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ISOVIT LIME mortar is a fixing and surface levelling mortar in IWI / EWI
systems or in reinforced skimming for renovation on old substrates, exclusively formulated with Natural Hydraulic Lime.

With a clearly superior ductility and an ability to withstand higher tensions, this mortar with NHL Natural Hydraulic Lime also has a low resistance to water vapour permeability, taking advantage of the full potential of the thermal insulation panels used (Mineral Wool (MW), Cork (ICB) or Wood fibre).

Made with 100% Secil Natural Hydraulic Lime breathable binder and high vapour permeability with no cork aggregate or cement.

COVERAGE

20 kg bag: Approx. 5 m² @ 3 mm thick.

Download Documents

Declaration of Performance

Safety Document

Technical Document

SECIL BROCHURE

Application

The substrates must be hardened, free from dust, dismantling fluids, unstable materials, fluorescence, as well as any type of material that may affect the adhesion conditions.

The substrates must be conveniently levelled, without irregularities above 1 cm. The renders previously applied must have a “troweled” surface and a minimum 28 day curing period, protected of any kind of harsh weather conditions.

For applications over painted substrates, the paint must feature sufficient adhesion to support a new coating.

Preparing the mixture

Mixed with 6.0 to 6.5 litres of clean water for every bag of product, using an electric mixer, until a homogeneous paste is obtained.

Proceed with fixing of the boards displaying a discontinuous cord of mortar around the perimeter.

Fixing over render or concrete levelled surfaces

Proceed with simple and continuous fixing with a 10 mm teethed trowel, spreading the mortar on the back of the insulation board.

Recommendations for the fixing

Ensure that surfaces are uniform and levelled and that the boards are correctly and tightly placed, leaving no spaces or mortar between them.

Levelling

Spread the mortar over the surface of the cork board. Apply a first teethed layer, and immediately, apply a fibreglass mesh. The second layer must be applied over the first, in order to adequately level the surface and prepare it for the finishing layer.