O'Brill Company

Construction Specialty Suppliers

       6626 N. Milwaukee Ave.

Niles, IL 60714

773-775-1122 or 847-647-0005

FAX 847-647-7819

Since 1967

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Sealtight Meadow-Crete GPS




NO. 384



One-component, trowel applied or pneumatically applied (wet process), corrosion-inhibitor enhanced, polymer-modified, shrinkage-compensated, fiber reinforced, micro silica enhanced, cementitious repair mortar for horizontal, vertical and overhead applications.

The product is ideal for patches from " to deep horizontal, vertical and overhead repairs and resurfacing of concrete, either small or large areas, interior or exterior application. MEADOW-CRETE GPS is suitable for industrial and civil engineering applications.


bulletFiber Reinforced / Increased Tensile & Flexural Strengths
bulletPolymer Modified / Enhanced Bond
bulletMicro Silica Enhanced / Low Permeability / Protects Embedded Reinforcing Steel
bulletShrinkage Compensated / Added Dynamic Stability
bulletHighly Engineered / Low Rebound
bulletCreamy Consistency / Easily Finished
bulletExcellent Freeze-Thaw Resistance / Long Term Stability
bulletWet Spray Process / Low In-Place Cost



Set times per ASTM C 191 Compressive strength per ASTM C 109 
Initial   2-3 hrs.
Final   3-4 hrs.
@ 1day       2,500 PSI
@28 days   6,500 PSI
All physical properties are laboratory based, onsite testing may result in different values due to environmental, mixing and curing procedures.
The product is currently under evaluation by an independent laboratory for comprehensive testing.

12 months when stored on pallets in a dry, cool area

50 LB. (22.7 kg) bag yields: 0.44 cu. ft.
Yields listed above are based on 3.5 quarts (3.30 liters) of water per 50 lb. (22.7 kg) bag and will vary based on substrate profile, aggregate, variations in mix water amounts and waste/rebound. Field trials should be performed to determine yields based on job-site conditions.


bulletMEADOW-CRETE H2, Two-component, polymer modified cementitious repair mortar for horizontal applications.
bulletMEADOW-CRETE FNP, One-component, flowable, form and pour repair mortar for structural applications
bulletFUTURA-15 & 30, rapid-hardening repair mortars
bulletMEADOW-PATCH T-1 & T-2, polymer modified thin repair mortars
bulletMEADOW-PATCH 5 & 20, All-purpose, rapid-setting repair mortar
bulletMEADOW-PLUG, Super fast setting, hydraulic repair mortar
bulletMEADOW-COAT, Waterproofing, decorative, cementitious thin coating
bulletREZI-WELD EPOXIES, Full line of repair epoxies

Perform surface preparation in accordance with ICRI Technical Guidelines No. 03730. Mechanically abrade existing substrate to remove all unsound concrete, but do not use excessive force, which may cause micro fracturing. Substrate must be structurally sound and free of any contaminants that will adversely affect bond. Prepared surface must be dust-free and have a sufficient profile to ensure adequate mechanical lock. Saw cut perimeter of repair zone to a depth of " to avoid featheredging.

Completely exposed all reinforcing steel, ensuring a minimum clearance of " behind reinforcing steel. Perform reinforcing steel preparation in accordance with ICRI Technical Guidelines No. 03730.

Pre-soak repair zone prior to application of MEADOW-CRETE GPS to a saturated, surface dry (SSD) condition and free of standing water.

Prime SSD substrate with a slurry coat (2 parts MEADOW-CRETE GPS powder to 1 part water). For enhanced bonding, use SEALTIGHT ACRY-LOK instead of water. Allow slurry coat to become tacky prior to application of MEADOW-CRETE GPS.

Mix only complete bags. Using a mortar type mixer, pour 3.5 3.75 quarts (3.30-3.54 liters) per 50lb. (22.7 kg.) bag in mixer. Slowly add MEADOW-CRETE GPS. Mix for 3-5 minutes or until homogeneous and lump-free. Do not over mix.

Use low-pressure, wet spray equipment. Follow industry standard nozzle procedures for removal of rebound, spray angle, compaction behind reinforcing steel and appropriate reinforcing steel cover, etc. Cut surface face to desired configuration. Finish with a wood, steel or sponge float. Do not overwork.

Compact MEADOW-CRETE GPS into properly prepared SSD substrate prior to bulk placement. Finish surface with a wood, steel or sponge float. MEADOW-CRETE GPS may be applied up to 3" horizontally and vertically and 2" overhead, dependent on patch size and configuration. Do not overwork.

Cure in accordance with ACI 308. Cure MEADOW-CRETE GPS immediately following application using a suitable water-based curing compound such as SEALTIGHT 2250 or 1130. W.R. MEADOWS recommends the use of an evaporation retarder, such as SEALTIGHT EVAPRE when severe application conditions exist.

Do not apply MEADOW-CRETE GPS when the temperature is expected to be below 45F (7C) within 24 hours or when rain is imminent. Mix only full bags. Protect product from early loss in severe application conditions, low humidity, and high temperature and/or from winds. Do not re-temper or over work product. Do not featheredge. For industrial use only by professional contractors.

Avoid inhalation of dust. Avoid direct contact with this product. Utilize gloves and goggles to minimize direct contact. If contact occurs, wash affected areas with mild soap and water. Keep product out of reach of children. For industrial use only. Refer to Material Safety Data Sheet for complete Health and Safety Information.

This material last updated June 2001.

W. R. MEADOWS, INC. warrants that, at the time and place we make shipment, our materials will be of good quality and will conform with our published specifications in force on the date of acceptance of the order. THE FOREGOING WARRANTY SHALL BE EXCLUSIVE AND IN LIEU OF ANY OTHER WARRANTY, EXPRESS OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND ALL OTHER WARRANTIES OTHERWISE ARISING BY OPERATION OF LAW, COURSE OF DEALING, CUSTOM OF TRADE OR OTHERWISE. As the exclusive remedy for breach of this Warranty, we will replace defective materials, provided, however, that the buyer examine the materials when received and promptly notify us in writing of any defect before the materials are used or incorporated into a structure. Three (3) months after W. R. MEADOWS, INC. has shipped the materials, all our Warranty and other duties with respect to the quality of the materials delivered shall conclusively be presumed to have been satisfied, all liability therefore terminates, and no action for breach of any such duties may thereafter be commenced. W. R. MEADOWS, INC. shall in no event be liable for consequential damages. Unless otherwise agreed to in writing, no warranty is made with respect to materials not manufactured by W. R. MEADOWS, INC. We cannot warranty or in any way guarantee any particular method of use or application of the performance of materials under any particular condition. Neither this Warranty nor our liability may be extended or amended by our salesmen, distributors or representatives, or by our distributor's representatives, or by any sales information or drawings.


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Last modified: August 09, 2004