A rubber roof is just that a rubber membrane is placed over insulation panels which are fastened to the deck.
Roof drain piping insulation.
The membrane is cut out at each drain and is secured by the drains clamping collar.
In any event the storm water piping should be insulated for a minimum of 30 ft.
Storm water piping is also susceptible to condensation and should be insulated from the roof drain bowl to a point where the piping turns from horizontal to vertical.
Owens corning ssl ii with asj max fiberglas pipe insulation is molded out of heavy density resin bonded inorganic glass fiberglas that come in one piece 36 914mm long hinged sections.
Adjustable extension system can be adjusted to the thickness of insulation on top of the roof pipe size see chart bellow a1 body 8 203 5 retrieve doc.
From the roof drain.
Epdm roofs are water proof and tend to be expensive.
Pipe insulation fits around hot water pipes and reduces heat loss to save energy and lower energy costs.
Insul drain drainage board is designed specifically for foundations to improve thermal foundation performance through a higher r value.
R1100 eu roof drain for insulated roof deck specification.