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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.

Is your driveway damaged or starting to show some signs of cracks and gaps? If yes, then you’d probably be thinking of repairing it before it gets even worse. Repairing a driveway is largely an unknown process but also a very tedious task as well. So if you’re looking to hire a professional for help, just how much is the repair going to cost? In this article, we’re going to look at the various factors that can determine the cost of a driveway repair.

In the UK, the average price of repairing a driveway is usually within the range of £1,400 to £1,800, where as the normal price of a driveway repair will range between £700 to £2,400. although some small repairs tasks can be as low as £250, while huge driveway repairs can skyrocket to about £4,200.

However, in general, the overall cost of repair a driveway can not be determined as each driveway is unique with their special repair needs. The factors that can influence the price of a driveway repair includes the material used, the perimeter of the driveway as well as the condition of the foundation. The only factor that’s not unique to any one driveway is the materials used, so let’s take a look at the differences in price using the based on the various types of materials available.

✓ Concrete. The average cost of repairing a concrete driveway is usually between £250 to £3,200. Have it in mind at most times the price of fixing an overly damaged driveway can be more than the cost of buying a new one.

✓ Asphalt. The average cost of repairing an asphalt driveway is usually between £750 to £2,800.

✓ Brick. The average cost of repairing a brick driveway is usually between £700 to £1,700.

✓ Cobblestone. The average cost of repairing a cobblestone driveway is usually between £500 to £1,600.

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.

While many professionals will recommend a pressure washer to clean block paving, it’s possible to clean your paving without one – just scrub the affected areas with a firm bristled brush and use plenty of soap. Then, rinse off the area with clean water.

Do you want to know the level of thickness a driveway concrete slab should be? Well, you are not alone! So many other home owners ask this question on a regular basis and reasonably so. In order to prevent cracks on your concrete over time, it’s crucial to ensure an even thickness across your driveway concrete. To determine the necessary thickness of your driveway concrete, there are some questions that must be answered. These includes:

• What’s the number of vehicles you expect to have on your driveway?

• Do you plan on parking heavy, industrial vehicles on it?

For a standard passenger vehicle driveway, you’d have a driveway spanning 8 to 9 feet in width as well as 15 to 18 feet for double width. The thickness for this type of driveway concrete is usually 4 inches of non-reinforced pavement. Ultimately, this enables you to park everyday family cars on it without having to worry about it cracking due to the car’s weight. Also in order to prevent cracks, it’s expected that the driveway should be sloped towards the street as this would make sure that there’s a run off of water especially for areas that experience lots of flooding. In addition, there’s also the need to install joints to prevent cracking. For the standard 4 inch thick driveway, these joints should be positioned about 10 feet apart.

Finally for parking heavy industrial vehicles, your concrete driveway is expected to be thicker in order to cope with the added weight. Typically, the concrete driveway will require a thickness of about 5 inches. The additional one inch may not sound much, but the fact is this can increase the load carrying capacity of the concrete driveway by up to 50 percent.

Is Block Paving Permeable?

Back in 2008, there was a regulation introduced which comes with a requirement guiding the pavement of front gardens. It requires homeowners to incorporate the conventional impermeable driveways which makes for an uncontrolled run off of rainwater into sewers, roadways, local watercourses etc. However since then, new systems have been established which complies with the legislation and permit driveway laying of block paving without requiring planning permission while still providing the same visually appealing features as the conventional systems. Therefore, a short and simple answer to whether block paving is permeable is yes.

A permeable paving driveway (unlike the conventional ones which quickly diverts rainwater towards the edges to local drains) purposefully diverts rainwater into the built paving structure which oversees a controlled release of the rainwater into the environment. Permeable block paving comes with a wide range of benefits which includes the following:

• No Planning Permission Required

Unlike the traditional system, permeable block paving requires no planning permission as it oversees the driveway draining by ensuring that the surface water passes directly through the joints which makes sure the drains are not over worked and minimizing the risk of flood.

• Puddles Reduction By Natural Drainage

A permeable block paving minimizes puddles as well as standing water which helps to boost natural drainage. This is due to the laying process which features little voids that permits the passage of water.

• Natural Filtration

A natural filtration occurs when water is allowed to return to the ground by permeable block paving which helps assists in getting rid of any pollutants from the rain water.

• Flood Prevention

Permeable paving can help to prevent flooding as it absorbs water rather than directing it to the local drains or leaving it to build up on the surface’s top.

• Natural & Sustainable Materials

Natural and recyclable materials can be incorporated in producing permeable paving which is an excellent choice especially if you’re seeking a more sustainable driveway.

Tarmac is a material made up of broken stone and tar, used for surfacing roads, driveways and other outdoor areas. It’s actually a registered product trademark, but many people use ‘tarmac’ interchangeably with ‘asphalt’. Asphalt is similar to tarmac, but is now more commonly used, and is made from bitumen instead of tar.