A ready-to-use liquid admixture spacifically formulated for shotcrete. It prevents water migration and provides reliable protection across all applications in the construction field.
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Coverage Estimates
Technical Consultation Recommended
Coverage rates for this product depend on mix design, substrate conditions, and application method. For accurate quantities, we recommend speaking with our sales team before ordering. Contact us at sales@moxieinternational.com or (916) 259-7990.
Moxie Shield 1850 Shotcrete Waterproofing Admixture is suitable for wet shotcrete applications. The Moxie Shield 1850 Admixture produces a complex chemical reaction by converting the by-products of cement hydration into a higher density cementitious material creating an impermeable material. The unique chemistry of Moxie Shield 1850 forms an integral colloidal gel membrane prior to initial set.
The colloidal gels in the membrane eliminate the formation of capillary pathways and restrict the rapid evaporation of surface water. Furthermore, the gels permanently convert into solid cement internal to the material. Moxie Shield 1850 Admixture increases freeze-thaw durability and becomes an integral curing compound.
Vapour Proofing
Moxie Shield 1850 Shotcrete Waterproofing Admixture creates a vapor proof substrate. Moxie enhanced shotcrete meets and exceeds the permeability value requirement of ASTM E1745 for plastic water vapor retarders.
Water Proofing
CRD-C 48 Water Permeability of Shotcrete made with Moxie Shield 1850 creates a material that is impermeable to water. When tested according to CRD-C 48 Standard Test Method for Water Permeability of Concrete, there was no water transmission detectable through the sample, even when a full pressure of 200 psi was applied to the surface of the sample.
Moxie Shield 1850 Shotcrete Waterproofing Admixture is available in 1 gal (3.8 L), 5 gal (18.9 L) pails, 55 gal (208 L) drums and 275 gal (1041 L) totes.
Moxie Shield 1850 Shotcrete Waterproofing Admixture is suitable for wet shotcrete applications. The Moxie Shield 1850 Admixture produces a complex chemical reaction by converting the by-products of cement hydration into a higher density cementitious material creating an impermeable material. The unique chemistry of Moxie Shield 1850 forms an integral colloidal gel membrane prior to initial set.
The colloidal gels in the membrane eliminate the formation of capillary pathways and restrict the rapid evaporation of surface water. Furthermore, the gels permanently convert into solid cement internal to the material. Moxie Shield 1850 Admixture increases freeze-thaw durability and becomes an integral curing compound.
Vapour Proofing
Moxie Shield 1850 Shotcrete Waterproofing Admixture creates a vapor proof substrate. Moxie enhanced shotcrete meets and exceeds the permeability value requirement of ASTM E1745 for plastic water vapor retarders.
Water Proofing
CRD-C 48 Water Permeability of Shotcrete made with Moxie Shield 1850 creates a material that is impermeable to water. When tested according to CRD-C 48 Standard Test Method for Water Permeability of Concrete, there was no water transmission detectable through the sample, even when a full pressure of 200 psi was applied to the surface of the sample.
Moxie Shield 1850 Shotcrete Waterproofing Admixture is available in 1 gal (3.8 L), 5 gal (18.9 L) pails, 55 gal (208 L) drums and 275 gal (1041 L) totes.
16 to 24 oz per cwt (1040 to 1565 ml/100 kg) of cementitious materials. Include any other cementitious materials, such as fly ash, in the calculation.
If the ambient temperature is below 50°F an accelerator may be needed. DO NOT USE CHLORIDE ACCELERATORS. In high ambient temperatures, or if a delayed set time is desired, a set retarder may be used. If additional protection from surface moisture evaporation is needed, fog misting, or an evaporation retardant/finishing aid may be applied according to manufacturer instructions.
Prior to use, we would recommend consulting the product label, product technical data sheet, and SDS sheet. For your benefit, this information is included below.
Moxie Shield 1200 is formulated for all types of stucco and plaster surfaces — traditional three-coat and one-coat stucco systems, EIFS base coats, ornamental stucco, and cementitious plaster. It is suitable for both interior and exterior applications, above grade, and performs across the full range of stucco finish textures from open, porous finishes to dense fine-grained masonry products. Treatment penetration depth ranges from up to 3/4 inch for porous stucco and mortar down to 1/4 inch for dense, fine-pored substrates.
