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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.

Creating a tarmac path or driveway is a tricky process. It’s a job best left to professionals who know what they’re doing, as there are plenty of opportunities for it go wrong. However, even if you’re planning to hire someone to do it for you, it’s worth knowing how it’s done.

Firstly, you’ll need to remove any existing path or driveway and excavate down to formation level – about 175mm below paving level. Then, a membrane is laid down to prevent weed growth.

Next, a sub-base goes down, usually made of crushed rock or concrete. This is compacted and the tarmac is laid over the top. This is put down in two layers, and is rolled to make it compact and smooth.

It’s important to use edging when laying tarmac, to ensure that it doesn’t run off where you want your path or driveway to be. Tarmac paving and driveways also needs suitable drainage.

Your contractor should have access to your driveway and a power source. If they have these things, you don’t need to be there while they’re working on your driveway. However, it’s worth being around if you can so you can clarify details and answer any questions.

Have you decided to install block paving and wondering what the best sand to be applied to the joints is in order to achieve a perfect job? Well, you’re at the right place! This is one of the most frequently asked questions when it comes to block paving and we seek to give you a reliable solution once and for all.

The best sand for block paving is a kiln-dried sand. It’s an extremely fine sand which has been dried in a kiln to get rid of all the water before it’s incorporated to achieve the best results. Therefore, the sand contains no moisture and is commonly used to fill the joints of block paving to keep the paving’s structure rigid and strong. It also goes a long way to prevent the ingress of water while stopping the paving from moving and becoming loose. The major reason why the paving sand must be dried is to allow it flow easily into the joints as well as the block paving’s gaps. As result of this smooth flowing to the bottom of the joints, there will be no sand sticking to the sides of the pavers.

Another major reason why kiln-dried sand is commonly applied to the block paving’s joints is to prevent water from penetrating the paved area. It also tightens the individual pavers together to prevent from moving and becoming loose. In the event whereby you happen to leave the joints of your block paving without kiln dried sand, it’s highly likely that they’ll sink as a result of water penetration and the blocks will become very loose. After washing block paving, it’s very important to also replace any sand washed off in the process once the paving is dried to prevent water ingress into the joints.

If you want your tarmac driveway or outdoor area to last as long as possible, it’s important to look after it. This means giving it a good clean every so often.

If there are any greasy or oily stains on your tarmac, you won’t get these off only using water. Get a degreaser and follow the instructions. You’ll then need to use a pressure washer or hose to rinse off the detergent and clean the rest of your tarmac or asphalt area.

Avoid getting your pressure washer too close to your outdoor surface or pointing it directly at it. You should also avoid cleaning the same area for too long. This will help you clean your tarmac while avoiding damaging it.

If you want to give your concrete paving slabs a new lease of life, it’s possible to paint them. This is a great option if your slabs are looking tired or you want a new look, but you don’t want to invest in new paving.

Before you go ahead, you need to make sure that your slab paving is clean and dry. And if it’s been sealed, you’ll need to strip this off. Make sure you get a paint that’s specifically designed for the job so you get the best results.

Slab paving is a great material to use to create a sturdy shed base.

Start by measuring out the area where your shed is going to be. This needs to be the size of your shed, plus about 10-20cm extra each way. Mark it out with string and pegs, make sure it’s square, and dig it down to about 6cm deep.

Then create a sand and cement mixture and put a layer down, followed by your paving slabs. Make sure you start in one corner and use a rubber mallet and spirit level to make sure they’re as level as possible. Leave this to set and you’re ready to use your shed base.

Paving comes in a wide range of colours and patterns. Consider using a contrasting colour for the edges of your patio or driveway for a tidy effect. A paving specialist can advise you on different combinations possible, alternatively, have a look online at what products, shapes and colours are produced.