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Can You Lay Block Paving On Top Of Concrete?

The replacement or improvement of your driveway is unarguably one of the most expensive projects you can undertake in the exterior of your home. When done by a true professional the results can be impressive and visually appealing, however you’d have to pay huge bucks to have this done. This is exactly the situation with block paving as it is not only time consuming, but also a lot more expensive when compared to other types of driveway.

A large chuck of this cost is associated with the removal of the existing driveway. So assuming your old driveway is concrete, can you simply pave over the existing concrete? If yes, will it save you money? The simple and short answer is yes. It’s in fact advisable to pave over concrete as this will not only add around 20% to your home’s value, but also make it look a lot more attractive and pleasing to the eye.

However, there are some problems associated with block paving over concrete. It may be better to remove the concrete in situations whereby the base is substandard. For instance, if the ground underneath the concrete is failing, there’ll most definitely be problems.

Also, there’ll be some issues with settling (not even the cracks). If your concrete is dropping little amounts every year, these can affect the blocks and ultimately lead to dropping of some sections of the block paving in such a way that they’ll no longer be on the same level as the other blocks. Giving a rise to the possibility of drainage issues, tripping hazard and lots more.

Other issues that may crop up can be triggered as a result of using the wrong size block height as well as totally ignoring or overlooking the undulations of the concrete.

How To Lay Block Paving

Do you wish to know how to install block paving? We’ve got you covered! Here, you’ll find a useful step by step guide that’ll provide you with all the necessary information to lay a wide range of block paving products available in the market today. You must, however, note that the installation of block paving can be a tricky affair and should not be attempted unless you have undergone a proper training or have a good experience in the field. If otherwise, we’d advise you to leave the task for a reliable block laying professional to guarantee the best results and also avoid making costly mistakes.

lDesign

• Draw up a design to perfectly suits your needs.

• Decide on the type of block as well as colour.

lExcavation

• Use a mini excavator or a JCB ( depending on the size of the job) to excavate the driveway.

• Identify and mark out the area to be excavated.

• Dug out the area until you reach a suitable level

• Ensure that the proposed finish level is 150mm underneath the damp proof course in any of the adjoining building’s brick.

lEdge Restraints

• Build a 100mm depth-thick concrete foundation with the help of a concrete mixer, 1 part cement and 6 parts ballast.

• Position the kerb unit on top of the level with a string line and spirit level.

• Use a trowel and rubber mallet to mortar the kerb unit to the foundation.

• Haunch the back of the kerb units in such a way that the concrete reach half way up the kerb’s rear.

lSubbase

• Put the crushed concrete in the edge restraints and ensure it’s at the desired level of 50mm.

• Use a vibrating plate to compact and level

lScreeding

• Apply a layer of sharp sand (to 50mm depth) and campact it using a vibrating plate.

• Apply second layer of sharp sand (to 20mm depth) on top of the first layer.

• Level the second layer to the correct falls.

lInstallation Of Paving

• Lay the block paving starting from the bottom of a slope.

• Ensure the blocks are placed at about 10mm to 15mm above the required finish level.

• Make sure the blocks used are between 3-5 packs as you proceed with your desired pattern. You may need to cut smaller block pieces to fill smaller gaps.

lFinishing Touches

• Clear out the area to ensure no debris is left on the blocks.

• Put kiln dried sand and brush across the whole of the area, ensuring the sands falls between the blocks’ joints.

• Compact the drive with the vibrating plate.

• Brush more kiln dried sand over the area and compact again

• Repeat the process until the joints are full of sand.

How To Repair A Pothole In Gravel Driveways

When the integrity of your gravel driveway is impaired not only does it have a negative impact on the curb appeal of your property, but also makes your driveway a danger zone. If your driveway needs to be repaired, you’d simply have to grab the bull by the horn and get it done - the sooner, the better to avoid the problem getting worse and to have your beautiful gravel driveway back as soon as possible.

The major cause of potholes in driveways is usually water, when it gets trapped beneath the surface of the driveway. Therefore, you may also want to enhance the drainage in the area as part of your repair. The repair process is quite simple for confident do-it-yourselfers, but if otherwise, then calling in a reliable professional will save you some time and extra money that can result from possible errors. So how do you repair gravel driveway potholes?

✓ Prepare the area. This involves removing all forms of debris from the pothole. To achieve this, you can rake, shovel or brush the loose stones, soil and other debris from the pothole.

✓ Fill the pot hole. Make use of a coarse gravel to fill up the pothole to a depth of about 3 inches beneath the driveway’s level. Upon the filling, simply tamp down the coarse gravel using a commercial tamper or any available homemade option. Once done, the final 3 inches to the surface of the gravel driveway should then be filled up with gravel which perfectly matches the colour and texture of the remaining driveway.

✓ Compact the patch. To achieve this in an easy and fast way, simply run your car’s wheel up and down over the repaired spot gently a couple of times. This will be enough to compact the patch and seal the pothole.

There’s no doubt that weeds coming through your block paving can be unsightly and annoying. But, it’s relatively easy to get rid of weeds that are growing in the joints between your block paving. To start, pull out the larger weeds, and then you can use a pressure washer or firm bristled brush to remove the smaller weeds and debris from the joints in your block paving. It’s best to then refill the joints with additional sand to ensure your block paving remains level. Regularly brushing your block paving and treating with weed killer will help to prevent the weeds from reoccurring.

If your concrete driveway’s looking grubby, it’s best to try cleaning it with water and a brush, or a mild detergent. However, if this doesn’t work, it can be worth trying bleach.

Dilute your bleach down to 50% bleach and 50% water, and apply it to your driveway. Leave it for 10 minutes, then scrub it using gloves and a stiff brush. Finish by rinsing your driveway off with clean water.

It’s important to remember that bleach can stain certain surfaces and kill plants. So, if you’re concerned about materials and boarders around your driveway, it might be best to use a different type of detergent, like floor cleaner or degreaser.

Spreading gravel on your driveway is usually pretty easy. Tip it into dispersed piles over your driveway area and then use a rake to spread it out evenly. If you’re creating a particularly large driveway and are getting your gravel delivered, you might be able to get help from your delivery driver.

If you’re considering laying gravel on your driveway, then you’d probably want to know the amount of gravel you’ll need to complete the project. When you are calculating the amount of gravel you’ll require to cover your driveway, there’s an important factor you’ll need to consider and that is the type of gravel you opt for such as a crushed or pea gravel. There are varying grades which are found in particles from fine to course, with a size ranging from 2mm to 64mm. Therefore, there’s a need to estimate the volume of the gravel while also having the rock’s size in mind. Also, there’s a need to select your most preferred gravel which you’ll like to use before proceeding to dig the depth of your driveway and subsequently determine the amount of gravel that’ll be needed using these excellent tips.

✓ Determine the size and coverage. As you would have expected, the smaller the gravel is, the bigger the coverage will be, and gravels should be at least 4 inches deep. However, if the rocks happen to be a bit large then you can allow for an extra 1/2 inch.

✓ Measure the driveway. Multiply the width by the length and depth to get the size of the driveway in cubic feet. Meanwhile for cubic yards, you can divide the total cubic feet by 27. This is due to the fact that one cubic feet is same as 1.13 tons.

✓ Working with gravel. Here, you’ll have to calculate an underlay measurements differently. You can use 2 inches of road base that’ll be overlaid with 2 inches of gravel.