A 150 year old brick and stone cottage was suffering from significant delamination and movement of the rear elevation, a stone and brick built rubble-filled wall. This had resulted in a large bulge in the wall and its separation from an internal cross wall.
Previous attempts to rectify this historic problem, involving external pattress plates and replacing areas of affected stonework with new bricks, had all failed.
A reliable solution was needed that would consolidate the rubble-filled wall, provide lateral restraint, reconnect the internal and external walls and prevent any further movement.
A repair scheme was devised using 38No. 425mm and 450mm SockFix grouted anchors to stabilise the rear elevation while an additional 4 x 1500mm anchors were installed to reconnect the internal and external walls.
â— To consolidate the rear stone and brick rubble-filled wall the anchors were installed in a staggered pattern across the full height and width of the wall.
â— Holes were drilled through the near leaf, the rubble fill and into the far leaf. Once the SockFix anchors had been inserted into their clearance holes they were pumped full of grout to expand the sock, filling any voids and forming a strong mechanical connection with both leaves of the wall and the rubble infill.
â— To secure the internal cross wall to the rear elevation, the four long grouted anchors were installed through the outer wall and into the centre of the internal wall.
The repairs were completed quickly and efficiently to restore full structural integrity and once the retained drilling cores were replaced there was virtually no sign of the completed repair work.