How to clean a brick driveway

Question

Our brick driveway has moss and green algae on it. Can you pressure wash brick without dislodging the jointing sand or is there a better approach? How much would a pro cost instead of doing it myself?

David · Answer

Professional exterior cleaner here. Pressure washing is highly recommended for block paving and the point is to remove as much of the sand in between the blocks as possible as that’s where a lot of weeds come from. Pre treat 2 weeks before cleaning with a strong weed killer if possible. After cleaning when completely dry use kiln dried sand and sweep in. 
DO NOT USE BRICK ACID. If you want to use a chemical to clean use Sodium Hypochlorite. I charge a minimum of £5 per m²

Mike · Answer

Use a brick cleaning acid.....watered down to the specifications....and jet wash down thoroughly.
This will take away the majority of the markings.

Victor · Answer

Weed killer two weeks before then spray it with hypochlorite which is a industrial bleach so don’t get it on your plants or lawn area , brush it in with a stiff brush and leave for 15 minutes to do its thing then pressure wash,don’t worry about the jointing sand because you’ll need to put new sand in when it’s completely dried then apply jointing sand stabiliser and again spray it on liberally allowing it to dry,this seals the sand and helps prevent any seeds going into the joints and forming new weeds, good luck 👍
D V Monk & sons driveways & landscapes.

Kaiden · Answer

You can pressure wash brick, but it’s easy to blow the jointing sand out if you go in too hard. Use a fan nozzle, not a pinpoint one, keep the lance moving, and hold it back a bit rather than pinning it down on the joints.

Better approach for moss and algae: treat it first. Apply a moss and algae killer and leave it a day or two to kill the growth at the root, then wash at a moderate pressure. It lifts far easier and comes back slower than if you just blast it off.

Once it’s dry, brush fresh kiln-dried sand back into the joints — that’s the step most people skip, and it’s what keeps the blocks stable and stops weeds returning.

For a straightforward moss clean this is a doable DIY job with a decent washer. Where it’s worth calling someone in is heavy oil staining, or if the drive’s older and you’d rather not risk lifting the joints yourself.

Ethan · Answer

Pressure wash, then re sand with kiln dried sand, ideally not too much pressure

Dragos Daniel · Answer

Yes, brick driveways can be pressure washed, but it should be done with the correct pressure and technique to avoid removing too much jointing sand. The best approach is to treat the moss and algae first, pressure wash carefully, then allow the driveway to dry before reapplying kiln-dried sand to the joints. For a professional clean, expect to pay around £200–£500, depending on the size and condition of the driveway. Sealing the driveway afterwards can also help reduce future moss and algae growth.

Carlos · Answer

Hi and yes you can use pressure washer 
And the cost depends the size and materials you want to use to clean and seal and protect

Martin · Answer

Hi Adam you can pressure wash it with suitable washer and use chemical brick  acid  & depending upon how it finishes you ma have to brush a bag of sand between the bricks if you need any help get in touch regards martin

Andrew · Answer

Jet wash will be fine ,but it will have to be re sanded

James · Answer

Pressure wash the mono block then wait for it to dry and brush in fresh kiln dried sand.

How to clean a brick driveway

Follow Us

Cookies

Manage Cookies

Essential cookies

Analytics & Tracking

Advertising