3.5.6
Vertical Membrane Flashings
Vertical wall installations shall receive primer prior to the application
of membrane. Primer shall be applied at a coverage rate of 6-9 sq.
meters/L. 250-350 sq. ft./gal. Membrane shall be turned up walls and
dormers as indicated on the drawings. Vertical membrane terminations shall
be mechanically fastened. Vertical terminations shall receive a troweling
of mastic as approved by the membrane manufacturer. Membrane may be folded
onto the fascia, provided it will be covered by a gutter metal edge or
other material.
3.5.7
Protection
Elastomeric membrane underlayment shall not be left permanently exposed to
sunlight. Membrane shall be covered with exposed roofing materials as soon
as possible. Membrane damaged due to exposure to sunlight shall be patched
prior to the application of final roof covering.
3.6
METAL FLASHING
Metal flashing shall be as shown at intersections of vertical or projecting
surfaces through the roof or against which the roof abuts, such as walls,
parapets, dormers, and sides of chimneys. Flashing installation shall be
in accordance with Section 07600 FLASHING AND SHEET METAL.
3.7
CLAY ROOFING TILE (GENERAL)
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NOTE: To ensure a watertight roof system, strict
observance of minimum pitch requirement is
necessary. Minimum roof pitches for the different
types of clay tile shall be: one-piece barrel:
4:12; two-piece barrel: 5:12; flat shingle: 5:12;
interlocking shingle: 3:12.
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3.7.1
Repair and Replacement
Existing reusable clay tiles removed from the repair area shall be
intermingled with new clay tiles to provide a smooth visual transition
between new and existing areas.
3.7.2
High or Low Slope Pitches
Tiles [on roof slopes of less than 3:12 shall be applied over indicated
underlayment on solid decking.] [on extremely steep or vertical
applications, shall have the butt of each tile set with mastic or sealant,
and placed where it will not be seen. The mastic or sealant shall not
stain the surface of the tile. Copper "hurricane clips" may be installed
instead of using mastic or sealant.]
3.7.3
Roof Decks and Fasteners
Tile shall be fastened to roof deck materials as follows:
DECK
FASTENER
___________
___________
Plywood
Slater's ring shank nail.
Point
SECTION 07320A
Page 11
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