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Two Waterproof Treatments on a Wall?

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  1. #1
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    Default Two Waterproof Treatments on a Wall?

    Hi everyone

    I'm attempting to waterproof a underground garage vertical wall that has a ground soil on the other side. The bricks seem to be grey cement type bricks but could actually be "normal" grey coloured bricks. Hard to say because they're old, etc.

    The wall seeps in a about 3 spots after heavy rain, nothing too dramatic but enough for the dampness to make the garage difficult to store things in a dry way, etc. The seepage/dampness seems to seep through from the mortar joint in one spot but in the other two spots it seems it's coming in through the actual brick. (it could possibly be that it's still coming in through the mortar but the brick absorbs the moisture, difficult to ascertain exactly).

    I've got some Dunlop Damp-Proof Waterproofing which is meant to handle negative pressure etc.

    My neighbour has also donated some Betta Damp Stop that is meant to do a similar job.

    I was wondering as the Betta Damp Stop is classed as a Primer if I laid that on first and then laid the Dunlop product if this will be effective or a total disaster (hehe).

    Neither Dunlop or Betta could tell me if this is possible as they're "competing" products.

    Would anyone have some thoughts on this?

    Thanks heaps.

  2. #2
    Member wspivak's Avatar
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    Default

    Quote Originally Posted by Ren4357 View Post
    Hi everyone

    I'm attempting to waterproof a underground garage vertical wall that has a ground soil on the other side. The bricks seem to be grey cement type bricks but could actually be "normal" grey coloured bricks. Hard to say because they're old, etc.

    The wall seeps in a about 3 spots after heavy rain, nothing too dramatic but enough for the dampness to make the garage difficult to store things in a dry way, etc. The seepage/dampness seems to seep through from the mortar joint in one spot but in the other two spots it seems it's coming in through the actual brick. (it could possibly be that it's still coming in through the mortar but the brick absorbs the moisture, difficult to ascertain exactly).

    I've got some Dunlop Damp-Proof Waterproofing which is meant to handle negative pressure etc.

    My neighbour has also donated some Betta Damp Stop that is meant to do a similar job.

    I was wondering as the Betta Damp Stop is classed as a Primer if I laid that on first and then laid the Dunlop product if this will be effective or a total disaster (hehe).

    Neither Dunlop or Betta could tell me if this is possible as they're "competing" products.

    Would anyone have some thoughts on this?

    Thanks heaps.
    Hi Ren,

    I wouldn't mix the two products as there's literally no way to know if the two products will work together. Just choose one and then follow the instructions to the letter on their Technical Data Sheet.
    The WaterStop Shop
    waterproofing supply professionals
    Oakleigh, VIC

  3. #3
    Je pense, donc METRIX's Avatar
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    Default

    Choose one or the other, mixing these specialist products is not advisable, neither company would help you out as this is out of spec for the product.
    Either of these product should do the job, do a follow up to give the results.
    Mieux vaut prévenir que guérir

  4. #4
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    Default

    Thanks wspivak. I was hoping because the Betta was a primer it wouldn't be an issue but I guess different waterproofing chemicals don't always play nice with each other.

    Btw, would something like Moisture Proof or Sealtight be useful and then followed by the Dunlop Damp-Proof product? Or would the 2 products not get along again?

    Thanks again.

  5. #5
    Member wspivak's Avatar
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    Quote Originally Posted by Ren4357 View Post
    Thanks wspivak. I was hoping because the Betta was a primer it wouldn't be an issue but I guess different waterproofing chemicals don't always play nice with each other.

    Btw, would something like Moisture Proof or Sealtight be useful and then followed by the Dunlop Damp-Proof product? Or would the 2 products not get along again?

    Thanks again.
    They may work, but as we don't sell Dunlop products, it's hard for me to be 100% certain as we've never tested them together.
    The WaterStop Shop
    waterproofing supply professionals
    Oakleigh, VIC

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