Helifix System Installed To Residential Property Suffering From Outward Movement

posted in Case Study, Helifix

Defect

We were approached by a local builder who was working on a residential property. He required a repair scheme and quotation where he noticed cracking and outward movement to the first floor bay window.

Our local surveyor visited the property the next day to carry out a survey. Whilst at the property our surveyor discussed with the builder the best course of action. 

As a result of the survey it became apparent that the area of masonry between the ground floor and first floor bay windows were inadequately tied into main structure.

Specification

We specified the installation of the Helibeam system to be installed laterally to distribute the structural loads. Additionally, we recommended Helifix Bow ties to be installed to reconnect the external masonry back to the first floor joists. These methods combined will complete the structural diaphragm of the affected area of the superstructure, offering substantial resistance to further cracking and outward movement.

We began the project with the external repairs. Installing 2 No. twin bands of Helibar horizontally and returned to the internal masonry, to distribute the structural loads. To complete the external repairs we installed 6 No. Helifix HD Bow Ties to the front elevation, through the external masonry into the first floor joists, to prevent any further outward movement.

The internal masonry in the first floor bay window had suffered from cracking, due to the outward movement. We repaired this area by installing 4 No. twin bands of Helibar, beneath the bay window at the left and right hand side and returned to the external masonry. Following this we installed 4 No. single bands of Helibar horizontally across the existing cracks. To finish we raked out the existing cracks and injected them with thixotropic cementitious grout.

Completion

The project was complete in two days to the client’s satisfaction. We provided the client with a 10 year Helifix indemnified guarantee.

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