Overview Usage Product Specifications Handling Precautions

Crack Filler Powder


TRUBUILD CFP-525 is a cement-based polymer modified powder material for filling cracks in plastered surface. It is composed of cement, select aggregates, polymer & additives which requires on site addition of water only. Cracks filled with Trubuild CFP-525 enhance the subsequent paintings quality and life.

  • To fill static cracks of 3 to 5 mm.
  • To level undulation on un plastered or plaster celling’s and walls prior to painting.
  • To provide smooth finish to brick, stone, and concrete
  • For crack filling – Fill the mixed paste into the crack by spatula or putty knife blade. Fill excess material and tool it by putty knife blade pressing against crack so that air voids get filled. By wet finger tool the surface of material in to a concave nature by pressing against joint edges
  • For Surface levelling – The mixed smooth paste should be applied by painter blade on the dampened wall or ceiling. The material should be applied at the desired thickness in bottom- to -up fashion to avoid blade marks. For multiple coat applications the previous coat should be allowed to cure for minimum 6 hrs. The subsequent coat should be at the right angle to the previous coat
  • Adhesion - Strong adhesion to common building substrates
  • Easy to use - It is a do it yourself product & requires only onsite addition of water
  • Requires only addition of water on - site at the time of usages.
  • As surface leveller before painting it reduces paint consumption and increases the life of the paint making it economical
How to use
How to use
  • Ensure the joints edges to be neat and sound. Make sure that surface is clean & free from standing water. The surface should be free of loose debris
  • Contaminations of oil, grease or bitumen should be completely cleaned
  • In normal conditions Trubuild CFP-525 does not require a primer. However, in critical areas water based acrylic or SBR based primer can be used depending on the severity of surface and application
  • Mixing ratio of Trubuild CFP-525 to water varies with respect to area of application
  • For filling deep holes and cracks-reduce the water quantity to get a thicker pasty consistency
  • The final mixed product would be of dough consistency paste. In case further soft consistency is required, measured quantity of water can be used


Technical Details
Properties Unit Results Results
Appearance Visual Off White Powder ---
Colour Visual Off White ---
Setting Time Hrs: Min 3:10 ---
Bulk Density g/cc 1.44 ASTM D 7481-18
Pot Life Minutes 20 ISO 13007-3-2010
Tack Free Time Minutes 40 ASTM C 679-2015
Dry Shrinkage % 0.002 ASTM C 157-2017
Pull off Adhesion N/mm2 0.44 ASTM D 7234-2021
Water Absorption @ 15 min ml 1.2 Karsten Tube
Water Absorption @ 30 min ml 3.6
Water Absorption @ 60 min ml 5.5
Water Absorption @ 4 Hrs ml 9.6
Mix Density g/cc 1.52 ----


  • 37.5 running meter per kg (for a depth & width of 5mm)
Usage Restriction
Restriction of usage
  • Trubuild CFP-525 is for static joint filling only. Suitable for cracks less than 5mm width
  • It does not accommodate any movements and thus it is not suitable for dynamic cracks
  • For outside use the Trubuild CFP-525 must be coated over with exterior paint to prevent water penetration
Shelf Life
Shelf Life

Shelf life is 12 months from date of manufacturing in unopened pouch.


Store at cool & dry place, away from sun heat.

  • Packing

    1 Kg.

Handling precautions

Precaution and Limitation


  • Do not apply for cracks of more than 5 mm width
  • Do not apply on wet surfaces. Meant for plaster cracks
  • Should not be used for cracks more than 5 mm thick
  • Not for application in cracks in structural members, expansion joints & separation gaps
  • Not for cracks in POP or painter's putty
  • For application below 10°C, drying time will be delayed
  • Container to be tightly closed after application

For information and advice on the safe handling, storage and disposal of chemical Products, users shall refer to the most recent Material Safety Data Sheet Containing, physical, ecological, toxicological and other safety related data.

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