What is EIFS or how to design an exterior thermal insulation system?
EIFS* (Exterior Insulation Finish Systems) is a façade insulation system for walls and ventilated slabs that works by superimposing the following layers: Adhesion of the insulating material; Isolating material; Base layer of elastomeric mortar + fire retardant reinforcing mesh; Exterior Finishing Layer (finish)
EIFS System Overview
Adhesion of the insulating material
To adhere the EPS sheets to the substrate, you can use Rhenacret Muro Fix elastomeric mortar, 25 kg bag or Rhenapur Adhesive Polyurethane Foam 750 ml can.
Isolating material
Depending on the thermal regulation required according to the geographical area and/or the client's requirements, there are different thicknesses and densities of expanded polystyrene (EPS) sheets that are used as insulating material in EIFS systems.
EPS is a rigid foam with great workability and resistance in relation to its low weight, made up of a number of cells which contain still air occluded inside, which gives it an outstanding thermal insulation capacity.
Base layer of elastomeric mortar + Fire retardant reinforcing mesh
The base layer consists of the application of a first coat of Rhenacret Muro Fix elastomeric mortar on the EPS sheet, embedding in this layer a fireproof fiberglass mesh as reinforcement, on which a second coat of Rhenacret Muro Fix mortar is applied. hiding the mesh armor giving a smooth and fine finish like plaster.
Termination Exterior (finish)
This application consists of priming Rhenacret Base Paint on the plaster made with Rhenacret Muro Fix mortar, fulfilling the function of an adhesion bridge on which the Rhenacret Muro Finish elastomeric grain or texture is finally applied.
What surfaces can it be applied to?
These systems originally arose to improve existing buildings, so they can be applied to any type of surface: masonry walls, concrete (coated or not), prefabricated systems, light wood or metal partitions, OSB, fiber cement, exterior plasterboard. , among other. It is a lightweight system that does not add extra weight to the surface, since it is mainly made up of air.
It is important to note that in developed markets, this type of system has been regulated so that a single manufacturer delivers the complete solution. In this way, the responsibility for its correct performance will correspond to a single provider.
It is a polymeric mortar designed to reinforce, level and protect exterior walls, especially
with fiberglass mesh in direct applications on the substrate. For coating solutions Exterior Thermal Insulation (EIFS) Rhenacret Muro Fix is a versatile mortar that is used to adhere the polystyrene plate to the substrate, incorporate the fiberglass mesh and plaster the surface giving a finished with stucco effect.
It is a water-based, moisture-resistant, purplish-red textured primer with a semi-gloss finish.
It has such a viscosity and rheology that it shows good fluidity on application and outstanding leveling on drying. This allows easy handling, low waste and a very good surface finish once the film dries.
It is a soft pink, moisture-curing, one-component adhesive polyurethane foam designed for joining construction elements and express gluing of EPS sheets.
Rhenapur Cleanser
High quality, one-component, solvent-based spray, used for cleaning up residues of Polyurethane foam.
Gun specially designed for the application of Polyurethane Foams in a precise, professional and safe way. Thanks to its materials, it is highly durable and with proper maintenance, with the use of Rhenapur PU Foam Cleaner, it can be used for a long time.
It is a fire retardant fiberglass mesh. Its function is to provide support and resistance to the system, avoiding the generation of grooves or cracks as a result of the settlement of the materials.
Rhenatec PVC Corner with glass fiber mesh built-in, preformed and high resistance.
Rhenatec PVC leak-proof corner with mesh
fiberglass incorporated, preformed and high
resistance.
It is a self-adhesive fiberglass mesh tape developed for details and reinforcement of the EIFS System.
It is used as reinforcement and encapsulation of window and door edges on polystyrene sheets in the EIFS system. Also for the repair of cracks and holes in walls and partitions.
Acrylic Sealer is formulated based on styrene acrylic dispersions, highly resistant outdoors and indoors, especially on alkaline substrates exposed to aggressive weather. The formulation of this product is free of Lead, Mercury, Chromium and heavy metals, complying with non-toxicity standards ASTM-F-963 for the US and EN 71-3 for the European community.
It is a Coating for texturing different types of surfaces, with great flexibility and with different well-balanced quartz sizes for an excellent finish, achieving highly decorative effects as determined by its application. It is formulated as an aqueous paste based on acrylic resins with a highly flexible grain-type finish for walls with a stable, weather-resistant decorative finish and excellent adhesion.
All rights reserved, DEXIMA SpA, designed by Bigidea