Lokworx 4252 Multi-Use
DESCRIPTION:
LokWorx 4252 is an installer-friendly, premium high-strength Pressure Sensitive Adhesive (PSA). It may be used on all grades of concrete, on, above, or below grade in the absence of excess moisture, as well as on suspended approved wood floors for installation of LVP/LVT and carpet tile.
APPROVED SUBSTRATES:
- For interior use only.
- Wood Association approved wood underlayment and subflooring. See Resilient/Carpet Wood Substrate Information.
- Gypsum and lightweight concrete should be primed with a primer such as Shaw 9050
- Sound and properly prepared concrete (on, above or below grade), metal, wood fiberglass and terrazzo.
- Existing resilient products should be over 1 year old, secure and fully adhered with a full spread of adhesive. Remove all waxes and polishes from the existing floor before installation.
Read and follow the product specific installation guidelines for layout, design and any special instructions for installation.
SUBSTRATE PREPARATION / testing:
- RH - 99% (ASTM F-2170), provided the site is absent of hydrostatic pressure.
- pH 5-12 (ASTM F-710)
- For above / on-grade / below grade installations, RH and pH testing are required.
For older slabs or slabs with a prior history of moisture related issues, Shaw Technical Support recommends moisture mitigation in the form of a 2-part epoxy system, such as MoistureTEK. For newer slabs with an intact moisture retarder, initial moisture levels should recede over time.
- Substrate must be structurally sound, clean, level and dry. Free of dust, dirt, oil, grease, paint, curing agents, concrete sealers, adhesives, loosely bonded toppings, loose particles and any other substance or condition that may prevent or reduce adhesion.
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NOTE: On-ground slab is built on a vapor retarder, which remains effective and intact, in conformance with ASTM E1745.
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Concrete must be a minimum of 45 days old.
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Fill depressions or cracks with a cementitious patching / leveling compound that meet or exceed Shaw Industries maximum moisture level and pH requirements. Use of gypsum-based patching and/or leveling compounds which contain Portland or high alumina cement and meet or exceed the compressive strength of 3,000 psi are acceptable.
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For cracks and saw cuts deeper than 1”, Shaw QuickFil is recommended.
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Installation site must be acclimated with HVAC in operation, or the temperature must be controlled between 65-95° F (18- 35°C) and the ambient relative humidity controlled between 30-65% before, during and permanently after the installation.
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Do not use over substrates containing asbestos,active cutback adhesive and chemically abated substrates.
APPLICATION INSTRUCTIONS AND SPREAD RATES:
|
Flooring Type
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Trowel Size
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Coverage
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LVT & LVP:
Porous Substrate for Semi Wet installation only
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1/16” x 1/16” x 1/16” SQ notch
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140 - 175 sq ft / gal
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LVT & LVP:
Non-Porous Substrate OR as Dry-to-Touch (PSA) installation
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1/16 x 1/32” x 1/32” U notch
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175 - 225 sq ft / gal
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Carpet Tile
PSA (Dry-to-touch) Installation
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1/16” x 1/32” x 5/64” U notch
3/8" 10 mm foam or medium nap roller
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20 - 25 sq yd /gal (175 - 225 sq ft /gal)
28 - 36 sq yd /gal (250 - 325 sq ft/gal)
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Semi - Wet Application (Porous Substrates Only)
Flash Time: 15-30 minutes
Working Time: 1 hour
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For semi wet installations, allow lokworx 4252 to flash off for 15-30 minutes, install LVT or LVP. There must be adhesive transfer to ensure a good bond. Install tile or plank within 1hrs.
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Dry-to-Touch (PSA) Application
Flash Time: 30-60 minutes
Working Time:
Vinyl Tile and Plank: 6 hours
Carpet Tile: 12 hours
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For Dry-to-touch (PSA) installations, allow lokworx 4252 to flash off for 30-60 minutes or dry-to-touch, Install LVT/LVP carpet tile. Please Refer to working time of product.
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Note: Coverage rate, flash time and working time may vary based on temperature, humidity, substrate porosity, jobsite conditions and application practices. Coverages are estimates only. Actual jobsite coverage may vary according to substrate conditions, type of trowel used and setting practices. Trowel dimensions are width/depth/space.
*Areas with low relative humidity will result in reduced working time.
PRODUCT CHARACTERISTICS:
Read and follow the product specific installation guidelines for layout, design and any special instructions for installation.
| Weight |
37 lbs / 4 gallon pail |
| Pallet Quantity |
48 |
| Pallet Weight |
1836 lbs |
| Polymer Type |
Acrylic |
| Percent Solids |
50-60% |
| VOC’s (Rule #1168 of California SCAQMD) |
|
| Color / Tracer |
Beige Off-White/ with Red, Yellow Tracers |
| Shelf Life |
Resealable pail up to 4 applications 2 years from manufacturing date, in an unopened container |
| Storage Conditions |
65°F to 95°F (18°C to 35°C). Protect from freezing |
| Flash point (ASTM D56) |
>212°F / 100°C |
| Cleaning Instructions |
Use warm soapy water while adhesive is still wet. For dried adhesive removal contact Shaw Technical Support at 1-800-471- 7429 |
| Traffic |
Light Traffic – 24 hours
Heavy Traffic - 72 hours |
ENVIRONMENTAL
LEED IEQ CREDIT INFORMATION (2009 AND V4)
| Credit Requirement |
Status |
Comment |
| Meets General Emissions Evaluation Criteria |
Complies |
FloorScore
SCS-FS-20169 |
| VOC’s (Rule #1168 of California SCAQMD amended October 6, 2017) |
Complies |
VOC Content < 50 g/L |
WARRANTY:
This product is covered by a
10 year limited warranty. For more detailed information on this limited warranty, please see contact information at the bottom of this page.