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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.

1. Prepare the base If you want your resin bound driveway to last a long time, you need to ensure that you prepare the base properly. Remove any block paving, grass or soil and dig down until you hit solid ground. Lay a sub-base of asphalt for good permeability. If you’re laying over the top of your current driveway, make sure that all cracks are increased into a ‘v’ shape with a saw and ensure the surface is dry and weed-free.
2. Mix the resin You must follow the instructions on the materials you have to the letter if you want the curing process to work. Usually batches come in ‘Part A’ and ‘Part B’. Keep the resin container secure and on a protective surface to avoid splashing, then mix Part A for 10-20 seconds at a slow speed with a helical bladed mixer. Add Part B and mix thoroughly at a slow speed for about 2 minutes until it’s blended together.
3. Mix the dried aggregates and sand with the resin Place a quarter of the aggregates into a mixer, then add the pre-mixed resin and start a stopwatch. You should then add the rest of the aggregates before slowly adding the sand. When you’re happy with that mix, stop the stopwatch. That time is the time that you need to spend mixing any other resin and aggregates to avoid colour variation.
4. Lay the mix on the surface Transfer the mix to the work area then plan a laying route. When the mix is laid out, use a very clean trowel to spread the mix. Clean it regularly during the process to avoid dragging aggregates out of place. Once the aggregates stop moving in a fluid movement and become solid, stop trowelling. Then you can polish the surface to give it an attractive shine.

As a homeowner, your home is your haven where you can control things and add more value, however that doesn’t give you the license to go around digging up your driveway as you deem fit. Replacing your old driveway with a new one comes with its own unique set of rules which are put in place to ensure that your personal preferences doesn’t pose long term issues such as flooding or poor visibility on any adjoining road. You should however note that it’s not every time you would need a planing permission for your driveway.

Below are the circumstances whereby you’ll need to submit an application before commencing your driveway paving project.

• In the event whereby you are to pave a driveway of over 5 square metres and/or a permeable surface is not available for its drainage. If the later is not available, there’ll be an increase in the flood risk. As a result, there’s the need to take into account permeable paving for your project.

• In the event whereby you’re changing the visibility on your road. These situations include removal of trees, gates or walls and the like. So far your changes negatively affects drivers’ visibility, you’ll need a planning permission.

• In the situations whereby you need to include a drop kerb. You may plan to add in a drop kerb if you’re thinking about expanding your driveway. Therefore, since residents can’t change the roads or pavements at their first fanciful impulse you’ll need to consult your local council before submitting your application.

• In the situation whereby its a listed building. Planning decisions are also greatly affected by the need to protect historic building. So if your building is a listed one, you’d have to submit an application before making changes.