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- Related Articles
- Do’s and Don’ts of Paver Installation: Step 1 of 3 – Pre-installation and Planning
- Do’s and Don’ts of Paver Installation: Step 2 of 3 – Base Preparation
- Why Hiring a Reputable Landscape Contractor Makes All the Difference
- Step 5: Vibrate the Pavers
- Initial Setting and Lock-up:
- What About a Free Estimate?
- Step 1: Preparing the Base
- Excavate the Site:
- Fill and Compact the Base:
- Which Material Can You Use Between Concrete and Pavers?
- 4. Lay geo filter fabric over your concrete
- Safety Considerations
- How to Install Patio Pavers Over an Existing Concrete Slab
- Mortar or Concrete Mix
- Spread a flat bed of sand
- Spread fabric, then sand
- Pavers Over Concrete: Assemble the materials
- Figure A: Pavers Over Concrete Slab
- Get a FREE quote on your paver installation!
Do’s and Don’ts of Paver Installation: Step 1 of 3 – Pre-installation and Planning People don’t realize the amount of work involved with the installation of our paving stones, I am not saying that to scare anyone off of their project but a little planning will go a long way. Unilock provides an excellent technical guide for the proper installation of pavers, so please refer to it for details. To avoid common mistakes, follow these steps: Read More Do’s and Don’ts of Paver Installation: Step 2 of 3 – Base Preparation It is now time to get your project started. Preparing a proper base is crucial for any paving stone project; again, you can refer to Unilock’s technical guide as well as take into account the following pieces of advice to ensure the pavers are being placed on a substantial base: Read More Why Hiring a Reputable Landscape Contractor Makes All the Difference Most people would agree, that the hardest part of any home renovation project, whether it be inside or outside, isn’t usually the work itself, but rather finding a reliable and reputable contractor to do the job. Read More
Step 5: Vibrate the Pavers
Once the entire paver field and borders have been placed, you will need to run a vibrating plate compactor over the paver project to being the interlocking process.
Initial Setting and Lock-up:
Rent a vibrating plate compactor from your local equipment rental company. Once the pavers and border have been placed, spread a light layer of sand over the pavers and make a single pass using this plate compactor.
This single pass will help set the pavers into the bedding sand, and cause some sand to move up between the joints of the pavers. This is the initial stage of the “interlock”.
What About a Free Estimate?
Do you want to upgrade your patio and lay pavers over concrete, but have no idea how much is gonna cost? What about a free estimate? If you live in Sarasota, Manatee, or any of our surrounding counties contact us, we will be glad to assist you!
S&S Pavers has over 10 years of experience serving the counties of Manatee and Sarasota.
Step 1: Preparing the Base
It is important to provide a well compacted, stable base on which to begin the paver installation. In some cases, this will require extensive excavation of unsuitable sub-grade material.
Excavate the Site:
Excavate all unsuitable, unstable, or unconsolidated sub-grade material. When estimating the depth of excavation, consider the final grade of the project. Add the height of the paver unit, the depth of bedding sand, and the thickness of the compacted base material to get an estimate of needed depth.
Fill and Compact the Base:
Thickness of Compacted Base:
- Pedestrian Traffic: 3″–4″
- Vehicular Traffic: 4″–5″
- Large Vehicular Traffic (e.g. motor homes): 6″–8″
Fill the excavated site with the appropriate amount of paver base material (Class II Road Base is recommended), and compact using a vibrating plate compactor. The base must be well compacted and level to provide a smooth, even surface on which to lay the bedding sand.
NOTE: When preparing the grade of the base, be sure to provide a 1/8″–1/4″ of drop per foot for proper drainage.
Which Material Can You Use Between Concrete and Pavers?
Although there are other types of materials, the answer to this question comes down to two options: Sand or bituminous.
The process of installing pavers over sand and bituminous is quite similar to the typical installation. The difference is that it’s necessary to place draining holes in the lower areas, giving the water that seeps into joints a place to escape.
In general, the two materials have very similar benefits and work well. However, in places where there is heavy traffic, the use of sand alone is not recommended. That’s because the sand can shift. The bituminous set is commonly used for high impact traffic areas such as crosswalks, as it helps prevent rotational failures of the pavers.
4. Lay geo filter fabric over your concrete
The main purpose of this geo filter is to retain any joint sand that might try to settle through the paving stones. It also helps retain any bedding sand used to split the difference of humps and bumps in the concrete.
You’ll want to cut it to size, trying to keep it in one piece as much as possible. If you need to cut smaller pieces for corners or to go around posts, just leave some overlap so you don’t have any exposed concrete.
You’ll also need to make sure you run the geo fabric up the sides of your border, including next to your house, if applicable, to keep any sand from migrating below the fabric in the next step.
Moving large amounts of heavy materials can take a toll on your body. Use a wheelbarrow. When shoveling, lift from your legs, not your back. Keep in mind that base materials (crushed gravel) are heavier than dirt, so use only partial shovel loads.
Wear breathing protection. Frequently spray the area with water to keep the dust down.
How to Install Patio Pavers Over an Existing Concrete Slab
When you want to learn how to overlay concrete with paving stones, you’ve come to the right place. This article will show you step-by-step how to dress up an old, cracked, or unwanted concrete patio by covering it with nice, eye-appealing pavers.Mar 2022
Mortar or Concrete Mix
Cement is the ingredient that forms the “glue” in both mortar and concrete mix. Both products can be used with pavers, but they have differing properties and installation techniques. A 4- to 6-inch-thick concrete slab is suitable as a base for pavers, which can be laid directly onto the wet concrete so they are held in place when it dries. Mortar can be used as a 1/2-inch to 1-inch-thick base under pavers as long as a 4- to 6-inch-deep layer of crushed rock is underneath the mortar to form a foundation. Mortar also can be used in the joints between pavers, just like grout is used between tiles.
Spread a flat bed of sand
Spread fabric, then sand
Lay down landscape fabric to keep the sand from washing down into cracks. Then position the screed pipe and spread the sand.
Pavers Over Concrete: Assemble the materials
The materials for this 12 x 14-ft. patio cost about $850, or $5 per sq. ft. Using less expensive pavers, you could cut the cost by almost half. Most landscape suppliers and home centers stock all the materials, but you may have to do a little hunting for the right combination of pavers. The pavers used for the border must be at least 3/4 in. thicker than the “field” pavers, which cover the area between the borders. That thickness difference will allow for a bed of sand under the field. A difference of more than 3/4 in. is fine; you’ll just need a little more sand. If you can’t find thick pavers you like, consider retaining wall cap blocks for the border. We used cement pavers (concrete patio blocks) for the border and clay pavers for the field.
To estimate how much sand you’ll need, grab your calculator. First determine the square footage of the sand bed. Then divide that number by 12 for a 1-in. bed or 18 for a 3/4-in. bed. That will tell you how many cubic feet of sand to get. You can have a load of sand delivered or save the delivery fee by picking up a load yourself with a truck or trailer. Most home centers also sell bagged sand. A 50-lb. bag (1/2 cu. ft.) costs about $3.
Figure A: Pavers Over Concrete Slab
This technique requires two types of pavers. Glue thicker pavers to the concrete on the perimeter and lay thinner pavers on a sand bed. The resulting look is one of our favorite patio block ideas.