exterior brick
- Thread starter Dolly Llama
- Start date
Dolly Llama
Number 5
to add..that's 60 year old metal siding above.
we cut some huge overgrown shrubs off the front and that revealed the stains
how do i get rid of it??
soda blast??
..L.T.A.
we cut some huge overgrown shrubs off the front and that revealed the stains
how do i get rid of it??
soda blast??
..L.T.A.
dgardner
Moderator
Are those chalky deposits from the paint/coating above? Mebbe try a little paint stripper on a test spot?
Dolly Llama
Number 5
Ray Burnfield
Supportive Member
It looks like a calcium deposit.
If you use an acid it will take it off
If you use an acid it will take it off
dgardner
Moderator
I've found the methylene chloride-based strippers (like Strip-X or Jasco) to be pretty potent. It was a thought.....
If it's calcium deposit then never mind....
If it's calcium deposit then never mind....
F
FB19087
Guest
I would try oxalic acid.......
Mikey P
Administrator
I'd hire this guy to handle that for you..
hogjowl
Idiot™
I've read a ton of threads on the Powerwash board concerning that very thing. It's efflorescence and the product you want us available from your local brick supplier.
Ray Burnfield
Supportive Member
Do you ask for the efflorescence white sh*t remover?
Cameron DeMille
Member
I don't know if I would consider this efflorescence, which is moisture that wicks up through the material and leaves deposits on the surface. This looks topical, like it am from an outside source. The indicator is the pattern of deposits that run from the top of the wall down. It looks like the tree was getting wet from rain and it was running down the wall.
If it was efflorescence, you would likely see it wicking from the bottom of the wall up, where it would absorb the moisture from the ground.
If this is the case, you want a calcium deposit remover. A brick and masonry wash would be my recommendation.
Something like this: http://www.prosoco.com/Content/Documents/Product/SK_1261_Hard_Water_Deposit_Remover_PDS_063011_C.pdf
If it was efflorescence, you would likely see it wicking from the bottom of the wall up, where it would absorb the moisture from the ground.
If this is the case, you want a calcium deposit remover. A brick and masonry wash would be my recommendation.
Something like this: http://www.prosoco.com/Content/Documents/Product/SK_1261_Hard_Water_Deposit_Remover_PDS_063011_C.pdf
hogjowl
Idiot™
That picture, or one like it, is posted about once a week on the couple of power washing boards I frequent.
There's two or three different products they always mention, but I've learned by lurking that those products are found at local brick suppliers, and the correct one is whatever they happen to carry.
There's two or three different products they always mention, but I've learned by lurking that those products are found at local brick suppliers, and the correct one is whatever they happen to carry.
steve_64
Member
- Joined
- Aug 11, 2012
- Messages
- 13,372
install new shrubs
Cameron DeMille
Member
Honestly, you can use just about any acidic masonry wash. There are so many and a lot of them are very similar.
You could probably get away with diluted muriatic acid, but I would test whatever you're going to use first to make sure it doesn't lighten the brick.
Lee Stockwell
FOJL
Vinyl siding...
Desk Jockey
Member
Soda would not only take it off but make all of that brick look like new.
J Scott W
Member
Agree that this is calcium with organic matter from tree. Acid is the answer. You can go to Marty's brick emporium or over to Pemberton's for some Viper Renew.
hogjowl
Idiot™
Bite me.
Dolly Llama
Number 5
probably have some muratic acid on hand (I use it to descale TM)
I'll grab it, but will try rust remover off the van first..not as "hot" as muratic
..L.T.A.
I'll grab it, but will try rust remover off the van first..not as "hot" as muratic
..L.T.A.
