Connect with us

Thai Life

Cleaning the concrete and paving in Thailand

Tanutam Thawan

Published 

 on 

With the wet season comes the rain. And with the rain, plus the ongoing hot weather, mould and algae growing on all our outdoor walls and paving.

Rain + algae + mould looks awful and can be very slippery. Stains can also make your investment look old and unwanted. Black mould can cause allergies for some people

You have two choices. Maintain them yourself or get someone in to do it for you. If you would like to save a few baht and do it yourself here are a few proven methods.

Before you even start a few warnings. Don’t use any of these cleaning methods on a large area before you’re completely sure it’s going to work. Try out your chosen method on a small area first to check that it won’t harm the surface and that it actually does the cleaning you expect.

Also, ask around. Many houses in Thailand have concrete, aggregate, paving and tiling outside so we all have the same problems. See what’s worked with others around your area. Also be aware some of the chemicals can be dangerous for you and for the environment. There’s plenty of alternatives these days that are safe and effective.

Whilst there is no magic solution, keeping up regular maintenance is your best answer. Doing a quick, regular clean is going to be a lot easier than, say, an annual clean where it just becomes a lot of hard work, or expense. And messy.

Before you do anything else move all the furniture away, clear the area and make sure any weeds are removed before starting.

Bleach
Beach will remove stains from practically anything. Since pavers and aggregate surfaces are mostly made of concrete, bleach can be a good way to remove stains, black mould and algae from them, if used correctly.

Diluting the bleach is extremely important if you want to protect the color of your patio or driveway. Mix half a cup of bleach with around 5 cups of water, and add a spoonful of dish-washing liquid to it. Bleach is quite dangerous and shouldn’t get in contact with your skin. Wear gloves. It’s also generally toxic for plants so don’t use it around lawns or garden beds.

Spray this using a spray bottle on the surface and let it soak in for 15-20 minutes depending upon how dirty the surface is. A little bit longer for stubborn stains and really long-term build ups of mould.

Scrub the pavers with a brush that has nylon or natural bristles. Rinse off the solution with water – high-pressure water cleaner will add some muscle to the chemical reaction. Let your pavers dry in the heat.

Chlorine
Yeah, the stuff they put into your swimming pool to keep it free of nasty bacteria and the water clean. Chlorine can also be used to clean your patio or driveway, especially the black mould, moss and algae.

Mix chlorine and water (10% chlorine, 90% water) in a spray bottle. Spray the mixture on the paving thoroughly and evenly, and let it soak in for 10-30 minutes minutes. Follow up with scrubbing the pavers to remove any excess dirt or particularly stubborn stained areas. like with the bleach, use gloves and protect your skin from coming into contact with the chlorine. Also make sure that you’ve got good ventilation around the area (your very probably outside anyway).

Chlorine is toxic for you and your plants. If it splashes on your clothes you’ll most likely get bleached splotches so don’t wear your latest Armani purchase whilst using chlorine (same with the full-strength bleach).

Vinegar (acetic acid)
It stinks but vinegar is one of the best choices you could make to clean your concrete pavers and paving. It’s non-toxic and a better alternative around pets and kids.

Spray full-strength vinegar using a spray bottle on the affected parts of the patio or driveway. Let the vinegar soak in completely – say a good 60 minutes or so. Then spray the paving with a mixture of soap and water and scrub with a brush to remove any dirt that may have been overlooked by the vinegar.

Better to use white vinegar as it doesn’t stain.

Soap and Water
This simple combination of soap and water is a safe, reliable combination but needs a little ‘elbow grease’ or mechanical assistance to get the same results.

Start off with a high-pressure washer. Use this first to remove the worst of the stains, mould and algae. Then apply the detergent and water and scrub the rest by hand. Doing this removes the rest of the grunge and goo. These magic machines will blast off just about any mould, mildew or moss. WARNING: Don’t put your hands or anybody else close to the high-pressure stream of water and air!

With high pressure cleaners, at this stage, we haven’t found any places where you can rent these units for an afternoon. But, if you’re going to be doing regular cleaning yourself the investment is quite reasonable – you can pick up a fairly good one for 5,000 baht. They’re always on display near the front of most Home Pro or Thai Watsadu stores. Better still, ask the neighbour if you can borrow theres and buy them a nice bottle of wine as a thank you 🙂

Cleaning the concrete and paving in Thailand | News by Thaiger

A few other things
For fresh oil or grease stains use baking soda and apply it to the stains. Leave it for a good hour. Remove the baking soda then apply again of the oil or grease stains are bad.

There’s nothing better than regular cleaning. Even if you just regularly sweep the pavers, or spray them with water, it will help prevent the spores settling and starting to grow.

