Surecrete Wall Spray - White
Wall Spray is a cement-based overlay designed for both interior and exterior vertical surfaces. It offers a wide variety of finishes from a simple knock-down to a sophisticated faux Venetian Plaster.
- Interior/Exterior Use
- For Vertical Surfaces or Walls
- More Versatile and Stronger than Stucco
- VOC Rating: 0 g/L
- Coverage: Approx. 28-30 sq. ft. @ 1/4"
- Pigment-able with Surecrete Color Packs
- Faux Venetian Plaster
- “Knock (more...)
Surface PreparationThe principles for surface preparation for WallSpray are aligned with other cement-based vertical overlays, the substrate must be:
- Clean:The surface must be free of dust, dirt, oil, grease, curing agents, efflorescence, chemical contaminants, rust, algae, mildew and other foreign matter that may serve as a bond breaker or prevent proper adhesion. Best results may be achieved through the use of SCR (see TDS).
- Cured: Any concrete must be sufficiently cured to have sufficient hydration, approximately 7 - 14 days depending on temperatures and humidity.
- Sound: No system should be placed upon flaking paint or spalling concrete.
- Profiled: Proper profile should follow the standard established by the International Concrete Repair Institute (ICRI) Technical Guideline no. 03732 for Concrete Surface Profile (CSP). The established profile is categorized as CSP-1 through CSP-4.
Some painted surfaces, likewise, may require some profile for bonding: de-glossing or sanding. The most common means to properly profile a concrete surface or remove loose paint (especially exterior) is through the use a pressure washer equipped with a turbo-tip and SCR (see SCR TDS).
- Air and substrate surface temperatures shall remain between 50°F (10°C) and 90°F (32°C) during and within 48 hours of placement.
- No precipitation should occur during or within 48 hours of placement. If Wall Spray becomes wet prior to sealing, pigments will fade excessively and whiting will occur.
- Avoid high heat and / or windy conditions. Attempt to minimize application during such harsh conditions by working during cooler hours. Keep materials shaded prior to mixing, running water until cool, and setting up temporary walls for wind blocks.
- Interior applications and cool, shaded areas will take significantly longer to cure. Even in summer months, the winter mix design should be considered for these applications.
- This product (depending on weather conditions) should achieve initial set within 6 – 8 hours. Like concrete full cure is reached at 28 days.
- Sealer selection for a finished WallSpray project will require different cure times:
- SureSeal products for exterior applications requiring vapor permeability, may be applied as soon as overnight. See specific sealer TDS.
- Dura-Kote products for interior applications may require longer cure times, perhaps 24 hours or more. See specific sealer TDS
Upon surface preparation, some areas may require patching prior to application of Wall Spray. Wall Stamp is an excellent choice as a patching product to fill large voids on vertical surfaces.Mixing and Handling
- Add 3 ½ qts. (3.3 liter) water, to a 5 gal. (18.9 liter) pail.
- Add Color Pack if desired.
- Mix with a handheld concrete mixer, such as a Collomix Xo-55 Dual Shaft Mixer for a minimum of 15 seconds.
- Slowly introduce Wall Spray into the pail with mixer running.
- Scrape side of pail with a margin trowel to ensure all dry product is incorporated into the wet mix.
- Continue to mix for a minimum of 1 minute after all ingredients are combined to achieve a lump-free consistency. Additional water may be added up to a total of 4 qt. (3.8 liter) water to 1 – 40 lb. (18.1 kg) bag.
All exterior Wall Spray applications are recommended to have a base coat. Base coats are most commonly sprayed on with compressed air spray equipment, but may also be applied with hawk and trowel./p> Concrete, common substrates
- Common setting for spray gun orifice is approximately ¼” (6.3mm).
- Setting for air compressor should be approximately 8 ft³(.23m³) per minute at 40 psi (276 kPa) continuous.
- Spray 100% coverage, leaving no bare spots, a minimum of 1/8-3/16” (3—5 mm) of material.
- Depending upon desired finished texture, may or may not be troweled.
- Minimum 4.5 oz. (127 g) standard fiberglass mesh is required.
- Spray a minimum of 1/8-3/16” (3—5 mm) of material as a first pass.
- Trowel the mesh into the wet base coat.
- Spray a second pass to ensure mesh is completely encapsulated in base coat when troweled flat.
- Stencils and tape patterns may be placed after scraping and sweeping of base coat, and prior to application of finish coat.
- Stencils and tape patterns may be removed as soon as product dries sufficiently to bear the foot traffic of the applicator, prior to sealing.
- The base coat must dry sufficiently (minimum overnight). Longer dry times are required on concrete block to prevent joints from “ghosting” through the finish coat.
- Scrape the surface of base coat and remove any loose material.
- The finish coat applies as the base coat described above. Alterations of air pressure, spray gun orifice size, and trowel techniques will yield numerous pleasing finish coats.
Depending upon the application selected, Eco-Stain may provide aesthetic appeal to a project. Refer to Eco-Stain TDS.Sealing
To complete a WallSpray project sealing is required. While multi-colored, “designer finishes” may seal clear, for the simple single color projects, use a good quality wall paint.
Excellent choices for sealer include:
- A good quality wall paint
- Super 20 – clear 30% solids, 600 g/L solvent
- Super WB – clear 30% solids water based
- Super WB LL – clear low luster water based
Refer to the appropriate TDS for details.
Note: never use a solvent based sealer on WallSpray placed over a polystyrene foam substrate
Due to condition specific sites, always prepare an adequate number of test areas. Wear protection system and aesthetic suitability for products’ intended use should be included. On site sample approval is especially critical on substantial, heavy traffic situation or custom coloration.
Before WallSpray dries; spills and tools can be cleaned up with water.
Contact your local government household hazardous waste coordinator for information on disposal of unused product.Read More