ᐅ Wood fiber boards instead of roofing underlayment membranes
Created on: 13 Feb 2017 00:43
K
Kaspatoo
Hello,
We recently visited a building materials supplier, and they recommended wood fiber boards instead of roofing underlayment, without us asking. I’m now trying to find out if they are really as advantageous as described, or if it was mainly a sales pitch.
The wood fiber boards are said to offer the following benefits:
- significantly better roof insulation
- about 7 to 8 hours of heat retention (meaning the sun can shine on the roof for that long before the heat passes through)
- noticeably better soundproofing
The price mentioned was around €15 per square meter (about €7 for materials, €7 for labor).
This would replace roughly €4 per square meter in material costs for the underlayment.
Overall, the extra cost is approximately €2000.
Has anyone here given this some thought or already had experience with this?
We recently visited a building materials supplier, and they recommended wood fiber boards instead of roofing underlayment, without us asking. I’m now trying to find out if they are really as advantageous as described, or if it was mainly a sales pitch.
The wood fiber boards are said to offer the following benefits:
- significantly better roof insulation
- about 7 to 8 hours of heat retention (meaning the sun can shine on the roof for that long before the heat passes through)
- noticeably better soundproofing
The price mentioned was around €15 per square meter (about €7 for materials, €7 for labor).
This would replace roughly €4 per square meter in material costs for the underlayment.
Overall, the extra cost is approximately €2000.
Has anyone here given this some thought or already had experience with this?
I am also curious about how it works without an underlay membrane.
=> hydrophobic wood fiberboard (e.g. bituminized or latex-coated)
I came across this because companies like Gutex, Pavatex (ISOLAIR), and Celit offer these.
THESE treated wood fiberboards are supposed to be vapor-permeable, windproof, and water-resistant, right?!
=> hydrophobic wood fiberboard (e.g. bituminized or latex-coated)
I came across this because companies like Gutex, Pavatex (ISOLAIR), and Celit offer these.
THESE treated wood fiberboards are supposed to be vapor-permeable, windproof, and water-resistant, right?!
Ulrich Fuckert schrieb:
I have seen too many roof structures with a wood fiberboard that ended up with significant mold growth. But the photo on the left was from a new build, right?
K
Knallkörper29 Jul 2017 01:32Ulrich Fuckert schrieb:
I have seen too many roof trusses that included a wood fiberboard, which unfortunately led to significant mold growth.But that is a solid wood boarding combined with what is likely a missing vapor barrier!
