FASTslab is best suited for climate zones with under 60" of frost depth. Once the frost depth reaches levels lower than this, the size of the required perimeter insulation skirt becomes a challenge.
FASTslab requires good bearing on dry, native soil. Other soil conditions may be addressed with a local geotechnical engineer.
We have installed the FASTslab system in foundations up to 3000 SF. We notice that once the footprint exceeds 2000 SF, the labour required to precisely level the perimeter increases substantially.
FASTslab can be used in high performance 1-2 storey homes, code built 1-2 storey homes, secondary suites, heated or unheated garages, porches and sheds.
Foundation installers or carpenters can install the FASTslab system. We find a combination of the two is the most efficient team. The carpenters cut and lay out the pieces, and the foundation trade prepares the pad, levels the perimeter and provides extra hands for the install.
FASTslab is available across Canada through TrueFoam and Plastifab. TrueFoam supplies Atlantic Canada and Plastifab supplies the rest of Canada.
Allow 4-8 weeks for delivery after placing your order. Installation time ranges from 1-3 days depending on the size of your project. Be sure to allow time for the required local engineering.
Type 3 EPS is specified in the FASTslab for its higher compressive strength and lower susceptibility to water absorption.
The FASTslab system can be adjusted to accommodate the project energy goals and the local climate. Insulation values of R10, R20 and R40 are recommended options.
The FASTslab system requires a design compliant to Design of Concrete Structures - CSA A23.3 and in accordance with part IV of the NBC for frost protection. A professional engineer licensed in your province in Canada will be required to stamp your design and provide field review. Engineering template drawings will be provided to FASTslab customers by the distributor.
The EPS insulation material is governed by CAN/ULC-S701-05 Standard for Thermal Insulation, Polystyrene, Boards and Pipe Covering.
Like any engineered slab on grade, the FASTslab system works best on a flat site. Once the grade across the building footprint exceeds 2’, it is typically more economical to build a frost wall/slab foundation type. Good, dry soil conditions are important. Geotechnical engineering is recommended if wet conditions or structural fill is required for the site.
Because the insulation becomes the formwork of the slab for the concrete pour, installing the perimeter of the system on a dry day is essential to good adhesion in the joints. Pouring an engineered slab also requires 2-3 days without frost to cure to a minimum strength. The slab can be covered with hay if required to prevent frost accumulating on the surface.
The FASTslab formwork integrates perimeter and interior footers so that site prep is kept to a minimum.
The site preparation is very similar to the preparation of an engineered slab on grade installation. This includes mechanical and electrical rough ins, and gravel compaction.
One significant difference is that the perimeter of the finished FASTslab should be levelled within 1/4”. Prior to installing FASTslab, ensure that your pad is flat and level. Levelling the pad is key to achieving a level slab.
