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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.

Driveway work is usually done in the warmer half of the year. This is partly to avoid bad weather. If you want to get ahead and avoid waiting for a contractor to be free, you should try getting in touch with a professional in the early spring so a date can be booked for install as soon as practically possible.

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.

Resin bound driveways are known to last a long time without the need for repairs, but sometimes accidents happen. You also need to make sure you regularly maintain your driveway by sweeping and power washing it to prevent damage. But if it does get damaged, how do you repair your resin bound driveway?

If you notice a crack in your resin bound driveway, it’s important to repair it as soon as possible. If you leave it to erode, you could end up with a difficult repair that will cost much more money.

To repair a crack, you’ll need to carefully chisel it open slightly so you can apply a primer then fill in the crack with a matching-coloured resin and aggregate mix. While there are variations in colour and size with all stone mixes, usually it’s easy to find a batch that matches almost perfectly. And once the crack has been repaired for a while, it will blend in seamlessly with the rest of your driveway.

To prevent cracking in your resin bound driveway, it’s best to tackle the issue at initial installation. Speak to your installer about whether it’s possible to add fibreglass mesh to the base. You should also ask your installer to add expansion trims as these will significantly reduce the risks of cracks.

So the best way to repair resin bound driveways is to prise open the crack and fill it in. It might seem simple, but getting the right colour match is something that should be left to the professionals, so get a few quotes to ensure you get the best finish.

Gravel is the cheapest driveway surfacing material. Asphalt costs a little more than gravel, and concrete is significantly more expensive. The cost of paving depends on the material you use. Obtain as many quotes as possible as materials and costs differ from company to company.

Moss growth on tarmac and asphalt is pretty common. This can make your driveway or outside area slippy and untidy, so it’s a good idea to get rid of it.

Start by using a stiff brush to dislodge as much moss as possible and clear it off your driveway. Then use a moss killer to kill any remaining moss. Make sure you follow the product instructions – some moss killers are best used on tarmac or asphalt that’s clean and damp, whilst others are better for dry surfaces.

To prevent further moss growth, it’s a good idea to reduce the amount of shade on your tarmac or asphalt as much as possible. This will help you keep it as warm and dry as possible, and reduce moss growth.

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.

The best way to clean resin bound driveways is to sweep it regularly with a stiff broom. This will remove any debris and prevent moss from growing. It's a good idea to jet wash it after sweeping, because this will get rid of any smaller parts that a broom might not collect.

When you jet wash or power wash your resin bound driveway, make sure the pressure isn’t too high. It’s recommended to keep the pressure less than 150bar, as anything too strong could damage the surface. Make sure the water is cool, but not cold – both hot and cold water can damage the resin. Make sure the jet wash nozzle is at least 20cm from the surface. Any closer and this could damage your driveway. Use a sweeping back and forth motion to clean.

If you treat the area before you have your resin bound driveway installed, you shouldn’t get any weed growth. But if you get any moss or algae appear, you can apply a moss and algae killer that should remove and prevent any regrowth. If you have ingrained algae, you can remove it with a strong bleach solution; make sure you follow the manufacturer’s instructions. This should also help restore the driveway’s original colour. Make sure you rinse your driveway thoroughly with clean water after using bleach on it to prevent any harm to wildlife or plants.

If you get chewing gum on your resin bound driveway and you can’t get it off with a pressure washer, try using a freezing spray on it first. Then use a wall scraper to gently remove it – never dig under the chewing gum as this could damage the resin on your driveway.