Masons Mortars supplies Lithomex stone repair and restoration mortar. This is a specially formulated mortar based on natural hydraulic lime and aggregates for the repair or simulation of masonry, brick or stone.
Lithomex is a custom-coloured mortar supplied in 25kg bags, which only needs the addition of water for mixing. The mortar has high vapour permeability, a low modulus of elasticity and excellent bond characteristics. It also achieves early freeze/thaw resistance. Lithomex develops early strength but not such that it becomes stronger than the background. It is not suitable for repairs to stair treads.
Simulation of stone/brick features, rough finishes, false joints and other features can be made approximately five hours from application. Shaping and forming of details can be carried out as the work proceeds or using chisels once the material is fully hardened. The mortar can be tooled, shaped and sculpted even weeks after the final set has taken place.
Where ashlar masonry or very finely jointed masonry has suffered damage to the arises, flush-finishing in Lithomex with a tucked joint is the ideal solution. Lithomex can be lime washed. On rendered areas, Lithomex can be used to form decorative features such as mouldings and cornices.