No. Moxie Shield 1200 is a penetrating treatment, not a surface coating or film. It does not change the color, sheen, or texture of the stucco finish. The treated surface is visually identical to the untreated surface. This is a critical performance point for historically sensitive work, decorative finishes, and architecturally exposed facades where finish specification is non-negotiable.
Yes — and it is particularly well-suited for it. Historical stucco and plaster assemblies are often irreplaceable, and their long-term survival depends on moisture management without surface alteration. Moxie Shield 1200’s penetrating chemistry preserves original material appearance, is non-toxic and non-hazardous, and provides breathable protection that allows trapped moisture to exit the substrate. It has been successfully used in historical restoration applications across civic, religious, and institutional building types.
Moxie Shield 1200 is specifically rated for wind-driven rain conditions. The treated substrate creates a water-repellent zone up to 3/4 inch deep that resists lateral moisture penetration under pressure — the primary failure mode in exposed coastal and high-rise applications. This depth of protection significantly outperforms surface-only treatments that rely on intact film continuity and are vulnerable to cracking, peeling, and joint failure under dynamic wind loads.
Yes. Moxie Shield 1200 is specifically listed for coastal area use and has a recommended application profile for marine-adjacent and high-humidity environments. It reduces internal chloride penetration, resists biological surface growth (mildew, fungus, lichen, moss), and maintains surface integrity under sustained moisture exposure. For new construction in these environments, Moxie also recommends considering Moxie Shield 1800 Admixture added to the stucco mix at the batch stage for integral protection from the ground up.
Moxie Shield 1200 is a water-based inorganic sealer. When applied to stucco or plaster, it penetrates the pore structure and undergoes a chemical reaction with moisture and the cementitious substrate to convert from liquid to a hard silicone resin within 24 hours. This resin bonds within the pore walls rather than on the surface, creating a hydrophobic internal zone that repels liquid water while leaving vapour transmission pathways intact. The chemistry is inorganic and zero VOC — no alcohol or petroleum solvents are involved, which distinguishes its performance profile from conventional silane/siloxane sealers.
Moxie Shield 1200 achieves a water-repellent zone up to 3/4 inch deep in porous stucco and mortar, ranging to 1/4 inch in dense, fine-pored substrates. Internal test data shows superior performance over silane/siloxane sealers formulated with alcohol or petroleum solvents. This depth of penetration is a significant durability advantage — surface wear, UV degradation, and carbonation fronts must travel further before reaching the protected zone, extending effective service life.
Moxie Shield 1200 is tested and compliant with ASTM C666 (freeze-thaw resistance) and ASTM D3960 (VOC content). It meets EPA USDA VOC = 0 and is USDA approved for use in food processing areas — a regulatory benchmark that reflects the non-toxic, non-hazardous chemistry of the formulation. It also complies with OSHA 29 CFR 1910.
By eliminating the liquid water transport pathway within the stucco substrate, Moxie Shield 1200 removes the primary mechanism for all three. Efflorescence requires migrating water to carry soluble salts to the surface — treated substrates dramatically reduce this migration. Alkali attack depends on moisture activation of reactive compounds within the cementitious matrix — reduced moisture ingress limits this reaction. Internal chloride reduction is documented and is particularly significant for stucco over steel-framed or reinforced substrates in coastal and de-icing salt environments.
Moxie Shield 1200 is ASTM C666 tested for freeze-thaw resistance. By significantly reducing liquid water absorption within the stucco, it limits the volume of water available to freeze within the pore structure — the primary cause of flaking, scaling, and spalling in freeze-thaw cycling environments. The treated substrate also benefits from the silicone resin’s resistance to thermal cycling, maintaining its hydrophobic properties across repeated freeze-thaw events.
Apply using an airless or low-pressure (MESTO type) sprayer for best results. A brush or roller may also be used. Critically: do not use compressed air for application — the product will foam. Saturate the surface thoroughly, allowing a rundown of 12 inches during application to confirm adequate coverage. For large areas, work in 5-foot segments to maintain wet-on-wet timing between coats. Coverage rate is 50 to 100 sq ft per gallon for two coats, depending on substrate porosity.
