Twistfix Latest News Featuring Newman’s
As a registered contractor working closely with Twistfix we are pleased to feature in their latest news article…
Current Projects
Wall Tie Replacement, London
Newman’s are currently undertaking wall tie replacement, London for one of our council clients.
We were called upon to carry out a wall tie survey to 15 properties suffering signs of wall tie failure. The classic signs of horizontal cracking within bed joints highlighted the defects and upon our visual and intrusive wall tie survey we found that the existing ties had corroded causing them to expand and lift the bricks work.
Wall tie failure is a common defect among houses built in prior to the 1980’s and buildings of all types and constructions suffer from wall tie failure due to the ties being constructed from mild steel or wrought iron and moisture penetration through the pointing of a building reacts with the metal and causes it to rust and expand lifting the masonry. There are other causes of wall tie failure of which we will cover in future blogs.
With this particular project that is underway wall ties are being located using a metal detector and isolated using Twistfix’s unique Clansleeve’s that encompass the failed tie in a sleeve filled with resin that prevents any further corrosion. The sleeve slips onto the tie within the bed joint alleviating the need to remove any bricks.
The replacement wall tie we are using for this wall tie replacement, London is Twistfix patented 9mm stainless steel patented CD tie which enables us to install the wall ties quickly as only a 7mm pilot hole is required to drive the tie in. Using this tie enables us to complete over an elevation per day and it also becomes load bearing as soon as it is installed removing the need to wait for any setting times for resins or fixings.
If you have signs of wall tie failure or require a wall tie replacement specialist be sure to contact Newman’s today on 0333 444 0154 or email enquiries@newmans.com
Crack Repairs, London
Cracking View at This North London Warehouse
Newman’s were called upon by a commercial property management company who own various trading estates across London.
Many trading estates in London are still Victorian brick built structures that have stood the test of time and are still fully functional. The masonry construction of most of these structures is built using 13 inch solid masonry laid in English bond using lime mortar. This type of construction is a strong bond which will allow slight movement.
We were called out to attend site as a matter of urgency due to the crack rapidly widening and in some places was over 10mm’s wide. We carried out a structural survey free of charge the same day and designed a repair specification that would restore the structural integrity without any major disruption to the business operating in the building.
We used our own mobile scaffold tower alleviating the need for traditional scaffolding enabling us to be on site just two days after the initial survey.
To repair the crack in the brickwork we installed 14 No masonry beams across the crack which was drilled back into the left and right pillars. This method of crack repair not only crack stitches but distributes the loads imposed and distributes them across the masonry preventing further cracking.
The parapet wall was secured using 1.5m grout ties which were installed vertically down through the brick work which saved huge costs in a rebuild.
The repair was guaranteed against failure for 10 years. The repairs lasted only 2 days allowing the business to remain fully operational.