Propamsa Solutions

How to renovate and old façade with limestone mortars

Over the years, façades deteriorate and need to be renovated.Therefore it is important to know the characteristics and behaviour of the materials they contain (brick, natural stone, limestone mortars, one-coat mortars) so that the new coating is chosen appropriately.

The mortars in the REVAT® CAL, highly breathable and permeable to water vapour, provide a highly decorative coating for all kinds of façades and indoor environments, and also for restoring all kinds of buildings, including landmark and old buildings.

Continual exposure to weather conditions (rain, freezing conditions, sudden temperature changes, etc.), causes the façades to age naturally. To restore façades, appropriate coating materials must be used.

Related products

Solution

PREPARING THE SUPPORT

Check the condition of the support by making sure that it is firm and strong.

In old masonry supports, empty part of the joints, and remove any deteriorated elements.

Wash with pressurised water and finish removing fungi, dust, paint remains, deteriorated parts, etc., from the support surface. Use REVAT® CAL MURO as lime masonry mortar fool the repair or reconstruction of the factory.

Apply REVAT® CAL FONDO as a layer of priming and levelling, to obtain complete flatness, before applying the finishing mortar.

Apply REVAT® CAL ENFOSCADO or REVAT® CAL TRADICIONAL with a little more finer texture, for mortars with a colour finish it is advisable to apply MALLA FIBRA DE VIDRIO REVAT 110 over all the finishing  render, particularly when there is great  variety of  materials in the support.

APPLICATION

When mixin the mortar from de range REVAT® CAL, manually or mechanically, using the same proportion of water between mxing, and leave the paste to stand for about 5 minutes. Spread the paste over the support using a trowel or a projection machine.

The REVAT® CAL ENFOSCADO mortar can be left as a render finish (smooth, floated, swirly, Austrian-rococo-stucco, etc.).

Use REVAT® CAL TRADICIONAL to obtain highly decorative colored finishes typical of traditional lime stuccos, in addition to being able to perform on the same glazes and tinted with rust.

Spread REVAT® CAL TRADICIONAL in a compact, even manner and with a trowel, over REVAT® CAL BASE, about 5 to 10 mm thick, according to the finish. Apply the desired finish when the product has the necessary consistency, usually between 1 and 6 hours after application.

Recommendations

  • The usual application supports are: ceramic brick, thermoclay blocks, concrete blocks, cement or concrete rendering, concrete and masonry.
  • Do not apply to plaster, paint or non absorbent surfaces.
  • Do not apply in direct sunlight or strong winds.
  • Do not apply if rain or freezing temperatures are forecast.
  • Apply at a temperature of between +5ºC and +35ºC.
  • Protect the lower parts of buildings with base  plates.

Solutions by category

Subscribe

Join thousands of professionals and don’t miss the latest in materials, construction techniques and training.

Social networks

Other solutions in Lime Coatings

other highlighted solutions

Technical mortars

Build a barbacue

Making barbecues, chimneys, ovens, etc., requires using specific materials that withstand the extreme conditions to which they are going to be exposed (high temperatures, expansions and contractions, etc.). The solution lies in using PROPAM® REFRACTARIO, a refractory mortar which, due to its technical characteristics, is suitable for coating walls and making joints that are subject to environments in contact with fire or high temperatures. The abrupt changes in temperature that occur when lighting barbecues, fireplaces, ovens, etc., produce dilations. When turning off facilities, contraction movements in the materials used are produced. These changes can produce cracks and even lead to loosening, if the materials used for its...

Seguir leyendo

Technical mortars

Build a wall with glass blocks

A glass block is a very useful material both in construction, decoration and interior decoration, as it can be used to separate different ambiances, showers, outside walls, or simply as decoration. It is formed by two pieces of molded glass, which are welded at a very high temperature, to create a vacuum air chamber between the two pieces. This air chamber confers the capacity of thermal-acoustic insulation. Once placed provides highly decorative finishes, given the wide range of formats and colors. Related products PROPAM® GLAS Solution SUBSTRATE PREPARATION Check the condition of the substrate, it must be completely set and clean of dust, paint, oils, etc ... It is essential that the substrate is perfectly levellled, only this way we...

Seguir leyendo

Technical mortars

Making quick fixings in masonry

Masonry tasks like arrissing, small anchorings, door and window framing, attaching pawls, sanitary units, hinges, etc., require the use of quick hardening mortars that can provide very high mechanical resistances in a few minutes.  The solution lies in using PROPAM® CEM RAPID, that is, a mortar formulated on the basis of high resistance cements and special quick setting and hardening admixtures. Related products PROPAM® REPAR 20RPROPAM® PRONTO Solution SUBSTRATE PREPARATION The substrate must be firm (minimum tensile strength of 1N / mm2), rough and free of oils, old paint residue, demoulding agents, dust, cement slurries, etc. Moisten the substrate with water before applying PROPAM® CEM RAPID. This operation must be...

Seguir leyendo

Waterproofing systems

Fixing glass wool in an enclosure chamber

The need to obtain efficient thermal insulation and even more so since the TBC came into force a few years ago, has lead the construction industry to develop materials like glass wool, for use as thermal insulant and acoustic absorbent in enclosure walls inresidential, commercial, industrial and service buildings. For its correct placement it is necessary to use a mortar that allows the waterproofing of the enclosure against water that can penetrate from the outside, without forming a vapor barrier. Related products PROPAM® MUROS Solution SUBSTRATE PREPARATION Check the condition of the substrate, it must be resistant and be completely set and clean of dust, paint, oils, etc ... Remove mortar remnants from joints between bricks. The...

Seguir leyendo

Do you already receive our newsletter?