Been to look at a job last week for some blown units, these had been blown a while so nothing to do with this contractor but the homeowner was having some thermal cladding fitted via a grant, this topic has come up before on here regarding the contractors extending the existing pvc window cills obviously as the cladding is quite thick, the issue was they just stick the new cill which is just a fascia capping board over the top of the existing cill but this clearly blocks the inbuilt concealed drainage, i don't know if they know this or where they expect the water to go, obviously its going to trickle down behind the newly installed cladding doing untold damage below, maybe even appearing as damp reveals on the downstairs windows.
