Correct investigation to establish the cause of damp is essential and wall thickness, temperature, ventilation and heat transmission all control the movement of vapour as well as the structures ability to perform as a dry element. Structural defects, impervious sealers, decorative coatings and dense cementitious renders can all adversely affect the building performance.
The accumulation of excess moisture behind the weathering layers of mortar, paint or decorative coating and subsequent evaporation lead to the build up of hydroscopic salts deposits. These cause the spalling of the decoration and deterioration of the building fabric. To seek a cure by mechanical extraction or synthetic overcoating is to neglect to tackle the cause of initial dampness.
Natural hydraulic lime provides a vital link between the needs of a modern day specifier and those of a conservator. Hydraulic lime does not deteriorate due to the presence of humidity or moisture in a substrate. Indeed, its performance is enhanced by these to promote initial set. Unilit does not suffer from the leeching of free lime caused by early exposure to excess moisture.
The product Unilit 30 can be utilised in salts containment applications such as in cellars and against rising damp. This products unique structure ensures optimum stabilisation along with salts control.