![]() ![]() 1.5 parts / measures of Portland cement.If you're going to use hydrated lime as well, and I suggest you do, here's the mix I'd go with: For extreme strength and stickiness, you can mix one part sand to one part Portland cement. ![]() The repair material should be mixed no less than two parts sand to one part Portland cement. Get creative!ĬLICK HERE to get FREE & FAST BIDS from local block contractors that can repair your block or stucco. You can't have too many anchors.ĭrive them in with a hammer or drill into the hole with a rotary hammer drill and drive the anchors, bolts or even short pieces of rebar into the holes. Have at least 2 inches of bolt showing so the repair material can really get a good grip. These are anchors, or posts, that the repair material will surround. If there are deep holes to repair, the repair material will hold decades if you install downward angled long galvanized bolts into the hole. You’ll want the block to be slightly damp when you start the repair, so washing it will not hurt the repair process. Washing the concrete block is also a good idea flooding it with water and scrubbing the area at the same time. I prepare the concrete block by removing all loose material. Click the above image to order the hydrated lime. But adding hydrated mason's lime will make it even better. Portland cement on it’s own, when mixed with sand, will create a repair material that can last hundreds of years. What is the Primary Adhesive in the Repair Material? It's a fine white powder and it's going to look great on your home. Use hydrated lime in the mix because it really makes the repair mix sticky. I prefer to make my own repair mix using just medium clean sand and pure Portland cement. ![]() Here’s how I’d repair your damaged stucco or the face of the concrete block. Scrub, rinse and make sure the old masonry is clean and free of dust and grit. The longer you let it soak, the less you have to scrub. Keep the masonry wet with the solution for at least 15 minutes. ![]() You'll see it foam and bubble if you look closely. Keep the area very wet with the solution spraying more on every few minutes. Saturate the area to be cleaned working on an overcast day if possible. Stir until dissolved and put into a hand-pump sprayer. It's a powder you mix with hot tap water. I use Stain Solver, a certified organic oxygen bleach, to get mold, algae and other dirt from concrete block or stucco. No, your new repair material will not stick to dirty concrete block or that covered with algae or mold. Stain Solver is MADE in the USA with USA ingredients that are food-grade quality. This means you need to remove any loose crumbling material to a depth by scraping with a stick that to remove more material you need a chisel and hammer. When you decide to repair the vertical face of stucco, concrete block or even concrete, the surface needs to be clean, dust-free, and structurally sound. There list of reasons could be long, but we’ll just concentrate on the ones that are at the top of the list. Let’s discuss why your previous repair attempts failed. The good news is this is very easy to repair. If the inside of the block looks good, then I feel confident your problem is just a cosmetic defect in the block. You can look at the inside of your foundation and see what kind of condition the block are on the side that faces your basement or crawlspace. When concrete block were first brought to market, it didn’t take the block manufacturers long to realize they could make the outside of the block look fairly decent as if the block were fancy cut pieces of limestone or even granite.ĬLICK HERE to get FREE & FAST BIDS from local block contractors that can repair your block or stucco. Airy, MDĭEAR LYNN: If each of the concrete block looks similar with respect to the exterior pattern, I would say the block were made that way and it’s not a stucco coating. Can the damage be repaired? How do you get the stucco to stick onto the block and not fall off? Each time I’ve tried to do the job, the repair material falls to the ground. Some of the exterior is crumbling and I wonder if my foundation is going to fail. I think the outside of the block has a decorative stucco on it because the exterior of the block is not smooth. CLICK HERE to Get Tim's FREE & FUNNY Newsletter!ĭEAR TIM: I live in a house with a concrete block foundation.Fill deep holes in stages - install galvanized anchors.Use cement paint for best bond of repair mix.Remove algae with Stain Solver for best repair bond.Photo Credit: Tim Carter (Bricks were white, but turned blue in the photo.) Repair Concrete Block and Stucco Tips Great crumbling concrete foundation diy fix tips can be found on this page too. The damage is superficial and can be repaired with ease. Repair Concrete Block | Here’s some older crumbling concrete block that resembles cut stone. ![]()
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