Where to use:
Fill voids and provide a uniform finish to cast concrete.How to apply:
Trowel, sponge float, or spray applied. Additional InformationMinimize InformationPerformance Characteristics
- Long term protection Density and thickness provide resistance to carbonation.
- Enhanced aesthetics Significantly improves the natural appearance of concrete, filling voids, sealing pores and adding subtle, uniform texture.
- Improves performance of supplemental coatings Fills voids and pores that coatings don’t, providing uniform, monolithic base for protective coatings, such as Conpro Lastic, Super Color Stain and Color Coat.
- Anti-carbonation system Combined with Conpro Lastic provides protection from carbonation, chlorides and other environmental pollutants.
- Economical High production, easy to apply by spray, trowel or sponge float.
Surface Preparation
- Remove loose and deteriorated material, laitance, dirt, dust, oil and any surface contaminants that will inhibit proper bond.
- Repair spalled areas, static cracks and voids with Conpro Set.
- Substrate should have open-pored and textured surface.
- For best results grind or abrasive blast (CSP 3). Refer to ICRI Surface Preparation Guide 03732 for information about Concrete Surface Preparation (CSP).
- Apply Conpro Start where a consolidant is of benefit.
- Saturate substrate with clean water, (saturated surface dry/SSD). Wall should be wet when Plastermix is applied.
Priming
- No priming is required under normal circumstances.
Mixing
- Mechanically mix using a low speed drill (400 – 600 rpm) and mixing paddle or mortar mixer.
- Pour 3-3/4 quarts of potable water into a clean mixing vessel and slowly add all of the powder.
- Add 1 quart of K-88 Admix (replacing 1 quart of water) per bag of material to increase adhesion and aid in curing, when the substrate is very dense and/or when rapid evaporation will occur due to high wind and high temperature.
- The proper mix ratio is 4½ parts powder to 1 part water to ¼ parts K-88 Admix.
- Mix continuously for 3 minutes to a uniform, lump-free consistency.
- Add up to 1 pint of additional water if needed.
- Allow to “breathe” for 1 minute and remix for 1 minute. This will improve workability and open time.
- Do not over mix, as this will entrain excess air.
Application
- At the time of application, surfaces should be saturated surface dry (SSD) but hold no standing water.
- Bagging – mix 1 part K-88 Admix with 3 parts water to a slurry consistency. Apply with a sponge float to fill voids and bug holes.
- Texture coat – apply with a trowel. Allow material to take up to thumb-print hard. Apply second application with a trowel and finish with a sponge float.
- Do not exceed 1/16 inch total thickness.
Curing
- Keep damp with a fine mist of water.
- Protect from direct sunlight, wind, rain and frost during curing period.
Clean Up
- Clean tools and equipment with water immediately after use.
- Cured material must be removed mechanically.
Coverage/Yield
- 100 ft.²/50 lbs.@1/16 inch.
Product Handling
Packaging- 50 lbs. paper bags.
- 12 months when properly stored.
- Transport and store in cool, clean, dry conditions in unopened containers.
- High temperature or high humidity will reduce shelf life.
Limitations
- Do not apply unless substrate and ambient temperature can be maintained at a minimum of 40°F for 24 hours. Refer to ACI Cold Weather Application Guidelines.
- Cold mixing water and low temperature will retard set. Hot water and high temperature will accelerate set.
- Protect application from precipitation and high wind for at least 24 hours.
- Do not add more water than specified.
- Avoid overworking material during placement.
Health and Safety
- Product is alkaline.
- Do not ingest.
- Avoid breathing dust.
- Avoid contact with skin and eyes.
- Refer to Safety Data Sheet (SDS) for additional information.
First Aid
- In case of skin contact, wash thoroughly with soap and water.
- For eye contact, flush immediately with a high volume of water for at least 15 minutes and contact a medical professional.
- For respiratory problems, remove person to fresh air.
Disposal
- Dispose of material in accordance with local, state and federal regulations.
- Technical Data
- Data Bulletin
- CSI Spec
- Competition
- Curing
- Float
- Pump & Spray
- FAQs
- Safety Data Sheet
Physical state and appearance | Fine gray powder | |
---|---|---|
Base | Portland cement | |
pH | >12 | |
Setting by vicat needle | ASTM C191 | Initial 60 minutes – Final 285 minutes |
Percent air by volumetric | ASTM C173 | 6% |
7 Days 14 Days 28 Days | ||
Compressive strength - psi | ASTM C109 | 2900 3000 3400 |
Tensile strength - psi | ASTM C307 | 400 500 600 |
FOR PROFESSIONAL USE ONLY
Conproco warrants this product for one year from the date of manufacture to be free from manufacturing defects and to meet the technical properties on the current technical data sheet if used as directed within shelf life. User determines suitability of product for use and assumes all risks. Buyer's sole remedy shall be limited to the purchase price or replacement of product, exclusive of labor or cost of labor. June 25, 2020.
