ULTRA CRACK FILL UCF-400

ULTRA UCF-400 Crack fill is a specially formulated polymer modified repair mortar designed to fully meet the requirement of effectively filling cracks in plasters and in concrete, avoiding the use of costly sealants. ULTRA UCF-400 Crackfill is a dry powder when mixed with water it forms a creamy consistency paste which is ready for use in filling cracks and repairing plasters

Unichem Chennai

Technical Specification

  • BED Thickness - 3 – 12 mm
  • OPEN Time - 30 min
  • POT Life - 2 – 4 hrs
  • Setting Time - 24 hrs
  • Mixing Ratio - 5 – 6 L of Water / 20 kg
  • Packing - 20 kgs
  • Colour - Grey & White

Primary uses:

  • ULTRA UCF-400 Crack fill is ideally suited for filling up of superficial plaster cracks as well as structural cracks.
  • ULTRA UCF-400 Crack fill can be used for repairing ceiling cracks and plasters with ease because of its viscosity.
  • Cracks arising due to plasters cracking at junctions of wall and column or brick work and soffit of beam can be effectively sealed.
  • Cracks at parapet wall junction and roof slabs are also sealed with ULTRA UCF-400 Crack fill.

Composition:

ULTRA UCF-400 Crack fill is available in two grades, namely grey and off white to suit the surrounding surface color and texture. The product is a blend of special cements, special additives and selected grades fine aggregates along with alkali resistant glass fibres. The product when mixed with water in the proportion of 3.5 Volume of powder to one volume of water results in a workable paste which can be trowelled to a fine finish.

Advantages:

ULTRA UCF-400 Crack fill replaces costly sealant and putties. It is non shrink, hence possibility of shrinkage cracks are nonexistent. It has high tensile strength and good adhesion property. The finish achieved is sufficiently smooth. Good resistance to freeze / thaw cycles, carbonation and attack by chlorides. Conventional curing is not required

  • Very Strong adhesion to common building substrates.
  • Easy to use – It is a do it yourself product & requires only onsite addition of water.
  • Non-sagging – Can be used for horizontal, vertical & overhead applications
  • Cost saver – As surface leveler before painting it reduces paint consumption and increases the life of the paint making it economical.
  • It is ideal to fill up to 5 mm wider static cracks.
  • Non-shrink even after curing, prevents from cohesive & adhesive failure on exposure.
  • Single application (does not require second time application, as required in other sealants)
  • No sanding required.Prevents staining
  • Easily paintable after 5 to 6 hours of application

Properties:

  • Form

    :

    Free Flowing light grey/off white powder.

    Bulk Density

    :

    1600 kg/m3

    Application Thickness

    :

    1 mm to 20 mm

    Pot Life

    :

    60 minutes at 20° C

Safety instructions for preparation and application

  • ULTRA UCF-400 component contains cement that when in contact with sweat or other body fluids causes irritant alkaline reactions and allergic reactions to those predisposed. It may damage the eyes. When applying the product it is recommend to use protective gloves and goggles and to take the usual precautions for handling chemicals. If the product comes into contact with the eyes or skin, wash immediately with plenty of clean water and seek medical attention

Preparation:

It is essential that the surface of the concrete to be repaired is sound, clean and uncontaminated. Chase the crack and form a neat “V” shaped groove at least 6mm wide on surface. Damaged plasters can be cut out in more or less square sides. Defective material must be removed carefully using reducing tools, needle guns or sharp tools and chipping hammers. Force must not be applied as it will damage the sound material beneath.

Subsequent Finish:

ULTRA UCF-400Crackfill is suitable for all subsequent decorative finishes and painting. The finish obtained by ULTRA UCF-400 Crackfill is far smoother than conventional plasters.

Shelf life

24 months in unopened packs if kept in a dry store.

Curing:

Start curing after the material has sufficiently hardened for two days and then allow it to dry out slowly (i.e. protect from rapid drying due to wind, sun or excessive heat). Use of Curing Compound is ideal in repairs