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Installation of a rubber roof. Roof repair flashing

This EPDM rubber roof in Wilton was a surprise. We
When we got this job I was surprised to see how I could bounce on the roof. There was something wrong and we had to find out what made the roof bounce like that.

After investigating we found that the insulation board under the rubber roof was not fastened properly. The EPDM rubber could not hold the insulation down either.  The reason why the insulation board curled up is because

the EPDM rubber roof started to leak around the drain and edging and caused water to saturate the insulation making it curl.

This EPDM roof was leaking and caused the insulation underneath to curl up.

Flat roofs properly installed can outlast any shingled roof. It is the technique that fails and not the rubber roof. Every rubber roof requires a special technique. If not correctly used any rubber roof can fail. Once we fastened the Insulation board underneath the membrane, we installed a new Modified Bitumen Membrane.

After removing the EPDM rubber we replaced the roof with Modified Bitumen Rubber membrane.

After removing the EPDM rubber we replaced the roof with Modified Bitumen Rubber membrane.

The most important part a roof is the flashing. Many times the rubber roof itself is very good and all the seams are well attached. But often the failure is at the transition from the rubber to the metal flashing. Every roofing material has different methods of attaching to the metal. All the methods are influenced by weather, type of adhesives, and experience of the roofer.


Adhesives are used to adhere the rubber roof to metal flashing. EPDM uses contact cement which the EPA has banned now. They have to resort to alternative methods.

Modified Bitumen has its own problems. The method manufacturers suggest has not been very successful. We at Flat Roof doctor have come up with our own secret method and for the last 20 years had no failures on flashing adhesion.