Roof folie

[cristi]

Hi everyone, today I took down my chimney because I don't need it and with this step, I made clear my roof for the solar panels shadow-free.

Now...when I took off the tiles I realized that is no foil on to the roof, so my plan is to take everything down and to place a roof foil+ battens+ battens+tiles
I'm planning to staple the foil to the wood boards, then mount the battens.. etc; the roof will be isolated from inside with 20/25 cm wool.

Is still need for foil from inside to?
What foil should I use on the roof?



Thanks

 

[wgb]

Je hebt aan de binnen-en buitenkant een folie nodig. Aan de binnenzijde een dampremmende PE folie van 0,2mm dik of intelligente damprem. Aan de buitenzijde een onderdakfolie deze folie is belangrijk omdat mocht er water of sneeuw voorbij de pannen komen loopt dit over de folie in de dakgoot. Plaats je geen onderdakfolie zal het heel lang duren voordat een lekkage zichtbaar gaat worden. Dit is het gevolg van de dampremmendelaag aan de binnenzijde van de constructie.

The above has been translated by Google.
You need a foil on the inside and outside. On the inside a vapor-resistant PE foil of 0.2 mm thick or intelligent vapor control. On the outside, a roof foil, this foil is important because if water or snow passes the tiles, it runs over the foil in the gutter. If you do not place an underlayment film, it will take a very long time before a leak will become visible. This is due to the vapor barrier layer on the inside of the structure.

 

[IJkenhout]

Is it a freestanding house? Than you better mount a new roof (dakplaten) with insulation on the outside.

 

[cristi]

Thanks, guys for your response, Yes it is a freestanding house but I will isolate it from inside because I wanna make some changes on to the existing ceiling.

I decide to go with the * Pro on the outside, or fo you think that the normal is good enough?

 

[IJkenhout]

The Pro has a Sd-waarde: 0.02 and the normal: 0,05. The Pro is maybe stronger, better to walk on.

Insulation on the outside is always better. If the job is big enough (like here), it's better to do it properly, so a new roof from the outside. I expect the difference in costs is minimal.

Don't forget to seal all cracks and holes. And make sure the ventilation inside is sufficient.

We don't compare brands and shops, so I removed them from your answer.