Liquid sandwash mildew stain remover.

[up2you2]

Liquid sandwash mildew stain remover.

Does anybody know of an effective sandwash mildew stain remover here in Thailand.

In spite of using a sealer to prohibit this (not cheap), on my replacement sandwash, it is already starting to re-appear.
Previously my Karcher water pressure cleaner did an excellent job, but over time it tended to remove the sandwash itself.

HomePro seems to have quite a selection, some of which are pricey, just interested if there is a Thai product that does the job?  

[longball53098]

After power wash you need to use a sealer. I have used 3 different products over the last years and all work ok and last for about 2 or 3 years before the mold reappears and cleaning and sealing needed again.

 

Bosny ACRYLIC WATER SEAL or Silicone base

 

TOA 213 or 214

 

There are others too

[ecline]

We have lots of mango trees on our property. Every year when they flower we get lots of sticky sap coating everything. Besides collecting dirt the stuff stains our sandwash and ceramic tile a dark purple color. The stains are practically impervious to brushes, soap and elbow grease. I bought some expensive liquid tile cleaner that did a very good job getting all of the stains and dirt out. Still had to scrub a lot. But the thing I have found the works the best is to buy baking soda in bulk from the local market and a bunch of cheap white vinegar. Put the baking soda in a sifter or whatever and spread it dry all around the area you want to clean. The pour vinegar over it and let it foam and do its thing. After a few minutes take a scrub brush to it. Works great for my problem, not sure about mildew. But it's cheap and worth a try if you haven't already. 

[aussiandrew]

Mildew/mold over the years I spray the area with one parts household bleach to 10 parts water using a small spray plastic bottle. Works a treat.

Sent from my SM-T815Y using Thailand Forum - Thaivisa mobile app

[Sydebolle]

Hydrogen Peroxide; dilute it and spray it over the area; can be rinsed off later on with a normal garden hose ;-) 

[SOUTHERNSTAR]

Diluted acid may solve the problem followed by a power wash without concentrating the water jet. Use the horizontal spray setting and use the water jet like a broom. As the acid should distroy the mildew the water is purely for clean the residue away.

[bazza73]

The problem with mildew/mould on porous surfaces is that even the most vigorous cleaning does not remove traces in the pores, which simply grow back when conditions are favourable. So the OP needs to ensure the mildew is killed off completely.

The simplest and most effective mildew/mould killer is a dilute solution (2%) of copper sulphate. Spray it on and leave for 24 hours. Then power spray the dead mildew off. If a product with copper sulphate can't be found in HomePro, Global House or Thai Watsadu, any chemical supply house will have it.

Copper sulphate is quite acidic, so wear eye protection when using it.

[AboutThaim]

5 hours ago, ecline said:

We have lots of mango trees on our property. Every year when they flower we get lots of sticky sap coating everything. Besides collecting dirt the stuff stains our sandwash and ceramic tile a dark purple color. The stains are practically impervious to brushes, soap and elbow grease. I bought some expensive liquid tile cleaner that did a very good job getting all of the stains and dirt out. Still had to scrub a lot. But the thing I have found the works the best is to buy baking soda in bulk from the local market and a bunch of cheap white vinegar. Put the baking soda in a sifter or whatever and spread it dry all around the area you want to clean. The pour vinegar over it and let it foam and do its thing. After a few minutes take a scrub brush to it. Works great for my problem, not sure about mildew. But it's cheap and worth a try if you haven't already. 

A bunch of vinegar?  That must be a favourite measurement of almost everything in the USA.  How much is a bunch in kgs, litres, etc. I've heard it used for snow, rain, people and almost everything else you can measure but never really understood if it's a lot or a little.

[luudee]

 

I too use Hydrogen Peroxide ... also works in the shower, hard to reach places ... 

Works like a charm !

 

rudi

[jacko45k]

9 hours ago, luudee said:

 

I too use Hydrogen Peroxide ... also works in the shower, hard to reach places ... 

Works like a charm !

 

rudi

Ouch!

[ecline]

12 hours ago, AboutThaim said:

A bunch of vinegar?  That must be a favourite measurement of almost everything in the USA.  How much is a bunch in kgs, litres, etc. I've heard it used for snow, rain, people and almost everything else you can measure but never really understood if it's a lot or a little.

Not very scientific I admit. Basically get enough baking soda to lightly dust the affected area. Then pour enough vinegar over the area to get it thoroughly wet and get a good foaming reaction going. I have never measured the amounts of each, so I used a suitable vague quantifier. How much is a bunch? Good question. Even I don't know and I am from the USA :-)

 

I will guess that for mildew some of the other suggestions may work better though.