Cementitious Pin Hole Filler

CEM 241 is a two component, fast setting modified cementitious pinhole filler for existing concrete columns and masonry structures.


Technical Data Sheet


CEM 241 is a self adhesive mixture designed for durable pinhole filling with a strong adhesion to surfaces in civil engineering applications. It is used for vertical, horizontal, and overhead application.


  • Facades, columns and beams.
  • Tunnels and water tanks.
  • Rough concrete surfaces.


For filling of blow holes, cavities and re-aligning of walls prior to tiling and renovating existing commercial and residential structures. Excellent for re-profiling swimming pools, concrete tanks and filling the degradation resulting from chemical attacks of water additives.


CEM 241 prevents damages from mechanical impact and abrasion, environmental and freeze-thaw deterioration and chemical destruction from acids, caustic solutions and other chemical contamination.


  • Suitable for interior and exterior applications.
  • Self-adhering repair pinhole filler, which permits for vertical, horizontal and overhead applications.
  • Excellent workability.



CEM250 44  Lb (20.0 Kg) Bag
EB550 SBR 1.3 Gal (4.92 Liter) Jug


Properties at 25°C


Value *


Mixed Density, Lb/Gal (kg/Liter) 15.5 (1.85)

Compression Strength, N/mm2, (7 Days) 13.7 ASTM C-109
Flexural Strength, N/mm2, (7 Days) 6.5 ASTM C-348
Bond Strength to concrete, N/mm2, (7 Days) 1.53 (concrete Failure) ASTM D-4541 Method A
Initial setting, hours 5.5 ASTM C-191      
Final setting, hours 5.6 ASTM C-191

* Average


Coverage: coverage depends on the population of holes existing in the substrate and on the magnitude of deterioration of the surfaces.


Limitations: surface and application temperature should exceed 7°C. Apply only to a thoroughly cleaned and sound substrate. Mixing should be done mechanically to avoid formation of lumps. Avoid application in rain or contaminated surfaces. Do not add cement, sand, or accelerator to the mix.


Surface Preparation: all surfaces to receive CEM241 must be clean, free of oil, dust, paint, sealers, or any curing compounds. Surfaces contaminated with oil, grease, or dirt should be cleaned and treated with CHEM-CRETE CONCLEAN CCC060. Saturate the substrate with clean water prior to placement.


Mixing: mix the powder product with the bonding agent provided in the ratio 1: 4 powder. CEM241 must be mixed with a low speed mixer or with a drill fitted with a paddle. Add maximum of 2-3 lt. of water to the mix to achieve desired workability (if needed).


Application: CEM241 can be troweled or applied using a spatula for pin hole filling. For applications that require multi layers, make sure the preceding layer is stable, but not fully cured.


Protect surfaces from excessive heat and cold for 24 hours.


Cleaning: Clean all tools, equipment, etc. from CEM241 with clean water before the product reaches initial setting. Cured material may only be removed by mechanical means.


Store CEM241 in cool and dry storage facility. Do not expose to direct sunlight. Product has a shelf life of approximately 12 months if stored in a cool and dry place and in unopened bags.


CEM241 is a non-flammable and non-toxic in nature. Avoid contact with eyes and skin as it may cause irritation due to its alkaline nature.  Splashes of CEM240 should be washed off immediately with clean water.  Wear necessary gloves and dust mask.


LIMITED WARRANTY:   International Chem-Crete Inc. warrants that, at the time and place we make shipment, our materials will be of good quality and will conform to our published specifications in force on the date of acceptance of the order.


DISCLAIMER:   The information contained herein is included for illustrative purposes only and, to the best of our knowledge, is accurate and reliable. International Chem-Crete Inc. is not under any circumstances liable to connection with the use of information. As International Chem-Crete Inc. has no control over the use to which others may put its products, it is recommended that the products be tested to determine the suitability for specific applications and/or our information is valid in particular circumstances. Responsibility remains with the architect or engineer, contractor and owner of the design, application and proper installation of each product. Specifier and user shall determine the suitability of the product for specific application and assume all responsibility in connection therewith.  AM160419.