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It is a solvent based, mineral reinforced bituminous compound
formulated to provide a heavy-duty waterproof / protective coating for use on exposed surfaces above and below ground. It is liquid applied and cures to tough, flexible lining that has an excellent resistance to water, chemical and weathering.
It has been developed through long research and proven over many years to be a highly successful weatherproof coating for the repair and / or
protection of steel roofing and concrete and metal structure in aggressive atmospheric conditions.
New and rusted metal roofs
Box gutters
Water tanks
Retaining walls
Planter boxes
Concrete rendering
Floors and surfaces subject to chemical attack
Easy to apply by brush, roller or spray
Fast drying, early water resistance
Excellent chemical and water resistance
Single component liquid - application
time reduced
Prolongs roof life
Sound deadening roof coating-noticeably reduces noise level inside building
Flexible-will not crack and cause leakage with normal substrate movement
Excellent adhesion to base substrate without the use of specialised primers
Seamless-no joins or cracks at which breakdown may occur
Weather Resistance
Very good. Surface will chalk slightly with exposure. For improved UV protection, top coat with acrylic or aluminium paint.
Dry Time
Touch dry 1/2 hour @ 25C
Recoat Time
4-6 hours @ 25C
Metal 0.25 - 0.125 Litre/m2 [ 4-8m2 / Ltr ]
Porous 0.3 - 0.25 Litre/m2 [3-4m2 / Ltr ]
Wet Film Thickness
Metal 1.25 - 2.50mm
Wet Film Thickness
Porous 2.50 - 3.0mm
Solids Content
52% by volume
Shelf Life
12 months in unopened containers stored
at @ 20C
All surfaces must be sound, clean, thoroughly dry and free of contaminants such as oil, grease, loose material etc.
Concrete and masonry surfaces For maximum adhesion, surfaces laitance should be removed by water or grit blasting, wire brushing or acid etching (4:1 water: hydrochloric acid). If acid etching is used, thoroughly rinse with fresh water and allow to dry before application. Bond strength is increased by priming with DuroAR SEALER.
Metal surfaces, roofs etc. Allow new galvanize to weather approximately three
months or alternatively apply a degreasing etching solution. If corroded, remove all loose material, scale and apply gal primer or DuroAR SEALER at an
application rate of 4m²/Litre to rusted areas.
Timber, particle board etc. Ensure all joints are fully supported and all fixings
recessed 1mm. Apply sealant to all joints, corners and over fixings.
DuroBL can be applied by brush, roller or airless spray.
If cracks or holes are present, apply thick coating DuroBL to these areas,
then embed into it chopped strand fibreglass mat, and apply a further coat of DuroBL. Using a paint roller or airless spray unit, apply DuroBL to prepared surface, at an application rate of 4m2/Litre. Allow to dry approximately 4-6 hours. Apply DuroBL second coat at an application rate of 4m2/Litre, taking care to ensure that all surfaces are fully covered. Allow to dry approximately 24 hours.
Clean tools and equipment with turps before hardening commences. Remove cured material using turps.
DuroBL is available in 20 litres.
Follow normal coating procedures, wear protective clothing where necessary. Provide adequate ventilation if applied in confined spaces. Avoid contact with skin and avoid breathing vapour. Keep out of reach of children. If swallowed contact a doctor or Poisons Information Centre. Refer to DuroBL MSDS prior to use.   



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