Had a new garage conversion done into a habitable room.
The roof wasn't vented, the roof space above it is only 6 metres squared but NHBC say anything over 3 metres squared needs venting. It's basically rockwoll on top of plasterboard ceiling (no hatch access). It's a lean to roof that abuts against the 2nd storey of my property.
The new window basically covers the full soffit board so I can't fit soffit vents, there is also insulation in the space above the soffit board and i dont think over fascia vents would work as insulation is basically stuffed into the eaves and im not willing to cut plasterboard away to move it all, plus im hoping to do the job myself and think fascia vents look a bit fiddly.
Would a roof tile vent (or 2) be effective enough to prevent condensation issues in the roof void? If I position them close to the top of the roof? Or is it useless without fascia/soffit vents?
Or alternatively would felt lap vents do the job if I put one on each side of the roof at the same level (only if I can access the overlap externally will I consider this, a few rows of tiles aren't nailed down but a few rows are so it depends if I can access without removing nails as I feel that's more tricky than just lifting the unfixed tiles).
The tiles are double roman concrete interlocking.
The roof wasn't vented, the roof space above it is only 6 metres squared but NHBC say anything over 3 metres squared needs venting. It's basically rockwoll on top of plasterboard ceiling (no hatch access). It's a lean to roof that abuts against the 2nd storey of my property.
The new window basically covers the full soffit board so I can't fit soffit vents, there is also insulation in the space above the soffit board and i dont think over fascia vents would work as insulation is basically stuffed into the eaves and im not willing to cut plasterboard away to move it all, plus im hoping to do the job myself and think fascia vents look a bit fiddly.
Would a roof tile vent (or 2) be effective enough to prevent condensation issues in the roof void? If I position them close to the top of the roof? Or is it useless without fascia/soffit vents?
Or alternatively would felt lap vents do the job if I put one on each side of the roof at the same level (only if I can access the overlap externally will I consider this, a few rows of tiles aren't nailed down but a few rows are so it depends if I can access without removing nails as I feel that's more tricky than just lifting the unfixed tiles).
The tiles are double roman concrete interlocking.
