Surface Retarder Ultra

Downloads

MSDS

pdf-MSDS
SR20
pdf-MSDS
SR25

 

 

 

 

Brochure

pdf-BROCHURE

 

 

Product properties

Appearance/Colour: SR20 - Blue / SR25 - Green

Viscosity: Low - Medium

Packaging: 5, 20 & 200ltr drums

Shelf Life: 12 months if stored in original, unopened container

Coverage: 4 - 6 m²/ Litre

 

Permacolour Surface Retarder Ultra is a solution of chemicals which react with cement in the concrete surface and retards the set of the surface layer to a depth of between 3mm and 12mm while the underlying concrete sets. This enables the concrete surface to be removed easily, often by brushing or water blasting and exposes the aggregate to give the depth of the etch to the concrete.

These retarders come in two forms:

  1. SR20 Ultra - Maximum strength of concrete - 20MPA
  2. SR25 Ultra - For concrete strengths over 20MPA

Uses

Permacolour Surface Retarder Ultra is used only on horizontal concrete surfaces to expose the aggregate, it can also be used to form a mechanical key to improve the key of new concrete to old concrete

**As a general rule, the depth of etching should not be greater than one-third of the mean diameter of the aggregate.

Important Notes

  • Permacolour Surface Retarder Ultra is supplied ready-to-use
  • No need for any mixing and MUST NOT BE DILUTED.
  • If a high powered water blaster is being used, take particular care as not to leave the nozzle aimed in one particular spot for a long time.
  • Do not leave the treated surface longer than the specified time because a concrete surface will harden and render the retarder useless.
  • Always wash out spraying equipment with warm water.