Wondered about the comments from Kirk. See the copied youtube comments below.
Would they use different sand/cement in Down Under.
FIXIT
we put waterproofer in the first coat but not the 2nd coat
Kirk Giordano plastering Inc
Good evening fix it, I'd stop doing that, if you waterproof the first coat you have sealed it, In order for the second coat to adhere it need to adhere by suction or what we call a mechanical bond, you need a porous first coat that you make moist with water to accept the second coat which is wet. If you waterproof the first coat, the second coat will not adhere forever unless you apply a bonding agent over the first coat as it's now sealed. Bringing peace, love, and harmony to plastering The complete plastering encyclopedia on video, by the plastering messengers of Youtube
Would they use different sand/cement in Down Under.
FIXIT
we put waterproofer in the first coat but not the 2nd coat
Kirk Giordano plastering Inc
Good evening fix it, I'd stop doing that, if you waterproof the first coat you have sealed it, In order for the second coat to adhere it need to adhere by suction or what we call a mechanical bond, you need a porous first coat that you make moist with water to accept the second coat which is wet. If you waterproof the first coat, the second coat will not adhere forever unless you apply a bonding agent over the first coat as it's now sealed. Bringing peace, love, and harmony to plastering The complete plastering encyclopedia on video, by the plastering messengers of Youtube