Ferrocement Water Proofing Treatment

Ferrocement can be used for waterproofing.

Ferrocement is made by placing meshes of various types together in a reinforcement core and applying cement sand mix into this mesh.

For waterproofing purpose this is modified as follows:

It comprises of layers of hot dip galvanized 22-gauge orthogonal woven wire mesh with 12mm size mesh openings stretched and fixed to substrate with 100 mm overlaps in both directions.
It is then mortared 1:2 cement mortar admixed with fiber reinforced superplasticized microsilica blended special additive in appropriate approved proportions, applied over a bond coat of polymer modified cement slurry, finished with mechanical vibratory orbital trowel.
Wire mesh can stretched & fixed with GI wire nails/clamps at 450mm c/c. The fixing with GI wire nails/clamps shall be done with epoxy in drilled holes.

The water proofing with Ferrocement can be done for various thickness.

A. 15 mm thick with two layers of woven wire mesh (over existing Brickbat coba)
B. 20 mm thick with two layers of woven wire mesh (over slopping slab with out Brickbat Coba.)
C. 25 mm thick with two layer of woven wire mesh (in sunk slabs of toilets)