I have just had my 1920's detached house roof re-tiled with large format clay interlocking tiles - Marley Domino. with the installation I have had Tyvek felt installed my problem is that I have lots of condensation forming on the inside of the roof.
The technical guy from Tyvek came out and said to cap off my chimneys (these were removed to loft floor level when roof was re-tiled) and to cap off the cavity in the wall as it was open into the loft. I have done this but still have large quantities of condensation.
I dont have any ventilation at the moment as Tyvek man said I dont need any with there felt but I am considering introducing Lapvents www.lapvent.co.uk and soffit vents as I wish to convert part of the loft into a room and cannot have condensation forming behind the insulation. The floor of the loft space is also insulated to around 200+mm Will installing lapvents and soffit vents sort out the condensation ? I also have my combi boiler in the loft which could be adding to the problem.
The technical guy from Tyvek came out and said to cap off my chimneys (these were removed to loft floor level when roof was re-tiled) and to cap off the cavity in the wall as it was open into the loft. I have done this but still have large quantities of condensation.
I dont have any ventilation at the moment as Tyvek man said I dont need any with there felt but I am considering introducing Lapvents www.lapvent.co.uk and soffit vents as I wish to convert part of the loft into a room and cannot have condensation forming behind the insulation. The floor of the loft space is also insulated to around 200+mm Will installing lapvents and soffit vents sort out the condensation ? I also have my combi boiler in the loft which could be adding to the problem.