Flat roof developed 3 leaks successively over the past few weeks. Time to get it replaced as I currently have a tarp over it. Two quotes…both flat roof specialists, both rubber membrane roofs with slightly different approaches, one with insulation underneath, one with brand new plywood laid over existing plywood after the tar and gravel has been removed (contractor said no need for added insulation here since we already have some in ceiling space and insulation would raise the roof level upward towards existing window sills in case of snow build up). $10K difference between the two quotes! Went with the cheaper one (no added insulation), $20k Room under roof doesn’t suffer from any heat/cold issues.
2y work warranty, 10y materials. Membrane should last for 25 years. Will get brand new drains and a built up parapet around edge of roof and the membrane will be laid up under siding and flashing and an existing sloped roof halfway under the shingles to create a nice waterproof bowl.
Looking forward to not cleaning up plaster falling from the ceiling soon and looking forward to not having to clear up loose bitumen and crap on my deck that blows off the roof in storms.