Can you put more concrete on top of old concrete?
Yes, you can pour concrete over concrete if the existing concrete is structurally sound. Old concrete makes a very good sub-base if it's not settling or heaving Everything About Concrete
How to do stamped concrete on an existing slab?
Stamped Concrete Step-by-Step Overview
- Subgrade Preparation. The subgrade makes a big difference in the overall performance and structural integrity of the slab.
- Placing the Forms. Forms, made from wood, metal or plastic, are attached to stakes to contain the concrete in the area desired.
- Installing Reinforcement. ...
- Placing the Concrete. ...
- Screeding and Finishing the Concrete. ...
- Applying Color. ...
Can you do stamped concrete over old concrete?
You can only stamp concrete when it is still wet from a pour. To add texture to an existing patio, pour a fresh layer of concrete over the old and stamp it, provided the existing patio is in good condition. When you pour a new layer of concrete over an existing patio, the integrity of the new surface will only be as good as the one beneath it.
How soon can I tile over new concrete?
or if using a screed, do cement pad, wait 1 day then screed, wait 2 days then tile, so 3 days wait all up again. I asked if you can go quicker if you use quick setting concret product, he said no as its too crumbly for this type of job just use standard cement product and wait the 3 days.
Can you put stamped concrete on top of concrete?
CAN YOU DO STAMPED CONCRETE OVER OLD CONCRETE? Stamped concrete overlays can be used on new or existing concrete and on interior or exterior surfaces. They can even be applied to walls and other vertical surfaces.
How do you stamp overlay concrete?
2:2018:51Your browser can't play this video. Learn more - YouTubeYouTubeStart of suggested clipEnd of suggested clipSimple all i want to do is take your standard paint roller grab an extension rod and start applyingMoreSimple all i want to do is take your standard paint roller grab an extension rod and start applying it to the concrete. Surface just make sure your concrete is as clean as possible at this point.
Can you're stamp concrete?
Typically, you'll need to etch the surface to make the new concrete adhere better and apply a chemical to help the two surfaces bond. The overlay is applied in a thin coat, allowed to set for a short period of time, then stamped to create a new surface.
How long does stamped concrete last?
about 25 yearsProvided it's installed correctly and adequately maintained, stamped concrete will last just as long as non-stamped, or standard, concrete—about 25 years. That's because the processes of installing stamped concrete and standard concrete are mostly the same.
Can you put a thin layer of concrete over concrete?
Is it okay to pour concrete over existing concrete? Yes, you can put new concrete over old concrete providing there are no issues such as significant cracks of frost heaves with your existing concrete. A new layer of concrete should be about two inches to ensure an even, strong coverage.
Do concrete overlays last?
Concrete overlays typically last 10-15 years but can last up to 25+ years if well-applied and maintained. The overlay material quality, the amount of prep work done to the concrete, and the amount of regular maintenance can impact the lifespan of a concrete overlay.
How do you fix a bad stamped concrete job?
I recommend wetting color patch materials with a 50:50 blend of concrete bonding polymer and water. Use a wooden tongue depressor or gloved finger to smear the color patch into the cracks. Soften the edges with a damp rag or sponge to blend the patch and color into the slab. Let these repairs cure for 24 hours.
Can I recolor my stamped concrete?
You can make old stamped concrete look new again with recoloring. You can also change the color of stamped concrete if you are unhappy with the current shade.
How do you renew concrete surfaces?
0:394:28How to Resurface Concrete - YouTubeYouTubeStart of suggested clipEnd of suggested clipBefore resurfacing your slab deeply spalled areas and large cracks should be repaired using concreteMoreBefore resurfacing your slab deeply spalled areas and large cracks should be repaired using concrete resurfacer that has been mixed to a triable consistency.
What are the disadvantages of stamped concrete?
Although stamped concrete may be simple to clean and requires no maintenance to retain its patterned appearance, one of its major disadvantages is that it lacks durability compared to other finished surfaces.
Does stamped concrete crack easier?
Stamped concrete is highly resistant to cracking when installed correctly. Even if stamped concrete experiences minor cracking, the cracks are often hard to detect because they will often blend in with the pattern and joint lines.
Is stamped concrete worth the money?
Many homeowners wonder if it is worth the cost to install a stamped concrete patio or driveway. The answer is yes, because it adds curb appeal and aesthetic value to your home, allowing you to maximize the return on your investment.
What is stamped concrete?
Stamped colored concrete is a premium flooring and paving option with a wide range of benefits that make it a desirable alternative to pavers, standard concrete, and stone. Stamped concrete is created using specialized texturing tools. While it is still plastic, concrete is imprinted using these tools. This creates permanent patterns and textures ...
How long does it take to remove reinforced concrete?
Demolishing and removing reinforced concrete can take several hours for just a couple hundred square feet. There is also additional labor and cost associated with disposal and demolition equipment rental. All of this adds thousands of dollars and hours of labor before the new slab is even started.
