Low-stress, cementitious lightweight screed for levelling and filling subfloors with large unevennesses
Larger unevenness and height differences can be quickly and easily repaired in the system with WAKOL Z 590 lightweight screed - even in areas with limited structural load-bearing capacity. The low-stress, cementitious lightweight screed is suitable for use in layer thicknesses of 20-300 mm in a system with WAKOL AR 150 Reinforcement Fibre and approved Wakol levelling compounds for levelling and filling substrates in bonded (from 20 mm) and on a separating layer (from 30 mm) in interior areas.
General advantages of the renovation system
-Quick renovation of larger unevennesses and height differences
-easy application
-good insulating properties
-low system weight of approx. 34 kg/m² (30 mm WAKOL Z 590 lightweight screed, WAKOL AR 150 reinforcement mesh and 10 mm WAKOL Z 515 Thin screed) compared to approx. 80 kg/m² for cement screed (40 mm)
Schematic structure
Wakol offers two system structures with the lightweight screed.
*Step 1 // Set up WAKOL Screed edge strips (8 mm thick)
*Step 2 // Depending on whether work is to continue in bond or on a separating layer.
In combination with WAKOL D 3003 Dispersion Primer, depending on the substrate, WAKOL D 3004 Primer Concentrate, WAKOL D 3045 Special Primer or Pre-treat WAKOL Z 560 Fast Screed as bonding slurry with WAKOL D 3004 Primer Concentrate.
OR
When working on a separating layer: Lay out a PE film 0.2 mm thick, ensure crease-free installation.
*Step 3 //
Mix the lightweight screed with 4.5-5 litres of water in a sufficiently dimensioned mortar bucket using a spiral mixer. Alternatively, a compulsory mixer or a compressed air screed pump (e.g. ‘Estrich-Boy’) can be used.
*Step 4 //
Install WAKOL Z 590 Lightweight screed at the correct height, e.g. using screed gauges, and level off. Then smooth with a screed float. Protect the surface from being walked on by other trades before applying the levelling layer.
Allow 24 hours drying time.
*Step 5 //
Lay out WAKOL AR 150 Reinforcement Fabric.
*Step 6 //
Smooth the surface with WAKOL Z 645 Filling Compound, dust-reduced or
WAKOL Z 640 Filling Compound mixed with WAKOL D 3060 Plastification Additive. The consumption of the plasticised compound is approx. 3-5 kg/m².
*Step 7 //
Full-surface levelling with approved Wakol levelling compound or
WAKOL Z 515 Thin Screed in a minimum layer thickness of 10 mm, using a pin squeegee and WAKOL height levelling pin. The consumption is approx. 15-18 kg/m².
The maximum layer thickness for cementitious levelling compounds is 15 mm.
Laying of the flooring / parquet can begin after complete drying.
*Step 1 // Set up screed edge strips (8 mm thick)
*Step 2 // Depending on whether work is to continue in bond or on a separating layer.
In combination with WAKOL D 3003 Dispersion Primer, depending on the substrate, WAKOL D 3004 Primer Concentrate, WAKOL D 3045 Special Primer or
Pre-treat WAKOL Z 560 Rapid Screed as bonding slurry with WAKOL D 3004 Primer Concentrate.
OR
When working on a separating layer, lay a PE film 0.2 mm thick and ensure crease-free installation.
*Step 3 //
Mix the lightweight screed with 4.5-5 litres of water in a sufficiently dimensioned mortar bucket using a spiral mixer. Alternatively, a compulsory mixer or a compressed air screed pump (e.g. "Estrich-Boy") can be used.
*Step 4 //
Install WAKOL Z 590 Light Screed at the correct height, e.g. using screed gauges, and level off. Then smooth with a screed float. Protect the surface from being walked on by other trades before applying the levelling layer.
Allow 24 hours drying time.
*Step 5 // Laying WAKOL AR 150 Reinforcement Fabric
*Step 6 // Full-surface levelling with WAKOL Z 515 Thin Screed in a minimum layer thickness of 10 mm, using a pin squeegee and levelling pins (consumption approx. 20-23 kg/m²). The maximum layer thickness is 15 mm.
After complete drying, the laying of the flooring / parquet can begin.
Plasticising operation not required
Please always observe the technical information before processing.
Further information on WAKOL Z 590 lightweight screed can be found here.
