Installation Guide

Wall Ties Installation Guidance
• Wall ties are important to the stability of masonry and failure to install them correctly may
lead to damp penetration, cracking or even the collapse of walls.
• Wall ties should be pressed down in fresh mortar. They should be surrounded by mortar
and not simply positioned directly onto masonry with mortar placed around them.
• Ideally, ties should be installed with a slight fall to the outer leaf, not towards the inner leaf
as this could provide a path for moisture to cross the cavity.
• The drip part of the tie should point downward and be positioned near the center of the
open cavity.
• Ties with multiple drips can often be positioned centrally as part of the drip will normally
be near the center of the open section of a partial fill cavity. ‘O rings’ should be moved
along the shank to the open cavity.
• Installed ties should be clear of mortar droppings to allow the drip to function and prevent
water from crossing to the inner leaf of masonry.
• The practice of bending up installed wire ties should be discouraged. This can adversely
affect the performance of the tie and weaken the embedment in the inner leaf.
• Rigid ties should never be bent on site. To ensure cavity wall ties are effective at tying the
leaves together they should be installed as the inner leaf is constructed and not simply
pushed into a join.
• Ties are easily attached to wood with 10d common nails.