Flexible waterproofing admixture for repointing.
A flexible waterproofing admixture that is diluted with water. Can be added as a gauging solution to sand:cement repointing mixtures. Suitable for use where flood protection is required or where there is a high incidence of driving rain.
Appears as a white/ milky liquid. Should be applied into the raked-out joint using a suitable pointing iron or repointing gun.
Test work demonstrates that repointing with Stormdry Repointing Additive No.2 and applying Stormdry Masonry Protection Cream to a wall can greatly reduce the flow rate of water through it. At a flood water height of 0.6 m, the flow rate through a single skin Fletton brick wall is reduced from approximately 12.5 L/m² /min to less than 0.2 L/m² /min.
Z21/180 Admixtures for site made cement gauged mortars
Stormdry Repointing Additive No.2
Standard product features
One 500 ml bottle will provide sufficient mortar to repoint an area of approximately 2.5 m² of masonry.