Cemflow
RENOVATION

FIBRE REINFORCED BASE SCREED

Advantages:

Deep Section:
Thickness from 5 - 50mm in one application
Fast Drying Technology:
Foot Traffic in 3 hours, Light Traffic in 1 day
Low Odour & Protein Free:
Suiable for Use in Biologically Sensitive Areas

Description:

Cemflow Renovation is designed as a pump or hand applied levelling base screed for use under most finished floor coverings or resin based materials, where thicker applications are required when upgrading and renovating new and existing internal floors.

Usage

Cemflow Renovation is supplied as a pre-blended dry powder designed for application between 5 and 50 mm in one application, to provide a sound base.

Cemflow Renovation is self - smoothing, dimensionally stable and fast drying. It is suitable for use in a wide range of industrial environments such as warehouses, food processing plants etc.

Typically Cemflow Renovation can be pumped up to 1000 m² per day, alternatively a coverage of 400 m² can be achieved when hand applied, dependent upon manpower, thickness applied and equipment used.

Cemflow Renovation is not designed as a wearing surface and should be covered with finished floor coverings, e.g vinyl laminate, tiles and carpets, etc.

Materials Supplied

25 kg paper sacks.

Coverage

A 25kg bag using 4.25 litres of clean water will yield
approx. 13.8 litres.

A 25kg pack of Cemflow Renovation will cover approximately 1.4 m² at 10mm thickness.

Storage

Protect from frost and store under dry warehouse conditions at a temperature between 10 °C and 30 °C.

Shelf Life

6 months in unopened bags and stored under good conditions.

Technical Information

EN 13813 Designation	CT-C30-F7
Working time @ 20°C	20 – 30 minutes
Vicat setting time @ 20°C	3 hours
Foot traffic Light traffic	3 hours 24 hours
Compressive Strength (N/mm²) EN 13892-2 1 day 7 days 28 days	> 15.0 > 25.0 > 30.0
Flexural Strength (N/mm²) EN 13892-2 1 day 7 days 28 days	> 2.0 > 5.0 > 7.0
Flow properties using 30mm ø x 50mm flow ring (EN 12706)	110 – 130mm
Consumption per mm thickness	1.814 kg/m²
Application thickness	5 - 50 mm

Application Instructions

SURFACE PREPARATION

Concrete and sand / cement screeds must be sound, dry and fully cured (not subject to shrinkage) and any laitance or surface treatments must be removed by mechanical means such as grit blasting. The surface tensile strength of the substrate should be a minimum 1.5 N/mm².

The concrete substrate should be below 75% RH, alternatively Strongcoat DPM should be applied. The temperature of the floor must be maintained above 10 °C throughout the application and drying of the Cemflow RENOVATION.

Prior to application on to impervious surfaces the area should be thourougly cleaned and lightly scarified. Any existing surfaces should be well bonded (> 1.5 Nmm²).

The perimeter of the room and any columns should be isolated using a compressible strip.

For application over underfloor heating please contact DCP Technical Department for specific advice.

PRIMING

TO CONCRETE AND CEMENT SCREEDS
For application on to sand / cement screeds, concrete and other porous substrates, first seal the prepared surface by applying one diluted coat of Neoprene PRIMER, diluted one part Neoprene PRIMER with 4 parts potable water by soft broom or brush, and allow to thouroughly dry. Apply a second coat of primer diluted 3:1 by the same method and allow thoroughly to dry. Depending on the porosity of the substrate a further coat may be required. To confirm if this is necessary a small application area should be undertaken to ascertain the correct priming requirements. As an alternative, Strongcoat PRIMER may be used.

PRIMING WITH STRONGCOAT PRIMER
Apply one coat Strongcoat PRIMER and allow to cure. Apply 2nd coat and whilst still tacky fully blind with DCP Coarse Aggregate at approximately 3 kg/m² until the surface is covered and no resin spots remain. The rate of application is approximately 3 kg/m². Allow to dry fully overnight and remove excess aggregate before applying the Cemflow RENOVATION.

TO IMPERVIOUS SURFACES
For application on to impervious surfaces, such as tiles, coatings or onto Strongcoat DPM (please read relevant product technical data sheet). Apply Strongcoat PRIMER and whilst it is still tacky fully blind with DCP Coarse Aggregate at approximately 3 kg/m², until the surface is covered and no resin spots remain. Allow to dry fully overnight and remove excess aggregate before applying the Cemflow RENOVATION.

MIXING

PUMP APPLICATION
Mix the powder and water according to the method recommended by the pump manufacturers. In the case of pumps having a continuous water feed adjust the rate of water flow until the mix is a smooth fluid, uniform grey liquid with no surface separation, producing a flow of approximately 120 mm using a 35 cc flow ring.

To avoid separation, applications greater than 15 mm require less water and therefore a reduced flow.

HAND APPLICATION
Use a power-whisk fitted in a heavy-duty slow speed electric drill. Mix in the proportion of 25 kg of powder to 4.0 - 4.5 litres of potable water. Pour the water into a suitably sized bucket and gradually add the powder while stirring, until a smooth, lump free consistency is achieved. Leave to stand for 2 - 3 minutes and mix briefly for 1 minute before applying.

APPLICATION

Pour or pump the mixed material onto the prepared surface and allow to attain a smooth finish. The use of a spiked roller will help eliminate entrapped air and smooth out flow lines.

Apply at a thickness between of 5 mm to 50 mm in one pass only. Apply floor covering (subject to RH test) over Cemflow Renovation when it is at least 24 hours old. For resin screeds allow at least 72 hours before priming with the appropriate primer.

Where materials are to be applied over the surface of the hardened Cemflow RENOVATION, it is good practice to STR the surface prior to carrying out subsequent treatments.

CLEANING
Wash tools with water immediately after use.

PRECAUTIONS
Do not place when the substrate temperature is below 10 °C or when the ambient temperature is 10 °C and falling. Protect from frost. Do not exceed the maximum recommended water content and only use potable cold water.

This product is not recommended for external use or situations where water may come into direct contact with the cured material.

This product should not be applied to ashpalt or bituminous surfaces.

HEALTH AND SAFETY
Refer to the product Material Safety Data Sheets before using Cemflow RENOVATION.