Roundtower Performance Tanking Render is a dry, ready-mixed natural cement-based waterproof render formulated to provide long-lasting protection for internal and below-ground masonry. Ideal for heritage buildings and solid wall construction, this high-performance tanking render is specifically designed to resist water ingress and salt migration, making it particularly effective in basements, cellars, and other damp-prone environments.
Manufactured using:
-
100% pure Prompt Natural Cement
-
Graded natural sands
-
A carefully balanced retarder for improved workability
This robust tanking solution provides:
-
Waterproof protection for internal masonry walls and substrates below ground level
-
Durability against salts and environmental wear
-
Breathable performance, allowing vapour permeability while resisting liquid water
-
A strong mechanical bond to mineral-based surfaces
✔️ Colour: Tan
✔️ Binder: Prompt Natural Cement (no Portland Cement or synthetic additives)
✔️ Ideal For: Basements, lower ground walls, and heritage buildings requiring a non-cementitious waterproofing solution
✔️ Breathable & Salt-Resistant: Preserves masonry fabric without trapping moisture
✔️ Historical Authenticity: Prompt Natural Cement has been used across Europe since the 19th century in marine and structural applications
As part of the Roundtower Performance Range, this product is precision-engineered for damp-proofing and tanking works where breathable yet waterproof protection is essential—particularly in conservation settings where conventional tanking slurries or membranes are unsuitable.
