Grout Bags used for Underpinning

Hydra-Capsule grout bags are manufactured from a specially woven fabric which enables them to withhold relatively high pressures when inflated with grout. A simple yet practical device used when conventional shutters are impossible to fit the grout bag can be adopted to provide a quick and easy solution. Once pressurised the grout bags contact surfaces form a perfect bearing area regardless of shape. They are normally used for a multitude of applications, such as; underpinning foundations (systems), dry-packing alternative, support beam preloading device, temporary or permanent packs for supports.

We offer an extensive standard range of grout bags available straight off the shelve, these are listed below. Alternatively, we can manufacture special sizes to suit your particular application or project. However, please remember that specials made to order can take time, sometimes up to eight weeks depending on the quantity required. Our standard lightweight hand operated grout pumps and electric paddle mixers are also available for hire or sale at competitive rates.

We strongly recommend that customers use our non-shrink 'Hydra-Grout' which has very high flow properties making it easy and efficient to pump when using our light weight hand operated grout pumps. The material has been specially formulated for use with our grout bags, it obtains high strengths quickly, (20 N/mm²  within 24 hours and  55 N/mm²  within 7 days) while also maintaining a reasonable working period during installation (45 minutes),  for further advice or assistance please contact us.