Once all bright and shiny consider using a paving sealer. They are readily available, easy to apply and make the cleaning a lot easier as the spores, grunge and dirt won’t sink into the porous paving surface.

Try one, try all methods. Tell us which works best or any other methods you’ve tried with success or the ones that have been a complete failure.

 

Want more Thailand news from the Thaiger family?

📱 Download our app on Android or iOS for instant updates on your mobile
📝️ Join the conversation on Thaiger Talk - discuss news & life in our Thailand forums
📧 Subscribe to our daily email newsletter
👍 Like/Follow us on Facebook
🔔 Subscribe to or Join our YouTube channel for daily video updates

image

Join the conversation and have your say on Thailand news published on The Thaiger.

Thaiger Talk is our new Thaiger Community where you can join the discussion on everything happening in Thailand right now.

Please note that articles are not posted to the forum instantly and can take up to 20 min before being visible. Click for more information and the Thaiger Talk Guidelines.

Click to comment

Leave a Reply

Your email address will not be published. Required fields are marked *

Local Thai journalist speaking fluent Thai and English. Tanutam studied in Khon Kaen before attending Bangkok’s Chulalongkhorn University.

Follow Thaiger by email:

Northern Thailand4 hours ago

Meteor causes explosion, green glow above Northern Thailand

Hua Hin6 hours ago

Elephant that broke into Hua Hin kitchen now in memes and ads

Tourism7 hours ago

Phuket governer reviews rules, new details for July 1 arrivals

Phuket Sandbox July 1st

days
hours
minutes
seconds

Thaiger is getting behind local businesses for the restart of tourism in July - up to 50% discounts across all advertising packages in June!

Coronavirus (Covid-19)8 hours ago

Shipment of 2 million Sinovac vaccines arrive from China

Coronavirus (Covid-19)9 hours ago

Autopsy requested for young policeman with vaccine

Thailand10 hours ago

Despite corruption allegations, street lamp project continues in Samut Prakan

Thailand11 hours ago

Thailand News Today | Sandbox is GO, vaccine cocktails, US warning on Thai travel | June 23

Best of11 hours ago

Top 5 Provinces to visit near Bangkok

Tourism11 hours ago

CCSA gives details on “Phuket Sandbox” and “Samui Plus” travel schemes

Best of11 hours ago

Top 5 Cities to visit in Thailand

Coronavirus (Covid-19)11 hours ago

Gap between AstraZeneca vaccines cut from 16 to 12 to 8 weeks

Best of12 hours ago

Top 5 Steakhouses in Bangkok

Best of12 hours ago

Top 5 Pubs in Bangkok

Coronavirus (Covid-19)13 hours ago

Wednesday Covid Update: Daily death count hits record high; provincial totals

Coronavirus (Covid-19)14 hours ago

US is “unable” to provide Covid-19 vaccines to Americans who live overseas

Thailand4 months ago

Thailand News Today | Thai Airways in rehab, All go for Songkran | March 4

Tourism4 months ago

Phuket’s nightlife. Yes, bars and clubs are still open | VIDEO

Phuket4 months ago

Thailand News Today | Covid passport talks, Thai Airways heads to court | March 2

Tourism4 months ago

Phuket Thai food treats you need to try | VIDEO

Thailand4 months ago

Thailand News Today | Bars, pubs and restaurants ‘sort of’ back to normal | Feb 23

Tourism4 months ago

In search of Cat & Dog Cafés in Phuket Town | VIDEO

Thailand5 months ago

Thailand News Today | Gambling crackdown, Seafood market to reopen, Vlogger challenge | Jan 21

Thailand5 months ago

Thailand News Today | Covid testing for visas, Business impact, Vaccine approval | January 19

Thailand5 months ago

Thailand News Today | Weekend Bangkok bombs, Thailand fires, Covid update | January 18

Thailand5 months ago

Thailand News Today | Stray car on runway, Indonesian quake, 300 baht tourist fee | January 15

Thailand5 months ago

Thailand News Today | Governor off respirator, sex-trafficking arrest, condo prices falling | January 14

Thailand5 months ago

Thailand News Today | Chinese vaccine, Thailand ‘drug hub’, Covid update | January 13

Thailand5 months ago

Thailand News Today | Bangkok may ease restrictions, Phuket bar curfew, Vaccine roll out | January 12

Thailand5 months ago

Thailand News Today | Covid latest, Cockfights closed down, Bryde’s Whale beached | January 11

Thailand6 months ago

Thailand News Today | Southern floods, Face mask fines, Thai Air Asia woes | January 8

Trending