Adding a storey to existing buildings offers enormous potential for extra living space, particularly at a time of housing shortage. However, depending on the type of construction and the dimensions of the existing foundations, it may be necessary to reinforce them.
Building height extension and roof extension: an alternative to new-builds
The idea of adding a storey or a roof has been around for many years. Particularly in conurbations, where building land is scarce and green spaces such as gardens and parks must be preserved, the only option is often to build upwards or add a roof extension.
The advantages of raising the building
- No new building land is required.
- The existing infrastructure and traffic areas can be utilised.
- Under certain circumstances, an energy-optimised extension improves the energy efficiency of the entire property.
Safe building using the URETEK process
If the loads on the foundations and the subsoil are increased by adding a storey to the building, the load-bearing capacity may sometimes be exceeded. There may even be a risk of ground subsidence. The URETEK process has proven its worth in many extension projects where the subsoil had to be reinforced to ensure the building remains crack-free and stable.
The URETEK process enables an increase in load-bearing capacity.
For example:
- Extensions to residential and commercial buildings
- Modifications involving increased loads
- Loft extensions
The benefits of the URETEK process
- No need to move out: minimal disruption for the property’s occupants. There is no need to completely clear out the cellars.
- No new foundations: there is no need to build new foundations. Foundation widening or underpinning is also possible.
- Structurally compatible load transfer at the surface: the additional loads are safely and structurally compatibly absorbed by the subsoil. The elastic support of the structure is retained.

Building before raising the ground level

Building after raising the ground level
