Technical Specifications

TECHNICAL DATA ROC-77
PENETRATING CONCRETE SEALER
Form: GDH-1185
Rev.: 083016
1
.DESCRIPTION AND USES .
Rust-Oleum
®
Penetrating Concrete Sealer seals and
protects bare concrete and masonry surfaces (including
landscaping blocks and concrete pavers) from the
damaging effects of water, chemicals and UV light without
changing the appearance of the concrete. This water-base
formula penetrates deeply into and reacts with the
concrete to form a protective barrier beneath the surface
to keep water out, protect against stains and extend the
life of the concrete surface.
It is suitable for use on interior or exterior, bare concrete
and masonry surfaces. Do not use on asphalt. It is ideal
for driveways, walkways, porches, pool decks, basements
and more.
This product is not for use on previously painted or stained
floors or over loose or poorly cured concrete. Areas
subject to hydrostatic pressure are best coated with a
waterproofing paint. Not recommended for use on garage
floors where a film forming sealer is present.
.PRODUCTS .
SKU Container Size
310429 1-Gallon Penetrating Concrete Sealer
. PRODUCT FEATURES .

Penetrates concrete for chemical & stain protection

Excellent water repellency

Maintains original appearance
PRODUCT APPLICATION .
READ ALL INSTRUCTIONS CAREFULLY BEFORE
STARTING PROJECT
SURFACE PREPARATION
Proper surface preparation is critical to achieve best
results. Allow newly poured concrete to cure for a
minimum of 28 days. Sweep away all loose dirt, debris
and remove any vegetation that could interfere with
application and performance. If necessary, use a wire
brush or sander to remove any loose or unsound concrete
or masonry. Remove any efflorescence with an
efflorescence remover (sold separately). Clean the entire
surface, including any oil or grease spots with Rust-Oleum
Cleaner & Degreaser (sold separately). Scrub the surface
with a stiff bristle brush or broom. Rinse thoroughly with
fresh water, preferably with a power washer. Repeat as
necessary to completely clean and rinse. Allow to dry to
the touch (typically 4-6 hours) before applying product.
.PRODUCT APPLICATION (cont.) .
APPLICATION
Rust-Oleum Penetrating Concrete Sealer is ready to use.
Do not thin. Use only when air (ambient) temperature is
between 50-90°F (10-32°C) and the relative humidity is
below 85% during the day and night. Do not apply in
direct sunlight. Do not apply if rain is expected within 24
hours. Use in a well ventilated area. Avoid applying late in
the day when temperatures are falling as the formation of
dew can interfere with proper sealing.
Mask adjacent surfaces to allow spray application up to all
edges. Protect delicate foliage from overspray. Apply
using a standard pump sprayer with an adjustable spray
tip or apply using a standard ⅜” nap roller. Choose the
best applicator for the size of the project and texture of the
concrete. Do not pour the sealer directly on the surface or
allow to puddle.
Stir the container to mix product. Fill pump sprayer with
product, then fully pressurize the sprayer. Set the spray tip
to a medium-fine mist and spray 10-12” from the surface.
Start and stop the sprayer just off the work area to prevent
drips. For larger areas, work in 6’x6’ sections at a time
before moving to the next section. Apply the product
evenly, using a circular or oval pattern to saturate the
surface. Do not allow the sealer to puddle. Back roll any
puddles using a ⅜” nap roller.
Once sealed, it is no longer a paintable surface. For
ongoing maintenance, surfaces previously sealed with
Rust-Oleum Penetrating Concrete Sealer (or another
water-based penetrating concrete sealer) may be sealed
again with this product.
COVERAGE
Each gallon covers approximately 250 square feet (single
coat). Coverage will vary depending on the porosity of the
surface. Porous surfaces may require multiple coats.
DRY TIME
Dry time is based on 70°F and 50% relative humidity.
Allow longer dry time at lower temperatures and higher
humidity. Wait a minimum of 4-6 hours for light foot traffic.
Wait 24-48 hours before returning heavy items, furniture
and vehicles. The surface will be fully cured in 72 hours.
CLEAN-UP
Soap and water. Properly dispose of all soiled rags, roller
covers and unused product.