Durabit Reo a water based, polymer emulsion waterproofing membrane which incorporates micro fibres thereby internally reinforcing the product. 
It is a modified Durabit EF membrane with the addition of the micro reinforcing fibres. It meets the criteria of AS4858:2004 Wet Area Membranes. 
It is an elastomeric, environmentally friendly membrane designed for both internal and (non-exposed) external application. It cures to form a durable, odourless, impervious, seamless membrane that resists re-emulsifying after it has fully even if immersed in water. It is available in white, black, grey and blue,minimum quantities apply, does not stain grout or tiles and has excellent resistance to hydrostatic pressure.
 
Being internally reinforced, the need for external reinforcing is eliminated thereby making it easier and quicker to use.

    

Uses   

 

It has been formulated for most waterproofing applications requiring long term waterproofing making it ideal for:
Shower Recesses & wet areas,
Decks
Terraces, balconies, podiums, roofs (tiled or topped).
Retaining walls
Planter boxes.
Tanks and immersed conditions.

 

Suitable Surfaces   

 

It is suitable for suitably primed: Concrete, cement, cement render, block work, brick, masonry, FC sheeting and CFC sheeting, plaster board and timber, plywood and particle board (if primed which Primeseal MC) and metal (if primed with a metal primer). 

Note: We do not regard particle board as a suitable substrate for wet areas and if possible should be replaced or covered with CFC sheeting - particularly in shower recesses. If covered we recommend that the particle board be coated with 2 coats of Primeseal MC and joins and corners sealed with a polyurethane sealant prior to laying the CFC sheeting.

It may be applied to slightly damp surfaces but the product will not fully cure is the surface remains damp. This process takes longer than if the surface was allowed to dry before application. The surface must dry before the membrane can dry. Freedom from surface water, continual dampness is essential  .

    

Specification   

 

The information contained in this product data sheet is typical but does not constitute a full specification as conditions and specific requirements may vary from project to project. The instructions should be considered as a minimum requirement but the applicator or contractor must use their skill, knowledge and experience to carry out additional works as may be necessary to meet the requirements of the project. Specification for specific projects should be sought from the Company in writing.

 

Limitations

 

It is not designed for long term direct exposure to UV and should be tiled, topped or painted. It is not designed as a trafficable membrane although infrequent maintenance foot-traffic would be acceptable.

    

Benefits and Advantages   

 

It is a versatile membrane suitable for many demanding waterproofing   

 

It meets the criteria of AS4858:2004 and is applied in accordance with AS3740.
Not a hazardous product and not flammable. Water based.
Contains micro fibres (internally reinforced) eliminating the need to use external reinforcing.
Permanently flexible but not as flexible as Durabit EF.
Suitable for contact with drinking water.
Formulated for wet area and under tile applications.
Does not re-emulsify after proper curing.
Tough, durable and flexible.
Dries fast.
Compatible with most tile adhesives.
Easy to apply.
Virtually odourless.
Will not stain grout or tiles.
Available in range of colours.   

 

Precautions in Use   

 

The product is considered safe to use if used correctly, as intended and proper industrial hygiene and practices are used. Always observe safety precautions.   

Priming and Surface Preparation   

Good preparation is essential. Surfaces must be sound, stable, dry, clean and free of dust, loose, flaking, friable material and substances that may diminish adhesion.   

    

Priming   

Surfaces should be suitably primed with Primeseal MC applied at no less than 1 litre per 4m2 and allowed to dry. Primeseal MC must be used for roof and exposed areas, timber and particle board surfaces, bitumen or where there is a risk of entrapped moisture in the substrate which may cause the membrane to bubble.
Priming is ad equate if the surface has a solid off-white appearance. Particle board and bitumen surfaces should primed with 2 coats of Primeseal MC.
Alternative primers such as WB Primer. may be used in non-exposed areas and where the moisture content of the surface is very low applied at no less than 1 litre per 4 m2.
Excessively porous, friable and dusty surfaces may require an additional priming coat.   

Please refer to the product data sheets of the stated primers.   

 

Detailing Preparation   

 

Corners   

Prime as required.
Apply an adequate flexible polyurethane sealant, in accordance the manufacture's instruction and tool off to form a solid, coved or 45  degree  fillet extending at least 10mm on to the adjacent surfaces. Apply the membrane directly over the sealant and on the adjacent surfaces.
For Additional waterproofing protection the following additional steps should be taken
Lay a strip of Wrimco Flashing tape (stick-stick, butyl mastic waterproofing membrane with a polyester backed reinforcing fabric) over the cured polyurethane sealant (as described above) pressing it firmly on the surface. Apply the membrane directly over the tape and on the adjacent surfaces.   

