquid and EPDM garage roof kits, developed with DIY in mind to give you a long-term waterproofing solution. 

If you’re looking for a reliable, seamless approach to waterproofing, fed up with repeated repairs or trying to pre-empt a leak repair, this article is where you need to be. Let’s explore your options…

Repair or replace?

Heading a leak off before it starts is always going to be a better approach than dealing with the aftermath of a leak. Some materials, such as felt, bitumen and concrete do give a few clear signs of their demise in advance, so keeping an eye on these types of coverings for early damage warnings is a good idea - cracks, bubbles or lifting corners are all common red flags. 

It isn’t always as easy to spot potential damage, but if you’ve repaired a particular area repeatedly, check it as often as you can, both inside and out. Damage happens and spreads fast, especially in timber decks and supporting joists, so always try to track and trace a new leak site as quickly as possible.

If you’re pretty certain the covering is old, or you’re converting the garage for broader use, the best approach may be to replace the waterproofing, rather than wait to repair. Modern garage roofing offers two high-performance options for DIY that will give swift, seamless coverage – EPDM rubber and liquid PU roofing kits.

Exploring the benefits of EPDM for garage roofing

Replacing the waterproofing on a timber garage roof deck is a fast and easy project using an EPDM garage roof kit. We include RubberCover EPDM in all our DIY kits, because it can cover most standard projects in a single sheet (up to 15m x 60m). The elimination of the need for seams vastly simplifies installation, making it perfect for DIY. 

In terms of performance, RubberCover membrane brings a wide range of benefits, including a longevity that has long been missing in the domestic DIY market:

• 50-year service life expectancy
• Flame free installation using water-based adhesives
• Superior weathering qualities
• Ability to withstand heat and freezing temperatures
• UV and Ozone resistant, which slows the aging process
• Modern, seamless protection from leaks

EPDM Kit Builder

PermaRoof’s EPDM Kit Builder App is our free, online tool designed to simplify and automate quantifying. By entering measurements and project details, such as adjoining walls and extrusions, for instance, you can produce your own, tailored EPDM kit list. Submit your list to us and we’ll give you a no obligation quote. If you wish, we’ll talk it through with you afterwards, making sure you have everything you need in exactly the right quantities. 

Try the Kit Builder here >

When to choose a liquid garage roof

Liquid coatings offer a fast and easy route to waterproofing concrete and metal roofs or those with complex designs or extrusions. It is applied in a single coat, using a series of rollers and brushes and utilises an embedded bandage-like matting, curing fast to form a membrane-like surface. It literally fits the parts that membrane simply can't reach.

PermaRoof’s P100 liquid roofing solution was launched following the success of our P500 system, developed for large and complex commercial flat roofing projects. 

Ready to get started?

We want to make buying and installing your DIY garage roof kit as fast and straightforward as possible. All you need are accurate project length and width measurements. Simply select and purchase your standard sized garage roof kit or enter your own size and we’ll do the rest.

We offer standard single and double garage EPDM roof kits, complete with RubberCover membrane, adhesive, sealant and the PermaRoof edge and gutter trim system. For non-standard projects, we provide an enter-your-own-size option.

P100 is available in complete roof kits, ideal for garage roofing. We offer 5m2 and 10m2 kits, including the full liquid roofing system, rollers and primer. Edge trim for liquid roofing is available separately here. 

PermaRoof’s corporate resource library is packed with installation guides, video tutorials, product and technical information. We can build garage roof kits, cut to any size to suit your needs and can help you decide which system will best suit your project – get in touch by phone, email or chat if you need assistance with your order.

This is an updated, 2024 version of a popular historic blog post. To read the original version, please click here.