3.7.4
Vertical Surfaces
Slate shall be fitted neatly around pipes, ventilators, chimneys and other
vertical surfaces.
3.7.5
Hips
Hips shall be laid to form a [fantail] [saddle] [mitered] [Boston] hip as
shown.
3.7.6
Ridges
Ridges shall be laid to form [comb] [saddle] [strip saddle] ridges. The
nails of the combing slate shall pass through the joints of the slate
below. The combing slate shall be laid with the same exposure as the next
course down. Combing slates sloping away from the direction of the
prevailing storms shall project 25 mm 1 inch above the combing slate on the
opposite side of ridge.
3.7.7
Valleys
Valleys shall be laid to form [closed] [open] [round] valleys.
3.8
ACCESSORIES FOR SLATE ROOFS
3.8.1
Crickets or Saddles
Vertical surfaces which project through the roof surface at a right angle
to the slope of the roof shall have a cricket (sometimes referred to as a
saddle) built into the roof to divert water away from the back of the
vertical member, as shown. Crickets of light rafter construction covered
with sheathing, underlayment, and copper sheet metal specified in Section
07600 FLASHING AND SHEET METAL. If the cricket area is large and exposed
to view, it shall be slated the same as other roof areas. Open-type
valleys shall be formed with the main roof at cricket areas. The size of
the cricket is largely determined by the roof condition. Unless noted
otherwise, the slope of the cricket shall be the same as the slope of the
roof.
3.8.2
Snow Guards
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NOTE: Snow guards are necessary accessories for
most slate roofs in sections of the country where
masses of snow and ice accumulate on the roof that
can slide from the roof onto lower roof surfaces and
gutters. Snow guards are manufactured in various
forms, and each type requires different methods of
application. They may be obtained from slate
distributors, quarriers of roofing slate, or
manufacturers. Edit to meet project requirements.
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Nonferrous metal show guards shall be provided as indicated.
-- End of Section --
SECTION 07310
Page 12
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