Stormdry Repointing Additive No.1 – Breathable Waterproof Mortar Additive for Brick & Stone Repointing, Reduces Rain Penetration, for Cement & Lime Mortars, 500ml

Used recently..all looks good...definitely make the mortar easier to work.....time will tell?

Delighted that this was available in time for the repointing of the back of my house. The additive was new to the brickie but he had no problems. I'm looking forward to using the Stormdry Masonry Cream myself to complete the job.

Its hard to give a positive review as the product has only just been applied although early signs are good, no damp patches returning, so fingers crossed. Your brush can be washed afterwards with soap and water but wouldn't be any use for anything else!

I’d not recommend as it bleached the colour of my chosen everyday mortar.

great to apply, will not know how good until the bad weather comes.