We are currently having a house built.
The roof was not fully boarded with wood; instead, according to the building specifications, a highly vapor-permeable, waterproof underlay membrane was laid over the rafters. It is a green membrane. During the roofing work, this membrane was punctured because, according to the roofer, the lift got stuck and a tile fell off.
We have raised the issue several times. Each time, we were assured that all holes were sealed with a special adhesive.
Has anyone had experience with this issue?
We are now worried that the membrane may not be watertight and that water could penetrate. This would cause significant damage since the entire drywall insulation would become soaked. It would probably take some time before such damage becomes noticeable.
Who can confidently assure us that the membrane is actually watertight?
The roof was not fully boarded with wood; instead, according to the building specifications, a highly vapor-permeable, waterproof underlay membrane was laid over the rafters. It is a green membrane. During the roofing work, this membrane was punctured because, according to the roofer, the lift got stuck and a tile fell off.
We have raised the issue several times. Each time, we were assured that all holes were sealed with a special adhesive.
Has anyone had experience with this issue?
We are now worried that the membrane may not be watertight and that water could penetrate. This would cause significant damage since the entire drywall insulation would become soaked. It would probably take some time before such damage becomes noticeable.
Who can confidently assure us that the membrane is actually watertight?
Hello!!
I believe this is a construction defect and that it definitely needs to be replaced. Sure, everything can be glued, but whether it will last for many years is questionable.
It is also certain that gluing is a way to cover up the issue. It might hold for the moment or even for a few years, but the roof structure will likely last a lifetime. Maybe there is an option to cover a large area with a new roofing underlay membrane and then weld the joints...
However, you might want to consult another roofing company or building contractor to get their opinion on this...
Best regards.
I believe this is a construction defect and that it definitely needs to be replaced. Sure, everything can be glued, but whether it will last for many years is questionable.
It is also certain that gluing is a way to cover up the issue. It might hold for the moment or even for a few years, but the roof structure will likely last a lifetime. Maybe there is an option to cover a large area with a new roofing underlay membrane and then weld the joints...
However, you might want to consult another roofing company or building contractor to get their opinion on this...
Best regards.
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