TerraCORE Panels Corner Joints
High-Quality Stone Veneer Panels
TerraCORE Panels offers 3 types of joints that can be used where outside
corners adjoin. The first, and most common joint is an outside 90-degree
finished corner that is prefabricated in the factory and shipped assembled
to the job site. For an additional cost, this corner can also be fabricated
with a greater or lesser degree of return. Note, generally a typical corner
return leg is 3″ to 6″, however they can be made as long as
23″ in either direction when using a honeycomb substrate. Returns
on any other substrate should be limited to 2″. They can go up to
4″ but risk possible breakage during transportation.
The second, and least expensive of the joints, is a quirk miter. Each panel
is manufactured with a mitered or rebated (cut back at a 45° degree
angle) edge, then sealed with a backer rod and caulked with a structural
silicone sealant. The choice of silicone color will depend on the color
of the stone being used, and if the sealant is actually going to color
blend with the stone, or be used an as enhancement or accent line. Lightweight
stone panels that feature quirk miter joints are easy to install.
The third type of corner joint is the “open joint” or dry joint
where sealant is not required. This joint is intentionally left open to
allow moisture and air to flow through the system, alleviating pressure
behind the cladding and helping avoid water leakage. The honeycomb CORE
material is mitered / rebated in the factory and installed on panels on
the first, second, and third floors. This added step keeps the CORE material
on the lower levels of the building from being visible. Above the third
floor, this feature is not necessary, as it is impossible for the naked
eye to see a 1/4″ to 1/2″ gap that high.
The Joint Gap Process
A joint gap is defined as the horizontal or vertical gap between a TerraCORE
stone panel and any adjoining material(s), or the gap between two adjacent
panels. We suggest a 3/8″ joint gap; however, this gap can range
between 1/4″ to 1/2″ (
view drawing TC-7). Here are a few things to know about the process:
- When a joint gap is to receive a sealant, a flexible round foam polyethylene,
butyl rubber, or polyurethane, known as a backer rod, is inserted and
pushed toward the back of the open joint.
- After the backer rod is put in place, a structural silicone sealant is
gunned into the joint.
If water was to get past the sealant, the TerraCORE cladding system is
designed with a drainage cavity to allow water to drain down and out instead
of into the building.
View drawing TC-2
Go to our
downloadable CAD details for more information
Call (888) 880-1614 today to find out more about our products.