Most people have in mind the old ‘pour and roll’ felts of yesteryear, and these were thin bitumen felts glued together with a hot liquid bitumen between each layer.
Once your new roof is installed, you’ll want to verify it meets all quality standards and is backed by proper warranties.
I need emergency roof repair services as soon as possible.
The variation in lifespan depends often on whether the flat roof holds water, the amount of details and joints, as well as the quality of workmanship.
PVC membrane or Polyvinyl Chloride has been around since the 1960’s, so it has a good proven track record.