Benefits for Builders

Installation benefits of MAXRaft®

Maxraft® fully insulated concrete foundations provide a variety of benefits on site. The polystyrene insulation is designed to minimize waste onsite with pre-cut polystyrene that is installed like a jigsaw puzzle.  Any leftover material is taken off site and recycled. As a builder you can choose to either install the slab® yourself or engage our team to complete the slab for you. 

Ease of Install

250mm MAXSlab®

The polystyrene for a 250mm MAXSlab® is delivered to site in pre-cut segments and will be installed just like a jigsaw puzzle. Pre-made corners make the installation of the MAXRaft edge profile fast and simple. The only cuts made on site will be those for underfloor drains which protrude through the foundation. Starting around the perimeter, where boxing outlines the outside foundation, the perimeter footings can be laid up against the inside of the boxing. From here, the infill and load bearing thickenings can be placed using the perimeter as a base and the panelplan to specify which piece goes where.  Steel and concrete are then installed as per the engineers specification.

320 / 400mm MAXRaft®

Similar to a 250mm MAXSlab®, a 320 or 400mm MAXRaft is always fully insulated. In this design we use a POD layout, however we always have insulation right through all thickenings and ribs. The MAXRaft perimeter profile is installed first and pre-made corners are installed to minimise waste. A little extra time will be spent cut any pods to fit onsite, however all waste will be picked and recyled following the concrete pour.

Our products are simple and quick to install.  Typically we would allow 5 days to lay and pour a 200m² MAXRaft slab, allowing time for any inspections required.  Where underfloor heating is specified additional time may be required.

Reduced Concrete

With 150mm MAXRaft® insulation through the center of the house, concrete requirements are lower than for traditional slabs. As such, the concrete can often be poured as single pour, and the reduced volume requirements mean that pour is quicker.




Why MAXRaft®

Less Excavation

Excavation requirements are dependant on the ground conditions. Generally all our products are laid directly on top of the ground. 

MAXSlab excavation requirements tend to be minimal and on many sites it is a matter of a simple site scrape to remove topsoil. 


Site Preparation

Site preparation is quick and easy. Once the ground has been levelled and compacted in line with the Geotech report minimal bracing is required. Simply put up boxing around the perimeter and lay the polythene underlayer to 100mm outside the foundation and the MAXRaft® insulation can be installed in a few hours.


MAXRaft slabs are protected following the concrete pour. Our recommended solution is a waterproof plaster system reinfored with mesh. MAXRaft can take care of the plastering requirements or you may choose to coordinate this yourself. Please contact us if you have any questions.


Testing and Code Approvals

We have been through the rigorous CodeMark process and obtained the CodeMark accreditation. Our processes and materials have been independently verified as meeting industry standards.

MAXRaft® - The right choice