Securing Cast Stone to an Exterior Wall
We have been asked a couple of times on our sister company’s Houzz page about how the cast stone or limestone is attached to our home’s exteriors. There are a few different approaches and it seems that every subcontractor has their own opinion on which technique is the best. Overall though it seems to boil down to three main techniques. I found this great detailed explanation at www.StoneLedgends.com
With the numerous methods employed over many centuries, it has come down to three basic methods of installing stone. All work well, but the in-beds (which we’ll discuss below) require the most planning, because the inserts are usually part of the manufacturing process (some in-beds are installed with epoxy after the stone fabrication).
Under these basic types, many techniques are used – depending on the situation. Here, we will review a few examples, but by no means are we implying they are the only way stone is installed.
|Bearing the Load
So often I am asked if stone is load bearing? The answer is YES… depending on the size of the stone and the amount of the load.
|Attaching Stone to the Structure.
So far, we’ve covered attaching to the stone… now let’s discuss the structure.In centuries past, where solid block walls used stone as the entire structure, the walls were literally three feet thick. But as far back as the Roman Empire, even these walls used dowel pins made of bronze when the builder thought necessary.Today, you have three basic types of structures used in contemporary Architecture: WOOD FRAME, MASONRY FRAME, and STEEL FRAME.
Attaching stone to the structure is done in many ways, and in most cases you can attach to standard framing members. But, sometimes it is necessary to have the structure specifically designed to make the stone installation as easy as possible… especially important in commercial applications where lightweight steel framing may be used, or where the spans are very long between framing members.
We hope this further explains how the cast stone is secured to the exterior of the home. At 2[g] Habitats we wrap our entire exteriors with a plywood or zip board material. When the plans call for a stucco exterior, we use a true masonry 3 coat stucco application. This provides for a solid foundation to anchor to.
If you have any more questions, we would love to hear from you!