At first glance, the seamless coat of stucco on the East Boston house looked as bulletproof as a sidewalk, the perfect foil against the harsh wet weather of this coastal city. Yet beneath its lush cloak of ivy, the cement shell was a mess of cracks and buckling, signs that water had gotten in and damaged the underlying wood lath. When properly installed, stucco a cement- or lime-based plaster is about as carefree and long-lived a cladding as anyone could wish— years is not uncommon.
But when big cracks or blisters appear, the time to make repairs is right away, before the damage grows. Antonio DiSilva of MJM Masonry performed the remedial work on the East Boston house over ten days, ripping off loose material and patching it with three separate coats. Here's how to make stucco repair that lasts. Freezing temperatures can ruin wet stucco. Wait for nighttime temperatures that stay above 40 degrees before tackling repairs.
Hot, dry, windy weather can also interfere by sucking out moisture the mix needs to cure properly. Work in the shade so the stucco doesn't dry too fast.
Between coats, keep the patch moist by covering it with a plastic sheet. The alkalis in wet cement can cause burns. So when working with fresh stucco, wear gloves or touch the mix only with your tools, not your fingers. Keep a bucket of water nearby to wash any splashes off your skin. No patch, no matter how expertly textured, will match the color of the old stucco around it. To do that, you need to apply a pigmented coating over the entire surface. The patch at this house was covered with a thick, sprayed-on acrylic elastomer that bridges and seals hairline cracks.
This article has been viewed , times. Learn more Stucco is a fine plaster that can be used as a coating for walls and other surfaces. One downside to stucco is that it can become damaged over time, needing a repair. This mixing guide is separate from the flow of the instructions because it will need to be done more than once. Whenever the instructions say to mix cement, reflect back to the mixing guide. The following will assume one full five gallon bucket of cement will be mixed. To patch stucco, start by removing any damaged stucco from the wall and pulling back the metal lath underneath.
Next, use a hammer and nails to secure a piece of double D tar paper to the hole, and seal the edges with rubber membrane. Then, secure a new piece of metal lath over the area with nails before applying cement to the patch with a trowel. Once the cement has dried, apply more wet cement over the top and spread it flat using a darby. Finally, rough up the surface of the cement using a wet float so that it matches the texture of the wall around it. Did this summary help you?
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Create an account. Edit this Article. We use cookies to make wikiHow great. By using our site, you agree to our cookie policy. Cookie Settings. Learn why people trust wikiHow. Download Article Explore this Article parts. Tips and Warnings. Things You'll Need. Related Articles. Article Summary. Part 1. Gather safety equipment. It is highly reccomended that you wear eye protection, a dust mask, and gloves. Gather your equipment.
See the Thing's You'll Need section below. Cover areas around the damaged Stucco. Place something along the lines of a tarp,over areas that could possibly get dust or soot on them while chopping. Part 2. Chop the Stucco. Use a hammer and chisel to break off the damaged stucco and lath from the sheathing of the wall, but you must leave some lath around the damaged area, as the new lath will be tied to the old.
The stucco should fall off fairly easily. If you wet down the wall, it will reduce the dust that comes off at this step. How to Patch Stucco. Recommended Products. Instructions Recommended Products Related Projects. How to Patch Stucco Step-by-Step. Product Recommendations. All-Purpose Stucco Patch Professional quality for repairs in stucco and textured surfaces. View Product. Related Projects. To finish, simply trowel on a latex stucco patch to fill the voids.
Instead, we recommend to either use a decorative finish over the existing render or remove and replace the existing render , however this may result in damage to the substrate. Step-by-step guide Carry out a thorough inspection. Re-set details. Apply key coat. Apply render. You can apply new stucco on top of old , so long as the proper measures are taken to ensure the integrity of the new layer. Check the existing stucco for structural integrity. Cracks are a natural part of any concrete-based product, and over time all stucco installations will have cracks.
These are not an issue. How much does a 5 gallon bucket of stucco cost?
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