What is it
Concrete levelling is the process of using concrete grinders to reduce the size of humps (high spots) in concrete slabs and a levelling compound to fill in the low areas. This is done primarily to prepare the slab for laying floor coverings with minimal tolerances.
New concrete slabs are laid to Australian standards which specify 10mm maximum tolerance within any room and 20mm maximum tolerance over entire building footprint.
Why do I need levelling
Many concrete slabs have a variance of height exceeding the maximum recommended tolerance for laying timber, laminates, vinyls and porcelain tiles.
If this is the case, you will need levelling to prepare your slab.
Floating, direct stick and parquetry timber floors generally have a tolerance of 3mm over 3m. Anything outside this tolerance will need levelling to ensure a successful installation, otherwise your timber flooring will have a bouncing effect when laid over high spots and a hollow sound when laid over low spots in existing concrete.
Many new developments have slabs poured to carpet spec. The acceptable tolerance for carpet installation is between 8 – 12mm over 3m. This is not suitable for timber, vinyl and larger porcelain tile installation and levelling will need to take place before they can be laid.
Vinyl & Cork Specification
Once again there is no specific slab specification for laying vinyl flooring. Vinyl flooring can be laid on any smooth clean concrete slab, however, the finish is a lot more professional and aesthetically pleasing if the slab is level. Large open areas and doorways in particular show humps and low areas in the slab. All slabs need a feather coat prior to laying vinyl to ensure surface is smooth. A feather coat is a thin layer of levelling compound 1-2mm thick troweled over the entire floor to ensure a smooth finish.
What do we use
To assure quality on your floor preparation all the way through the floor installation, we want to make sure only the best product is used. Mint Floors & Shutters works with Ultraplan Eco from Mapei.
Ultra-fast hardening self-levelling smoothing compound with very low VOC content.
Interior levelling of new and existing substrates, as long as not subject to moisture, to make them suitable for receiving all types of flooring where high resistance to loads and traffic is required. Levelling existing floors provided they are solid, dry and clean.
Ultraplan Eco is applied up to 10 mm thick per layer by trowel or pump.
For the installation of wooden floors the minimum thickness must be 3 mm.
- Makita Floor grinder
- Mapei Biblock waterseal
- Mapei ECO prim t Primer_gb
- Mapei PLANO3 smooth leveller
- NIVOPLAN 5042-52 MSDS
- NIVORAPID fast drying leveller
- Ultrabond Eco 350 adhesive_gb
- Ultrabond p990 1k adhesive_gb
- ULTRABOND P-990 1K BEIGE 5099-14 MSDS
- ULTRAPLAN ECO LEVELLING
- ULTRAPLAN LATEX PLUS
- ULTRAPLAN MAXI