......and the "F" word, for that matter. Sorry to touch a nerve on my first posting, but I am asking for any views on that Renotherm Foam stuff in a particular application.
My understanding from reading postings on this and other fora is that spraying gunk onto the underside of slates is a BAD THING . I understand the problem with rendering the slates unusable for the future. I think I understand that moisture could penetrate into the rafters and remain undetected until such time as the roof collapses. Hopefully I've grasped those basics, so here's my question:
I'm having a barn conversion done, and the living space will extend into the full height of the roof. The roof is felted. My architect is suggesting using the "R" stuff sprayed directly onto the felt as a means of insulation, more cost-effective than eg Kingspan. As the roof timbers have felt between themselves and the slates, does this mean that there is no longer a potential problem of water penetration and hidden rot? Or is that a naive assumption?
Any experiences or ideas gratefully received, as I'm going nuts trying to decide if this is a good idea - or am I being put off unnecessarily simply because of the "R" word?
My understanding from reading postings on this and other fora is that spraying gunk onto the underside of slates is a BAD THING . I understand the problem with rendering the slates unusable for the future. I think I understand that moisture could penetrate into the rafters and remain undetected until such time as the roof collapses. Hopefully I've grasped those basics, so here's my question:
I'm having a barn conversion done, and the living space will extend into the full height of the roof. The roof is felted. My architect is suggesting using the "R" stuff sprayed directly onto the felt as a means of insulation, more cost-effective than eg Kingspan. As the roof timbers have felt between themselves and the slates, does this mean that there is no longer a potential problem of water penetration and hidden rot? Or is that a naive assumption?
Any experiences or ideas gratefully received, as I'm going nuts trying to decide if this is a good idea - or am I being put off unnecessarily simply because of the "R" word?