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Author Topic: Roof Felt Noise  (Read 13341 times)

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Roofman

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Roof Felt Noise
« on: January 27, 2018, 06:44:10 pm »
Dear all

Does anyone have any experience with regards to the below YouTube link?

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The "wrapping sound" can be heard in all bedrooms - which you can appreicte is horrendous.

Thanks


Site carpenter

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Re: Roof Felt Noise
« Reply #1 on: January 27, 2018, 09:19:44 pm »
Modern materials strike again.  This problem never occured with the old reinforced tar felt. Basically who ever fitted the membrane did not stretch it over the roof rafters, so it is now flapping about in the wind. Not any easy fix unfortunately. I think you have three choices.
1)  Increase the depth of insulation above the ceiling using rock wool.
2)  Cut 25mm insulation board  and stick it in between the rafters against the felt.
3)  Spray or paint the areas that are flapping about, with some sort of glue, this may make the felt more rigid and stop the flapping. However this requires caution as some glues contain solvents that might melt the felt. If you do decide to use a glue , try a small area first and make sure it does not damage the felt. Also read the Health and safety warnings on the spray cans, some of that stuff is really bad if you breath it in.
Hope this helps, let us all know how you get on.


New Home Expert

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Re: Roof Felt Noise
« Reply #2 on: January 29, 2018, 06:38:15 am »
This is caused by the breathable membrane such as TLX UV15 "Professional Breathable Pitched Roofing felt."

Another issue is the overhang in the guttering vibrating in high winds too.

All you can do is add some support battens between the rafters with glue to stick the membrane down.
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