Replacement wall ties are for tying brick, masonry or timber walls. Thor Helical manufactures and supplies a range of retrofit cavity ties for wall tie replacement applications. Stainless wall ties have work-hardened threads that screw in to a wide variety of building materials. The threads also provide a great keying surface to enhance bonding when ties are fixed with resin or grouts. Thor Helical remedial wall ties have a longitudinal helix that is precision engineered with patented precise pitch technology. The ties are suitable for replacing wall ties where existing ties are suffering from corrosion or are missing.