Morcem® Cal Porógeno R

Composition

Lime based NHL 3.5 product with pozzolanic additions, selected aggregates and special additives.

Features and applications

• Chemical and mechanical compatibility with habitual building rehabilitation substrates.
• Does not contain cement.
• Highly permeable permitting the substrate to "breath".
• High porosity, favours evaporation of water retained in wall and prevents the appearance of salts.
• Very low capillary absorption.
• Reduces the appearance of interior condensation and mould.
• Excellent adherence to substrate, easy to apply and high plasticity.
• Combed or towelled finish.
• Manual or mechanical application.
• ECO line mortar. Reduces CO2 emissions in production of raw materials and is recyclable.

Substrates

• Application over brick manufacturing substrates, rubble and ashlar masonry and other porous substrates such as conventional mortars based on hydraulic and mineral binders.
• Substrates must be resistant, stable, sound and clean, free of dust, salt remains, demoulding agents, old paint, organic products, etc.
• Reinforce the mortar with alkaline resistant fibreglass mesh at specific points (joints between different materials, welds, pillars, etc).
• It is necessary to dampen the substrate with abundant water and wait for the film of water to disappear before applying.
• On substrates with little porosity improve the roughness mechanically. 
• Remove any plaster or plasterboard elements that are sensitive to the substrate's humidity.

Instructions for use

PREPARATION OF THE SUPPORT
Remove the plaster to be sanitised at least 50 centimetres above the humidity mark. Clean the substrate under the coating. Clean the areas affected by efflorescence. Remove any areas that are not very cohesive or resistant. Fill with natural hydraulic lime based mortar, such as MORCEMCAL MURO, avoiding the use of cement.  Brush and wash with abundant water until saturated and wait for the surface shine to disappear.  


PREPARATION OF THE MORTAR
Add water to the MORCEMCAL PORÓGENO mortar (between 5 and 5.5 litres for each 25 kilos) and mix mechanically for at least 5 minutes until a workable and uniform consistency is obtained. 


APPLICATION
Apply a splattering of bonding agent to the already mixed MORCEMCAL PORÓGENO, in a regular form with a thickness of approximately 0.5 cm, leaving a rough finish. Leave to cure for 24 hours after applying. After 24 hours, wet the bonding layer and fill with MORCEMCAL PORÓGENO mortar. Spread the mixed product over the substrate with the aid of a hand tool, trowel or suitable plastering machine, avoiding excessive pressure to allow the mortar pores to remain open. Apply the mortar in coats no thicker than 20 mm each, in a final minimum thickness of 20 and maximum of 40 mm. 


FINISH
Wait for the initial hardening and finish once the appropriate consistency has been obtained. Apply with a wooden trowel to encourage the porosity of the mortar. Cure the applied material for 24 hours to avoid its desiccation. If you wish to apply a decorative finish, use only highly breathable products such as Morcemsec Estuco, Pumacril Revestimiento Silicato or Morcemcal Acabado, following the respective instructions for each product.