Do i need to put any pva in the mix or on the cracks to help adhesion thanks
Filling cracks in concrete path
- Thread starter norbellini
- Start date
No. It may help to dampen down with just water though.
Thank you
PVA is for interior use only. SBR would help...
www.toolstation.com
Paint it on AND add a dollop to your mix to strengthen it. Just don't get any on the surroundings, you'll have weird shiny purply coloured stains you'll never remove.
BUT... if there's a crack then it's because it's moving. If you fill it then it will just pop out, probably next winter.
Post some photos, let's have a look. The answer may be flexible sealant, or just leave it alone.
SikaBond SBR
SikaBond SBR+ is a waterproof bonding agent and mortar mixture with multiple uses. It’s an admixture, primer, bonding agent and sealer – a true multi-purpose solution that always gets the job done right.Use SBR+ as an admixture with mortar, screeds and renders, or as an effective primer-sealer...
www.toolstation.com
Paint it on AND add a dollop to your mix to strengthen it. Just don't get any on the surroundings, you'll have weird shiny purply coloured stains you'll never remove.
BUT... if there's a crack then it's because it's moving. If you fill it then it will just pop out, probably next winter.
Post some photos, let's have a look. The answer may be flexible sealant, or just leave it alone.
+1 for the SBR. And yes, although it is a milky liquid, it can leave a purple hue.
I use it to seal sandstone window sills prior to filling them. As you suggested, PVA is for interior use. When it gets wet, it may re-emulsify.
I use it to seal sandstone window sills prior to filling them. As you suggested, PVA is for interior use. When it gets wet, it may re-emulsify.
