Micro Silica Concrete is a high performance, very dense, strong concrete made with naturally occurring amorphous silica. It performs well in aggressive environments, for example marine environments as it provides high early strengths and durability. Micro Silica Concrete contains naturally occurring silica, 100x finer than cement, that fills the water spaces between the cement particles reducing the bleed and increasing permeability. Micro Silica Concrete is formed when silica reacts with part of the calcium hydroxide and provides a strong chemically resistant paste. The hydrophilic nature of silica and the large surface area makes the concrete thixotropic and conhesive, the ideal state for a highly workable concrete to reduce segregation.
Firth is one of New Zealand's best known and most trusted trade names in concrete. They have been developing, manufacturing and delivering concrete and concrete products to New Zealanders for almost a century.
90 year proud history
The history of Firth is part of the history of New Zealand. Firth's capability extends through the construction industry, roading & infrastructure, industrial and commercial projects to residential builds.
Industry leading
All of our products are formulated to meet strict NZ standards. Our engineers ensure Firth customers consistently receive delivery of the highest quality product that they can rely on. Our concrete products are tried and trusted so customers can be sure what we make, makes the grade. Always.
Our national, dependable brands include: Firth Certified Concrete®, Firth Masonry, Firth RibRaft® floors, Dricon® bagged concretes, mortars and sands.
Innovation that endures
From day one innovation has been at our core, but not at the expense of long lasting durability. In 1925, the 'original' Firth family with their entrepreneurial spirit created innovative concrete products that made life easier.
Today's wider Firth family still carries that same can-do spirit into today's market challenges. Our designers work alongside our engineers to ensure new designs will stand up to the rigors of time.
Kiwi Made
Like the people who manufacture them, our concrete ranges are all products of New Zealand. We employ 650 people spread across 70 plant sites throughout the country.
Firth's strength lies in its regional relationships delivering a quality service locally to loyal customers, every day.