NO OTHER WARRANTIES EXPRESSED OR IMPLIED SHALL APPLY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. CONPROCO CORP SHALL NOT BE LIABLE UPON ANY LEGAL THEORY FOR SPECIAL OR CONSEQUENTIAL DAMAGES.
Vertical
Conproco | Sika | BASF | Sto | Tamms | Keim |
---|---|---|---|---|---|
Sikagard 670W Sika Color | Parkcoat Super Colorcoat Sealcoat Thorocoat 200 Thorosheen Thoro 35 | Concrete Coating 232 and 230 Maxicryl 201 | Tammosheen Tammscoat | None | |
Elastocolor 550W | Thorolastic Thorogard Colorflex Flexcoat | Stolastic 211 Stolastic 212 | Tammolastic | None | |
None | None | None | None | Soldalit TDS | |
None | None | None | None | Soldalit TDS | |
None | None | None | None | Soldali-Dilution | |
Skiaguard 740W | Master Protect H107 | None | Baracade 40/100 | None | |
None | None | None | Aquastain T-96 | None |
Horizontal
Conproco | Sika | BASF | Sto | Tamms | Keim |
---|---|---|---|---|---|
None | None | Texture Coat 510 | None | None | |
None | None | None | Aquastain T-96 | None |
Cementitous Products
Product | Minimum Temperature | Minimum to 55° F | 55°F – 70° F | 70° F and above | Minimum Time to Coat |
---|---|---|---|---|---|
ISR CM | 40° | 12 Hours | 4 Hours | 2 Hours | 3 to 5 days depending on temperature |
ISR VO | 40° | 12 Hours | 4 Hours | 2 Hours | 3 to 5 days depending on temperature |
ISR AG | 40° | 12 Hours | 4 Hours | 2 Hours | 3 to 5 days depending on temperature |
Conpro Set | 40° | 12 Hours | 4 Hours | 2 Hours | 3 to 5 days depending on temperature |
Quick Shot | 40° | 8 Hours | 2 Hours | 1 Hour | 3 to 5 days depending on temperature |
Forment (remove forms) | 40° | 72 Hours | 48 Hours | 24 Hours | 3 to 5 days depending on temperature |
Gun Shot LPS | 40° | 12 Hours | 4 Hours | 2 Hours | 3 to 5 days depending on temperature |
Injection Grout (remove clay) | 40° | 24 Hours | 24 Hours | 24 Hours | 3 to 5 days depending on temperature |
One Shot 2C | 45° | 24 Hours | 12 Hours | 6 Hours | 3 to 5 days depending on temperature |
Matrix | 40° | 12 Hours | 4 Hours | 2 Hours | 3 to 5 days depending on temperature |
Matrix TR | 50° | 12 Hours | 4 Hours | 2 Hours | 3 to 5 days depending on temperature |
Repoint | 40° | 12 Hours | 4 Hours | 2 Hours | 3 to 5 days depending on temperature |
Plastermix | 40° | 12 Hours | 4 Hours | 2 Hours | 3 to 5 days depending on temperature |
Structural Skin | 40° | 12 Hours | 4 Hours | 2 Hours | 3 to 5 days depending on temperature |
Conpro One Coat | 40° | 12 Hours | 4 Hours | 2 Hours | 3 to 5 days depending on temperature |
Conpro Stucco | 40° | 12 Hours | 4 Hours | 2 Hours | 3 to 5 days depending on temperature |
Foundation Coat | 40° | 12 Hours | 4 Hours | 2 Hours | 3 to 5 days depending on temperature |
Super Seal | 40° | 12 Hours | 4 Hours | 2 Hours | 3 to 5 days depending on temperature |
Liquid Products
Product | Minimum Temperature | Minimum to 55° F | 55°F – 70° F | 70° F and above | Minimum Time to Coat |
---|---|---|---|---|---|
Conpro Start | 40° | 18 Hours | 12 Hours | 6 Hours | Refer to temperature |
ECB | 40° | 8 Hours | 1 Hour | 30 Minutes | Dry to touch |
Primer | 40° | 8 Hours | 1 Hour | 30 Minutes | Color change to orange |
Shield MX | 40° | 24 Hours | 18 Hours | 12 Hours | Dry to touch |
M3P & M3P-X | 45° | 24 Hours | 18 Hours | 12 Hours | Dry to touch |
M3P Overcoat | 45° | 24 Hours | 18 Hours | 12 Hours | Dry to touch |
Conpro Lastic | 45° | 24 Hours | 18 Hours | 12 Hours | Dry to touch |
Color Coat | 45° | 24 Hours | 18 Hours | 12 Hours | Dry to touch |
Super Color Stain | 45° | 24 Hours | 18 Hours | 12 Hours | Dry to touch |
Elastideck | 45° | 24 Hours | 18 Hours | 12 Hours | Dry to touch |
Terra Color | 45° | 24 Hours | 18 Hours | 12 Hours | Dry to touch |
Terracotta Finish | 45° | 24 Hours | 18 Hours | 12 Hours | Dry to touch |
Plastering Trowel | Finishing Trowel | Pool Trowel | Margin Trowel | Floats | |
---|---|---|---|---|---|
ISR CM | X | Red | |||
ISR VO | X | Red | |||
ISR AG | X | X | |||
Conpro Set | X | Red | |||
Quick Shot | X | Red | |||
Gun Shot LPS | X | X | X | ||
One Shot 2C | X | X | |||
Elastideck | X | X | |||
Plastermix | X | X | Green | ||
Matrix | X | Red | |||
Matrix TR | Red | ||||
Structural Skin | X | X | |||
One Coat | X | X | |||
Stucco | X | X | Green | ||
Foundation Coat | X | X |
For Cement Based Materials
The gallons per minute volume of a rotor/stator pump is determined by the pump size (i.e. size 6 has a larger capacity than size 3). The pressure capacity of a pump is determined by the number of stages. Thicker materials and longer distances require higher pressure.
