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How To Repair Sunken Concrete Driveway

If you have concrete driveway that’s cracked, uneven and mostly especially sunken, you’d know how distasteful it can be just viewing it on your property. A sunken concrete driveway is most likely caused by rainwater erosion removing the soil under it or a big root under it which as rotted over time. Another possible cause of the sunken concrete is an improperly prepared base which implies that the soil beneath wasn’t fully compact when the concrete was poured on it. Later on the soil beneath will eventually settle and shift below the concrete driveway which weakens the integrity of the entire driveway, making it more vulnerable to cracks, unevenness and sunken.

Two ways in which you can fix this problem includes either demolishing the whole driveway, re-compact the soil underneath and fill with new concrete or repair the entire driveway using an easy process called slabjacking. In this article, we’re going to look at the slabjacking repair process as it’s significantly less expensive than the demolishing approach and will also cause minimal disruption to your lifestyle.

Also referred to as mudjacking or concrete lifting, slabjacking is simply a process used to float your existing concrete back to its original position. If you are not a competent DIYer or lack confidence to pull this off, we’d recommend reach out to a professional for help. If otherwise, then you can practice the slabjacking process given below.

✓ Drill holes through the slab.

✓ Pump grout mixture through the holes. This mixture will spread out beneath he driveway and raise it up.

✓ Lastly, fill the holes and level the concrete driveway surface.in such a way to hide the signs of the repair made.

This is a process that works to efficiently get your driveway back in a top condition relatively quickly.

No, pattern imprinted concrete shouldn’t be slippery. Most good driveway installers will add a special anti-slip agent to the sealant before they brush it onto your driveway, so it will stop it from being slippery.

It’s important to ask a driveway company how they will seal your driveway when you get a quote from them. If an untrustworthy company seals your driveway badly, it can cause a thick and extremely slippery surface, so it’s vital that you ask any contractor what their procedure is before you engage them.

It’s also important to remember that pattern imprinted concrete isn’t a ‘non-slip’ surface – it’s just not slippery. You could still slip over on a concrete driveway, just like you could on tarmac or a block paved driveway. Also, once you’ve walked and driven over your driveway for a few months, its skid and slip resistance will increase as it weathers and builds up tiny specs of dirt on it. Pattern imprinted concrete is often used in high footfall areas in places like shops, fast food restaurants and theme parks, so if there was a significant slip risk these businesses wouldn’t use it.

You might think that you could ask your contractor not to seal the driveway to make it less slippery, but it could actually do the opposite. By sealing pattern imprinted concrete, it means that moss and algae is much less likely to grow, which can be extremely slippery to walk on if it’s left to its own devices. If moss does form on your driveway, the sealed surface is much easier to clean as you can simply pressure wash it away; this is not as easy to do on a non-sealed surface.

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.

There is a variety of methods available to ensure that your paving drains properly, for example draining into a lawn or soakaway. Correct drainage of paving is a requirement for planning permission. See our guide on planning permission for paving for more information.

1. Prepare the sub-baseThe driveway company will excavate, or dig, the existing surface down to a depth of around 200mm. They will remove any debris from the area may place it in a skip or arrange for it to be removed in another way. When they dig down to the sub-base of your previous driveway, they will assess how much hardcore they need and arrange for that to be delivered to the site. They will then spread the hardcore across the sub-base to create a level surface to pour the concrete on. Most good contractors will apply a gel to any walls and doors to protect them from concrete splashes. They will also add any gulley tops, manhole covers or shuttering that’s required.
2. Installation and imprintingNext, the tradespeople will have the concrete either poured from a large mixer vehicle or barrow it in from a mixer and pour onto the surface. They level it with rakes, then add a colour surface hardener in a colour of your choice. This will give the driveway its permanent colour. They will then wait until the concrete has hardened to the correct consistency for imprinting the pattern, then will use special tools and stencils to make the pattern that you asked for. They will then spread a colour powder called a release agent over the surface, and leave to dry for 1 to 2 days depending on the weather conditions.
3. CleaningWhen the contractors return, they will add crack control cuts into the concrete. This is important because concrete expands and contracts in the heat, so there needs to be some give to stop any larger cracks from forming. Then everything is power washed clean, and a chemical wash is also used on the concrete to ensure it’s completely dust-free. The installers will ensure all your walls and doors are clean, which will hopefully be an easy job if they used wall gel.
4. SealingThe final step is to seal the driveway. There needs to have been at least two dry days before the tradespeople can do it, so you might find it’s best to have your pattern imprinted driveway installed in the summer. The contractors will blow any debris away from the surface and dry any damp areas where necessary. They will then add an anti-slip agent to the sealant and brush it on. It’s best to not walk or drive onto your new concrete driveway for about 4 days after sealing to allow everything to set. But after that, you’re ready to use your new driveway!

If your concrete driveway’s looking grubby, it’s best to try cleaning it with water and a brush, or a mild detergent. However, if this doesn’t work, it can be worth trying bleach.

Dilute your bleach down to 50% bleach and 50% water, and apply it to your driveway. Leave it for 10 minutes, then scrub it using gloves and a stiff brush. Finish by rinsing your driveway off with clean water.

It’s important to remember that bleach can stain certain surfaces and kill plants. So, if you’re concerned about materials and boarders around your driveway, it might be best to use a different type of detergent, like floor cleaner or degreaser.

To inexperienced people laying of paving slab isn’t much more than digging a little, purchasing little amount of mortar and pressing down the paving slabs. But how good would it have been if only it were that easy in real life? The truth is, in reality, laying paving slabs does not only require you to prepare your sub-base painstakingly and mix your mortar using the appropriate materials, but you’d also have to work with accurate and precise paver placements to guarantee the patio’s longevity. As a result, if you lack proper training or experience, we’d recommend you hire the services of a seasoned professional who can guarantee the best results and also save you time and extra cash that may result from possible costly errors. In this guide, you’d gain more insight into the paving slabs laying process.

To get started, you’ll need sharp sand, cement, shovel, wheelbarrow, pointing trowel, rubber mallet, spirit level, jointing compound, hard-bristled brush and tarpaulin.

• Mix a layer of mortar for each paver.

• Apply the mixed mortar onto the sub base by using the trowel.

• Slot the first flag in place and ensure not to stain the paver’s surface with the mixed mortar.

• Using a rubber mallet, carefully tap the paver to the mortar bed. Once done, ensure the surface is even with a spirit level.

• Take a measurement of the gap between the pavers

• Repeat the above steps until all pavers have been perfectly laid

• Leave the pavers to dry for about 1 to 2 days. You can protect it using a tarpaulin if concerned about rain.

• Use the jointing compound to fill up the paver gaps to bind together the pavers. Ensure to wipe off any excess compound using the hard bristled brush.

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.