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This FAQ addresses some of the most common enquiries about EPDM roofing, including how to install it, the tools required, and how it performs under various conditions. Whether you're looking to install EPDM on your own or simply want to understand its benefits and requirements, these answers will provide the insights you need.
Yes, EPDM rubber membranes can be joined using seam tapes along with a primer. We suggest using seam tapes as opposed to adhesives, as these tapes are specifically designed for creating long-lasting, secure joins (splices) on EPDM membranes.
It is not advisable to lay EPDM over felt, however if the roof deck and felt covering are in good condition, an EPDM installation is possible. In this instance, we would recommend a fleece-backed EPDM membrane to protect the existing roof coating - our Lineflex product is perfect for this application.
EPDM can bubble due to moisture or air trapped underneath the membrane once adhered. This can also occur if the surface isn’t dry during your EPDM roofing installation.
It is possible to walk on EPDM rubber roofing, however it is heavily recommended that walkway pads are used to protect the EPDM, especially in hot or cold weather conditions where the membrane may be susceptible to damage.
Basic tools are needed for an EPDM installation: this includes rollers for applying adhesive, seam rollers, knives/scissors for making cuts in the EPDM, and cleaning materials to prepare the roof deck for an EPDM installation.
Yes, roof tiles can be laid over your existing EPDM roofing using the waterproof base layer provided by the membrane. It is recommended that a support structure for the tiles, such as battens, is used to protect the EPDM.
Yes, contact adhesives are frequently used in EPDM installations, however we recommend using contact adhesives for items such as detail kits, and using water-based adhesives for the application of the membrane itself.
Yes, EPDM should be installed in dry weather conditions to prevent moisture from getting trapped between the membrane and roof substrate, otherwise, this could lead to bubbling or poor adhesion.
Cementing directly over EPDM is not advised. Cement does not adhere well to EPDM, and the alkaline nature of the concrete is likely to degrade the rubber over time, which can cause a failure in the waterproofing supplied by the system.
EPDM roofing typically comes in thicknesses of either 1.2mm (known as product code 045) and 1.52mm (known as product code 060). Thicker membranes are available, however this is only advised for commercial applications where greater durability is required.
Depending on the damage, EPDM roofing can be repaired through various means: for tears/holes in the system, an EPDM detail kit can be used in conjunction with a primer.
EPDM Detailing Kits, EPDM Repair
An EPDM green roof refers to an EPDM membrane used as a waterproofing layer underneath a vegetative - or green - roof system. As EPDM provides a durable and reliable waterproofing barrier, it is perfect for creating a waterproof layer beneath plant life and soil.
The thickness of the EPDM usually depends on the application and project requirements: for residential flat roofs, a 1.2mm membrane (045) is sufficient. However, for more demanding commercial applications, a 1.52mm thickness (060) is more appropriate.
Click on our friendly RoofBot to help you work out what you need for your DIY TRC - Techno Rubber project, just input your dimensions, answer some simple questions and let RoofBot do the rest. If you still need assistance, don't hesitate to contact us at info@rubba-seal.co.uk or 01494 461711.
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