Product Description

Splash coat is a rough preparatory layer of cement mortar that is sprayed or dashed onto walls before plastering. Its purpose is to improve the adhesion of plaster to the surface and prevent cracking or peeling later.

Importance of Splash Coat Before Plastering

• Improves plaster adhesion to the wall

• Reduces the possibility of cracks

• Equalizes water absorption of the surface

• Prevents plaster from falling or peeling over time

• Suitable for concrete and block walls

Splash Coat Mix Components

• Cement

• Washed sand (fine to medium)

• Water

• (Optional) Bonding agent such as Sika Latex to increase adhesion

Common Mixing Ratio

• 1 Cement : 1.5 – 2 Sand

• Water as required (relatively fluid consistency)

Splash Coat Application Method

Surface Cleaning
Remove dust, oils, and mortar residues from the wall.

Wall Wetting
Moisten the wall with water without leaving standing water.

Preparing the Splash Mix
Mix cement, sand, and water until a rough, fluid consistency is achieved.

Spraying or Dashing the Splash Coat
Apply using a trowel or spraying machine, ensuring rough surface coverage.

Allowing the Splash Coat to Dry
Leave for at least 24 hours before starting plastering.

Important Notes

• Do not level or smooth the splash coat

• It must remain rough to enhance adhesion

• Plastering must not start before the splash coat dries

• Light water spraying the next day is recommended for curing