:: Surfacing

DRYTEKT 920

DRYTEKT 920 is a high quality self-leveling, cement-based product specially formulated for use as an interior wear surface. Available in either grey or white formulation.

Concrete	Wood	Ceramic Tile	Vinyl
Radiant Heating	For use as underlayment	Wear surface	Fast drying
Pumpable Pourable	Hand applied	Indoor	Outdoor

PERFORMANCE CHARACTERISTICS

• Pour depths of 1/8"-2"
• Walkable in 1-2 hours, finished floor goods can be applied as soon as 3 days, depending on thickness
• Self-leveling
• Excellent abuse and abrasion resistance
• Interior wear surface; retail, commercial. warehouse, industrial
• Available in either grey or white
• Water damage stable
• Coverage: approximately 30 sq. ft. per 55 lb.bag at 1/4" thickness
• Can be applied directly over wet concrete (RH 95% or less per ASTM F2170) without risk for deterioration of adhesives and subsequent bond loss of glued-down goods
• Inorganic; will not contribute to or harbor growth of mold or mildew . Will not contribute to damaging emissions or irritating fumes
• Does not require sealers or coatings for use as wear surface
• Will not develop shrinkage cracks
• Can be topically stained or integrally colored to match specific design needs

TECHNICAL INFORMATION

• Tensile Bond Strength*: >435 PSI
• Flexural Strength: 1160 PSI
• Compressive Strength (28 days): 5243 PSI
• Shrinkage: 0.03-0.05%
• pH (wet-state): 11
• Working Time: 15-20 minutes
• Dry Density: 106 lb / ft³
• Ideal slump range: 10-11 inches
• Emissions (ammonia development): 0.7 mg/m³
• Installed weight per ft2@1/4" thickness: 2.21 lbs
  
  *To concrete substrates

PREPARATION OF SUBSTRATE
Substrate shall be free from dust, oil or any contaminants which may contribute to decreased bond. Weak surfaces must be mechanically cleaned to sound and solid substrates by shot-blasting, scarifying or similar. Remove any loose particles such as adhesive residues and then vacuum. Surface tensile bond strength of substrate should be minimum 217 PSI (1.5 MPa). Surface should be primed with DRYTEKT Primer. Substrate temperature should be a minimum 43°F (+6°C) during application and air temperature maintained between 50-77°F (10-25°C). Adequate ventilation should be provided to ensure uniform drying. Moisture level of substrate should be RH 95% or less prior to application of DRYTEKT 920. Contraction joints, construction joints and cracks in the substrate which may be subject to movement after installation of DRYTEKT 920 must be maintained as joints in the new surface.

MIXING
DRYTEKT 920 should be mixed with 4.5 to 5 quarts (4-4.5 L) of water per 55 lb.bag. Do not over-water. For manual application, add product to water and mix for 2-3 minutes with a heavy duty drill (650 rpm) to obtain a lump-free mix. DRYTEKT 920 can also be used in most pump equipment, please consult with Drytek representative to verify equipment compatibility. A slump test should always be performed to ensure that mix is homogenized and free from separation.

APPLICATION
Pour blended material onto substrate at a thickness of 1/8"-2" (3-50 mm) for all surfaces. Perform slump test and adjust water accordingly until ideal patty size of 10-11 inches is obtained. DRYTEKT 920 has a liquid merger time of 3-5 minutes at 68°F (20°C). Immediately smooth the poured slurry with a notched trowel or smoother. After intitial set of material (approx. 20-30 min.) remove all overlap marks, seams and inconsistencies by scraping with steel trowel. Light ventilation during and after application is recommended but dehumidifiers should not be used for the first two days. Curing membranes are not required.

SURFACE FINISHES
DRYTEKT 920 does not require sealers or coatings for use as wear surface. However, DRYTEKT 920 accepts direct application of most commercial toppings, including acrylic, polyurethane and epoxy-based systems. Consult toppings manufacturer for specific procedures. Please contact your DRYTEKT representative for specific advice.

TRAFFICABILITY
Allow 1-2 hours for foot traffic, 24 hours for light traffic and can bear full load (ie. fork truck etc) after 7 days.

LIMITATIONS
Not for installation over wood or vinyl substrates. Apply only over ceramic or quarry tile which is applied to a concrete substrate. For indoor applications only. Not for applications exposed to continious water of intrusion. Must allow for eventual drying of substrate.

PACKAGING & STORAGE
DRYTEKT 920 is available in 55 lb. vinyl-lined paper bags. Product should be stored in dry conditions and in original packaging. Use within 6 months of date of manufacture.

Information contained within this brochure is not legally binding. Information contained herein is in good faith but Drytek Flooring Solutions Inc (DRYTEK) will not be held liable for information which has been misunderstood or used incorrectly. DRYTEK will not be held liable for improperly applied or used products, nor the specific use or pertinency of a product to a particular project. Information contained herein or otherwise administered by DRYTEK or its affiliates is based on the current and present knowledge of the products when used under normal circumstances and according to DRYTEK recommendations.

WARNING: Dust may cause skin, eye, nose, throat, or respiratory irritation. Avoid dust inhalation and exposure to dust. If dusty, wear a NIOSH/MSHA-approved dust respirator. Use proper ventilation to reduce dust exposure. Portland cement is strongly alkaline and can be corrosive to eyes, skin and respiratory tract. Wear eye and skin protection. If eye contact occurs, immediately flush thoroughly with water for 15 minutes and get medical attention. Do not ingest. If ingested and any discomfort occurs, call physician.