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Emer Clad Acrylic Liquid Membrane:


 
Acrylic, flexible waterproofing membrane, for internal and UV exposed external areas - colour range available.    
 
Uses    
 
As a sunlight exposed waterproofing membrane for decks, balconies, roofs, and gutters. On roofs and balconies, Emer-Clad provides a durable, slip resistant, waterproof finish which will accept regular foot traffic. Emer-Clad is suitable for application to many common substrates including concrete, fibrous cement products, metals, timber with priming required on most substrates.    
Advantages    
 
Proven track record for over 20 years    
Water borne acrylic formulation    
Easy water clean up    
One component - readily applied direct from pail    
Excellent resistance to UV, weathering, chloride ions and CO   2    
Excellent build properties enable application to both horizontal and vertical surfaces    
Can be applied to a wide range of substrates    
Available in a select range of standard colours - can be tinted to over 800 colours    
Highly flexible - accommodates movement and minor cracking of substrates    
Excellent resistance to embrittlement    
Contains additives to inhibit growth of mould and bacteria    
Can be applied over existing hairline cracks and    
capable of accepting live crack movement of up to 1 mm    
 
Description    
 
Emer-Clad is a single component water borne, high solids, acrylic copolymer waterproof membrane which offers excellent sunlight and UV resistance. Emer-Clad may be applied over a wide range of construction materials by brush, roller or airless spray, when used in combination with the appropriate primer.    
 
Design criteria    
 
In waterproofing applications, Emer-Clad is designed to be applied by brush, roller or airless spray over the appropriate primer, to achieve a total dry film thickness of not less than 500 microns in three or more coats.    
 
Maintenance    
 
No special requirements, any damage identified during normal inspections should be repaired or replaced as appropriate.    
 
Specification clauses    
 
Roofs and decks    
 
Where so designated on the drawings surfaces shall be waterproofed with a high performance, UV resistant, acrylic high build waterproofing membrane. The membrane may be reinforced with a non-woven polyester fabric, if required, and applied with a minimum 3 coats to achieve a total minimum dry film thickness of 500 microns. The high build acrylic membrane shall be Emer-Clad. All surfaces shall be prepared, primed and the membrane applied in accordance with the current Emer-Clad Technical Data Sheet.    
 
Properties    
 
Primary colour range    
white, light grey, mid grey, sandstone, cream    
Volume solids    
53% (Matt white)    
45% (Satin white)    
Physical or chemical change    
Dries through loss of water    
Drying (25   o   C, 50% RH)    
Tack free: 30 minutes    
Recoat: 2 hours    
Fully dried: 7 days    
Application temp    
10   o   C - 30   o   C    
Carbon dioxide   transmission (Klopfer   criterion R>50m)    
Matt R = 266m    
Satin R = 266m    
Water vapour diffusion    
resistance (Klopfer criterion S   D < 4 m)    
Matt SD = 1.65 m    
Satin SD = 1.25 m    
Water permeability    
AS TM E514-7A    
Class E    
Highest resistance to water Penetration    
Exterior durability results    
on FC panels (GPC):    
Cape   Shank   (Coastal) 239 months    
Yallourn (Industrial) 189 months Port Melbourne (Industrial) 210 months    
Darwin   (Tropical) 233 months    
No integrity failure on any of the panels at all the above    
sites - GPC Scientific Services Laboratory    
Acoustic dampening Properties    
500 micron sample of Emer-Clad on Lysaght "Custom Orb" 26 gauge thickness corrugated steel sheet    
Effective noise reduction    
2 - 7 dB    
Chemical resistance    
Emer-Clad is unaffected by a range of mild acids, alkalis, and is resistant to bio-deterioration    
 
Application instructions - Surface preparation    
 
All surfaces to be coated are to be clean, sound and dry, free of mould release agents, bond breaking coatings, curing compounds or any other contamination that may affect coating. New concrete and rendered surfaces to be allowed to cure thoroughly before application of any materials. Concrete surfaces should be smooth, any imperfections, pinholes etc. to be filled and surfaces made smooth with Emer-Patch (smooth) and towelled to an even finish.    
 
Moss or lichen should be removed physically, and the surface then treated with a solution of household bleach (1 part bleach to 2 - 3 parts water) to kill any spores. The bleach solution to be allowed to react for 10 - 15 minutes and then be completely removed with clean water and the surface allowed to dry. Where Emer-Clad is to be applied to an exposed deck, the moisture content of the substrate must be checked using a moisture meter. Emer-Clad should not be applied to substrates having a moisture content greater than 80% RH.    
 
Priming    
 
Emer-Coat Clear Sealer, a solvent borne penetrating sealer must be used on concrete, masonry, rendered or other cementitious surfaces as well as fibre cement sheeting and previously painted surfaces etc. Emer-Aquashield, a water borne epoxy coating can sometimes be used for suspect damp substrates.    
 
Movement joints    
 
Ideally, Emer-Clad should not be applied over movement joints as the amount of movement may be more than the capability of the membrane. Joints should be first sealed with the appropriate joint sealant then the Emer-Clad applied up to the edge of the joint. When this is not practical, all expansion and movement joints should be sealed with a suitable elastomeric joint sealant such as Emer-Seal PU 25 and allowed to cure. Once cured, the sealant surface must be covered with a strip of polyethylene bond breaker tape. In all applications where Emer-Clad is applied over movement joints or at floor to wall junctions, Emer-Clad must be reinforced with a suitable polyester fabric such as Sontara. The reinforcing fabric must extend at least 100 mm either side of the joint.    
 
