Rubber flat roof flashing

If your on about the rubber on the flat roof running up the back wall then yes there should be a lead flashing over that... min code 4 lead required

yes it should have had a metal flashing supplied by the same company supplying the rubber glues & trims against the wall and trims or taped at any joins

Hello, Darren. Thank you for your question. I presume you are talking about the join between the EPDM and the existing building. Although the rubber roofing itself will adhere to the wall, it is best practice (and essential), that some form of roof flashing be fitted. This is usually a metal flashing chased into the mortar joint and dressed over the rubber upstand. This may not be the reason for your ceiling leak, but it would certainly be my first place of investigation.

Lead flashing is not used with EPDM roofing systems. It should be finished with a wall trim.

1st of all where the roof up stand returns up the wall (if it does ) should either have a chase metal sunk into the wall covering the membrane and be finished with lead seal or have lead dressed over . If by join you mean to another roof then not necessarily it depends on the 2 different types of roofs . Get them back to rectify