This is the single most important application detail. The second coat must be applied while the first coat is still damp. Do not allow the first coat to dry before applying the second — if it does, the surface will likely white over, similar to a whitewashed finish. This is not a cosmetic preference; the wet-on-wet method ensures the second coat penetrates into the substrate alongside the first rather than being blocked by a partially cured surface layer. Work in manageable sections — no more than 50 sq ft at a time — to maintain proper timing.
All construction faults and cracks must be repaired before treatment. The surface must be thoroughly cleaned and power washed — do not use detergents. Allow a minimum of 48 to 72 hours of drying time after cleaning or rainfall before application. The substrate must be clean and dry at the time of application. Do not apply to damp or moist surfaces, in rain, in direct sunlight, in windy conditions, or when ambient temperatures are below 50 degrees F / 10 degrees C.
Yes — this is critical for job site management. Due to the high pH of the formulation, Moxie Shield 1200 must not come in contact with glass, porcelain, ceramic tile, aluminum, zinc, or galvanized steel. Contact with these materials will permanently etch or erode the surface. Any accidental contact must be rinsed with running water or removed with a damp cloth immediately. The product must also not contact plant life or leather. Mask and protect adjacent materials before application.
Store in clean steel or plastic containers, sealed, above 40 degrees F / 4.5 degrees C. Do not allow the product to freeze — this is critical; freezing will compromise the formulation. Keep separate from acids, reactive metals, and ammonium salts. The product has indefinite shelf life when stored correctly. Avoid contact with eyes, skin, and clothing during application; wear masks and gloves. The formulation is non-toxic, non-flammable, and not regulated as hazardous for transportation under DOT.
The two products address different points in the construction sequence. For new construction, Moxie recommends Moxie Shield 1800 Admixture added directly to the stucco mix at the batch stage — providing integral protection throughout the full thickness of the applied stucco from day one. Moxie Shield 1200 is the post-application solution: a penetrating sealer for existing stucco surfaces, remediation of unprotected new construction, or any situation where integral treatment at the mix stage was not used. The two products are complementary and can be used together for maximum protection on critical applications.
The documented application range is broad: single and multi-family residential, coastal properties, fire and police stations, hospitals and healthcare facilities, hospitality and hotels, K-12 education and universities, high-rise and office towers, municipal buildings, retail centers, warehouse and industrial facilities, and historical building restoration. This breadth reflects the universal need for stucco moisture protection across climate zones and building types.
Yes. Because it is a penetrating treatment that does not alter surface appearance or create a surface film, Moxie Shield 1200 does not interfere with subsequent coating or finish programs. It can be applied as a standalone treatment or as a preparatory step that extends the performance life of topical coatings by reducing the moisture cycling that causes paint and coating failures in stucco substrates.
Moxie Shield 1200 is available in 1-gallon pails, 5-gallon pails, 55-gallon drums, and 275-gallon totes — covering project needs from small residential jobs to large commercial contracts. Contact the Moxie sales team at (844) 845-1975 or sales@moxieinternational.com to discuss volume pricing and logistics.
Stucco is inherently porous. Unsealed, it absorbs rainwater, wind-driven moisture, and atmospheric contaminants that progressively damage the material and the wall assembly behind it. The visible consequences — efflorescence streaking, surface staining, biological growth, freeze-thaw spalling, and paint or coating failure — are early warnings of deeper moisture damage that is expensive to remediate. Left untreated, stucco moisture infiltration can reach the substrate, framing, and insulation, creating mold, corrosion, and structural repair costs that dwarf the cost of preventive treatment.
It creates a penetrating water-repellent barrier up to 3/4 inch deep within the stucco that resists liquid water absorption — including wind-driven rain — while allowing the wall to breathe. This limits efflorescence and alkali attack, surface staining from rust, clay, and waterborne contaminants, mildew and fungus growth, lichen and moss accumulation, freeze-thaw flaking and spalling, and the general weathering that degrades stucco appearance and integrity over time. It maintains the original color and cleanliness of the stucco surface, reducing maintenance and cleaning costs.
