Echeguren Slate, Inc.
1620 Innes Ave.
San Francisco, CA 94124
Tel: (415) 206-9343
Toll-Free: (800) 992-0701
Fax: (415) 206-9353
E-Mail: slate@echeguren.com
Web site: http://www.echeguren.com
(a) Slate shall be furnished by Echeguren Slate, Inc.,
1495 Illinois Street, San Francisco, CA 94107, (415) 206.9343. Consult
with Echeguren Slate, Inc. for slate sizes available. (b) All slate shall
be hard, dense, sound rock, punched (or drilled) for two nails each. No
cracked slate shall be used. Most exposed corners shall be practically
full. No broken corners on covered ends which sacrifice nailing strength
or the laying of a watertight roof will be allowed.
(a) The entire surface of all roofs, unless otherwise
specified, and all other surfaces so indicated on the drawings, shall be
covered with slate as herein specified, in a proper and watertight manner.
(b) The slate shall project 2" at the eaves and from
1/2" to 1" as directed at all gable ends, and shall be laid in horizontal
courses with 2" - 4"" headlap depending on roof pitch and geographic location,
and each course shall break joints with the preceding one by at least 3".
Slates at the eaves or cornice line shall be doubled using same thickness
slate for under-eaves at first exposed course. Under eave slate to be approximately
3" longer than exposure of first course.
(c) Wood can’t strip at eaves to be furnished by others.
(d) Slates overlapping sheet metal work shall have the
nails so placed as to avoid puncturing the sheet metal. Exposed nails shall
be permissible only in top courses where unavoidable.
(e) Neatly fit slate around all pipes, ventilators and
other vertical surfaces
(f) Nails shall not be driven so far as to produce a
strain on the slate, nor left proud to stress overlapping slate.
(g) Cover all exposed nail heads with elastic cement.
Hip slates and ridge slates shall be laid in elastic cement spread thickly
over unexposed surface of under courses of slate, nailed securely in place
and carefully pointed with elastic cement.
(h) Build in and place all flashing pieces, snow-guards,
etc., furnished by the sheet metal contractor and cooperate with him in
doing the work of flashing. (if roofing contractor has the flashing and
sheet metal work under his contract, change this paragraph to suit.
(i) Upon completion, all slate must be sound, whole,
clean, and the roof shall be left watertight and neat in every respect,
and subject to the architect’s approval.
(a) On all surfaces to be covered with slate, furnish
and lay genuine asphalt saturated rag felt or an approved equal, not less
in weight than that commercially known as "30 pound" felt or equal.
(b) Felt shall be laid in horizontal layers with joints
lapped towards the eaves at least 2", and well secured along laps and at
ends as necessary to properly hold the felt in place and protect
the structure until covered with the slate. All felt
shall be preserved unbroken, tight and whole.
(c) Felt shall lap all hips and ridges at least 12" to
form double thickness and shall be lapped 2"" over the metal of any valleys
or built-in gutters.
(a) All slate shall be fastened with at least two large-head
slater’s solid copper nails. Use 3d (1-1/4") nails for slates 18" or less
in length, 4d (1-1/2") for 20" or longer, and 6d (2") for slates on hips
and ridges. (Thicker slates require longer and heavier gauge nails. The
proper size may be determined by adding 1 inch to twice the thickness of
the slate.) All nails should be of sufficient length to adequately penetrate
the roof boarding.
(b) (In the event the nailing base is other than wood,
change the above paragraph to suit material used.)
(a) All hips shall be laid to form "Fantail", "Saddle",
Mitered", "Boston", (to be inserted as desired).
(a) All ridges to be laid to form "Comb", "Saddle", "Strip
Saddle", (to be inserted as desired.) The nails of the combing slate shall
pass through the joints of the slate below.
(b) The combing slate shall be laid with the same exposure
as the next course down. (If desired, the combing slate sloping away from
the direction of prevailing storms may project 1" above combing slate on
opposite side of ridge.)
(a) All valleys shall be laid to form "closed", "Round",
(to be inserted as desired.)
(Specifications for flashing and sheet metal work to
be inserted here if included under this specification.)
CALL OR WRITE FOR ADDITIONAL GUIDELINES AND DETAIL
DRAWINGS.
Echeguren Slate, Inc.
1620 Innes Ave.
San Francisco, CA 94124
Tel: (415) 206-9343
Toll-Free: (800) 992-0701
Fax: (415) 206-9353
E-Mail: slate@echeguren.com
Web site: http://www.echeguren.com
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