Grace Construction Products has supplied its high performance Preprufe waterproofing membrane to Africa’s largest shopping centre – the £150 million Morocco Mall on Casablanca’s world-famous waterfront.
Designed by Design International and built by one of Morocco’s largest firms, SGTM Construction, the Morocco Mall occupies a 10-hectare site just 20 metres from the Atlantic Ocean. Due to the coastal proximity, client Al Amine Investment required a comprehensive waterproofing system which would protect the concrete slab from water penetration, provide protection from salt and sulphates in the ground and preserve the lifespan of the structure.
Performing exceptionally when tested for watertightness and showing no effects from ground contaminants, Preprufe 300R and Bituthene 3000 from Grace proved the ideal solution. The advanced Preprufe membrane system offered SGTM Construction the safest and most reliable waterproofing option available.
Designed with synthetic adhesive layers combined with a robust HDPE film, Preprufe provides a permanent physical barrier which will protect the structure from the salt and sulphates found in the ground of the Morocco Mall. Unlike other waterproofing solutions, Preprufe will ensure the structure remains unaffected by salt and sulphate attack even if their concentration changes over time.
Grace’s patented Advanced Bond Technology enables concrete to aggressively adhere to Preprufe, forming a unique intimate seal which prevents any water migration between the waterproofing and the structure and substantially reduces the risk of leaks.
No other system on the market protects a substructure from the harmful effects of water, vapour and gas than Preprufe. It can also be applied on wet concrete and is immediately ready without protective layers to receive rebar installation, which further accelerates the construction programme.
To maintain continuity of the fully bonded system on the walls, Grace supplied its Bituthene 3000 sheet-applied waterproofing membrane – which for many years has been the product of choice for waterproofing substructure walls all over the world. Grace’s Adcor 500S hydro-expansive waterstop, Serviseal 195 external PVC waterstop system and Bituthene Liquid Membrane completed the comprehensive specification on schedule for its December 2011 opening.