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BLACK JACK ALL WEATHER ROOF COATING is a solvent based, full bodied black brushable compound with added fibres for reinforcement. It is specifically designed for overcoating leaking roofs.

Dries to a tough black coating.



  • Fast drying.
  • Unaffected by water immediately after application - can be applied when rain is imminent.
  • Can also be used to bond felt.
  • Brush applied.


Areas For Use

BLACK JACK ALL WEATHER ROOF COATING is an effective, general purpose roof coating.  It is resistant to wash off by rain almost immediately after its application and is therefore ideally suited for winter use. BLACK JACK ALL WEATHER ROOF COATING may be applied by brush to waterproof and re-seal many different types of roof coverings, including:


1.  Asphalt roofs.

2.  Built-up felt roofs.

3.  Concrete roof decks.

4.  Asbestos-Cement sheeting.

5.  Metal sheeting, including iron, steel, zinc and lead.

6.  Slates, tiles.


BLACK JACK ALL WEATHER ROOF COATING may be used in conjunction with a rot-proof hessian reinforcement scrim or bitumen coated glass fibre scrim such as a Glass Membrane.


BLACK JACK ALL WEATHER ROOF COATING may also be used as a Vapour Barrier on walls and roofs.


Surface Preparation

No roof-coating product can be expected to repair an existing roof that is not structurally sound and stable.  Before using a surface coating the roof structure should be inspected and, if necessary, put in order.  All cracked, broken, slipped or missing slates, tiles, sheets or other forms of covering should be replaced or re-fixed and cracks in felt or asphalt filled.  (Safety Recommendation: do not coat roof lights, windows, glass or translucent sheets.  These will constitute a hidden hazard if disguised).


Preparation of the surface is of great importance and will influence the degree of adhesion and life of the renovation.  All roof surfaces to be coated should be sound, stable, clean, i.e. free from loose debris, dirt, dust and grease.  All traces of algae and fungi growth should be removed using a stiff-bristled brush.  Where algae and fungi have been present, remove them completely and treat the surface with EVERBUILD FUNGICIDAL WASH to kill any remaining spores, thereby discouraging the return of the growths.



Note: These instructions follow the recommendations of the National Federation of Roofing Contractors Code of Practice governing the use of Liquid Coatings for Roof Waterproofing - September, 1980.



On asphalt roofs where blisters have occurred, these should be heated with a blow lamp until soft and then smoothed out.  If the asphalt is crumbling or badly cracked, it must be removed and replaced with a polyester based underlay and bonded to the roof deck.


ALL WEATHER ROOF COATING should be applied by brush in 2 coats, the first being allowed to dry before the second is applied.



Remove any loose chipping’s and carry out the preparatory work detailed above.  Minor marks and defects will be effectively filled and covered by the BLACK JACK ALL WEATHER ROOF COATING but where these are wider than 0.75mm they should first be filled with BLACK JACK BITUMEN MASTIC and the mastic allowed to dry.


Blisters in roofing felt should be opened out, cleaned with a stiff-bristled brush and coated with BLACK JACK  ALL WEATHER ROOF COATING at 1.50 square metres per litre. This coating should be allowed to set until it is “tacky” and then the felt should be re-fixed by bonding it down.


In each case, further BLACK JACK ALL WEATHER ROOF COATING and a Glass Membrane should then be applied



Carry out preparatory work.  If the deck is a new one it should be first allowed to cure and then primed using BLACK JACK BITUMEN AND FLASHING PRIMER at 4-6 square metres per litre (rate depending upon porosity).



Carry out preparatory work.  Allow the concrete roof deck and topping screed to cure.  A glass fibre felt underlay should be partially bonded to the surface using BLACK JACK ROOF FELT ADHESIVE.  The felt should be lapped, sealed and adequate ventilation provided for the materials beneath it.  BLACK JACK ALL WEATHER ROOF COATING and a Glass Membrane should then be applied.



Carry out preparatory work.  It is particularly important to ensure that the Asbestos-Cement is not saturated with water before protective coating commences.  Wait until the Asbestos-Cement sheeting is dry and then apply two coats of BLACK JACK ALL WEATHER ROOF COATING each at 1m² per litre, allowing the first coat to dry before application of the second.



