Waterproofing

Torch on Membranes

This involves the sealing of a structure via the application of a 3 to 4mm thick bitumen sheet membrane. These membranes are heated up with a gas torch to adhere to the substrate. The joints of the membrane are lopped to provide a sealed membrane.

Liquid Membranes

This is the sealing of a structure via the application of a liquid membrane applied in three to four separate coats. Generally the internal corners are sealed by impregnating the membrane into a gauze fabric.

Injection of Water Reactive Polyurethanes

Water reactive polyurethanes are gels that foam and swell when they come into contact with water.  We inject the gels usually into cracks in below-ground structures such as tunnels and cellars. They can also be used to seal above ground structures such as watertanks.
A high pressure pump, operating at up to 3,500psi, is used to inject the concrete into cracks in the concrete.  Once injected the gels foam inside the cracks to create a watertight seal.

Hyperlon Membranes of Carpark Joints

Hyperlon membranes are products that can elongate up to 1000% and are used for carpark joints where traditional sealants are unable to bridge the thermal movement of up to 100mm on a hot day.

The membranes are 'glued' onto both sides of the joint by scrabbling of the concrete and then bonded with epoxy paste.

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