A
ariovist81 Oct 2011 15:43Hi everyone,
I built a house in 1997. The company I bought the house from back then was made up of two architects. The architects still exist, but the company no longer does. The company that installed the breathability membrane is probably still around.
Today, I moved my satellite dish to make room for the photovoltaic system. While doing that, I noticed that the breathability membrane is no longer waterproof. Back then, they rolled out 2m or 4m (7 feet or 13 feet) wide sheets over the roof and taped the seams together with a special adhesive tape. That tape has now completely dried out and no longer sticks.
Now, on almost every side of the roof, there are three tears in the membrane from the ridge down to the gutter. What should I do? Can I still file a claim? Could this be considered a hidden defect? Maybe someone has experienced something similar?
Best regards, ariovist8
I built a house in 1997. The company I bought the house from back then was made up of two architects. The architects still exist, but the company no longer does. The company that installed the breathability membrane is probably still around.
Today, I moved my satellite dish to make room for the photovoltaic system. While doing that, I noticed that the breathability membrane is no longer waterproof. Back then, they rolled out 2m or 4m (7 feet or 13 feet) wide sheets over the roof and taped the seams together with a special adhesive tape. That tape has now completely dried out and no longer sticks.
Now, on almost every side of the roof, there are three tears in the membrane from the ridge down to the gutter. What should I do? Can I still file a claim? Could this be considered a hidden defect? Maybe someone has experienced something similar?
Best regards, ariovist8
Hello ariovist8
What do you mean by diffusion membrane? There is only one vapor barrier, and it is installed on the interior side of insulated pitched roofs (to prevent moisture from the living space from entering the insulation).
Then there is a series of underlay membranes that go on the roof itself. These are installed horizontally, running parallel to the eaves (gutter), with an overlap of at least 10cm (5 inches); on shallower roofs, the overlap is increased. Installing the membrane vertically like that is not correct. There are adhesive tapes for these membranes, but they do not remain sticky forever.
What kind of membrane is it (PE or more like a type of paper or fabric)?
Is your roof insulated?
Best regards, Sven
What do you mean by diffusion membrane? There is only one vapor barrier, and it is installed on the interior side of insulated pitched roofs (to prevent moisture from the living space from entering the insulation).
Then there is a series of underlay membranes that go on the roof itself. These are installed horizontally, running parallel to the eaves (gutter), with an overlap of at least 10cm (5 inches); on shallower roofs, the overlap is increased. Installing the membrane vertically like that is not correct. There are adhesive tapes for these membranes, but they do not remain sticky forever.
What kind of membrane is it (PE or more like a type of paper or fabric)?
Is your roof insulated?
Best regards, Sven
H
Häuslebauer4011 Nov 2011 06:10There’s nothing left to claim. The warranty period has long expired...
Hello!
Apparently, this is an unheated attic space not used as living area. Still, there is a vapor barrier and insulation.
I think it’s great that you have never had any mold issues – and with this "forced ventilation," that will probably continue to be the case.
But – what exactly was the problem?
Best regards,
TomTom1.
Apparently, this is an unheated attic space not used as living area. Still, there is a vapor barrier and insulation.
I think it’s great that you have never had any mold issues – and with this "forced ventilation," that will probably continue to be the case.
But – what exactly was the problem?
Best regards,
TomTom1.
H
Häuslebauer4012 Nov 2011 23:13So, where exactly is the problem? As long as the insulation does not become damp, you won’t have any issues.
Hello ariovist
I completed my training as a roofer in 1997. Back then, the membrane was always installed horizontally along the eaves, and this practice has not changed to this day. So, it is a defect, even if the architect claims it is done differently.
It will probably be a vapor-permeable membrane. The company Dörken has such a product in their range, which is actually a type of counter-batten membrane. The membranes are usually stapled directly onto the rafters, unless there is a sheathing on the rafters, in which case the underlay membrane is naturally installed on top of the sheathing.
And @ Häuslebauer
As long as no tiles are broken and no water gets underneath the roof covering, there won’t be a problem. However, it remains a defect.
Best regards, Sven
I completed my training as a roofer in 1997. Back then, the membrane was always installed horizontally along the eaves, and this practice has not changed to this day. So, it is a defect, even if the architect claims it is done differently.
It will probably be a vapor-permeable membrane. The company Dörken has such a product in their range, which is actually a type of counter-batten membrane. The membranes are usually stapled directly onto the rafters, unless there is a sheathing on the rafters, in which case the underlay membrane is naturally installed on top of the sheathing.
And @ Häuslebauer
As long as no tiles are broken and no water gets underneath the roof covering, there won’t be a problem. However, it remains a defect.
Best regards, Sven
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