EWI-747 Lime Render NHL 3.5

EWI-747 Lime Render is the flagship product in the Heritage Range. One of the primary reasons for using lime render is breathability. The breathability of lime render refers to its ability to allow water vapour to pass through its structure, facilitating the movement of moisture in and out of a building’s walls. This permeability is a crucial characteristic of lime render, providing several advantages over less breathable materials, such as cement-based renders.

Crucially, lime-based products marry well with our eco-friendly, sustainable policy; with no chemical additives, our Heritage Range is completely natural and aesthetically timeless. Perfectly suited to the renovation of older buildings, the Heritage Range sets through carbonation, which means it actively absorbs CO².
Intended Uses
Ideal for plastering and plastering on brick, stone or mud walls indoors and outdoors. Especially ideal for works where the use of traditional, highly breathable, more durable and sustainable materials is required.
Application Conditions
It is applied manually (using a trowel) or sprayed using an automatic plastering machine. It is recommended to spread the mixed mortar in a usual thickness of 4 to 10 mm, for thicknesses greater than 10 mm, apply in two or more layers before the previous one has hardened. Finally, float until the desired finish is achieved.

EWI-748 Lime Basecoat NHL 5

EWI-748 Lime Basecoat is a premixed, powdered bonding mortar based on natural hydraulic lime (NHL5) as a binder, fine natural pozzolans, and selected additives that give it a longer working time in the application and great adherence to the substrate. Ideal for reinforcement, and regularisation and is especially recommended for the adhesion of insulation boards of EWI systems.

The unique properties of natural hydraulic lime in combination with natural pozzolan give the mortar optimal durability and high chemical resistance to acid rain and salts.

Lime Basecoat has a micro-porous internal structure that facilitates the passage of moisture and transforms it into water vapour. Thanks to the high permeability of the mortar, the water vapour is quickly evaporated. This generates the breathability of the building: it ensures a lower conductivity of the wall (which allows for significant energy savings in heating and cooling compared to the use of conventional cement) and favours the creation of an indoor climate of well-being, which improves the quality of life.
Intended Uses
Premium Bio Silicone Paint is ideal for use as an Lime Basecoat is designed for use in new construction, renovation and bioconstruction in interior and exterior masonry works such as:
  • Adhesion and reinforcement mortar for insulating boards EWI systems.
  • Protection and regularisation of walls: as a first base coat on porous, slightly porous supports or insulating boards and as a finishing coat if rustic or fine textures are required.
  • Raising of masonry walls.
  • Laying of natural stone or settling of tiles.
Application Conditions
It is recommended to spread the mortar to a thickness of 4 to 10 mm, for thicknesses greater than 10 mm apply in two or more coats, preferably before the previous one has hardened.

Adhesion of insulation boards:
Apply a perimeter cordon 6 to 10cm wide and 2.5 to 5 cm thick on the plate, fill the inside of the cordon with 2 or more 8 to 10cm sticks, depending on the size of the plate. The mortar must cover at least 40% of the panel surface.

On supports with very good planimetry, it is possible to apply the mortar on the support and the insulating panels (double glueing), using a 10mm x 10mm notched trowel.

Regularisation on the insulating panels with mesh. Regularise at least 24 hours after adhesion of the plates.
  1. Combed coat with a 6-8 mm notched trowel.
  2. Laying of the mesh on top of the combed layer.
  3. Fill in the mesh until the “groove and valley” are evened out. Do not flatten.
  4. Apply a final coat of regularising mortar.
The mesh must comply with the following characteristics: 100% fibreglass, minimum mesh opening 5x4mm, weight 160 gr/m², chemical resistance to alkalis.

Failure to comply with the application instructions may adversely affect the finish and durability of the final result.