Do you remove loose material before overlaying?
Any loose or weakened material must be removed before the overlay is installed. The surface should also be free of contaminants that would prevent a bond from forming. Reference the technical information sheet for the chosen overlay and surface preparation guidelines from ICRI before you begin.
Can skid steers destroy landscaping?
On top of the added labor and cost, demolishing existing concrete has the potential to damage surrounding areas. Skid steers and earthmovers will destroy landscaping and grass.
Is a slab good for a subgrade?
As with new placement, the slab is only as good as the subgrade. In this case the subgrade is the existing concrete slab! First, carefully inspect the concrete for damage. Any significant structural damage will cause problems later on. Examples of significant damage include large cracks, settling, and massive surface deterioration.
Can you put stamped concrete over existing concrete?
Fortunately, it is possible to place stamped concrete over existing concrete. Stamped concrete overlays are durable options for upgrading, repairing, and enhancing existing concrete.
How long does stamped concrete last?
When applied properly, a stamped concrete coating should last for years. It will help add strength to an existing surface, while also updating the look. Much like a newly poured patio, your overlay will need to be sealed every few years to maintain its appearance and protect it from damage.
What is stamped concrete overlay?
Stamped concrete overlays allow you to duplicate the beauty and texture of natural stone, brick, slate, wood, and other materials without having to replace your concrete. A stamped overlay can be used indoors or outdoors to recreate the look of natural stone, brick, slate, or even wood.
What is overlay concrete?
An overlay acts in a similar fashion to new concrete, in that it has a limited time available for it to be stamped. A contractor can complete the job on time, without error, and with a final finish you will enjoy for years to come.
How to change the color of a sandpaper?
Here is a quick guide to the color adjustment levels: 1 For minor color adjustment use an impregnating stain or diluted acid stain 2 For medium color adjustment use a full-strength acid stain, dye, or tinted sealer 3 For complete color change use an acrylic or solid-color stain
How much paint do you need to remove to put concrete over?
If the concrete is painted and you're pouring less than 3 inches of new concrete over it, you have to remove the paint (pressure wash it or grind it off) then apply a bonding agent to "glue" the new concrete to the old.
How thin can you pour concrete?
You can pour as thin as 1.5 inches over the old concrete. Remember, concrete has aggregate in it (rocks). The smallest rock size is about 3/8 inch. If you pour any thinner than 1.5 inches you don't have enough cement paste over and around the aggregate to get strong concrete.
What bonding agent is used to bond concrete to old concrete?
Newly poured concrete will stick to old concrete if you use a bonding agent called Weld-Crete. Weld-Crete is a "glue like" bonding agent designed specifically to bond new concrete to old concrete.
Can you put paint over concrete?
Yes you can, if the new concrete is 3 inches thick or more. When pouring concrete over concrete, if the new concrete is less than 3 inches thick it's best to bond the new concrete to the old concrete. If the concrete is painted and you're pouring less than 3 inches of new concrete over it, you have to remove the paint ...
Can you pour concrete over existing concrete?
The simple answer is YES, you can pour new concrete right over existing concrete. But, there's some things you have to take into consideration before you make a final decision. Is the existing concrete structurally sound? How you determine that, could be the most important part to answering that question.
How thick should concrete be before stamping?
You may need to ask a few helpers to assist you to help with the process of laying down the new concrete and stamping it. The concrete should be about 2 inches thick and be quick to make sure the new concrete is leveled and smooth before using the stamps. That is when your helpers will be of assistance to you.
What happens if you replace old concrete with new concrete?
If you do pour new concrete on the old concrete, you are risking the chance of getting deep potholes.
How deep should I drill holes in concrete?
Drill ⅝ diameter holes to be 6 inches deep into the old concrete. Be sure to drill the holes 12 inches on center. Place the holes horizontally if the joint is wider than it is tall, but place then vertically if it is taller. Be sure the holes are at least 6 inches from any edges to prevent any chipping.
How much rebar do I need for a concrete driveway?
Heavy concrete will, of course, use heavier rebar, but smaller concrete such as sidewalk or driveway will only require about half an inch of rebar. Here are the steps to make sure you bond new concrete with old concrete correctly: Drill ⅝ diameter holes to be 6 inches deep into the old concrete.
Why is it important to add a layer of separation between two slabs?
It is important to add a layer of separation between the two slabs for flexibility and longevity. This layer of separation can come in the form of stones, sand, or even plastic. However, plastic isn’t recommended for anyone trying to protect the planet.
How thick should I pour concrete?
In addition, you must pour it at least 2 inches thick. Pouring new concrete, no matter the circumstances can be more of a headache than anticipated if you’re not careful.
Why is it important to seal concrete?
The fluctuation of the temperatures will cause lifting of the concrete which will cause cracks and separation. As soon as you spot damage, make sure to patch them immediately to avoid any spreading. It is also important to seal the new layer and prevent any water damage by using a deep penetrating sealer.