Joins, Gaps and Cracks   

General   

Joins, gaps and cracks should be suitably filled and sealed with an appropriate elastomeric sealant, preferably a polyurethane sealant, and allowed to cure. 
Recommendation: The movement of small cracks should not be underestimated and should be at least covered with a flexible polyurethane sealant or additional coats of membrane.   

Large or Live Cracks   

Large cracks should be routed out to form a 'V' and then filled and sealed with a polyurethane waterproof joint sealant as per the manufacturer's instructions. The sealant should be finished slightly proud of the surface and allowed to cure. 
After priming, as required, lay a strip of Wrimco Flashing tape over the join or crack pressing it firmly on to the substrate. The membrane is then applied directly to the Leak-Seal Tape and extending at least 75mm on to the adjacent surfaces.   

If the Leak-Seal is not used then a suitable bond breaker tape (such as duct tape) at least 48mm wide should be laid over the join or crack and apply 3 coats of Durabit Reo extending at least 75mm on to the adjacent surfaces.   

 

Joins - Particularly in CFC Sheeting and Timber Sheeting   

Ideally the sides of the sheets should be fully coated with a flexible polyurethane waterproof joint sealant prior to butting the sheets together.
If not, the joins should be suitably filled and sealed with an appropriate elastomeric polyurethane waterproof sealant and finished flush with or preferably slightly proud of the surface and allowed to cure. 
After priming, as required, lay a strip of Leak-Seal Tape over the join, pressing it firmly on to the substrate. The membrane is then as described under 'Large or Live Cracks'.
If the Leak-Seal is not used then follow the procedure as described under 'Large or Live Cracks'.   

Waste Outlets, Penetrations and Angles
Waste Outlets: Floor wastes and puddle flanges should be rebated in to the floor to allow water to readily drain. Gaps and perimeters should be sealed with a polyurethane sealant.
Plastic or metal angles: Where required by the Building Code such as internal hobs and exterior door barriers and also plastic corner angels under wall boards, they should be securely embedded in to a continuous, gap free bed of a polyurethane sealant / mastic.   

 

Application   

 

Stir well. Apply by brush, roller, soft broom or spray.
Apply in a minimum of two coats. To perform correctly the dry film thickness of the membrane must be at least 1mm to 1.2 mm.
Durabit Reo is suitable for use with a reinforcing fabric or Wrimco Flashing tape.   

    

Coverage   

 

The stated average coverage rate may vary depending upon type, condition, porosity, texture of the surface and application technique.   

    

Unreinforced: Minimum 1.5 litres per sq.m., i.e 0.75 litres per m2. per coat. A 15 litre pail will cover 10 sq.m. for 2 coats.
Reinforced: Minimum: 2.0 litres per m2.
The dry film thickness of the membrane must be at least 1mm.
Primers
Minimum 1 litre per 4m2.   

 

Colours   

 

It is available in Grey &  Blue. Special colours available upon request but minimum orders will apply.   

Drying and Curing   

Drying and curing of the product is affected by type, dryness and porosity of the surface, temperature, humidity, ventilation, climate conditions and application technique and therefore drying and curing can only be given as a guide.   

    

It is a fast drying water based product. Expected curing at 25o C at 50% RH: Touch dry - 4 to 6 hours per coat. Set - 12 hours. Full cure 36 to 72 hours. Ensure membrane is fully cured before tiling or topping.   

 

Storage   

 

Store in cool, dry area. Product is not flammable. Do not allow to freeze. Shelf life - about 12 months. Available in 4  & 15 Lt pails.   

Clean Up   

Wet spills can be cleaned with water, but spills should be avoided.   

Tiling, Topping or Top Coating   

It is compatible with most tile adhesives and 3:1 sand:cement beds.
Ideally the beds should be sealed / waterproofed to prevent the bed absorbing and holding water. Selection of the tile adhesive should be compatible with the flexibility of the substrate. Two pack adhesives systems are preferred. Tiling must be done in accordance with AS3958.1-1991 and adequate expansions joints installed.   

 

Safety & Precautions   

 

It is user friendly and safe to use if used correctly as intended. Nevertheless, protect eyes and skin and observe the safety precautions on the can and data sheet.   

    

For full safety data refer to the products Material Safety Data Sheet. Observe precautions as per label.   

 

Tests and Technical Data   

 

It complies with AS4858:2004 Wet Area Membranes as tested by the CSIRO Test Report 2947 with a Class III High Extensibility classification. It complies with AS/NZ 4020:2002 Contact With Drinking Water.   

    

Moisture Vapour Transmission: 0.26 g/sq.m./24 hours   

Tensile Bond: 2N/mm after 14 days   

Application temperature range: 10 to 35o C   

Elongation: > 300% (Class 111 Extensibility)