Alas, after rain the spots are back again as if the sealer had still not penetrated all the pores. When it dried, it had dark lines/patterns all over it. This article was co-authored by Gerber Ortiz-Vega. A few days after rain, the concrete had a spotted appearance (the area under cover and not rained on was OK). I thoroughly enjoyed the article. By waiting until the concrete has dried sufficiently, you won’t be trapping excess moisture when applying the stain and sealer. For example, had to put the brand new fridge on the ground and roll it into the refrigerator cabinet..it dug through the finish and down to the bare concrete. If it is a Portland cement based mortar, I would think the 10 days of tarping should have been sufficient for the mortar to set up. Most other options would be done knowing continuous repairs were going to be necessary to keep the floor in one piece. Wondering if there are any issues with bubbling with water based semitransparent stain and what brand is recommended as I’ve read some horrible reviews on the big store brands. Always wear a dust mask, safety glasses, and work gloves. Instead, clean it out and choose an appropriate patching compound. Step 4 - Wash the Floor. However, certain other factors, which may be unique to your project, should also be taken into account. We had our 16 year old driveway resurfaced and stained last January. It happens every time it rains. Question – is it too soon to have the stain applied? We've been helping billions of people around the world continue to learn, adapt, grow, and thrive for over a decade. Moisture in concrete can come from two main sources. As far as the color, the best I can say is the “brown” areas may just be areas with more moisture and, when they dry, the color may lighten. You can preserve your design and the concrete with proper moisture testing before stains and sealers are applied. Hope this helps you before you waste time and additional money or things you don't need. Can it be fixed without stripping it down to the concrete? Please consider supporting our work with a contribution to wikiHow. Good luck. Our house is an open concept so the lower level is open to the rest of the home. The exact cause isn’t clear, but the most popular explanations attribute the undesired color change either to oxidation or a fungus, both of which can happen with excess moisture. He doesn’t know if anything will help, but says it should fade with sun and weather “over the years”. Yes, the concrete needs to be as dry as possible before sealing. We can’t stain it yet, because everyday it’s raining again and now it’s uncovered as it just sits. Recently we had someone do a decorative stain and seal on the floor. If a stain is already flaking/chipping as a result of a high RH in the slab prior to sealing would the introduction of water to the surface exacerbate the problem? We use cookies to personalize your shopping data and ads. I have a question. The house that had the antique gray applied has no issues at all. I wanted a white screed finish . As far as a finish, most would say smooth, but not burnished. Thanks for the question. Let’s just say long term, there is no real way to effectively mitigate the excessive moisture issues as a whole that would negatively impact concrete floor finishing applications. This is our first floor we’ve ever done. I would find a knowledgeable supplier of sealers and have a discussion with them regarding best material type sealer to use for this situation. Per the rental agreement we are only allowed to use Bona floor cleaner and water on the floors and they require the floors to be refinished every 6 months. Part of the reason is that there are hard mineral deposits where I have had large planters. Glad I found this. Push the mortar deep into the hole at first, then add more layer by layer. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2021 wikiHow, Inc. All rights reserved. Good luck. Is there anywayay of staining old house floors that are consistently damp. Layering mortar is only really useful if you’re working with a deep hole, such as one more than 1 in (2.5 cm) deep. For vertical surfaces, try dragging a board down over the hole and then going back over the patch with a trowel. Today my floor had lots of cracks and my screed is turning brown in some areas. If your concrete patch sticks out after it has cured, roll a concrete grinder over it. wikiHow is where trusted research and expert knowledge come together. I can’t give you a product recommendation, but I can give some advice. Check the manufacturer’s instructions for more information. You can always add more water, but you can’t remove it. Gerber specializes in providing brick and stone laying services, concrete installations, and masonry repairs.

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