Products

Primers & Sealers

Every lasting finish begins below the sheen. Walltrust primers and sealers prepare cement, plaster, gypsum and metal so topcoats bond, hide and endure.

High adhesionLow VOCAnti-bacterialInterior & exterior sealers

Need a full build-up? See recommended wall systems or use the paint estimator.

Primer & Sealer Line

First loyalty is to the wall.

Before colour, there is bond — the quiet craft of preparation.

Painters know the truth clients rarely see: a beautiful emulsion fails when the base is weak. This line is Walltrust’s vow to the substrate — Nira Wall Primer for bright, high-hide interiors; Astra Primer and 2in1 Primer as dual-use sealers for masonry and gypsum; Multipurpose Wall Sealer for deep concrete sealing; and Red Oxide Metal Primer for steel that must not surrender to rust. Invisible work. Visible longevity.

Primer & Sealer Line

Walltrust Nira Primer

Primers & Sealers – Water-Based Interior Wall Primer

Walltrust Nira Primer is a specially formulated water-based primer for interior cement and masonry surfaces. It offers excellent whiteness and good hiding properties as an effective undercoat to emulsions.

Low VOC

Good Adhesion

Superior Coverage

Excellent whiteness

Dilution

50% by volume with clean, potable water

Coverage

100–110 sq.ft/litre/coat. Coverage depends on surface porosity, film thickness, and application method.

Pack Available

10L

20L

Finish

WATER-BASED INTERIOR WALL PRIMER

Enquire about Nira Primer →

Primer & Sealer Line

Walltrust Astra Primer

Primers & Sealers – Interior & Exterior Wall Sealer

Astra Primer is a high-quality water-based wall sealer suitable for interior and exterior use. Designed for masonry and gypsum surfaces, it ensures excellent adhesion and sealing properties.

Anti-Bacterial

Low VOC

Good Adhesion

Superior Coverage

Dilution

100% by volume with potable water for exterior; 50% by volume with potable water for interior

Coverage

100–110 sq.ft/litre/coat

Pack Available

10L

20L

Finish

INTERIOR & EXTERIOR WALL SEALER

Enquire about Astra Primer →

Primer & Sealer Line

Walltrust 2in1 Primer

Primers & Sealers – Dual-Use Advanced Wall Sealer

2IN1 Primer is a premium interior & exterior water-based wall sealer, specially formulated to enhance topcoat adhesion and protect against algae and fungi. It bonds well with cement and plaster, extending paint life and durability.

Anti-Bacterial

Low VOC

Good Adhesion

Superior Coverage

Dilution

100% with potable water for exterior; 50% with potable water for interior

Coverage

110–130 sq.ft/litre/coat

Pack Available

10L

20L

Finish

DUAL-USE ADVANCED WALL SEALER

Enquire about 2in1 Primer →

Primer & Sealer Line

Walltrust Multipurpose Wall Sealer

Primers & Sealers – Matt

Walltrust Multipurpose is a high-performance water-based wall sealer designed to ensure excellent adhesion and deep sealing of concrete and masonry substrates. Anti-algal and anti-fungal properties protect against environmental damage.

MATT

Good Adhesion

Anti-algal & anti-fu…

Suitable for interio…

Dilution

Exterior: 100% by volume with clean potable water. Interior: 50% by volume with clean potable water.

Coverage

110–140 sq.ft/litre/coat. Depends on surface condition, porosity, and application method.

Pack Available

10L

20L

Finish

MATT

Enquire about Multipurpose Wall Sealer →

Primer & Sealer Line

Walltrust Red Oxide Metal Primer

Primers & Sealers – Matt

Walltrust Red Oxide Metal Primer is a high-performance epoxy-based primer designed to provide superior protection against rust and corrosion on metal surfaces. Ideal for both interior and exterior applications under moderate to high humidity.

MATT

Good Adhesion

Ready-to-use — no di…

Excellent adhesion o…

Coverage

Approx. 50 sq.ft/litre (2 coats) on smooth mild steel for 80–100 microns DFT. Application: brushing.

Pack Available

500ML

Finish

MATT

Enquire about Red Oxide Metal Primer →

Warranty