One Coat

One Coat combines the scratch and brown coat of conventional stucco. Fiber-reinforced, cementitious parge coating for exterior wall systems.

Where to use:

Combines scratch and brown coats of traditional stucco systems into one coat stucco base and finish.

How to apply:

Trowel or spray applied. Additional Information

Performance Characteristics

  • Waterproof barrier Passes ASTM E514.
  • Long term protection Density and thickness provide resistance to carbonation.
  • Durable Resistant to weathering action, excellent freeze/thaw stability and abrasion resistance.
  • Breathability Allows moisture to diffuse, preventing damage from moisture build-up in wall system.
  • Impact resistance Significantly more resilient than EIFS.
  • Economical Combines scratch and brown coat to one application.
  • Smooth finish Ready for roller, spray and trowel applied decorative coatings such as, Conpro Stucco, Conpro Lastic and Color Coat.

Surface Preparation

Conproco Impact Wall System
  • 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 or Conpro One Coat.
  • Substrate should have open-pored and textured surface.
  • Apply Conpro Start where a consolidant is of benefit.
  • Saturate substrate with clean water, (saturated surface dry/SSD). Wall should be wet when Conpro One Coat is applied.
  • For best results on concrete grind or abrasive blast (CSP 3). Refer to ICRI Surface Preparation Guide 03732 for information about Concrete Surface Preparation (CSP).
Conproco Impact RM Wall System
  • Substrates must be structurally sound, sheathing must be firmly fastened and comply with all applicable building codes.
  • Place building wrap or air barrier depending upon type of substrate.

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 10 quarts of potable water into a clean mixing vessel and add 110 lbs. of plaster sand (30 – 70 mesh) to each 50 lb. bag of Conpro One Coat.
  • Mix continuously for 3 minutes to a uniform, lump-free consistency.
  • Add up to 2 pints 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 air and cause damage to the glass fibers.
  • For smaller batches, the proper mix ratio is 5 ½ parts powder to 4 ¼ parts sand to 2 ½ parts water.

Application

Conproco Impact (direct applied to concrete and masonry)
  • At the time of application, surfaces should be saturated surface dry (SSD) but hold no standing water.
  • Trowel or spray apply material to a uniform minimum of between 3/8 inch and a maximum 7/8 inch.
  • Apply additional coat of 1/16 – 1/8 inch to achieve a level plane where desirable.
Conproco Impact RM (reinforced with metal lath)
  • Place trim accessories (expansion joints, corner bead, etc.) as specified.
  • Mechanically fasten self-furring diamond mesh metal lath (complying with ASTM C841 and ASTM C847) within the confines of the panels created by the trim accessories. Make sure to overlap the flanges of the trim accessories.
  • Trowel or spray apply material to a uniform minimum of 3/16 inch, to completely cover the lath.
  • Apply additional material up to 1 inch thick for added impact resistance.

Curing

  • Keep damp with a fine mist of water for 24 hours.
  • 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

  • 50 ft.²/160 lbs. @ 3/8 inch.

Product Handling

Packaging
  • 50 lbs. paper bags.
Shelf Life
  • 12 months when properly stored.
Storage
  • 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 8 hours.
  • Do not add more water than specified.
  • Avoid overworking material during placement.
  • Expansion joints are required. Refer to Exterior Wall System specifications.

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
  • Curing
  • Pump & Spray
  • FAQs
  • Safety Data Sheet
  • RM Accessories
  • Impact Data Bulletins

 

Physical state and appearance

 

Gray powder

 

Base

 

Portland cement

 

pH

Wet mix

>12

 

Water/cement ratio

Wet mix

0.58

 

Dry bulk density

ASTM C188

66 lbs./ft.³

 

 

 

7 Days          14 Days

28 Days

Compressive strength – psi

ASTM C109

1600              1900

2250

Tensile strength - psi

ASTM C307

280                350

420

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.

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
40°
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
40°
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

One Coat is used with metal lath when the application is greater than 1/4".  One Coat can be troweled or machine applied. Most carousel and rotor stator pumps are capable of spraying One Coat.

Maintaining existing concrete block, brick, stucco and concrete surfaces that are structurally sound but can be expensive to repair or repoint. A value engineered solution is to apply a monolithic stucco coating to protect from further degradation and improve physical appearance.

Projects Showcase

Bush Memorial Center

Project History

Bush Memorial Center is one of the finest examples of Greek Revival Architecture in the Country. It serves as an elegant, formal approach to the northern end of the historic Sage College Campus. It was originally designed by James Dakin in 1836 as the First Presbyterian Church. The firm, Architectural+, was selected to design the complete interior and exterior renovation. The existing stucco system had extensive cracking and was delaminating. Investigation of the structure determined that the entire stucco system which was applied directly to the multi-wythe brick walls, required replacement. Exterior restoration included replacing the deteriorated stucco system with a polymer-modified fiber reinforced base coat and a traditional cementitious stucco finish. The base coat varied from 1/2 – 1-1/2 inches in thickness. The contractor recreated the original profiles with the use of templates and imagination. The project received an Excellence in Historic Preservation Award from the Preservation League of New York State.

 

Danville State Hospital

Project History

Danville State Hospital was constructed in 1869. Dr. Thomas S. Kirkbride developed a building design for asylums which optimized light, ventilation, and each patient’s view. Danville’s main building consists of a central structure of exposed serpentine stone, with two primary wings constructed of stucco covered schist, all with brownstone accents. C & D Waterproofing stripped all areas of deteriorated and delaminated stucco back to the original substrate. Conpro One Coat was applied directly to the substrate, without the need for expanded wire mesh. Conpro One Coat may be applied in thicker lifts than traditional stucco, making it the ideal material to replace the original scratch and brown coats. A finish coat of Conpro Stucco was applied to provide a uniform finish. The stucco restoration was completed with two coats of an acrylic elastomeric paint. The brownstone accents were repaired with MIMIC, which was slightly overbuilt and then shaved to achieve the same surface texture as the original stone.

 

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