period property

Lintels, What Have I got? Why has it failed?

Lintel construction has varied through the decades from very elaborate brick arch lintels to less elaborate concrete lintels.

Edwardian & Victorian built properties often feature very elaborate brick arch lintels and having with stood over 200 years of change many of them are showing signs of failure. One of the most common causes of brick arch lintel failure is the change of a load bearing timber window to an uPVC non load bearing window causing the common stepped cracking that apparent on many buildings.

Lintel Repair
Lintel Repair

Lintel construction has changed with various methods and materials now in use such as flat soldier course lintels, pre stressed concrete lintels and catnic lintels. They can all fail for various reasons such as changes in structural loads, ground movement, and thermal expansion, and in concrete lintels fail due to oxidisation of the reinforcing bar.

Victorian Built Lintels
Victorian Built Lintels

In the majority of cases, lintel failure can be repaired using the Twistfix heliforce system, incorporating bed joint reinforcement with pinning ties and resin injection forming masonry beams within the structure alleviating the need for costly disruptive remove and rebuild of the lintel which is the traditional approach.

Lintel Repair Using Twistfix
Lintel Repair Using Twistfix Helical Beams

Newman’s are experts in lintel repair and have installed lintel repair schemes across London and the South East.

Author: Jon Newman
Posted:
Categories: Building and Structural Repairs, Lintel Failure

Lintel Repair, Central London

Lintel Repair London
Lintel Repair London

Lintel Failure is a common defect to period properties and cracking and sagging of the masonry is a serious structural defect that should not be ignored.

To restore the structural integrity of the masonry Newman Building Solutions designed a specification that would allow the installation to be carried out in a day but also restore the integrity.

Deep masonry beams were installed above the lintel distributing structural loads and the brick lintel was propped back into position and resin injected creating a load bearing high strength lintel whilst restoring the original aesthetics of the building.

As well as lintel failure a 3mm crack was stitched using 1.2m single crack stitching rods where cracking had occurred caused by a change in loadings where lintel failure had occurred.

To find out more about this project or for general advice contact us today.

Author: Jon Newman
Posted:
Categories: Building and Structural Repairs