Mapei Mape-Antique Intonaco NHL

Mapei Mape-Antique Intonaco NHL is a transpirant breathable render for use on heritage, listed or older properties of historical interest.

Best Uses

Mapei Mape-Antique Intonaco NHL is best used as a breathable render for old stone, brick, tuff and mixed walls as a base render prior to application of a Mapei paint system or decorative textured masonry paint.

Intonaco NHL is also suitable for rendering down to the level of the stone on walls not subject to capillary rising damp or the rebuilding old lime-based render deteriorated by the action of atmospheric agents and environmental conditions or by ageing.

Apply using a rendering machine or trowel.

Some application examples include:

• New layers of internal and external transpirant render applied with a rendering machine or by trowel on stone, brick, tuff and mixed walls without capillary rising damp
• New render or rebuilding old lime-based and/or weak render on stone, brick, tuff and mixed walls, including those of historical and artistic interest with a conservation order or under the protection of the National Trust
• Touching-up and plumbing facing walls with gaps and/or uneven surfaces
• Pointing between layers of stone, brick and tuff on masonry with a natural-finish.

Mape-Antique Intonaco NHL is a cement-free, pre-blended mortar in powder form for render based on natural hydraulic lime (NHL), Eco-Pozzolan, natural sand, special admixtures and micro-easy to apply by spraying or with a trowel on both vertical surfaces and on ceilings.

The properties of mortar made using Mape-Antique Intonaco NHL, such as mechanical strength, modulus of elasticity and porosity, are very similar to the ones of a mortar made using lime, lime-pozzolan and hydraulic lime originally used in the construction of buildings.

Compared with these types of mortar, however, Mape-Antique Intonaco NHL also contains properties which make the product resistant to various aggressive chemical-physical phenomena, such as freeze-thaw cycles, the leaching action of rainwater, alkali-aggregate reactions and the formation of cracks caused by plastic shrinkage.

To get a full render system specified for your individual circumstance, contact our Technical Team.

Application

• If capillary rising damp or sulphate salts are present, apply a restoration and dehumidifying treatment cycle comprising Mape-Antique Rinzaffo and Mape-Antique MC, Mape-Antique CC or Mape-Antique LC mixed with aggregates with a suitable grain size.
• If it is difficult to thoroughly clean the masonry (internal walls for example) or if applied on mixed walls, wet the surface and apply a layer of Mape-Antique Rinzaffo before applying the Mape-Antique Intonaco NHL to guarantee a good bond of the render. 
• Mape-Antique Intonaco NHL must be applied in layers at least 10 mm thick.
• Do not apply paint or thin layers of coloured coating products, the transpiration properties of Mape-Antique Intonaco NHL could be compromised. Use products from the Silexcolor or Silancolor ranges, lime-based paint and water repelling products such as Antipluviol S or Antipluviol W.

For full preparation and application guidance, see the Product Data Sheet.

Finishing Topcoats

If a textured final surface of Mape-Antique Intonaco NHL is required, apply a layer of Mape-Antique FC or Mape-Antique FC Civile or Mape-Antique FC Grosso.

If the surface of the render is to be smoothed off and then decorated or protected, use thin layers of a coloured coating product such as Silexcolor Tonachino silicate or Silancolor Tonachino silixane after priming the surface with a primer from the corresponding ranges of products (Silexcolor Primer or Silancolor Primer).

As an alternative to the products mentioned above, if the surface of the render is to be painted, use Silexcolor Paint or Silancolor Paint after applying their corresponding primers.

Always wait until the render is completely cured, usually approximately 7 days per cm of thickness, before applying any type of thin-layered coloured coating product or paint.

For constructions particularly exposed to rain, if the render does not require any dressing coat, it may be protected with a transpirant product such as Antipluviol S transparent, water-repellent siloxane resin-based impregnator in solvent or Antipluviol W transparent, water-repellent siloxane resin-based impregnator in water dispersion.