The Measure of the Man
April 13th, 2009
Valley roll
January 12th, 2009
New stepped valley constructed in timber and according with best practice. Ready for lining.
With the tapered gutter, the pitched roof merges into the sole of the gutter without upstands. Thus, according to the fall of the gutter and the pitch of the roof, the gutter is wider at its highest point than at its lowest, the lower the pitch the more the gutter widens.*
*from Lead Sheet in Building published by the LDA 1978
When breathed upon or otherwise rendered moist
December 26th, 2008
Two hundred year old roof, Lake District UK. Lead dowel used to fix slates to battens. It is more usual to find timber dowels or iron nails.
Westmorland slates reclaimed from the roof.
Slates are tested for quality by their thickness, clean smooth cleavage, toughness to allow of holing for nails, and resistance to water. A good slate partially immersed in water should not absorb water to any appreciable extent above the water line…It should also give a clear ring when struck with the knuckles and when breathed upon or otherwise rendered moist, should not emit a clayey odour.
From Architectural Building Construction Vol 2 by Jaggard & Drury, Cambridge University Press 1945
Architecture & Chemistry
December 18th, 2008
Demolished on December 1st 2008, this house at 157 Harper Rd London was a
council flat filled with hot concentrated copper sulphate solution which was
allowed to cool before draining. Visitors had to wear wellingtons. It was
very blue. (artist: Roger Hiorns)











