Usage Instructions

BULLDOGSEAL is a highly effective waterproofing compound that contains special fibres to ensure bridging properties without use of re-enforcing membranes.
The binder in BULLDOGSEAL is a highly flexible acrylic compound that has been proven for its weather and water resistance over a number of years.
On non-porous surfaces, e.g. corrugated metal roofs, BULLDOGSEAL is applied as a one step system normally by means of a brush. On porous surfaces, e.g. concrete, it is advisable to pre-dilute some BULLDOGSEAL with an equal amount of water and apply as a primer then followed by neat BULLDOGSEAL. Since BULLDOGSEAL exhibits bridging properties, it may also be used in non-waterproofing applications such as cracks in wall surfaces, porous building blocks, wooden fascias and the reparation of spalled areas.

Instructions For Use

  1. Remove old waterproofing.
  2. Clean surfaces with wire brush. Wash surfaces with clean water. Wait till completely dry before applying BULLDOGSEAL.
  3. Stir BULLDOGSEAL before use.
  4. Apply BULLDOGSEAL with a good quality paintbrush.
  5. Dilute BULLDOGSEAL 1:1 with water and apply as a primer, allow 1 hour drying time.
  6. Paint 2 coats of BULLDOGSEAL at 1 litre per square metre. Paint one coat in one direction, second coat in a crosswise direction. Apply generously.
  7. Where roof meets wall at parapet, turn waterproofing up for 100mm and form a cove between roof and wall by applying BULLDOGSEAL thickly (10mm) in the corner. If parapet shows cracks, BULLDOGSEAL may be used as a sealer for these cracks.
  8. Dress waterproofing in all outlets and around pipes, etc. Estimated usage 1 litre per square metre roof area

  1. Remove old waterproofing.
  2. Clean surfaces with a wire brush.
  3. Gently knock in roof screws. If loose, replace with a longer roof screw. Use “positive” screws for corrugated metal roofs.
  4. Stir BULLDOGSEAL before use.
  5. Apply BULLDOGSEAL with a good quality paintbrush.
  6. For unpainted asbestos roofs, dilute BULLDOGSEAL 1:1 with water and apply as a primer.
  7. Using a 50mm brush, paint generously over all roof screws, laps in the sheeting and around the pipes. On tiled roofs, paint the joints between the ridged tiles and repair broken tiles, using BULLDOGSEAL as an adhesive, and then paint over.
  8. Estimated usage – 0, 5 litres per square metre.

  1. Remove old paint and loose material with a wire brush.
  2. Remove dust by brushing with wet paintbrush.
  3. Stir BULLDOGSEAL before use.
  4. Small cracks (< 2mm): may simply be painted over (dampen brush afterwards with clean water and use this to smooth the surfaces if required). Large cracks (> 2mm): mix BULLDOGSEAL with clean fine plaster sand to form a stiff paste. Fill cracks using a flat-ended scraper. Allow to dry for 2 hours. Over-coat with neat BULLDOGSEAL compound.

  1. Remove old waterproofing. Clean surfaces with a wire brush. Using a hose pipe, spray wall with clean water.
  2. Stir BULLDOGSEAL before use.
  3. Dilute BULLDOGSEAL 1:1 with water and apply as a primer. Allow to become touch-dry.
  4. Paint one coat of BULLDOGSEAL at 1 litre per square metre.
  5. Apply BULLDOGSEAL generously with a good quality paintbrush.
  6. When dry, it may be over-coated with neat BULLDOGSEAL or normal wall finishes.

  1. Remove old waterproofing.
  2. Clean surfaces with wire brush. Wash surfaces with clean water.
  3. Wait till completely dry before applying BULLDOGSEAL primer and ensure that no dampness push up through the floor prior to sealing.
  4. Stir BULLDOGSEAL before use.
  5. Dilute BULLDOGSEAL 1:1 with water and apply as a primer, allow 2 hours drying time. (at 25 degrees Celsius, drying time increase as temperature drops.
  6. Avoid application in damp and very cold conditions. Cover the structure that is being sealed at night and in wet or damp conditions.
  7. Paint 2 coats of BULLDOGSEAL at 1 litre per square metre. Paint one coat in one direction, second coat in a crosswise direction. Allow BULLDOGSEAL to become touch dry between coats.
  8. Apply BULLDOGSEAL generously with a good quality paintbrush.
  9. Seal any visible cracks
  10. · Small cracks (< 2mm): may simply be painted over (dampen brush afterwards with clean water and use this to smooth the surfaces if required). · Large cracks (> 2mm): mix BULLDOGSEAL with clean fine plaster sand to form a stiff paste. Fill cracks using a flat-ended scraper. Allow to dry for 2 hours. Over-coat with neat BULLDOGSEAL compound.
  11. Allow at least 3 days to dry before filling with water. (allow more time in colder conditions)
  12. Foaming may be experienced with the first filling. Remove water and re-fill. Further foam may be seen, however for fish ponds, rinse until foam is no longer evident.



Important Notes:

Stir well before use.
Always apply BULLDOGSEAL Waterproofing with a good quality Paintbrush. BULLDOGSEAL is not suitable for use with a roller.
Avoid temperature extremes during application and allow adequate drying time before rain or dew. Do not apply BULLDOGSEAL Waterproofing in rainy conditions. For the best results – apply in cool weather conditions.
BULLDOGSEAL is available in Grey, White, Charcoal (Standard) as well as Black, Green and Terracotta (Non-Standard)

BULLDOGSEAL is made according to strict standards of quality and consistancy.