Hydrobond Screed

HYDROBOND SCREED S.B.R. Polymer Screed

Description

Hydrobond Screed is a polymer based, cementitious screed, comprising primer and trowel applied topping which is designed for areas subject to heavy duty industrial use.

Hydrobond Screed  provides a highly durable continuous floor surface which can be efficiently laid over suitably prepared new or existing floors.  A standard and fast set grade is available.  For specific advice and product information contact Technical Services  0121-520-0888

Typical Uses

Hydrobond Screed is suitable for use in areas subject to regular foot traffic, heavy wheeled traffic and frequent heavy impact.

As Hydrobond Screed is waterproof, it can be used on suspended floors and in basements to prevent water passage.  It has proved very effective for applications in garages, pub cellars, maintenance depots, light industrial factories, engineering workshops, aircraft hangers and locations where lubrication oils and greases are often spilled.

Benefits of Hydrobond Screed

  • Hardwearing, Heavy Duty Screed
  • Slip Resistant and Dustproof
  • Highly Resilient
  • Cost Effective System
  • Resistant To Water, Oil and Frost
  • Greatly Reduces Traffic Noise

 

Properties      
   
Finish Matt Cure Time at 20 °C:
Colours Grey 24 Hours Foot Traffic
Components: 36 Hours Heavy Loads
Primer 2 5 Days Full Service
 Screed 2  
Application Method Trowel Pack Sizes:
Substrate Concrete  Primer Powder (Standard) 10 Kg and 25 Kg Units
Curing Mechanism Hydration  Primer Syrup    (Standard)   5 Kg, 25 Kg & 200 Kg Units
Screed Thickness 12 mm  (Typical)  Screed Powder 25 Kg Unit
  9 mm  (Minimum)  Screed Syrup 10 Kg, 25 Kg & 200 Kg Units
Temperature Flash Points: Not Applicable
Resistance 100 °C Shelf Life: (Stored in Unopened Containers)
Pot Life at 20 °C All Powders   6 Months
        Primer 30 Minutes All Syrups 12 Months
        Screed 30 Minutes  
Coverage  Rate: Physical Strengths      (7 days at 20 °C)
Primer (W/D Epoxy)  0.25 – 0.30 Kg/m² Compressive Strength  37.0 N/mm²
Primer (Standard)  1.00 – 1.50 Kg/m² Tensile Strength    6.0 N/mm²
Screed  37.0 Kg/m² Adhesion to Concrete    5.5 N/mm²
  An allowance should be made Flexural Strength  16.0 N/mm²
  for surface porosity and texture. Modulus of Elasticity 7000 N/mm²
Equipment Cleaner Water  
     

 

Application Instructions

Protect all components from frost during shipment and storage and discard damaged or open containers.  Information on the  Water Dispersible (WD) Epoxy Primer is available on a separate technical datasheet.

Preparation

The concrete surfaces must be thoroughly clean and laitance free when the topping is applied. Very old, badly contaminated floors can be prepared by mechanical scabbling, removing the top 1.5 mm to 3.0 mm of the surface.  Alternatively degreasing crystals, followed by etching with hydrochloric acid solution will often be adequate.  With new concrete, the flooring can be applied as soon as the surface is sufficiently cured to withstand foot traffic, provided all laitance has been removed.

Note: Hydrobond Screed is not suitable for application onto sand/cement screeds, which have no integral strength.

Mixing

Standard Primer Measures are available for the correct proportion of bulk materials on site. One measure (5.0 Kg) of Primer Powder is mixed with one measure (2.5 Kg) of Primer Syrup using a slow speed electric drill and paddle.

Screed – The only measure required is a Syrup measure (5.0 Kg) Syrup should be placed into a suitable mechanical mixer and 2 x 25.0 Kg bags of Powder slowly added to it. The two components are to be mixed for 2 – 3 minutes after the addition of the Powder.   DO NOT OVERMIX.

Application

Standard Primer – Approximately 12 hours before the system is to be applied the substrate should be thoroughly soaked with clean, fresh water. Before priming again soak the substrate with clean, fresh water and remove any standing water.  Apply a generous coating of the mixed primer using either a stiff broom, tar brush or suitable alternative.

Screed – The mixed screed should be applied to the freshly primed surface using 12 mm battens to gauge the thickness and trowelled to the required finish. Trowelling should be carried out with a steel float, kept damp (NOT WET) by dipping in water as screeding progresses.  The finished surface should not be highly polished but possess a degree of slip resistance.  Avoid tearing the surface skin which forms after initial trowelling.

NOTE:  Hydrobond screed must not be applied at temperatures below 5 oC.

Health and Safety

Refer to the Hydrobond Screed Health and Safety Datasheet before using the product.  It is advisable to wear impervious gloves when handling or applying Hydrobond Screed.

It is the purchasers responsibility to ensure that the materials are stored and handled within the meaning of the Health and Safety at Work Act 1974.

Conditions of Sale

All  products are manufactured to high quality standards and sold subject to the company’s standard conditions of sale.  A copy is available upon request.

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HYDROBOND SCREED