Our problem area is roofs with the older black sarking
felt as they don''t breathe.
Check the wall head and make sure the sarking
boards (underside of roof) are dry, as you might have a drip.
I like working with recycled wood, and even use roofing sarking
, which has a lovely, rough texture.
Once the moisture is exposed to the cold underside of the sarking
felt under the slates or tiles it can only mean one thing - condensation.
It is also used for roofing as sarking
board and most likely forms your shed roof.
On older buildings which don't have sarking
felt beneath the slates, a peep into the loft space without a torch will tell you where the slate has come from, as daylight will shine through.
Slate roof to be stripped and set aside to sarking
, repairs of existing sarking
, new vapour control layer, new insulation, new sarking
above and reinstate slates, one conventional eaves to be modified .
The result of all of this extra humidity is a blue/grey bloom develops on the underside of the sarking
felt and on the rafters.
Slate or tile roofs installed before the Second World War rarely had any sarking
felt beneath the slates or tiles.
It includes the removal and replacement of existing slate, concrete tile and felt roof coverings, and the localised removal of small roof lights and infill to sarking
The slow seeping leak was being caught by the underlining of sarking
felt, until last Friday when a full day of rain burst its way through and on to the bathroom ceiling.
Speculative Sub-Contract Opportunity: Fabric Repairs to 89-95 Oscar Road, Aberdeen (H1060)Nature of project: Localised removal of existing roughcast / render facade finish, structural repairs, external wall insulation over cladding works and the application of new roughcast / render facade finish, removal and replacement of existing windows and installation of aluminium cover flashings to cills, removal and replacement of guttering / down pipes / service pipes, alteration works to existing overflow and waste water pipes, inspection / alterations of domestic gas central heating installation, replacement of gas flue pipes, painting works externally to windows, facade, down pipes etc, installation of extractor fans, replacement works to roof sarking
, slates and lead work.