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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.

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.

It’s up to you what size gravel you use for your driveway, but there are some guidelines that are worth following. If you go too small, your gravel will get displaced easily. But, if you go too big, you driveway might be quite tricky to walk on. Generally, it’s a good idea to go for a gravel size somewhere between 10-20mm.

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.

Oil stains on your concrete driveway can look obvious and unsightly. However, there are several different ways to remove them.

If you’ve only just spilled the oil, you can use a mixture of absorbent material, like sawdust, and solvent, like acetone or lacquer. Combine these, place them on the stain, cover and leave for about 24 hours. Then sweep up the mixture and rinse the area with water.

If you’ve got a small, older stain, you can use a detergent like baking soda, vinegar, washing up liquid or laundry detergent. Cover the stain with the detergent and leave for about 30 minutes. Then, add hot water and scrub the area and rinse. You might need to repeat this if necessary.

If it’s a larger, more stubborn stain, you might need to use a special degreaser. You can use this similarly to a detergent but make sure you follow the instruction on the bottle carefully.

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!

Removing oil from block paving can be tricky, and a professional clean and re-point is often the best option. However, for small stains, especially recent ones, it’s worth attempting to clean it yourself. To do this, you can purchase oil remover or driveway cleaning solutions – although be careful, as some may stain or mark certain kinds of paving stones. In general, stay away from acid based cleaners.