 DRYTEKŪ 4000 is a value-engineered, easy-to-use, self-leveling underlayment designed for use over
various substrates including concrete and ceramic tile. It's proprietary Low Alkali Cement (LAC) based
formulation provides a protective, smooth and flat surface on which sensitive finished floor goods can be laid
directly without additional preparation.
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PERFORMANCE CHARACTERISTICS |
- Pour depths of 1/8" to 3"
- Walkable in 3-4 hours, finished floor goods can be installed as soon as 3 days (72 hours) after pour
- Water damage stable
- Suitable surface for most finished floor goods
- Low Alkali Cement (LAC) formulation can be applied directly over moist 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 upon settling or curing
- Use of DRYTEKŪ 4000 offers points toward LEED accreditation (LEED is a registered trademark of the US
Green Building Council; for more information, see www.drytek.com)
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TECHNICAL INFORMATION
| Pour Depths |
1/8”- 3” |
| Coverage |
approx. 25 ft2 / 50 lb bag at ¼” thickness |
| Tensile Bond Strength* |
250 PSI |
| Flexural Strength |
850 PSI |
| Compressive Strength (28 days) |
3500 PSI |
| Dry Density |
106 lb / ft³ |
| Installed Weight per ft²@ ¼” thickness |
2.2 lbs |
| Ideal Slump Range** |
10-11 inches |
| Emissions, VOC: |
negligible |
| Shrinkage: |
0.01 - 0.03% |
| pH (wet state): |
11 |
| Working Time: |
15-20 minutes |
| Walkable Time: |
3-4 hours. Finished floor goods can be applied as soon as 3 days
(72 hours) depending on thickness |
* To concrete substrate at 28 days
** Using DRYTEK Flow Test Kit |
ACCEPTABLE SUBSTRATES / PERFORMANCE CHARACTERISTICS
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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 vacuum. Cutback adhesive must be removed down to a thin residue by razor scraping or equivalent.
Surface bond strength of substrate should be minimum 72 PSI (0.5 MPa). Surface should be primed with DRYTEKŪ 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 content of substrate should be RH 95% or
less prior to application of DRYTEKŪ 4000. Contraction joints, construction joints, and cracks in the substrate which may be
subject to movement after installation of DRYTEKŪ 4000 must be maintained as joints in the new surface. For use over wood
substrate reinforcement (Diamond Lath, Standard steel concrete reinforcement lath or similar) must be used. Felt-backed floor
coverings must be removed prior to application of DRYTEK. |
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MIXING |
| DRYTEKŪ 4000 should be mixed with 4.0 to 4.5 quarts of water per 50 lb bag. Do not over water. For manual application, add
product to water and mix for 2-3 min. with a heavy duty drill (650 rpm) to obtain a lump free mix. DRYTEKŪ 4000 can also be used
in most pump equipment. Please consult with a DRTYEK representative to verify equipment compatibility. A slump test should
always be performed to ensure that mix is homogenized and free from separation. |
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APPLICATION |
| Pour blended material onto substrate at a thickness of 1/8" to 3" (3-76mm). Perform Drytek Flow Kit test and adjust water
accordingly until ideal patty size of 10-11 inches is obtained. Immediately smooth the poured slurry with a smoother. After initial
set of material, remove all overlap marks, seams, and inconsistencies by scraping with steel trowel. Material can be walked on
after 3-4 hours. |
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FLOORING INSTALLATION |
| Finished floor goods can be applied to surface 72 hours after application, depending on thickness, drying conditions and type of
finished floor. Due to the relatively low pH level of DRYTEK floor leveling products, finished floor goods can be applied rapidly
without risk of adhesive bond failure. As a general rule, permeable materials such as carpeting may be adhesively or
mechanically applied to DRYTEK underlayments when RH level of substrate (i.e. concrete slab, etc) is 95% or below. RH levels
should be determined according to ASTM standard F2170. Always test performance suitability and compatibility of finished floor
systems prior to their application. Sample surfaces should be installed as a field test so as to be representative of entire surface
and tested for intended use. Always refer to finished floor manufacturers recommendations regarding installation instructions,
restrictions and compatibility. |
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LIMITATIONS |
| Apply only over ceramic or quarry tile which is applied to a concrete substrate and well-bonded. Indoor applications only. Not for
applications exposed to continuous water of intrusion. Must allow for eventual drying of substrates. |
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PACKAGING |
| DRYTEKŪ 4000 is available in 50 lb polyethylene-lined paper bags and in 2200 lb Bulk Sacks. |
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STORAGE |
| Product should be stored in dry conditions and in original packaging. Use within 6 months of date of manufacture. |
WARNING: Dust my 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. |