Moxie Shield 1200 is designed specifically for existing stucco surfaces. For owners of older buildings — whether residential, commercial, or institutional — it is the primary remediation and protection tool. For new construction where integral protection at the mix stage was not specified, it also provides effective post-application protection. It is suitable for interior and exterior applications, decorative finishes, and historical restoration work where the original surface appearance must be preserved.
No. Moxie Shield 1200 is completely invisible after application. The stucco looks exactly as it did before treatment — same color, same texture, same finish. The functional change is that water beads and runs off the surface rather than being absorbed. Over time, the building maintains its original appearance significantly longer than untreated stucco, with fewer stains, less biological growth, and reduced weathering.
Moxie Shield 1200 is guaranteed to perform and be manufactured per the specifications contained in Moxie Engineering documentation. With over 40 years of proven field performance on building and construction materials, that guarantee is backed by a track record, not just a warranty clause. Contact the sales team at (844) 845-1975 or sales@moxieinternational.com to discuss project-specific warranty terms.
Moxie Shield 1200 is specified under Division 09 — Finishes, within sections covering stucco and plaster systems, or under Division 07 — Thermal and Moisture Protection, within sections covering water repellents and penetrating sealers. For restoration projects, it may also appear under Division 04 — Masonry. Moxie’s technical team can provide application-specific CSI specification language for your project type and division structure.
Moxie Shield 1200 has documented compliance with ASTM C666 (freeze-thaw resistance) and ASTM D3960 (VOC content). It meets EPA USDA VOC = 0, is USDA approved for use in food processing areas, and complies with OSHA 29 CFR 1910. All documentation is available upon request.
Specify: penetrating water repellent chemistry forming a silicone resin bond within the substrate (not a surface film), minimum penetration depth of 1/2 inch in standard stucco substrates, zero VOC formulation per ASTM D3960, breathable (vapour-open) treatment preserving moisture vapour transmission, ASTM C666 freeze-thaw compliance, and no visible alteration of surface color or texture. Film-forming acrylic and elastomeric sealers — the most common substitution attempts — create surface films that crack, peel, and trap moisture, and cannot meet these criteria. Moxie Shield 1200 meets all of them.
The combination of zero VOC inorganic chemistry, documented penetration depth, ASTM C666 freeze-thaw compliance, and breathable (non-film-forming) performance is a set of concurrent requirements that acrylic, elastomeric, and solvent-based silane/siloxane sealers cannot collectively meet. Surface coatings fail on the breathability and penetration depth criteria. Solvent-based sealers fail on VOC and inorganic chemistry. Moxie Shield 1200 is among a narrow class of products that satisfy all criteria simultaneously, and the only one with 40 years of documented field performance in stucco applications.
Yes. Moxie Shield 1200 qualifies for LEED credits through its zero VOC formulation (EPA 24 VOC = 0), non-toxic and non-hazardous chemistry, and its contribution to building durability and extended lifecycle — all relevant to Materials and Resources and Indoor Environmental Quality credit categories. LEED documentation is available to support your submittal package.
Yes. Moxie Shield 1200 has over 40 years of documented field use across residential, commercial, institutional, hospitality, healthcare, municipal, and historical restoration project types. References from architects, specifiers, and contractors are available upon request. Contact Moxie’s sales team at (844) 845-1975 or sales@moxieinternational.com.
Product Data Sheet — Full technical specifications
Safety Data Sheet (SDS) — Handling, pH, and compatibility warnings
ASTM C666 Compliance — Freeze-thaw resistance testing
ASTM D3960 / VOC Documentation — EPA VOC = 0 certification
USDA Food Processing Approval — Non-toxic, non-hazardous certification
LEED Documentation — Credit qualification and calculation sheet
Application Procedures Sheet — Two-coat wet-on-wet method guide
Coverage Rate Guide — By substrate type and porosity
Surface Compatibility Warning Sheet — Materials to protect during application
CSI Specification Language — Div. 07 and Div. 09 formats
Project References — Architects, specifiers, contractors, restoration specialists
Work directly with Moxie specialists to evaluate your project or receive guidance on specification, product selection, and application to ensure long-term performance.
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