Brick veneer has actually a lot going because that it. This wall cladding offers low maintenance and rich and also historically appealing aesthetics, making it a smart an option to use. Except when brick cladding is excellent incorrectly.
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While veneer failures space unusual, the underlying causes aren’t, particularly when it pertains to ties. In fact, my colleagues and I in ~ IBACOS see recurring problems with brick ties, specifically when mounted by workers brand-new to the trade. This mistakes may not reason immediate problems, but, under the appropriate circumstances, lock can present the builder with a substantial liability.RELATED
Avoid these 4 Pitfalls once Installing Brick Ties
Here space the most typical issues we’re seeing, in addition to best techniques for law the project right when installing brick veneer.
1. Inaccurate spacing that brick ties
While trades all too often place ties whereby they uncover them to it is in convenient, bring about attachment only to plywood or OSB sheathing, they need to really be nailed come framing. Most codes specify one tie per 2.67 square feet of wall area, which have the right to be met through nailing ties to each stud and also spacing them every 16 inches increase the wall. The numbers job-related with 16- or 24-inch stud spacing.
2. Bad nailing practices
In part communities, we’ve watched corrugated ties set up with uncoated nails, which are susceptible to corrosion. In rather we’ve viewed installers use roofing nails, i m sorry don’t penetrate the framing deeply enough. Constantly use a minimum 8d (21/2-inch) galvanized nail. If you’re utilizing corrugated ties, nail as near as feasible to the bend for best lateral strength.
3. Brick ties installed upside down
Some installers fasten every the ties come the wall surface before starting the brick. On this jobs, we regularly see corrugated ties folded so the the horizontal leg—the one installed in the mortar joint—is above the upright leg nailed come the wall. Presumably, the ties inside wall up that means up when the bricklayers reached them. One problem is the an upside-down tie will act as a feather under load. Another danger is that water dripping down the wall can seep behind the tie and start corrosion or allow for water to go into the wall.
Traditionally, bricklayers set up ties as they moved up the wall, which guarantee a appropriate bend. If that’s no acceptable, think about using base and vee ties, i m sorry consist of a base through a slot that is attached come the wall surface and a wire vee the extends from the slot come the mortar joint. Due to the fact that the slot provides up to 4 customs of vertical adjustment, the installer have the right to align the vee with any type of joint height.
4. Vast gaps
Corrugated ties are only stiff enough for a 1-inch airspace. In part areas, however, structure contractors routinely make ledgers vast enough for stone veneer. Then when brick is used, the bricklayers align it with the exterior of the ledger, leaving a 2- come 2 1/2-inch space. Even if the wall doesn’t fail, the brick courses deserve to deform under a wind load, bring about cracks to develop in the veneer.
There are ways to prevent this. You deserve to specify the right-size ledger, or you deserve to hold the brick back from the edge. One more option is to usage a commercial kind of tie, like a base and vee tie, which is rated to span 3 customs or more.
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Tim Kampert is a building performance specialist on the execute Builder services team in ~ IBACOS.