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QC Release Powder
Product Information Bulletin 4.202
QC Release Powder and Release Powder II
The original QC RELEASE POWDER is specifically designed for use
with colour hardened textured concrete. This product allows for the
clean release of texturing tools from the concrete surface, and
at the same time, creates highlighting colour (also called an antiquing
effect) with mat-type texturing tools. QC RELEASE POWDER II can
be used with all textured concrete.
Uses and Benefits
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Both QC RELEASE POWDERS—dry-mix formulated powders and colour
pigments—are designed for the clean release of mat-type texturing
tools. When applied appropriately, QC RELEASE POWDER allows
for a clean mat release, with minimum to no effect in pattern
transfer.
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This product adds colour-embedded variation to the textured
surface, providing highlighting and antiquing effects that closely
resemble natural material.
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QC RELEASE POWDER is available in 25 standard colours. See
QC COLOUR HARDENER and RELEASE POWDER Chart. Custom colours
are also available, with no minimum orders required.
Application
1. The surface is ready for release once concrete reaches the
point when no bleed water remains on the surface and when concrete
is sufficiently firm to withstand texturing tools and the weight
of a work crew. QC RELEASE POWDER should be evenly hand-broadcast
over the entire surface of freshly placed concrete. An alternative
application method is to spread QC RELEASE POWDER with a long-handled
scrub brush in order to achieve light, uniform coverage.
2. QC RELEASE POWDER should remain in a dry state on the concrete
surface—the product should not be worked into the surface. Care
should be taken not to trowel the powder into the wet concrete.
Troweling powdered release into the surface will result in permanent
discolouration.
3. QC RELEASE POWDER may be removed as soon as the concrete has
hardened to the point where it will not scratch or mar easily (normally
2-3 days). Pressure-washing the surface is the typical removal method.
For hard-to-remove release or for heavy texture work with release,
a mild muriatic solution may be used (15 parts water: 1 part muriatic
acid).
Curing and Sealing Concrete
1. For curing concrete treated with QC RELEASE POWDER, new, non-wrinkled,
non-staining, reinforced, kraft-curing paper should be used.
2. After release has been washed from the surface and once concrete
has dried to a uniform colour, sealing the concrete may take place.
For sealing concrete, choose from a variety of QC sealers appropriate
to project’s needs: QC CEMSEAL, QC SOLVENT-BASED SEALERS, QC CEMGUARD
or QC SURPRO WB or SB. (See separate Product Information Bulletins
for complete instructions on these products.)
Maintenance
It is highly recommended to develop and follow a routine maintenance
schedule for all coloured concrete so that it maintains a top-quality
appearance. Coloured concrete installations should be routinely
inspected, cleaned and resealed as local conditions demand. Cleaning
and resealing schedules will depend on a number of factors including,
but not limited to, volume and intensity of traffic, maintenance
procedures and weather.
Limitations
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Inconsistencies in job site conditions, finishing practices,
timing of imprinting, and curing methods may produce variations
in the colour of the finished product.
- QC RELEASE POWDER may be used on vertical faces of step risers
and curbs.
Coverage Guidelines
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Note – Actual coverage may vary depending on colour choice,
application method, concrete surface finish, wind conditions,
and other local conditions.
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All colours – 1,000-1,500 square feet per 30-pound pail.
Package Sizes
QC RELEASE POWDER comes in 30-pound pails.
Storage
QC RELEASE POWDER should be kept away from moisture.
Product Handling
For handling and use, consult the corresponding Material Safety
Data Sheet before using product.
Warranty
QC RELEASE POWDER, QC RELEASE POWDER II AND QC LIQUID RELEASE,
all proprietary products, are warranted to be of uniform quality
within manufacturing tolerances. Since control is not exercised
over use, no warranty, expressed or implied, is made as to the effects
of such use. Seller’s and manufacturer’s obligation under this warranty
shall be limited to refunding the purchase price of that portion
of the material proven to be defective. The user assumes all other
risks and liabilities resulting from use of this product. If you
have any questions, please contact QC CONSTRUCTION PRODUCTS (contact
information can be found at end of this bulletin).
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