How to fix broomed concrete?
Last Update: April 20, 2022
This is a question our experts keep getting from time to time. Now, we have got the complete detailed explanation and answer for everyone, who is interested!Asked by: Yolanda Haag
Score: 4.8/5 (14 votes)
A. There are two things you can do fix the rough finish. One is, you could grind or polish the surface which would remove the rough broom finish and smooth the surface of the concrete. Some of the aggregate would be exposed giving you a nice smooth decorative look to your sidewalk and patio.
Can rough concrete be smoothed?
Smooth rough concrete with concrete resurfacer. ... Over time, wear and tear, such as from foot traffic and water erosion, can leave your concrete floor looking rough and bumpy. Avoid having to smooth rough concrete with an aggressive concrete grinding machine and choose instead to resurface the concrete.
Why does concrete get broomed?
Bleed water is a result of the wet concrete settling and with entrained air, it doesn't settle much and therefore little water comes to the surface. ... PCA's Cement Mason's Guide says to use a damp broom after troweling. Broom the surface. Run a concrete broom perpendicular to the slope, if there is one.
How do you fix rough concrete?
Fill the damaged areas with epoxy resin to the surface level of the surrounding concrete floor. Use a putty knife to fill the crack or hole in the concrete, and then level the top of the resin with the floor using the knife. Allow the patch to dry overnight.
Can crumbling concrete be repaired?
Crumbling concrete can be repaired before crazing occurs. Crumbling concrete is not just unsightly, it may also be a sign of serious damage beneath the structure. Address the problem as soon as possible to prevent it from spreading or causing other damage, such as crazing, in which a network of random cracks occurs.
How to Broom Finish a Concrete Slab
How do you smooth uneven concrete?
If you have a mostly level surface with just a few minor holes and cracks, use an epoxy coating you can apply just like paint. On the other hand, if your cement floor is extremely uneven or has large holes or cracks, you will need a leveling compound to smooth it.
Do you need to float concrete?
Float the concrete when you're done grooving and edging (Photo 6). Floating removes the marks left by edging and brings the surface one step closer to a final finish. You may have to bear down on the float if the concrete is starting to harden.
How long does it take concrete to dry?
Concrete typically takes 24 to 48 hours to dry enough for you to walk or drive on it. However, concrete drying is a continuous and fluid event, and usually reaches its full effective strength after about 28 days.
Is there a sealer for concrete?
There are two main types of concrete sealers: film-forming sealers and penetrating sealers. Film-forming sealers include acrylics, epoxies, and urethanes that form a coating on the surface of the concrete. Film-forming sealers, especially acrylics, are more susceptible to wear and will need to be reapplied frequently.
Can I sand concrete?
As you can see, while you can use regular sandpaper to sand concrete, it is not recommended. Using regular sandpaper, even with a sander will take a significant amount of time and will use up a lot of sandpaper. Instead, we would recommend using a grinder or diamond sandpaper.
Can you epoxy over rough concrete?
Epoxy Installation over Very Rough Concrete Floors
Proper surface preparation is imperative to a successful installation of any epoxy. If the floor is excessively rough, in addition to proper surface prep above, it should be ground as flat as you can reasonably make it.
Is it better to spray or roll concrete sealer?
For large scale applications sprayers are faster and more efficient; whereas paint rollers are less expensive and are more readily available. If you are going to be applying a decorative acrylic sealer or an epoxy floor coating it is best to use a 1/4″ or 3/8 nap roller.
Do concrete sealers really work?
Today, high quality concrete sealers can block up to 99% of surface moisture. ... The chemical reaction bonds active ingredients within the substrate blocking surface moisture. Penetrating sealers generally do not significantly modify substrate appearance or traction. Lifespan is generally 5 years or more.
Can I put sealer on fresh concrete?
Allow new concrete to cure completely (at least 28 days or as recommended). Most sealers must be applied under dry conditions. Applying to damp concrete could cause haziness or loss of adhesion. Air temperatures should be above 50°F during sealer application and for at least 24 hours after.
Is it OK if it rains after pouring concrete?
Pouring Concrete in Rain. ... Pouring concrete in the rain can compromise its strength, increasing the tendency for dusting and scaling to develop. Once the damage is done, it can be hard to rectify and will often ruin the appearance of the finished surface. Don't let it rain on your parade.
Can I drive on concrete after 3 days?
Your new concrete is designed to reach 90% of its full strength potential after 7 days, so feel free to drive your personal vehicle on it then. It will take additional time before you can drive or park heavy equipment or machinery on your newly poured concrete, so make sure to wait at least 30 days.
Should you wet concrete while curing?
ANSWER: Keeping concrete moist helps the curing process. ... If too much water is lost from the concrete through evaporation, the hardening process slows down or ceases. Concrete continues to gain strength after pouring for as long as it retains moisture, but the longer it moist-cures, the slower the rate of strength gain.
How many times do you float concrete?
Push the bull float in one direction only across the concrete, keeping its front edge slightly above the surface by raising or lowering the handle. Two or three times is enough. Don't overwork the concrete or you'll weaken it by drawing too much sand and cement to the surface.
How long do you wait to float concrete?
Allow all of the water to disappear before you do anything else. This can take 20 minutes or 4 hours depending on the temperature, humidity and how hard the wind is blowing. After the bleed water is all gone, you can get out your steel finishing trowel and put on the final touches.
How many times do you bull float concrete?
Frequently two passes with the screed is necessary to achieve desired grade. If you are going to be pouring a large slab with a width of 15' feet or greater it becomes difficult to strike off this much concrete. Even at fifteen feet you will need three people working the screed.
Can you pour self leveling concrete over existing concrete?
You can level an existing concrete floor with a leveling layer of new concrete, but you must prepare the old concrete floor first. Neglecting to prepare the old surface will prevent the new concrete from adhering correctly, resulting in a weak bond between the two layers.
Can you grind concrete to level it?
If you have an uneven concrete slab, you could replace it or cover it with leveling compound. But consider grinding it instead. Powerful grinding equipment is available at rental centers that cater to contractors. ... Grinding down leftover thin-set or other hard coatings.
Can you put too much sealer on concrete?
When the sealer is applied too heavily, the air displaced through the surface can't escape, and it forms a bubble in the sealer surface. ... Bubbling of a sealer can also occur if application is done in hot weather, or if the concrete is in direct sun.