Keybond

Bonding Liquid and Waterproofing Plaster Additive

Sparcolux Keybond is a waterproofing concentrate that can be used as either a Bonding liquid or waterproofing Plaster Additive. 

As a Bonding liquid, this keycoat product improves surface adhesion and abrasion resistance for chalky, loose surfaces (plaster or previously painted substrates). Can be applied to newly plastered or old painted surfaces. 

As a Plaster Additive, this cementitious slurry additive improves the durability, adhesion properties and water resistance properties of cement mixes, plaster mixes, tile adhesive mixes and tile grouts.

Sparcolux Keybond benefits:

Versatile

Multi functional Waterproofing plaster additive and surface bonding liquid keycoat

Impermeability

Improves water & damp resistances

Mechanical strength

Increases adhesion properties 

Increases tensile and compressive strength of plaster mixes

Easy to use

Easy to mix with cement and gypsum-based mortars

Economical

Concentrate that can be diluted

PACK SIZE

Appearance 

White Liquid

SG

0.99 – 1.03

Viscosity 

65 – 70 ku

pH 

8.5 – 9.5

APPLICATION INFORMATION – BONDING LIQUID +

Improves surface adhesion and abrasion resistance. Can be used to bond and seal loose, powdery plasters or on chalky, powdery previously-painted walls. 

 

USAGE PRECAUTIONS

Read all instructions before use. 

  • Only apply to dry surfaces with a permanent moisture content less than 10%.
  • New plaster or concrete surfaces must cure for a minimum of 21 days 
  • Do not apply or use  in cold weather below 8°C or if imminent rainfall is expected. 
  • In areas affected by heavy dew do not apply after 2pm
  • Do not apply coating on contaminated or unsound surfaces as this will affect the adhesion.
  • Keybond is not suitable as a final coat. 

 

SURFACE PREPARATION

  • Remove all loose and flaking material. 
  • Sand smooth high gloss surfaces. 
  • Treat algae or fungi with a biocide cleaner. 
  • Thoroughly clean any surface contaminants with Sparcolux Sugar Soap.
  • Repair surface cracks, holes or damaged plaster with crack filler. 

APPLICATION INSTRUCTIONS

  • Shake product well before use. 
  • Dilute two parts Keybond with one-part water and thoroughly mix.
  • Apply with a block brush, thoroughly working product into all cracks and holes. 
  • Allow 2 – 4 hours drying time

 

APPLICATION INFORMATION – PLASTER ADDITIVE +

Improves durability, adhesion properties and damp resistance.

 

APPLICATION INSTRUCTIONS

  • Shake product well before use. 
  • Dilute two parts Keybond with one-part water and thoroughly mix. 
  • Only use with fresh moisture-free cement / plaster.
  • Use clean tools and containers to apply and mix 
  • Mix cement and sand first. 
  • Diluted Keybond can be added directly to grouts, tile adhesive, gypsum plasters and mortars.
  • Pour directly into the plaster mix as required. 
  • Mix to a lump free, uniform consistency and apply. 
  • Clean equipment 

 

Product 

Diluted Sparcolux Keybond

Plaster Mix 

(Cement: 1kgs | Plaster Sand 4kgs)

2 – 2.5 Litres

Concrete Mix 

(Cement: 1kgs | Sand: 4kgs | Stone: 3kgs)

1.75 – 2 Litres

Tile Adhesive 10kgs

4 – 4.5 Litres

Tile Grout  2kgs

1 – 1.2 Litres

Gypsum Plasters

1.2 – 1.4 Litres

** Guideline quantities results may vary. Adjust mix as required.