Conservation Mortars: Non-hydraulic stone repair mortars produced from mature Chalk lime putty mixed with stonedusts and sand, colour and texture matched to the stone to be repaired. The repaired stone is often then treated with sheltercoat itself colour-matched to the stone. Deep repairs are normally filled with a coarse repair mortar prior to the application of the surface repair mortar.
Ash Mortars: Ash mortars are a blend of mature Chalk Lime Putty and sieved coal ash designed to match Victorian ash pointing mortars. Early historic mortars normally have ash inclusions as kiln-fuel residue, and coal ash or charcoal particles are often added to repair mortars to match this.
Brick Repair Mortars: Brick repair mortars are a blend of mature lime putty and sand but normally require the addition of pigments for an accurate colour match.