Where these show signs of corrosion such as loose rust this should be removed by abrading with a metal-bristled brush.  A rust inhibitive treatment such as Zinc Phosphate Primer should be applied to ensure that the rust would not return.  For normal circumstances, abrading with a brush is usually sufficient preparation.  BLACK JACK ALL WEATHER ROOF COATING should be applied in 2 coats at 1.5 square metres per litre per coat.



Carry out preparatory work.  The roof should be examined for damaged or loose slates or tiles.  Any loose slates or sheets should be re-fixed firmly in place. BLACK JACK ALL WEATHER ROOF COATING and a Glass Membrane should then be applied.



In order to bridge gaps, cracks and fissures and in all cases where roof surfaces are in advanced states of decay, it is recommended that BLACK JACK ALL WEATHER ROOF COATING be used in conjunction with a reinforcing membrane, either rot-proof hessian or, preferably, a Glass Membrane.


Having ensured that the surface is clean and receptive to the coating product, apply a first coat at one square metre per litre.  Immediately apply the Glass Membrane into wet BLACK JACK ALL WEATHER ROOF COATING film, using a brush charged with further ALL WEATHER ROOF COATING.  Ensure that complete contact is achieved and that no air is trapped beneath the membrane.


The Glass Membrane should be lapped by 50 to 75mm and the inside of each lap should be painted with BLACK JACK ALL WEATHER ROOF COATING.  Small gaps and differences in levels should be bridged ensuring that the Glass Membrane is not pulled too tightly across the gap so that any movements in the structure will be accommodated.


At walls and parapets, continue the Glass Membrane and BLACK JACK ALL WEATHER ROOF COATING sandwich vertically for at least 150mm and secure using self-adhesive flashing (150mm width) allowing 75mm to be in contact with the brickwork above.  Apply a second coat of BLACK JACK ALL WEATHER ROOF COATING and allow this to dry.  



It is beneficial to the coating and to the rest of the roof structure to give a final solar reflective finish using BLACK JACK SOLAR REFLECTIVE PAINT An exposed black bituminous surface should be avoided on a pitched or flat roof.  When using BLACK JACK ALL WEATHER ROOF COATING a third and final coat should be preferably applied at 1.5 square metres per litre and, while the film is still “tacky” well blinded with 1 to 20mm (7 to 14 mesh) stone chippings or clean sharp sand.  Alternatively, wait for a minimum of 2 weeks, preferably one month,  then apply a solar reflective coating using  BLACK JACK SOLAR REFLECTIVE PAINT



When insulating material is placed on a flat roof deck it is essential to prevent condensation water vapour from entering the insulation.  If this is allowed to happen it can damage the insulation.  Two coats of BLACK JACK ALL WEATHER ROOF COATING, the first applied at one square meter per litre, the second at 1.5 square metres per litre, will help prevent this.  The BLACK JACK ALL WEATHER ROOF COATING should be applied to the “warm side”, care being taken to avoid pin holes and imperfections in the coating.  When dry, the insulation may be applied over it.


Specific Data



Type Of Solvent

White spirits



Specific Gravity @ 20°C



1.25m² per litre per coat depending on porosity of substrate. Two coats give a dried film of approximately 0.9mm

Drying Time

24 hours depending on drying conditions. Allow 24 hours between coats.

Service Temps

-10 to +85°C

Application Temps

5 to 50°C. Surfaces must be free from ice and water

Fire Resistance

Wet product is flammable, dry film will burn

Heat Flow Resistance

The cured film will not sag or flow under normal conditions

Chemical And Water Resistance

Resistant to: most salt solutions, dilute acids and alkalis, water

Not Resistant to: oils, solvents and some detergent solutions/glass cleaning solutions.



Health & Safety

Consult MSDS for full list of hazards.



BLACK JACK ALL WEATHER ROOF COATING contains a flammable solvent, and all normal precautions against fire must be taken during both storage and use.  Store in original container in cool dry conditions.  Keep away from sources of ignition.


Shelf Life

Storage life 24 months in tightly sealed undamaged containers.

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