PART 3
EXECUTION
3.1
PREPARATION
Coordinate work with that of other trades to ensure that components to be
incorporated into the waterproofing system are available when needed.
Inspect and approve surfaces immediately before application of
waterproofing materials. Remove laitance, loose aggregate, sharp
projections, grease, oil, dirt, curing compounds, and other contaminants
which could adversely affect the complete bonding of the fluid-applied
membrane to the concrete surface.
3.1.1
Flashings
Make penetrations through sleeves in concrete slab watertight before
application of waterproofing. After flashing is completed, cover
elastomeric sheet with fluid-applied waterproofing during waterproofing
application.
3.1.1.1
Drains
Make drain flanges flush with surface of structural slab. Apply a full
elastomeric sheet around the drain, with edges fully adhered to drain
flange and to structural slab. Do not adhere elastomeric sheet over joint
between drain and concrete slab. Do not plug drainage or weep holes. Cover
elastomeric sheet with fluid-applied waterproofing during waterproofing
application. Lap elastomeric sheet a minimum of 100 mm 4 inches onto
concrete slab.
3.1.1.2
Penetrations and Projections
Flash penetrations and projections through structural slab with an
elastomeric sheet adhered to the concrete slab and the penetration. Leave
elastomeric sheet unadhered for 25 mm one inch over joint between
penetration and concrete slab. Adhere elastomeric sheet a minimum of 100 mm
4 inches onto horizontal deck.
3.1.1.3
Walls and Vertical Surfaces
Flash wall intersections which are not of monolithic pour or constructed
with reinforced concrete joints with an elastomeric sheet adhered to both
vertical wall surfaces and concrete slab. Flash intersections which are
monolithically poured or constructed with reinforced concrete joints with
either an elastomeric sheet or a vertical grade of fluid-applied
waterproofing adhered to vertical wall surfaces and concrete slab. Leave
sheet unadhered for a distance of 25 mm one inch from the corner on both
vertical and horizontal surfaces.
3.1.2
Cracks and Joints
Prepare visible cracks and joints in substrate to receive fluid-applied
waterproofing membrane by placing a bond breaker and an elastomeric slip
sheet between membrane and substrate. Cracks that show movement shall
receive a 50 mm 2 inch bond breaker followed by an elastomeric sheet
adhered to the deck. Nonmoving cracks shall be double coated with
fluid-applied waterproofing.
SECTION 07141
Page 9
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