Product

RenoScreed® Energy-Saving refurbishment system

Description

A high-strength, low-shrinkage cementitious screed with special properties.

Field of operations

Particularly suitable for heated screeds as well as for use in old buildings on wooden joist ceilings, due to its low area load and high flexural tensile strength.

Classification

Special construction, following the example of DIN 18 560.

Deflection at 400 N load and 35 mm thickness

>= 0.150 mm (0.164 mm approx., depending upon the mixture).

Utilization in the permanently wet area

The screed must be protected against dampness (e.g., with an surface damp-proof membrane) so that the steel fibres do not rust, (expand) and cause spalling.

Screed’s minimum thicknesses in the thinnest point at 2 kN/m² area load

>= 2.0 cm for bonded screeds (without steel fibres).

>= 2.5 cm for screeds laid on a separating layer, >= 3.0 cm for floating screeds

>= 4.0 cm in the case of heated screeds laid on a separating layer and with a nominal cover of >= 25 mm

>= 4.5 cm in the case of heated floating screeds and with a nominal cover of  >= 25 mm

Screed’s nominal thicknesses for the dimensioning at 2 kN/m² area load

>= 2.5 cm for bonded screeds (without steel fibres).

>= 3.0 cm for screeds laid on a separating layer, >= 3.5 cm for floating screeds 

>= 4.5 cm in the case of heated screeds laid on a separating layer and with a nominal cover of   >= 30 mm

>= 5.0 cm in the case of heated floating screeds and with a nominal cover of  >= 30 mm

Screed’s nominal thicknesses for the dimensioning at 2 kN point load and 3 kN/m² area load

>= 2.5 cm for bonded screeds (without steel fibres).

>= 3.5 cm for screeds laid on a separating layer, >= 4.0 cm for floating screeds 

>= 5.0 cm in the case of heated screeds laid on a separating layer and with a nominal cover of  >= 35 mm

>= 5.5 cm in the case of heated floating screeds and with a nominal cover of  >= 35 mm

Screed’s nominal thicknesses for the dimensioning at 3 kN point load and 4 kN/m² area load

>= 2.5 cm for bonded screeds (without steel fibres).

>= 4.0 cm for screeds laid on a separating layer, >= 4.5 cm for floating screeds

>= 5.5 cm in the case of heated screeds laid on a separating layer and with a nominal cover of  >= 40 mm

>= 6.0 cm in the case of heated floating screeds and with a nominal cover of  >= 40 mm

Screed’s nominal thicknesses for the dimensioning at 4 kN point load and 5 kN/m² area load

>= 2.5 cm for bonded screeds (without steel fibres).

>= 4.5 cm for screeds laid on a separating layer, >= 5.0 cm for floating screeds

>= 6.0 cm in the case of heated screeds laid on a separating layer and with a nominal cover of  >= 45 mm

>= 6.5 cm in the case of heated floating screeds and with a nominal cover of   >= 45 mm

Screed’s nominal thicknesses for the dimensioning at 5 kN point load and 7.5 kN/m² area load

>= 2.5 cm for bonded screeds (without steel fibres).

>= 5.0 cm for screeds laid on a separating layer, >= 6.0 cm for floating screeds

>= 7.0 cm in the case of heated screeds laid on a separating layer and with a nominal cover of  >= 55 mm

>= 7.5 cm in the case of heated floating screeds and with a nominal cover of  >= 55 mm

Screed’s nominal thicknesses for the dimensioning at 7.0 kN point load and 10.0 kN/m² area load

>= 2.5 cm for bonded screeds (without steel fibres).
>= 6.5 cm for screeds laid on a separating layer, >= 7.5 cm for floating screeds
>= 8.5 cm in the case of heated screeds laid on a separating layer and with a nominal cover of  >= 70 mm
>= 9.0 cm in the case of heated floating screeds and with a nominal cover of  >= 70 mm

Maximum compressibility of the insulating layer (c) at <= 4 kN point load and <= 5 kN/m² area load

<= 3 mm

Maximum compressibility of the insulating layer (c) at > 4 kN point load and > 5 kN/m² area load and with special floor coverings

<= 2 mm

Compressive strength

>= 35 N/mm² as the average FPC-value (Factory Production Control)

Flexural tensile strength

>= 6 N/mm² as the average FPC-value (Factory Production Control)

Modulus of elasticity (E modulus)

32,000 MN/m² approx.

Apparent density and weight

2,000 kg/m³ approx.

Trafficability

24 hours after ending the trowelling operation (pedestrian traffic).

Drying time

<= 2 CM – % (standard CM-moisture test), usually reached in 7 days after laying the screed in the case that it is < 50 mm thick (without floor heating), at an ambient temperature of 18° to 20° C, at relative air humidity of = 65 % and with correct ventilation.

<= 1.8 CM – % (standard CM-moisture test), in the case of floor heating of Building Type A, usually reached in 14 days after laying the screed in the case that it is < 70 mm thick, at an ambient temperature of 18°C to 20° C, at relative air humidity of = 65 % and with correct ventilation, as well as by complying with the following heating record.

Floor coverings

Suitable for all standard floor coverings as well as for stone coverings and ceramic coverings with tiles up to 40 cm long max. Please consult our applications engineering advisors at info@renoscreed.com in the case of special floor coverings as well as stone coverings and ceramic coverings with tiles > 40 cm long.

Heatable

After 72 hours; 10 days of heating and cooling operation (instead of functional heating). >>> download the heating profile as PDF data file

Reinforcement

By means of steel fibres (RenoScreed® Steel Fibres) that conform to the system.

Water vapour diffusion coefficient

15/35 µ approx.

Thermal conductivity

2.73 W/mxK approx. (volumetrically calculated value: this can differ according to the mixture; heat conductivity of the steel fibre = 50 [W/mxK]; heat conductivity of the cementitious screed = 1.4 [W/mxK]. A batch with 194.41 litre of cementitious mortar combined with 5.5 litres of steel fibres can achieve a calculated thermal conductivity of 2.73).

Admixture

RenoScreed® AdMixture

Reaction to fire classification according to DIN EN 13 501-1

Expert’s Report on fire resistance rating – traduction from the German report

Shrinkage coefficient

– 0.40 mm/m approx. after 70 days.

Surface tensile strength

1.2 N/mm² approx.

Intellectual property right

The intellectual property right is registered with the German Patent and Trademark Office.

Trademark protection

The trademark no. 30634512 is protected by a certificate.

Sales, marketing and distribution

Glass AG, of Feldkirch, Germany.

RenoScreed® July 2014