SLC area designed to produce a smooth, flat surface when applied to
hard, rigid sub-floors such as cement-sand screeds, concrete, tile, stones, etc.
Some of the best cementitious self levelling are as follows:
Watch the mixing and application video of Cementitous Self leveling compound (Sampling):
Groove making (If SLC has to be installed on small area as sample):
Surface preparation:
Priming:
Mixing of the product with water:
Installation of SLC:
Let us see the actual application at the site level:
Mixing:
Priming:
SLC installation:
1..SLC provides “Zero” level – No, SLC are available in powder and
are normally mixed with the water to form semi-liquid / flowable / easy spreadable
grade mix. This needs to be spread and levelling using Depth set pin-rake
trowel OR by using steel notch trowels. Applicator shall have good hands on
experience to achieve the good level.
2..SLC eliminates all undulations: No, when SLC are applied at
thickness lesser than 5mm, will take the profile of the existing flooring. To
eliminates the undulations, proper planning shall be carried out, say – Panelling,
level marks, marking the Depth portions, filling the depth portions first and
allowing it to dry completely, lastly – applying the SCL on over all floor.
3..SLC can take the load: Any material, applied at lesser
thickness, say less than 10mm will transfer the load to the substrate directly.
So proper priming shall be carried out as per manufacturer’s specification.
4..SLC can be left exposed: No, not all SLC. Some SLC’s are
of exposed grade.
5..SLC can be installed at any thickness: No, SLC
are designed at specific thickness because of the filler size as manufacturers
use for the production. For higher thickness, quartz and silica aggregates can
be used as per manufacturer’s specification.
6..Patching work and panel joints cannot be treated by SLC: No, not really
required. Patchable areas shall be cut opened in defined pattern, mix SLC / SLC
+ aggregates (as per manufacturer’s specifications) and fill the patchable
areas (damaged areas) and panel joints. lastly – applying the SCL on over all
floor.
7..Expansion joints shall be over laid: No,
expansion joints are provided to accommodate the expansion and contractions.
SLC are generally rigid and cracks when substrate undergoes expansion and
contractions. So, all expansion joints shall be maintained properly till the
top surface of SLC and shall be treated using flexible polyurethane sealants.
8..SLC not provides seamless surface, all joints due to delay / day end
joints will create lines / offsets: No, it is just a part of application. All
joints edges shall be sand papered to make them flush.
Many thanks.....
Many thanks.....
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