DCP SCREED BINDER
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Cemflow PRIMER
 

DCP Rapid
SCREED BINDER

RAPID DRYING FLOOR SCREED BINDER
 
Description:

DCP Screed Binder Rapid is a proprietary, fibre reinforced cementitious binder used for creating rapid drying and high strength category A and category B screeds.

Screeds produced with DCP Screed Binder Rapid have a typical drying time of 5 days, considerably faster than traditional sand/cement screeds. DCP Screed Binder Rapid is suitable for use with underfloor heating systems.

Usage

DCP Screed Binder Rapid can be used to create bonded, unbonded and fl oating screeds in internal applications where a rapid return to service or handover is required. 
Typical uses include commercial and residential projects such as schools, supermarkets and offices.

MATERIALS SUPPLIED

20 kg paper sacks.

STORAGE

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

SHELF LIFE

6 months if stored in unopened packaging and stored under proper conditions.

APPLICATION INSTRUCTIONS

BONDED SCREEDS

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.
Concrete substrates should be primed using Neoprene Primer. Another application procedure is by preparing a bonding latex slurry and the application of the mortar while the slurry is still wet.
If there is a concern of negative water pressure, Strongcoat DPM should be applied as a damp proof membrane which is broadcast with a quartz aggregate to form a key for the bonding slurry. The temperature of the floor must be maintained above 10°C throughout the application and drying of the DCP Screed Binder Rapid.
UNBONDED AND FLOATING SCREEDS

Walls and columns must be isolated with suitable separation joints. Substrates and insulation boards should be stable with no lateral movement possible. 

UNDERFLOOR HEATING

When screeding over underfloor heating pipes, a minimum cover of 25mm is required above the pipes. Underfloor heating should be pressurised and commissioned following the manufacturer’s instructions.

VENTILATION

Suitable ventilation is required however ensure doors and windows are sufficiently closed to prevent draughts during application and whilst curing.

MIXING
HAND APPLICATION

DCP Screed Binder Rapid should be mixed with clean, screeding sand to the grading in BS 8204-1. Mix to a damp earth consistency using a forced action mixer. Do not over water and do not add any additives not approved by Don Construction Products.
The recommended Sand:Binder ratio is between 3:1 to 4:1 by weight. The advised used water is in the range of 5 – 6 Liters per 20 kg bag binder.
APPLICATION

DCP Screed Binder Rapid should be placed immediately after mixing. Spread the mixed DCP Screed Binder Rapid in the application area and thoroughly compact. Screeds thicker than 50mm must be laid in two layers (wet on wet) to ensure complete compaction.

HEALTH & SAFETY

Refer to the product Material Safety Data Sheets before using DCP Screed Binder Rapid.



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Don Construction Products Ltd.

Headquarters
Hawthorn House, Helions Bumpstead Road,
Haverhill, Suffolk, CB9 7AA, United Kingdom
Tel: +44 (0) 1440 766360 
Fax: +44 (0) 1440 768897

Email: info@dcp-int.co.uk
Email: stephen.bird@dcp-int.com
Email: tom.emery@dcp-int.com