RETANOL® 511 – The masterpiece. Precise readiness for floor covering after 72 hours.
RETANOL® 511, EKA and VIWA are for tension-free high performance cementitious screeds with low shrinkage. Depending on dosage RETANOL® 511 guarantees workability as of three days, RETANOL® EKA and RETANOL® VIWA as of five days.
- Workability as of 3 days
- Long workable life
- Suitability for foot traffic after 24 h, subjected to load after 48 h
- Tension-free and with low shrinkage
Areas of application
- For indoors and outdoors
- For early floorcovering, fast curing bonded screeds
- For screeds on separation or insulation layers
- For heating screeds
Temperature of material relative air humidity
+5 °C up to max. +28 °C
Packaging: 20 litres
Processing information for screed experts
- Floorcovering after 18 – 21 days: 0.20 litres Retanol® per screed mixture (standard mixing vessel, 250 l gross capacity) = 1.000 ml/m³
- Floorcovering after 12 – 14 days: 0.25 litres Retanol® per screed mixture (standard mixing vessel, 250 l gross capacity) = 1.250 ml/m³
- Floorcovering after 3*/5 – 7 days: 0.35 litres Retanol® per screed mixture (standard mixing vessel, 250 l gross capacity) = 1.750 ml/m³, W/C ratio: max. 0.6 (for all dosages).
(These data refer to 50 mm application thickness for unheated and 65 mm maximum for heated floor screeds.)
In case of application thicknesses > 60 mm for unheated floor screeds, the dosage must be increased to 0.35 litres Retanol® = 1.750 ml/m³ irrespective of the desired workability. However, we do recommend this increase in dosage from > 50 mm floor screed thicknesses. Experience has shown that even at this dosage it takes longer until workability is obtained, especially in case of very fast acceleration phases (3*, 5 and 7 days). Delays of 2 to 3 days in case of screed thicknesses from 70 to 80 mm and 5 to 6 days in case of floor screed thicknesses from 80 to 100 mm are possible. It is possible to increase the dosage up to a maximum of 500 ml standard screed mixture = 2,500 m³. CAUTION: 500 ml=2,500 ml/m³ must under no circumstances be exceeded!
- A dosage of 0.35 litres Retanol® = 1.750 ml/m³ is also necessary if pipe coverings are to be used for heating screeds from 35 mm.
- For the specified floor screed qualities CT-30-F5 or CT-C35-F5 (applicable to all screed types) a dosage of 0.35 litres Retanol® = 1.750 ml/m³ is also necessary at all times, irrespective of the screed thickness.
DIN 18560, DIN 13318 and DIN 13813 must be observed when applying Retanol® 511/611/711 and Retanol® EKA/EKA BLAU/EKA BW/VIWA/VIWA GELB. For aggregates, grading curve A/B, 0 – 8 mm, must be used for making screed concrete in accordance with DIN 1045-2. Cement: see PCT Cement Approval List. Only use suitable types of cement.
The general guidelines, PCT data sheets and normative specifications for cement screeds are applicable to the laying and making of Retanol® screeds. The accelerated hardening process of Retanol® 511/611/711 and Retanol® EKA/EKA BLAU/ EKA BW/VIWA/VIWA GELB must be observed.
Application temperature: +5 °C up to max. +28 °C (ambient and substrate temperature).
Apply Retanol® 511/611/711 and Retanol® EKA/EKA BLAU/EKA BW/VIWA/VIWA GELB within 60 minutes after mixing.
In general: Retanol® screeds should have been levelled and smoothed/rubbed after max. 90 minutes.
Never reactivate screed mortar which is already setting with water – this also applies in particular to mechanical and manual smoothing – nor mix with fresh Retanol® 511/611/711 and Retanol® EKA/EKA BLAU/EKA BW/VIWA/VIWA GELB.
Always shake Retanol® well prior to use.
Shake the product at regular intervals (about every 30 minutes) during application. Long "standstill periods" of the canister cause the ingredients to deposit at the bottom, with a negative effect on the function of the product.
Draught, direct sunlight and excessive heat (heating period in the cold season)* must be avoided during the entire application. It may be necessary to darken large window fronts and floor-level glass facade areas.
*Applies only to 511 Retanol® 511.
Fill the floor screed conveyor to about one-half with sand and the entire amount of cement as usual, add Retanol® 111 and Retanol® EKA/VIWA to the first mixing water (usually 5 – 10 litres) and then fill the conveyor completely. In so doing, gradually add the required amount of residual water until a stiff to pliable consistency is obtained. A mixing time of 2 minutes ensures proper blending of the ingredients and the effect of the added Retanol® and must therefore be observed at all times.
Retanol® must never be mixed with other screed or mortar additives.
The consistency of the mixture must be either stiff to pliable or pliable!
If the mixture is too soft or contains too much water, the strength of the screed is insufficient. This may lead to the formation of shrinkage cracks, deformations and curling. Readiness for floorcovering will then only be obtained much later. The strength of the screed and the low residual moisture important for workability depend on the following factors:
Insufficient compaction of the screed results in low screed strength.
Retanol® is suitable for almost all conditions on the construction site. At low or extremely high ambient and substrate temperatures and high relative air humidity (> 70 %) the curing and drying times may be slightly longer, approx. 1 – 4 days at a dosage for approx. 14 days.
At an acceleration/dosage for 7 days it takes approx. 1 – 2 days longer until workability is obtained. These data refer to the comparison with ambient conditions at +20 °C and a relative air humidity of 60 %. Air exchange is however obligatory from the second day after laying the screed.
Please observe our notes on the regular ventilation of rooms in Section 7.3.
Screed surfaces must be neither partly nor fully covered during the curing process until workability has been obtained. This must in particular be observed by the client.
The screed readiness for floorcovering may only be determined with a CM measuring device. Electronic measuring devices may not be used for Retanol® screeds.
The required floor screed thickness depends on the provisions of DIN 18560. All drying times refer to 50 mm application height for unheated and 65 mm maximum for heated floor screeds. In case of greater application heights it takes longer until readiness for floorcovering is obtained.
Only use suitable types of cement approved by PCT.
Grading curve A/B, 0 – 8 mm, for making screed concrete in accordance with DIN 1045-2.
RETANOL® 511, EKA and VIWA are compatible with CEM I and CEM II according to DIN EN 197. Only use cements released by PCT.