Surface Prep: Plascon Dampseal

Surface Preparation Guide for Plascon Dampseal

  • Plascon Dampseal Surface PreparationOn exceptionally porous surfaces, a third coat of Plascon Dampseal may be necessary.
  • PLASCON DAMPSEAL may be overcoated with a good quality emulsion or enamel paint. If overcoating with an enamel, first prime with an alkali resistant PLASCON PLASTER PRIMER.

Treat exceptionally damp walls as follows:

  • Divide the area into three equal horizontal sections. Apply a first coat (thinned) to the bottom section and allow 24 hours to dry.
  • Next treat the middle section and allow 24 hours to dry.
  • Finally treat upper section and again allow 24 hours to dry.
  • Apply a second coat (unthinned) to the entire area.

NOTE: Coating may be smoothed over with a trowel wetted with MINERAL TURPENTINE to match up to a smooth wall surface.

>> Download the Dampseal Data Sheet <<

19 thoughts on “Surface Prep: Plascon Dampseal

  1. I wish to use stoep enamel to paint a screeded floor (both interior and exterior). Would you recommend bonding followed by your multi surface primer before I paint with stoep paint?

    • Hi Roger, thanks for getting in touch.

      Please note that one has to endure a waiting period before painting new cement screeded floors. They need to cure for a minimum of 28 days before painting!

      Once ready, ensure that surfaces are dry, sound and clean. Prime with one coat Stoep Enamel paint with an overcoating time of 16 hours at 23ºc. Finish with a final coat Stoep Enamel with 16 hours drying time.

  2. We applied Dampseal to a bedroom wall 5 days ago, as per the application instructions. We painted over it the next day but the smell of the Dampseal still lingers. We have tries onions, bicarb, charcoal and vinegar. Nothing helps. What can we do?

    • Hi Henry, thank you for your query.

      The most effective method of ridding a room of lingering paint odour is to ensure that there is enough ventilation in the room. However, you could also try placing a saucer with vanilla essence in all four corners of the room. Let us know if that works!

    • Hi Henry, thank you for your query.

      The most effective method of ridding a room of lingering paint odour is to ensure that there is enough ventilation in the room. However, you could also try placing a saucer with vanilla essence in all four corners of the room. Let us know if that works!

    • Hi Alan, thank you for getting in touch with us.

      Please may you kindly be more specefic about the surface you are wanting to repaint with Dampseal? Is it wood? Concrete? Also, is PVA all that it was previously painted with? The more info we have about your surface, the better we can advise you.

  3. Hi Guys, So I am buying a house that has a small area of damp by the built-in braai. Should I paint the whole house exterior with Damseal just as a preventative measure?

    • Hi Marius, thanks for connecting. Please note that Dampseal should only be applied for raising damp. You will first need to find the cause of the damp and repair that area.

      • I am planning to paint my outside toilet with Dampseal. Mould is growing and there is salt residue. Is this what you mean with raising damp?

        • Hi Liza, thanks for getting in touch. Rising damp refers to a surface that is damp and continues to get worse (it most often starts at the bottom of a surface). Is the surface damp or just mouldy? If damp you will first need resolve the source of the damp before applying Dampseal. Thereafter all info regarding Surface Preparation & Application can be found in the data sheet available for download here.

    • Hi Guy, thank you for querying with us. Please note that you will need to use Plascon Multiseal & Plascon Primer.

      All surfaces must be clean, firm and dry before painting. Repair and fill any cracks and prime with Plascon Plaster Primer. Apply several coats by brush or roller building up to a total thickness of 1-3 mm, allowing at least 4 hours drying between coats. Finish with your chosen top coat.

  4. Hi, I have a damp problem around the windows. It seems to come from the outside moist air. I’ve brushed off all the flaky paint. The rest of the wall is painted with PVA. Can I just paint over it with Dampseal before repainting?

  5. Good day, I have a balcony above my dining room and when it rains water seeps through and has caused dampness on that portion of my ceiling and walls. The old paint is now peeling and there is a bit of mould. We have sealed the balcony tiles and the area that water was seeping through. Can I clean my walls and ceiling and apply Dampseal on these areas?

  6. Hi. My house is 80 years old and a small section of the plaster in the lounge keeps bubbling slightly. I have scrapped all the existing paint off the wall and found the plaster is rather crumbly underneath. Can I apply Dampseal as per your instructions or should the plaster be totally removed down to the brick and then re-plastered? Thanks Noel

    • Hi Noel, thanks for getting in touch. If the plaster is crumbly then you will need to remove all of the plaster and re-plaster, then apply Plascon Dampseal. However, it’s important to first find the source of the moisture problem and get it fixed.

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