Project DescriptionThis 150 year old, semi-detached property was suffering from separation between the gable end wall and the front and rear elevations at 1st floor and attic floor levels. The property, located in St. David’s, West Wales, the smallest city in the UK, is currently used as a holiday home in the popular tourist area.
The outward movement of the 650mm thick, rubble filled, solid stone gable wall, was due to a lack of lateral restraint and had become apparent during renovation works where the removal of the roof to an adjacent single storey structure may have reduced lateral support for the wall further.
The anchors were to provide lateral restraint across the whole wall, where voids were present, by providing a solid anchorage to the timber floor structure and internal wall structure.
Holes were drilled through the gable end wall and the first 3 floor joists, which ran parallel to the wall, and 22 No: 12mm x 1.6m Helifix SockFix Anchors were inserted through the wall and floor joists before being inflated with grout. The grout inflation causes the anchors to expand to fill all spaces within the wall and the gaps between the joists to provide a solid anchor.
In addition, 11 No: 12mm x 1.0m Sock Anchors were installed through the gable wall into the internal cross wall (115mm thick blockwork) to provide additional lateral restraint.
All of the anchors were installed from the outside of the property, meaning that only relatively small areas of floorboard needed to be lifted to expose the joists. This prevents added disruption and costly reinstatement work. This method of installation also leaves an aesthetically pleasing invisible repair.
On completion of the work, a full Protectahome Guarantee was issued to provide added piece of mind and security to our client.