Primo Floor Screed Waterproof 303 – High Performance Cement-Based Floor Screed with Waterproofing

A high performance cement-based floor screed specially formulated with waterproofing polymers and additives. Ideal for wet and exterior areas requiring moisture resistance, durability, and crack protection. Excellent waterproofing properties.

Features

Strong adhesion to concrete and masonry surfaces
Smooth workability and easy application
Crack resistant and long-lasting durability
Suitable for bathrooms, balconies, rooftops, kitchens, parking garage, basement, and more
Waterproof barrier with excellent bond strength

Advantages

2-in-1 Function: levelling screed + waterproof barrier
Pre-mixed formulation: consistent quality, easy to apply, only add water
Reduces risk of water leakage and efflorescence
High durability and good weather resistance
Suitable for interior and exterior use
Can be applied from 10 mm up to 75 mm thickness in one layer

Technical Data

Appearance	Grey premixed powder
Binder	Graded sand and cementitious with polymer modification
Mixing Ratio	Approx. 5.5 – 6.5 L water / 40 kg bag
Density (Wet Mix)	~ 2.0 g/cm³
Compressive Strength	≥ 25 N/mm² at 28 days
Flexural Strength	≥ 6 N/mm²
Bond Strength	≥ 1.0 N/mm²
Waterproofing	Impermeable to water under 1 bar pressure
Thickness Range	10 mm – 75 mm
Pot Life	Approx. 60 minutes at 25°C
Coverage	~2.5 m² per 40 kg bag at 10 mm thickness
Curing Time	Light foot traffic: 24 hrs / Full cure: 7 days

Application & Usage

Surface Preparation: Substrate must be sound, clean, and free of dust, grease, or loose particles. Dampen substrate with clean water, but avoid standing water. Apply a bonding slurry coat for maximum adhesion.
Mixing: Place 5.5–6.5 L clean water into a mixing container. Slowly add 40 kg of Floor Screed Waterproof 303 while mixing. Mix 3–5 minutes until homogeneous. Use mechanical mixer for best results.
Application: Apply mixed mortar evenly. Compact and level using trowel/straight edge. For sloped screeds, ensure proper gradient. Protect from rain and rapid drying during curing.
Packaging: 40kg moisture-resistant bags.
Storage & Shelf Life: Store in a cool, dry place away from direct sunlight. Shelf life: 12 months in unopened packaging.
Safety & Health: Keep out of reach of children. Use gloves, mask, and eye protection. In case of eye contact, rinse with water and seek medical attention if irritation persists. Refer to SDS before use.

* All technical data are based on laboratory tests. Actual data may vary due to circumstances beyond our control.

Frequently Asked Questions (FAQ)

It is ideal for wet and exterior areas such as bathrooms, balconies, rooftops, kitchens, parking garages, basements, and other spaces needing strong moisture resistance.

It offers strong adhesion to concrete and masonry, smooth workability, crack resistance, long-lasting durability, and forms a waterproof barrier with excellent bond strength.

It provides a 2-in-1 solution (levelling screed + waterproofing), comes pre-mixed for consistent quality, helps reduce leakage and efflorescence risks, is durable with weather resistance, suitable for interior/exterior use, and can be applied in one layer from 10–75mm.

Mix 40kg with about 5.5–6.5L of clean water for 3–5 minutes until homogeneous. Apply evenly, compact and level with a trowel/straight edge, and protect from rain or rapid drying during curing. Pot life is about 60 minutes at 25°C.

More detail about MP Sand Industries Sdn Bhd

PRIMO Waterproof Screed WP303

Primo Floor Screed Waterproof 303 – High Performance Cement-Based Floor Screed with Waterproofing

Features

Advantages

Technical Data

Application & Usage

Frequently Asked Questions (FAQ)

Where can I use Primo Floor Screed Waterproof 303?

What are the key features of Primo Floor Screed Waterproof 303?

What are the advantages of using Primo Floor Screed Waterproof 303?

How do I mix and apply Primo Floor Screed Waterproof 303?