Wall Ties Replacement and Repair in Leeds, Bradford and West Yorkshire areas.
Is your property in need of Wall Ties Repairs? Cemplast Preservation use advanced techniques when it comes to the rectification and treatment of structural problems that occur with buildings over time. Guided by Triton Systems we aim to be at the forefront of new technologies and procedures that are associated with this specialised field of property preservation. Structural problems can come in many shapes and sizes with the most common being wall tie failure, however, others include lateral restraining lintel failure etc.
These types of problems, if not dealt with, can be very serious and can do much damage to your property and surrounding people and properties, seeing walls collapse under the pressure of the roof if the wall ties fail and structures become unsafe to enter. In many cases we work in conjunction with structural engineers to understand the root of the problem and the required steps to rectify these.
Cemplast Preservation LTD shall undertake a full survey of your property to understand the issues it may be suffering from and provide you with a detailed survey and report to allow you to understand exactly what you are dealing with. We use the newest instruments to take allow us to see the scope of the underlying problems such as metal detectors and digital borescopes. These issues can be a stumbling block in the process of buying and selling houses as mortgage companies can sometimes be very reluctant to accept a mortgage should these problems be evident. Cemplast preservation limited aim to make this process a lot less stressful by making you informed of the problems and rectifying them quickly and efficiently.
In serious cases the structure may be past the point of stabilisation and shall need to be rebuilt or knocked down, however, in most cases this type of work can stabilise the structure and prevent it from decaying or moving any further and render the property structurally sound. This shall not take any bulging or movement cracks out of the masonry itself, however, shall prevent any further deterioration
Cemplast are experienced in the diagnosis and remedial treatment of wall ties and any ancillary work required and we can provide a wall tie survey for home owners throughout Leeds, Bradford and West Yorkshire areas.
If you are considering a house-purchase, a wall tie survey by a Registered Installer should certainly be included in your preliminary investigations before making an offer. In some areas it will be required as a precondition of loan.
Cemplast carry out the replacement of corroded cavity wall ties along with the isolation of the existing ties. Breakdown of wall ties results in horizontal wall cracking and structural instability within the property. The remedy is the installation of new stainless steel double anchor bolts to British Building standards . Correct diagnosis is essential as other building faults and subsidence may cause similar problems in the fabric of the building. Cemplast carry out a variety of corrective structural strapping, stitching and bolting and work in conjunction with your allocated structural consultant.
Bed Joint Reinforcement
Bed Joint Reinforcement, or “crack stitching”, is the introduction of a helical bar embedded in cementitious grout and is designed to restore the structural integrity of failed masonry.
With the introduction of the helical system we are able to create masonry beams that allow the safe removal of windows or masonry, distributing structural loads often minimising the need for piling or underpinning in subsidence cases.
Using Bed Joint Reinforcement combined with other ties and repair strategies we are able to provide a permanent repair solution for lintel failure, lateral restraint, retaining and boundary wall restraint and repair.
What Are Wall Ties?
Essentially structural cavity wall ties are what connect the two skins (inner and outer) of your property together. They are spaced out across the property evenly in every five or six courses of bricks/stone. Over the years the design of these ties has changed and we see many varieties, including fishtail, butterflies and the newer neoprene among others. The most common wall ties that we see in houses around Leeds and Bradford areas are the older types. Fishtail wall ties were originally installed as a thick piece of steel that had been covered in bitumen to stop corrosion, however, over time this bitumen breaks down and the process chemical process between the contact of steel and water allows them to rust. This rusting gives way to expansion and this is why one of the main signs of wall tie failure is the lifting of mortar beds, giving rise to mortar falling out or step cracking in mortar joints.
There are other reason, especially in older buildings, for the bulging/movement of a buildings walls etc:
- Ground Movement
- Thermal Movement
- Inherent defects i.e insufficient lateral restraints
- Inappropriate specification
- Decay of superstructure
- Deflection under load
The installation process is far less intrusive than traditional methods often allowing the premises to remain occupied and causes minimal damage to the facade.
Often costly and disruptive removal and re-build techniques are avoided by the introduction of bed joint reinforcement retaining the aesthetics of the damaged structure.
This method of repair is especially suited to listed buildings and in applications where it is not practical for new materials to be used as the repairs are hidden in the bed joint and once re-pointed or rendered provides a maintenance free aesthetically pleasing repair that is often almost unnoticeable.