Glass fibre reinforcing must not be used as glass fibres reduce the elasticity of the membrane and are difficult to wet through. Glass fibre mat reinforcing has been shown to create a weak delamination layer in the membrane and glass fibres that are not fully encapsulated with Emer-Clad have been shown to cause a 'wicking' effect allowing water to pass through the membrane.    
 
Application    
 
Emer-Clad may be applied by brush, roller or airless spray. Application of Emer-Clad by airless spray is best achieved using a 3000 psi line pressure and a 19 - 21 thou' spray tip which gives an ideal product spread via a 25 cm spray fan. When used in waterproofing applications, Emer-Clad must always be applied with a minimum of three coats to achieve minimum total DFT (dry film thickness) of 500 microns. On exposed decks where a satin finish is required, it is advisable to apply at least 2 coats of matt followed by at least one coat of satin.   Emer-Clad must never be diluted with water   as this will lead to a reduction in dry film thickness as well as the creation of micro foam when water is mixed into the product.    
 
Emer-Clad can be applied in 2 ways, either fabric reinforced or unreinforced. When applying Emer-Clad to decks where reinforcing is not required, apply at least 3 coats of Emer-Clad at a WFT (wet film thickness) of 350 microns per coat.    
Allow 2-4 hours drying time between each coat. At low temperatures, high humidities or in confined spaces, longer drying times may be required. Where Emer-Clad is to be applied with reinforcing, apply 350 microns of Emer-Clad onto the substrate and immediately apply the pre-cut to size, Sontara or Reemay fabric, onto the fresh wet surface of the Emer-Clad already applied. Position the fabric carefully so as not to create wrinkles or entrap air. Immediately, apply another 350 micron WFT layer of Emer-Clad over the fabric, wet on wet, so as to encapsulate the polyester reinforcing fabric. Always work in one direction making sure to fully wet through the fabric and exclude any trapped air as the application    
progresses.    
 
Care must be taken to make sure that application of the first wet laid does not get too far ahead of the fabric, and that the fabric is not laid too far ahead of the 2nd wet layer. Under normal weather conditions, work about 1 metre at a time applying the membrane, fabric and membrane, wet on wet before moving on. In direct sunlight or in hot conditions, the drying rate of Emer-Clad will be very fast. If possible, avoid applying Emer-Clad at the hottest part of the day, or work in pairs to ensure that the fabric application follows immediately behind the 1st wet layer to ensure that the 2nd layer is applied 'wet on wet'. Do not attempt to add water to Emer-Clad in order to extend the working life of the product. This will only lead to a reduction in film thickness and the creation of micro foam. Allow the fabric reinforced layer to dry overnight before applying at least 2 more coats with a minimum WFT of 350 microns per coat. Allow 2-4 hours drying time between each coat. When applied with reinforcing, the total system must achieve a minimum DFT (dry film thickness) of 500 microns. Once all coats have been applied, allow the membrane to dry for a minimum of 7 days before application of cement based screeds or other finishes. Longer drying times may be required in cold or humid climates. Do not apply Emer-Clad outdoors if there is any likelihood of rain within 6 hours after the completion of that days    
 
application.    
 
Cleaning    
 
Tools and equipment should be cleaned with water immediately after use.    
 
Limitations    
     
Do not apply to uncured concrete or while rain threatens, or at temperatures below or which may fall below 10oC. Emer-Clad is not recommended for surfaces subjected to hydrostatic pressure. Emer-Clad is not suitable for traffic areas subject to heavy foot or vehicle. Emer-Clad must not be applied over substrates having a high moisture content. Light colours are preferred in deck applications as dark colours absorb too much heat and increase the risk of blistering due to trapped moisture. Emer-Clad must not be used in applications where it will be immersed in water for extended periods. Unsuitable applications include, water tanks, planter boxes, roof gardens, fountains, fish ponds and areas subject to long term water ponding. Emer-Clad should not be tiled over unless allowed to dry for 7 days.    
 
Estimating    
 
The coverage figures are theoretical - due to wastage factors and the variety in nature of possible substrates, practical coverage figures may vary accordingly.    
 
Supply    
 
Emer-Clad:   4 and 15 litre pail    
Emer-Aquashield:   2, 4 and 20 litre pails    
Emer-Coat Clear Sealer:   1, 4 and 20 litre pails    
Emer-Patch Smooth:   15 litre pail    
 
Coverage    
 
Emer-Clad:   3 m2/litre/coat    
Emer-Aquashield:   6 m2/litre/coat    
Emer-Coat Clear Sealer:   7 m2/litre/coat    
Emer-Patch Smooth:   5 m2 @ 3 mm thick / 15 litre    
The coverage figures are theoretical due to variable wastage factors including the variety and nature of possible substrates, hence practical coverage figures may vary accordingly.    
 
Storage    
 
Shelf life -   All products have a shelf life of 12 months if kept in a dry, cool storage area.    
 
Storage Conditions    
 
Store in dry conditions at temperatures between 5oC and 30oC in the original, unopened containers. If stored at high temperatures, the shelf life may be reduced.

 

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