Marshalltown | Hy-Flex | Quickspray | ChemGrout | Reed | |
---|---|---|---|---|---|
Forment® | – | X | X | X | X |
Gun Shot LPS | – | X | X | X | – |
Plastermix | X | X | X | X | – |
ISR AG | – | – | – | – | X |
Conpro One Shot 2C | – | X | X | X | – |
Elastideck | X | X | X | X | – |
Structural Skin® | – | X | X | X | – |
Conpro One Coat | – | X | X | X | – |
Conpro Stucco | X | X | X | X | – |
Foundation Coat | – | X | X | X | – |
Conpro Super Seal | X | X | X | X | – |
Manufacturer Contact Information
For Liquids and Coatings
The capacity of airless spray equipment is determined by the tip size. Given the proper tip size, the manufacturer of the equipment will be able to recommend specific equipment.
R.E. Chapin MFG | Titan Tool Inc. | Binks | Graco Inc. | |
---|---|---|---|---|
Conpro Start | X | X | – | – |
ECB | – | – | – | X |
Conpro Primer | X | X | – | – |
Conpro Shield MX | X | – | – | – |
M3P | – | – | X | – |
M3P-X | X | X | – | – |
Conpro Lastic | – | – | – | X |
Color Coat | – | – | X | – |
Super Color Stain | – | – | X | – |
Manufacturer Contact Information
Cast-in-place concrete typically has bug holes and voids on the surface as a result of pockets of air. Plastermix is a cementitious parge coat applied in a thin coat to fill the voids and create a uniform surface.
Mix 1 part K-88 Admix with 3 parts water to a slurry consistency. Apply with a sponge float. For a texture coat, apply with a trowel, allow to take up until thumbprint hard. Apply a second coat with a trowel and finish with a sponge float. Do not exceed 1/16".
Projects Showcase
Harbor Towers 2008

Project History
The Harbor Towers were designed by architect I.M. Pei and constructed in the 1970s. In the mid 1990s the buildings had shown effects of their location in Boston Harbor.
Over a three-year period restorations and waterproofing to the building were made using Conpro Lastic. In 2008 the Towers were in need of a touch up, the appearance of the buildings was mottled and extremely dirty. These effects were again due to the constant ocean spray from the harbor coupled with the airborne particulate from the ten-year long “Big Dig”. Working with WJE, contractor NER Construction Management, Inc. found that the best solution was to prime the existing surface using Conproco Point 5 acrylic primer and recoat with Conpro Lastic elastomeric coating.
The building was power washed, primer was applied, followed by two 15-mil coats of Conpro Lastic. Conpro Lastic is a waterproof membrane, ideal for these high-rise buildings as it bridges minor cracking and performs well with the harsh conditions of the city and the driving rains of the North Atlantic.
TWA Terminal

Project History
Eero Saarinen, an influential American architect was commissioned to design the TWA terminal in 1956. Along with the structural engineers Ammann & Whitney the “birdlike” structure was conceived as a complete environment. The architectural expression was intended to embody movement and transition. The construction of the terminal required a staff of 14 engineers and 150 craftsman. The selection of a shell-type structure offered the most dramatic architectural opportunities and made TWA stand out at the airport. For the concrete framework, steel-pipe scaffolding was erected on a grid, with each vertical accurately placed to support the underside of the form at the proper elevation and position. The terminal was closed in 2001 after TWA ceased to exist. DOCOMOMO-US, the Municipal Art Society of New York as well as the New York Landmarks Conservancy have been active in protecting the iconic structure. Today the beautifully restored terminal has reopened as a portal for Jet Blue Airways.
Restoration Design Firm
Beyer Blinder Belle
Architects and
Planners LLP.,
New York, NY
General Contractor
T. Moriarty &
Son Inc.,
Brooklyn, NY
Associated Products
-
Lastic
Product DetailsBreathable, waterproof elastomeric coating for concrete and masonry structures
-
M3P Overcoat
Product DetailsMineral silicate/acrylic coating for new and previously painted concrete and masonry structures