I am looking for some advice on how to fit a felt upstand and lead flashing against a stone wall.
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The original flashing is shown following the mortar line of the blocks in the middle, then it goes under the larger blocks at the end. I have attached some temporary stick on flashing to seal it at the moment, which can be seen.
The lead flashing presently fitted is only 80mm going down to almost level with the outer blocks above the roof and had no felt upstand underneath, due to it following the original mortar joints.
I am just wondering what is the best way to fit the felt upstand and where to fit new lead flashing (height wise)
Just to get a perspective of measurements.
Height to underside of window ledge from roof is 280mm
Three coarses of stone blocks beneath window, each at a height of approx 90mm.
The larger stone blocks on either side of the window are the height of the three coarses.
The mortar coarse is continuous above and below the larger blocks.
from info that I have gained the felt and flashing should be about 150mm above the roof but this would mean cutting a slot in the larger stones (reluctant to do this, would they later crack?)
Any advice would be much appreciated.
Julian
The original flashing is shown following the mortar line of the blocks in the middle, then it goes under the larger blocks at the end. I have attached some temporary stick on flashing to seal it at the moment, which can be seen.
The lead flashing presently fitted is only 80mm going down to almost level with the outer blocks above the roof and had no felt upstand underneath, due to it following the original mortar joints.
I am just wondering what is the best way to fit the felt upstand and where to fit new lead flashing (height wise)
Just to get a perspective of measurements.
Height to underside of window ledge from roof is 280mm
Three coarses of stone blocks beneath window, each at a height of approx 90mm.
The larger stone blocks on either side of the window are the height of the three coarses.
The mortar coarse is continuous above and below the larger blocks.
from info that I have gained the felt and flashing should be about 150mm above the roof but this would mean cutting a slot in the larger stones (reluctant to do this, would they later crack?)
Any advice would be much appreciated.
Julian