Stone Veneer Installation: Mortar or Glue?

If you're planning to install manufactured stone veneer, you’ve likely asked the common question: should I use mortar or glue to install it? The short and definitive answer is, use mortar, not glue. Specifically, only Type S mortar is approved and recommended for stone veneer installation. In this blog post, we’ll break down why Type S mortar is the correct choice, the risks of using adhesive, and tips for a successful installation.

Why Type S mortar is the right choice for stone veneer

Type S mortar is a cement-based mix specially formulated for masonry applications, including manufactured stone veneer. It offers a strong, long-lasting bond that performs well under a wide range of conditions, from indoor fireplaces to outdoor walls exposed to freeze/thaw cycles.

Benefits of using Type S mortar

Using Type S mortar for stone veneer installation offers several important benefits that make it the preferred choice for both residential and commercial projects. It provides a strong mechanical bond to concrete, masonry, and other appropriate substrates, ensuring that the stone stays securely in place over time. Type S mortar is also highly durable in all climates, resisting moisture, freeze/thaw cycles, and extreme temperatures without breaking down. Because it meets building code requirements for structural masonry applications, it’s trusted and approved for use on everything from exterior facades to fireplace surrounds. With a track record of time-tested reliability, Type S mortar remains the professional standard in the masonry industry.

Why adhesive or construction glue is not recommended

Using adhesive or construction glue to install manufactured stone veneer may seem like a convenient shortcut, but it is not recommended due to several critical issues. Adhesives such as mastic, tile glue, or construction glue simply lack the bond strength required to support the weight of stone veneer, especially on vertical surfaces or in outdoor environments. These products are also highly susceptible to moisture failure, which can cause the adhesive to degrade over time, leading to delamination or stone falling off the wall. Additionally, most stone veneer manufacturers will void the warranty if adhesive is used instead of approved mortar, and many local building codes do not permit adhesive-based installations for stone veneer. For safety, durability, and code compliance, always use Type S mortar.

Stone veneer installation: mortar or glue?

When it comes to installing manufactured stone veneer, there’s no substitute for Type S mortar. It delivers the strength, reliability, and durability your project needs, glue simply won’t cut it. For long-lasting beauty and performance, stick with the tried-and-true method trusted by pros.

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What's next?

Enhance your space with premium manufactured stone veneer. Order a sample to experience the genuine texture and vibrant colors firsthand or shop now and confidently bring your design vision to life.

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