Many commercial buildings employ a design feature where higher quality cladding products like natural stone veneer are used on the first floor or as wainscoat around the base of the building and less expensive cladding systems like stucco are used above that. Both of these can be mechanically fastened back to the wall studs, creating a perfect substrate that a stone veneer product can be adhered to. Two common substrates that work in this build out are cement board and a metal lathe + scratch coat. Instead, a cementious substrate needs to be prepared over the foam insulation that the stone can properly adhere to. Unlike stucco or other lightweight troweled on systems, natural stone veneer cannot be directly adhered to the foam insulation of an EIFS system. Now that we know what makes EIFS such an attractive building method, particularly for commercial construction, let’s tie it back to Norstone and answer the question how can stone veneer be installed over an EIFS system. With the cost of energy continuing to rise, EIFS systems play an important role in creating buildings that are more efficient than ever in terms of staying cool in the summer and keeping warm in the winter. The reason EIFS is so popular today is that it offers superior thermal benefits when compared to other exterior envelope building systems and can contribute to LEED accreditations in commercial projects as well. Over the past two decades or so, the drainage plans set behind the insulating foam have gotten much better and have eliminated the moisture problems that dogged these systems in their early days. As such, EIFS systems got a bad rap, especially as it related to handling moisture as it penetrated through the system. The general theory of EIFS systems have been around for close to 50 years in North America, but as with most new technologies suffered from a lack of knowledge about the benefits and a lack of product knowledge on the part of the early adopters. Various types of top coats can then be added to the EPS to create finish exterior surfaces such as stucco. A typical EIFS installation on wooden stud construction would include a water resistive barrier over sheathing, a drainage plane and EPS foam as the main insulating factor. A question we get fairly frequently is how a stone veneer product can be installed over an EIFS system, so we decided to take a look at what EIFS systems are in this week’s blog and answer the question about how stone veneer can be installed over an EIFS system.ĮIFS stands for Exterior Insulation and Finish System and is basically a building system aimed at creating well insulated, water resistant exterior envelope on a building. Norstone stone veneer products get architecturally specified on a lot of commercial projects and as a result, we get to work with architects and lots of different building systems and techniques. Installing Stone Veneer over an EIFS system
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