Sikafloor®-933 Densifier

Hardener and Densifier for Cementitious Floor and Polished Concrete

Sikafloor®-933 Densifier is a modified colloidal silica-based densifier, specially formulated to provide an easier, faster and improved flat-work and finishing of the concrete floor. The use of the product enables reliable application of cementitious flooring and makes the final floor surface denser, harder, and glossier (when treated as polished concrete).

  • Enhances workability and finishing
  • Reduces the risk of delamination on surface
  • Increases surface gloss (in polished concrete) and density
  • Low odour
  • Improves abrasion resistance and durability
  • Increases the available time for finishing in critical conditions
  • Reduces plastic shrinkage and cracking
Product Data Sheet Show all documents

Overview

Usage

The product can be used on commercial and industrial cementitious concrete floors.  

Advantages

  • Enhances workability and finishing
  • Reduces the risk of delamination on surface
  • Increases surface gloss (in polished concrete) and density
  • Low odour
  • Improves abrasion resistance and durability
  • Increases the available time for finishing in critical conditions
  • Reduces plastic shrinkage and cracking

Packaging

20 L jerrycan

200 L drum

Colour

Liquid / Clear

Product Details

Composition

Water-based modified colloidal silica

Shelf life

12 months from date of production

Storage conditions

The product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +30 °C. Always refer to packaging.

Refer to current Safety Data Sheet for information on safe handling and storage.

Density

~1.1 kg/l

(EN ISO 2811-1)

 

Application

Ambient air temperature

Minimum

+5 °C

Maximum

+40 °C

Relative air humidity

Maximum

100 %

Substrate temperature

Minimum

+5 °C

Maximum

+35 °C

Consumption

~14.3 – 28.6 m2/l

Note: These figures are theoretical and do not allow for any additional material due to surface porosity, surface profile, variations in level, wastage or any other variations. Apply product to a test area to calculate the exact consumption for the specific substrate conditions and proposed application equipment.

APPLICATION INSTRUCTIONS

IMPORTANT

Strictly follow installation procedures.

Strictly follow installation procedures as defined in Method Statements, application manuals and working instructions which must always be adjusted to the actual site conditions.

EQUIPMENT

Low pressure sprayer

APPLICATION

IMPORTANT

Spraying equipment

Do not use sprayers which have previously been used to spray silicones or release agents. Ensure spraying equipment is cleaned thoroughly before use and previous membrane residues are removed.

IMPORTANT

Do not mix with other products.

Do not mix the Product with other surface hardeners.

IMPORTANT

Remove over-spray.

Clean off over-spray with water immediately from glass, aluminum or highly polished surfaces to avoid etching.

New concrete

  1. Spray the Product with a low pressure sprayer immediately after flattening of the fresh concrete, and during finishing to gloss level.
  2. At every stage, spray a single application (~14.3 – 28.6 m2/l). IMPORTANT: Take care not to produce puddles.
  3. Finish the floor with power or manual floating/tamping techniques.
  4. To achieve a higher level of surface uniformity and glossiness, polish and grind the surface 7 to 14 days (depending on concrete design properties) after casting (wet polish method).

CLEANING OF EQUIPMENT

Clean all tools and application equipment with water immediately after use. Hardened material can only be removed mechanically.

 

Documents