Underwater concrete works

Underwater reinforcements are easily achieved using FlexiTex® concrete mattresses . It is easy and practical to fill FlexiTex® with concrete to protect the seabed or harbour structure.


Where a harbour has to be dredged to accommodate deeper boats, previous structures have to be protected and concrete mattresses offer a solution that is stable and will prevent future erosion.

Erosion is generally caused by boat traffic with high turbine velocities, as well as by strong hydraulic conditions (waves etc). Our engineers will assess the local conditions and advise on the type and thickness of FlexiTex® mattresses which need to be used. In most cases it is advisable to join panels with zips which facilitate very easy installation underwater by diving teams.

FlexiTex® mattresses provide a long-lasting solution.

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FlexiTex©

FlexiTex® is a textile shuttering for use at the water-side and underwater concrete work.


There has been a significant increase in the use of textile shuttering in concrete work, particularly at the water-side and underwater projects. The most important reason for this increased interest has been the introduction of woven fabrics made of high-strength multifilament synthetic fibre.

Coupled with simplified installation working procedures, this results in reduced working times and attractive cost saving.

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