Wall Tie Failure
According to the Building Research Establishment, 2 million suffer
wall tie corrosion or failure and are in need of specialist remedial
wall ties replacement.
Often the problem is made worse when insufficient ties have been used
during construction.
The absence of effective wall ties will, ultimately result in failure
of a wall’s structural integrity and its probable collapse under
high wind conditions.
Causes
 |
Inadequate protection
– prior to the 1930s ties were not galvanised |
|
Substandard galvanising
– the British Standard for weight of galvanising was actually
reduced between 1964 and 1981 |
|
Chemical action –
for instance where corrosive black ash mortar has been used |
|
Location – such
as marine environments with driving rain and salt laden atmospheres. |
The Symptoms
|
Horizontal cracking
at regular intervals in external mortar joints. |
|
Outward bulging of
the wall. |
|
The lifting of roof
edges. |
|
Internal cracks. |
Replacement Ties
Each property is surveyed using a metal detector to locate the ties
and an endoscope to examine their condition.
Where replacements are necessary, Peter Cox select from a range of
stainless steel wall tie designs, either mechanical or resin fixed,
to suit the type and condition of the masonry involved.
Ask for a cavity wall tie
survey
Read/download
free leaflet on wall ties |
