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Damp Proof Epoxy Coating:
 
 
 
DuroHibuild WBE
 
is a two component water based epoxy coating used  to prime seal, coat concrete and masonry surfaces. It cures to a tough chemical  and water resistant coating having excellent adhesion to sound concrete. 
 
Packaging: 20 litre, 4 litre
 
PRINCIPLE CHARACTERISTICS   

 

Water based, user friendly   

Low odour
Damp Proof
Environmentally friendly      

Excellent water resistance   

Excellent oil resistance.   

Excellent adhesion to fresh concrete   

Applicable to damp surfaces   

Resists hydrostatic pressure when cured

 

Requires a UV resistant top coat when in direct sunlight   

 

USE AREAS   

 

Fish ponds   

Retaining walls   

Reverse tanking   

Primer for acrylic & polyurethane membrane   

Dust sealing concrete floors   

Waterproofing concrete slabs before vinyl and timber overlays   

Concrete curing membrane   

Moisture barrier on damp walls/floors   

 

GENERAL
     
Shelf Life: 12 months  in unopened containers stored above 5 C and below 20  C

Pot Life: 1.5 hours at 20 C   

Touch Dry: 4 - 5 hours at 20 C,  50% RH
Recoat time: 5 hours at 20 C,  50% RH   
 
Full cure: 5 days at 20 C,   50% RH
Coverage:  Min 2 coats, each at 0.3 Litres/m2 [3m2/Litre]

Weather Resistance: Good   

Colour (Mixed): Grey, matt finish

Mix Ratio: 1:1 by volume
Wet film per coat: 0.3mm thick    

Storage: Above 5 C and below 20 C    

Clean Up: Clean equipment with water before setting commences   

 

 

SURFACE PREPARATION
 
All surfaces must be structurally sound and all previous coatings, adhesives, efflorescence or laitance should be removed by chipping, abrasive blast cleaning, high pressure water washing, mechanical scrubbing or other suitable means. All surfaces must be cleaned free from dirt, grease oil or other surface contaminants. Holes, non-structural cracks and other surface deformities should be repaired.
 
APPLICATION

 

Porous concrete will require 3 coats of DuroHibuild WBE. The first acting as a primer, should be diluted 10% with water to allow penetration into the pores of the concrete. Then apply 2 full coats. Mixing should be by means of a mechanical forced action mixer with a high shear stirrer. Premix each individual component then join the two components, by equal volume, mixing thoroughly for a minimum of 5 minutes until a blended coating is obtained. Avoid trapping air during mixing as this may cause pin holing. Only mix as much as may be used within the pot life of the product. It is a minimum two-coat system. Apply with a brush or roller, and ensure to work the material into the substrate surface to fill voids and eliminate pin holing. Successive coats should be applied at right angles to the previous coat. It is recommended that the coating depth be tested at random points with a wet film gauge. 
 

CLEAN UP   

 

Wash all equipment in water and or detergent immediately on completion.   

It will cure under water, hence do not leave items soaking.
 

PRECAUTIONS   

 

Refer to MSDS prior to use. It's cure rates will be dramatically reduced if the relative humidity is above 85%. Do not apply to steel or metal surfaces. Do not add cementitious products to DuroHibuild WBE. It is not a waterproof membrane on its own. A dedicated waterproofing membrane should be used. In enclosed areas, such as water tanks or reservoirs, basements, or cubicles, ventilation should be provided to enable adequate evaporation of the coating. Allow to cure for a minimum of 24hours at 25  oC/50% RH before applying waterproof membranes, adhesives, mortars, decorative coatings or other surface treatments. It will tend to chalk when exposed to UV light. For external use apply a UV resistant top coat. Discard any materialthat has exceeded the pot life or working time of the product. Do not apply over any substrates that have been previously treated or coated with curing compounds, PVA concrete bonding agents or acrylic coatings. These areas must be mechanically cleaned by grinding or shot blasting to produce a contamination free surface.   

 

COLD SUBSTRATES AND COOL CLIMATIC CONDITIONS   

 

Cure speed will be dramatically reduced if substrate surface or ambient temperature is below +10  oC. If it is applied in cooler climatic conditions, substrate temperatures can produce amine blush, resulting in an oily residue and or areas of uncured tacky discolorations. It should be allowed to cure, then washed with clean, fresh water, Meythylated Spirits or Xylene depending on the severity. Ensure removal of the contamination prior to application of any further coating to ensure no delamination. Follow mixing instructions and allow an extra minute to ensure a homogeneous paste is obtained. Allow to stand for 5 minutes after mixing as this will accelerate the drying time. Never apply thin coats as the rapid moisture loss will arrest or slow the drying reaction. Thin coats can also cause an amine blush. Store it in a 20 C environment 24 hours prior to use. If possible warm the substrate surface area by an air blower or use a blower after application. Always provide adequate ventilation during the curing cycle.

 

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