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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