RapidSet instant post hole structural concrete is dry bagged premixed concrete with special additives that will make the concrete set in 15 minutes (at 21o Celsius) when added to water. However, warmer outside temperatures (summer) means a faster set time, colder temperatures (winter) means a slower set time.
RapidSet bagged concrete will reach 20MPa after 28 days and is suitable for structural projects such as deck posts and non structural projects such as fence posts.
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.