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. [expand title=”Additional Information” swaptitle=”Minimize 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).
- 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 3.5 – 4 quarts of potable water into a clean mixing vessel 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.
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.
- 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
- 16 ft.² @ 3/8 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 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.
