Rubba Seal, Rubber Roofing Waterproof Membranes
The 'onepiece' flat roof solutions

Chris Brown, West Drayton

"You might like to know how pleased I am with all aspects of my order,delivery, installation instructions, telephone assistance etc.   Not a big order by some of your standards but, as a DIY installation, and, in my case, working 30 feet up on a loft conversion dormer window, it went very well indeed and I cannot fault any aspect of the job.  The instruction sheets were particularly clear and helpful and, the design, and fitting, of the edge trims and gutter edging, were simplicity itself and far superior to some systems which I investigated prior to my own installation."

"Many thanks for a very good, and highly recommended product, which is particularly suitable for a reasonably competent DIYer and, of course, a very great cost saving in avoiding the expensive professionals."

EPDM Membrane Roofing, Flat Roof Waterproofing UK, Commercial Roofing

Firestone Rubber Roofing Frequently Asked Questions

What is RubbaSeal EPDM?

EPDM means ethylene propylene diene monomer. It is a synthetic rubber, with outstanding weatherproof properties, developed over 20 years ago.


I have never installed a rubber flat roof… is it easy?

Our RubbaSeal kits are specifically designed for the competent DIYer.



Do I need specialist equipment to install my new rubber roof?

You should only need basic hand tools for a straightforward roof. eg. tape measure, shovel, broom, hammer, handsaw, rubbish bags etc.



How long does it take to install?

The average (15m2) rear extension should only take a morning to fit (unless there is a lot of timber preparation or complex details to weatherproof.)



I am worried about stripping off my old roof and leaving it exposed to the elements!

We strongly advise our clients to check both the weather forecast and that they have the correct materials on site prior to starting. The beauty of the RubbaSeal system is that if you do get caught in an unexpected shower you have a pre-cut weatherproof sheet to hand, which you can use as a tarpaulin.



Do I need to strip off my old roof?

It depends if the timber substrate is sound. If there has been a long term leak, or the decking is chipboard, then the roof may need reboarding in places. If the substrate is sound and the felt cleaned of dust etc then the EPDM can probably be adhered directly to it  using contact adhesive. 



Are the products safe to use?

Yes and all products are supplied with clear instructions and Safety Data Sheets. Sensible precautions should be taken ie. do not inhale adhesive fumes, do not allow children access to the products etc.



How long will my roof last?

Your new RubbaSeal membrane is guaranteed not to fail due to weathering for 20 years. It is essential that the product is installed in accordance with our detailed instructions.



Is RubbaSeal environmentally friendly?

Yes, RubbaSeal EPDM is an inert material with limited environmental impact during manufacture and installation.


Can I use Rubba seal in really hot or really cold weather ?

For the best results use in mild conditions,the adhesives should not be used if temperatures are likely to be below 5 degrees celsius within 24 hours.


Can I use RubbaSeal on top of insulation boards to create a warm roof?

We recommend a ply faced insulation board eg Kingspan TR31 or similar.


Can I stick RubbaSeal to felt-fibreglass-asphalt-concrete ?

Our water based adhesive is designed to adhere to timber. Contact adhesive can be used for this type of application but is very tricky to do on large areas. We strongly recommend overboarding roofs with a minimum 10mm ply or OSB



My RubbaSeal appears to be quite chalky, is that OK ?

Chalk is used in the manufacturing process to prevent the membrane sticking together. It will gradually weather off and does not affect it's lifespan. Alternatively, use  a cloth lightly damped with unleaded petrol for immediate results.


I have some wrinkles in my RubbaSeal, is this a problem?

There may be wrinkles or creases in the membrane. These may be caused in manufacturing or shipping. Open out and allow the membrane to "relax" for as long as possible prior to adhering. For stubborn creases a gentle heat source (eg a heat gun or hairdryer)should be applied prior to adhering.


Can I install RubbaSeal in the rain?

The water based adhesive will work on damp timber but is not designed to be used in the rain


My roof has some chalky marks on it, is this ok?​

These marks are quite normal and will disappear after weathering. It is just excess mica dust used in the manufacturing process.