Find a Driveway Installer you can trust in Stamford.

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.

Pitting, also referred to as spalling is the event whereby “pits” or small holes start showing on the surface of your concrete driveway which makes it appear both worn and uneven. Concrete driveway pitting is a common but highly frustrating problem for most homeowners. You’ll see some concrete driveways that’ll only start to pit after a couple of years, but this is not true for all concrete driveways as others will start to show signs only after a couple of months. So how do you tackle this issue? Well, it’s relatively simple to tackle, however if you’re not confident or lack the necessary skills, we’d recommend you get in touch with a reliable professional who can guarantee the best results for help. In this guide, we’ll take you through the concrete driveway pitting repair process.

✓ Prepare the pits by cleaning the area, clearing out all debris and more. The small pits can be cleaned with a stiff brush while a sturdy broom will do a good job for larger pits.

✓ Make use of a hose to spray the concrete pits and flush out all remaining bits of waste.

✓ If you’re tackling series of small pits, simply use a caulking gun filled with pre-mixed epoxy and specially formulated for concrete to fill the pits. Clear off the excess eproxy ensuring that its level with the concrete surface. Once done, simply leave for at least 24 hours before the application of a concrete sealant to prevent the wear and tear of the new concrete.

✓ Chisel out a little concrete and clean with a pressure washer. Once done, apply a concrete resurfacing compound mixture into the holes and use a trowel to level off.

✓ Ensure that the repaired concrete driveway is protected from rain and foot traffic for at least 6 hours (or 24 hours for vehicles).

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.

It’s up to you what size gravel you use for your driveway, but there are some guidelines that are worth following. If you go too small, your gravel will get displaced easily. But, if you go too big, you driveway might be quite tricky to walk on. Generally, it’s a good idea to go for a gravel size somewhere between 10-20mm.

There are several effective ways to clean paving slabs. It’s important to pick a method that suits you and your paving material.

Whatever method you use, start by removing all weeds and loose debris from your paving. Then, if you have a pressure washer, you can simply use this to clean away any dirt.

If you don’t have a pressure washer, you can try using soapy water or watered-down bleach. If you use soapy water, mix a mild detergent like washing up liquid with warm water. Then pour it onto your paving, work it in with a brush and rinse it off with clean water.

If you use bleach, first make sure that the water won’t drain off onto any plant life, as this can kill it. You should also avoid using bleach on concrete slabs, as it will cause them to fade. Mix one-part bleach with five-parts water, pour it onto your paving and work it in with a brush. Then leave it for 15 minutes and rinse it off with clean water.

Do you know why paving slaps is a popular choice for both driveways and patios? Well, it’s the versatility! With its durability, diverse colour range, different styles as well as a timeless appeal, paving slabs happen to be a common choice amongst home owners. However, you should know that redeeming these benefits is not as simple as shovelling mortar and pressing down the paving slabs, and neither is it a case whereby you can just copy the laying process of a porcelain paving or block paving. Laying of paving slabs is on a whole other level! As a result, we’d recommend employing a trustworthy professional who can guarantee the best results the first time, especially if you lack proper training or experience to complete the task. In this step by step guide, you’ll discover more about the paving slabs laying process.

• Prepare your paving foundation. This includes checking that your foundation is level, marking out the area to be paved with wooden pegs, removing all vegetation and top soil to a depth of about 200mm to 250mm and raking the area level to ensure and even depth.

• Mix a layer of mortar for each paver and apply the mixed mortar onto the sub base by using the trowel.

• Lay the slabs on top of the laying course at the lowest point of the area to be paved.

• Take note that you may need to cut some slabs depending on the paving area size, your chosen slabs and the pattern selected.

• Once done, brush the area clean and start jointing. The best way to do this is by applying kiln dried sand to the paved area and carefully brush into the joints with a brush.

• Push the sands into the joints using a plate compactor

• Check the paved area for any gaps and fill where necessary.

The most commonly used driveway surfacing materials are gravel, asphalt, concrete and paving - which can be block, slabbed or patten imprinted. Take a look at our product information pages to help you decide which one to use and which one will look best for your driveway.