Good or bad roofing membrane/underlay.

[bengasman]

Are there any brands of breathable membrane for cement roof tiles that are decidedly better than others, or particular types/brands best avoided?
It's going on a typical oap bungalow of about 8 by 9 metres footprint with Redland 49 tiles at 25° pitch.
Rafters will be clean of splinters and damage and tacking of the membrane can be done in whatever way is best e.g. direct with felt nails, tacked, under slats.
The old girl doesn't have money to burn so fancy/expensive options are out.
Toa.

 

[freddiemercurystwin]

//www.diynot.com/forums/roofing-guttering/which-roofing-membrain-or-underlay-to-use.291439/

 

[shane12345]

I use mid range Cromar, the blue one. £44 a role and it is decent quality.

I'd strongly suggest against the cheapo 20 odd quid stuff as that is way too thin and damages easy.

 

[Toproofer]

Proctor roof shield is what I use all the time,abit dearer but IMO the best out there