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Damp Proof Coating  :   


 
 
DuroWBE:  Two Pack Water Based Epoxy Primer / Coating
 

 

It is a two component waterbased epoxy priming used to seal concrete and masonry surfaces. lt cures to a tough chemical and water resistant coating having excellent adhesion to sound concrete. 
 
PRINCIPLE CHARACTERISTICS
  

Waterbased, user friendly

Environment Friendly 

Excellent water resistance

Excellent adhesion to fresh concrete

Excellent adhesion and penetration to damp surfaces and "GREEN" concrete

Excellent oil resistance.

 

USE AREAS
  

Primer for damp surfaces   

Moisture barrier on damp walls/floors   

Sealing concrete slabs before vinyl and timber overlays   

Primer for acrylic & polyurethane membranes   

Dust sealing concrete floors   

Concrete curing membrane          
  
GENERAL    
 

Colour   

Grey, White, Black, Clear, matt finish   

Pot Life   

1 hours @20   

Mix Ratio   

Pigmented -1:1- A:B by volume; clear 1:2- A:B by volume   

Re-coat   

4-5 hours at 20  C, 50% RH   

Full Cure   

5-7 days at 20  C, 50% RH   

Coverage   

4-8m2/litre/coat   

Shelf life   

12 Months  in unopened containers @ 20  C   

Solids Content   

50% by volume   

Storage   

Above 5  C   

Clean Up   

Wash all equipment in water and or detergent immediately on completion. W-WBE will cure under water, hence do not leave items soaking.   

 

PACKAGING (Grey, White, Black)                   PACKAGING (Clear)   

20 Litre (10 Litre A : 10 Litre B)                    30 Litre (10 Litre A : 20 Litre B)

8 Litre (4 Litre A : 4 Litre B)                         12 Litre (4 Litre A : 8 Litre B)

 

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 may require 3 coats of DuroWBE  then join the two components, 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. DuroWBE is a minimum two-coat system. Applying with a brush or roller, 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.   

 

PRECAUTIONS   

 

Refer to MSDS prior to use.  DuroWBE cure rates will be dramatically slowed if the relative humidity is above 85%. Do not apply to steel or metal surfaces, as corrosion will occur. Do not add cementitious products to 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   C/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 U.V. resistant top coat. Discard any material that 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.   It is rigid when cured and will not absorb movement cracks.   

 

COLD SUBSTRATES AND COOL CLIMATIC CONDITIONS   

 

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 and possibly cause an amine blush. Cure rates will be dramatically slowed if substrate surface or ambient temperature is below +10  C. 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. Ensure removal of the contamination prior to application of any further coating to ensure adhesion of the next coat. Before recoating,   it should be allowed to cure, then washed with clean, fresh water, Methylated Spirits or Xylene depending on the severity. Store   it in a 20  C environment 24 hours prior to use. If possible warm substrate surface area by an air blower or use a blower after application. Always provide adequate ventilation during the drying cycle.       

 

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