RTJ Constructions delivers structural formwork and off-form concrete construction across the Coffs Coast, Clarence Valley, and Northern NSW — for builders, engineers, and developers who need the job done right the first time.

We've poured everything from curved slabs on steep coastal sites to Class 2 off-form ceilings on high-spec residential builds, pool shells, suspended slabs, and structural walls.

Our in-house team handles the full scope — formwork design, build, strip, and concrete finishing — with no subcontracting the hard parts out.

Backed by Master Builders NSW recognition and years of experience on demanding architectural projects, RTJ brings the same precision to a straightforward suspended slab as it does to a curved off-form ceiling with an ocean view.

What we deliver

Suspended formwork
Engineered formwork for suspended slabs, balconies, cantilevered structures, and structural floors — including curved and complex geometry.

Off-form concrete
Class 2 off-form finish to architectural standard, including board-form texture, smooth finish, and curved elements.

Concrete pool shells
Structural formwork and concrete for residential and commercial pool construction.

Structural walls and columns
Formwork and pour for columns, blade walls, retaining walls, and feature concrete elements.

Concrete stairs
In-situ formed concrete staircases, internal and external.