Oxides & Mortar Additives By Southtile Ltd
Premium Pigments for Concrete, Mortar, Render & More
Whether you're colouring concrete, enhancing mortar, or crafting a custom finish, Southtile Ltd offers a stunning selection of high-quality oxide pigments designed for durability, vibrancy, and long-lasting performance.
Why Choose Southtile Oxides?
ISO-certified pigments for colour stability and durability
Suitable for concrete, mortar, render, grout, and plaster
Compatible with white or grey cement for custom tones
Trusted by builders, landscapers, and DIYers across NZ
Available in bulk or small quantities for any project size
“Our oxides are UV-resistant, fade-proof, and designed to last in New Zealand’s climate”
Explore Our Range of Oxides
Choose from a wide spectrum of colours to suit your project:
Not seeing the colour or size you need? Contact us at info@southtile.co.nz—we’ll help you find the perfect match”
Mortar Additives & Masonry Cleaning Products
Southtile Ltd – Trusted by Bricklayers, Builders & DIYers Across NZ
Simplify Your Bricklaying Tasks with Smart Additives
Whether you're laying bricks, blocks, or stone, the right mortar additives make all the difference. Southtile Ltd supplies industry-trusted solutions to improve workability, durability, and finish—available online and in-store with NZ-wide delivery.
Mortar Additives for Better Performance
Masons Air Flex – 15Kg & 1.7Kg
A powerful plasticizer designed for brick and block layers.
“Ideal for large-scale projects and hot weather conditions”
Lime Juice Mortar Additive
“Enhance mortar consistency and bonding strength”
Cem-Gon Concrete Splash Removal Spray
Effortlessly removes concrete splashes from stainless steel, Aluminum joinery & Asphalt.
“Fast-acting and safe for sensitive finishes”
Hydrochloric Acid – 20L
Heavy-duty cleaner for masonry and concrete surfaces.
“A must-have for professional builders and site managers.”
Efflock – Efflorescence Protection Additive
Efflock is a concrete and mortar additive that prevents moisture ingress and efflorescence—trusted by professionals across NZ. Available in 1L, 5L, and 20L containers
Use in:
Exterior plaster render
Tile adhesive & grout
Brick mortar
Precast concrete products
“Repels damp, improves durability, and keeps surfaces clean”
FAQs About Mortar Additives & Oxides
Q: What is efflorescence and how do I prevent it?
A: Efflorescence is a white, powdery deposit caused by moisture drawing salts to the surface. Additives like Efflock prevent this by repelling water and sealing pores.
Q: Can I use Air Flex with all types of mortar?
A: Yes. Air Flex is compatible with most cement-based mortars and improves workability without compromising strength.
Q: Can Efflock be used in tile adhesive?
A: Yes. Efflock is suitable for tile adhesive, grout, and other cementitious products to prevent moisture-related issues.
Q: How much oxide should I add to concrete or mortar?
A: Typically, add oxide at 5% of the cement weight. For example, 5kg of oxide per 100kg of cement. Too much can weaken the mix.
Q: Will the colour fade over time?
A: High-quality oxides like ours are UV-resistant and retain colour for decades when mixed properly.
Shop Online at Southtile Ecommerce
Find everything you need for bricklaying and masonry work in one place.
NZ-wide delivery
Competitive pricing
Expert support for trade and DIY customers
