Installing Concrete Stair Treads
Concrete stair treads – Concrete treads are a rugged tread material with a rough surface to improve the grip on the stairs. Concrete treads are prefabricated to fit within stringers in a metal staircase. Bolt-on treads are a simple design solution for the do-it-yourself homeowners because they require no mortar for installation. Instead bolts attaching treads of the angle tabs on runners, which are welded in place at each tread spot. A metal handrail attaches concrete treads with a base plate and anchor bolts, which guarantees safe stair use.
Align the bolts on the concrete treads of fixing holes in the metal angle tabs and lower the concrete stair treads in place. The treads are prefabricated with bolts in the concrete, so there is no need to drill and put bolts. Tighten the nuts on the bolts from the underside of each step. The nuts must be of the same size as the bolts used, usually 3/8 to 1/2 inch nuts.
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Tighten each nut with a wrench until secure, but not the nut. Over tightened nuts put too much pressure on the concrete stair treads, which increases the risk of cracking the treads. Continue to install concrete treads, working from the bottom to the top, until all the treads are installed.