On 28 Sep, 15:57, Stuart Noble
wrote:


Looks like it's based on SBR. I don't really trust water based
formulations when it comes to water resistance

Water Based formulations are perfectly OK for waterproofing. Water is
only the carrier for the resin. I can quote hundreds of applications
where I got Water Based Coatings specified and still all OK after many
years. One that springs to mind is Shelton Water Tower at Shrewsbury.
(on the old A5).