Page 170 - Construction Waterproofing Handbook

ABOVE-GRADE WATERPROOFING 3.59

FIGURE 3.47 Deck-coating application; note prepared deck in fore-
ground, base coat applied in middle, and finished top coat in back-
ground of parking garage. (Courtesy of Coastal Construction
Products)

upper deck or lower decks, which cover occupied areas, are sealed with deck coatings,
while intermediate decks are sealed with clear sealers. (See Table 3.22.)

CLEAR DECK SEALER APPLICATION

Clear deck sealers are penetrants, and it is critical for concrete surfaces to be prepared to
allow proper penetration and bonding. A light broom finish is best for proper penetration;
smooth, densely finished concrete should be acid-etched. Test applications of sealers are
recommended by manufacturers to check compatibility, penetration, and effectiveness for
desired results. Concrete must be completely cured, and only water-curing or dissipating,
resin-curing agents are recommended. Primers are not required with clear deck sealers.