Before revision: Advantages Resist wind driven rain Thermal break provided by slow moving air films and airgap Enables use of insulation in the cavity if the cavity is designed for it Tie types A tie in a cavity wall is a used to secure the internal and external walls, typically using metal tie straps or truss-like assemblies of welded wire that link the masonry thicknesses together.
After revision: Advntages Resist wind driven rain Thermal break provided by slow moving air films and airgap Enables use of insulation in the cavity if the cavity is designed for it Tie types A tie in a cavity wall is a used to secure the internal and external walls, typically using metal tie straps or truss-like assemblies of welded wire that link the masonry thicknesses together.