Fast repairs to holes, cracks and nail pops in drywall and plaster walls and ceilings.
Fill, level or patch small cracks, holes and chips in concrete, masonry, plaster, wallboard and wood.
Can also be used as joint compound for finishing and repairing drywall seams.
Provides an excellent floor underlayment for patching and leveling before the installation of floor
coverings. (Not recommended for areas that collect standing water or receive continuous moisture unless
coated with a waterproofing product. DAP® FASTPATCH 30 should never be used as a wear surface.
When used in subfloors, it must be covered by an acceptable floor covering such as carpet or sheet
goods. Not for use in ceramic tile floor applications.)
Surface Preparation & Application:
Please reference chart below for detailed mixing ratios and coverages.
Wall & Ceiling Patch: Surface must be clean and free of dirt, grease, loose
particles and foreign material. Widen cracks to at least ¼” in width.
Apply in room temperature conditions. Do not apply below 50ºF.
Always add powder to cold, clean water. Thoroughly dry the enclosed mixing
scoop before measuring the powder.
In a clean container, slowly mix 3 parts of powder into 1 part of
water by volume. Mix thoroughly until smooth and free of lumps. Initial mix
should be slightly thicker than desired working consistency. If
necessary, adjust the consistency with more water.
Let soak for 30 seconds. Mix only the amount of product needed for immediate use.
Using a clean putty knife, apply DAP®FASTPATCH™30 to the area and smooth.
For nail pops, drive the nail head below the surface before patching.
When dry, lightly sand the patched area with fine grade sandpaper.
If necessary, the patch may be shaved or wet-sanded. Prime
(if desired), paint or apply wallcovering. (Always follow paint
manufacturer’s application recommendations).
Note: DAP® FASTPATCH™ 30 is repair product. Repairs to facilitate anchoring of fasteners will not
enhance the performance of the existing substrate.
Drywall Seam Repair:
In a clean container, slowly mix 2 parts of powder into 1 part of water by volume. Always add powder
to cold, clean water. Thoroughly dry the enclosed mixing scoop before m easuring the powder.
Mix thoroughly until smooth and free of lumps. Mix only the amount of product needed for immediate
use.
Using a 5” or wider taping knife, apply a thin coat of compound over the drywall seam or crack. While
wet, embed the tape into the compound. Draw the knife over the crack or joint to embed the tape. Allow
to dry. Sand if necessary.
Apply a second coat of compound over the tape with an 8” or 10” taping knife, smoothing out 2” beyond
the first coat. Smooth uneven areas with a damp sponge again after the compound has dried.
If necessary, apply a thin finish coat of compound over the joint or crack, smoothing out 2” beyond the
second coat.
Sand and finish when dry.
Floor Underlayment:
All subfloors must be level, firm, dry, smooth, clean and free of dust, dirt, wax, paint and foreign
material. Not recommended for areas that collect standing water or receive continuous moisture unless
coated with a waterproofing product. DAP® FASTPATCH™ 30 should never be used as a wear surface.
When used in subfloors, it must be covered by an acceptable floor covering such as carpet or sheet
goods. Not for use in ceramic tile floor applications.
Concrete floors must be fully cured (not less than 28 days after pouring) and be free of excessive
moisture, alkalinity and water pressure. Make standard moisture and alkalinity tests. The most reliable
measurement is the calcium chloride test. Note: It is the responsibility of the flooring installer to
determine the dryness of all concrete subfloors before the installation of floor covering begins.
In a clean container, slowly mix 3 parts of powder into 1 part of water by volume. Always add powder
to cold, clean water. Thoroughly dry the enclosed mixing scoop before measuring the powder.
Mix thoroughly until smooth and free of lumps. Initial mix should be slightly thicker than desired
working consistency. If necessary, adjust the consistency with morewater. Let soak for 30 seconds.
Mix only the amount of product needed for immediate use.
With a skim coat of DAP®FASTPATCH™30, fill all broken areas, depressions and cracks in the surface
of substrate. Make sure that the patch “wets in” properly and uniformly to ensure a good bond. Level
and smooth to a feather edge. For repairs greater than ½” in thickness, not to exceed 1”, apply two
coats, allowing the first coat to set before applying the second. Do not over trowel.
Clean Up & Storage:
Clean tools with water before material hardens. Dried material must be cut, scraped or sanded away. Be sure
container is closed and tightly sealed. Store product in a cool, dry place away from extreme heat or cold.
