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Dormer Roof - Upton, Northampton
.jpg "Removing the lead from the back of the dormer roof")
Removing the lead from the back of the dormer roof
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.jpg "The wooden mop rolls had already been cut")
The wooden mop rolls had already been cut
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.jpg "The dormer roof was redecked")
The dormer roof was redecked
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.jpg "We recoated the wooden mop rolls")
We recoated the wooden mop rolls
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.jpg "A double coating of liquid membrane top coat completes the 25 year system")
A double coating of liquid membrane top coat completes the 25 year system
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This dormer roof in Upton, Northampton NN5 presented some interesting problems.
The new build lead work had been installed with the aim of directing rainwater back from the dormer roof to drain off the sides, a method that relieves the need for a high level front gutter. However, that design seemed to be have been changed halfway through the installation - so that somehow the rear gutter was installed flat without the stepped rear box gutter necessary to drain the water away.
The lead bays should have been stepped up at least 100mm to accommodate the height of the rear stepped box gutter. Without these features, during rainfall and storms, water was pouring off the front of the dormer with sudden gusts of wind drenching the front porch entrance doorway.
The brief was to renew the lead bays and dormer roof while the house was still occupied, with no more damage than had already occurred, and to create a better fall back towards the slate roof.
The wooden mop rolls had already been cut as in picture 2 by other lead workers, who had attempted to lead burn the mop roll ends to make a box gutter.
Our first stage was to repair the lead burning detail in the rear box gutter with Proteus Hydrobond G. The roof was then redecked with tilting furring to direct rainwater to fall better to the rear gutter.
The first coat of the 25 year BBA Certified liquid membrane system with heavy gauge matting was installed as per Tor Coating Manufacturers specifications, the rear box gutter & upstand fully lined and the slates replaced, and the mop rolls reinstalled ready for coating.
Following this, 2 coats of lead grey liquid membrane top coat were installed to complete the 25 year system, leaving a dormer roof that will last... and do what it's supposed to do with the rain!
Find out how we can help with your roof by calling 01970 610047 today