Hoop Iron Specialists

Home Services Hoop Iron Specialists

Hoop Iron Specialists

Hoop irons were a system of reinforcement designed to provide additional strength in building following the introduction of cavity wall in the mid 19th century.

There are 3 main types of reinforcement which have been used extensively on the St Helier Estate in Carshalton and Morden

  • Mesh known as “Expamet. These tend to break down over time causing a problem to the pointing which can allow moisture to enter the property. Ordinarily this type of reinforcement does not require removal but is commonly removed by some unscrupulous companies.
  • Wire reinforcement known as Bricktor. These break down over time and do not pose a problem.
  • Solid Steel strips which are commonly known as Hoop Irons. These are long steel strips laid horizontally in the brickwork mortar joint.

In time, these steel strips corrode and expand causing long horizontal cracks allowing water ingress in to the cavity wall. This type of re-inforcement can cause the pointing to fall away resulting in dampness internally. Additionally, structural defects occur and most mortgage companies will not lend on properties until this has been removed.

Whilst all this sounds alarming, the reality is the majority of properties are not affected.

Shaw Preservations have been carrying out hoop iron inspections since the 1980’s.

Upon instruction, we will visit the property to assess whether hoop iron is present. If no hoop irons exist, a certificate will be issued stating the surveyors findings. This certificate is accepted by 99% of the lending companies.

If hoop iron is found to be present, we will submit a written quotation should you wish our company to remove it.

To book an inspection please contact us on 01737 851178

Corroded hoop iron
Corroded hoop irons and Expamet can damage the pointing
If the Hoop irons are left insitu the walls begin to break down
Over time the cracks deepen