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Old 04-06-2013, 05:13 PM
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Default Cleaning mortar from bricks

What is the best way to clean the mortar off my oven bricks
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Old 04-06-2013, 05:23 PM
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Default Re: Cleaning mortar from bricks

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Originally Posted by Circe View Post
What is the best way to clean the mortar off my oven bricks
Inside or outside the oven?
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Old 04-06-2013, 05:24 PM
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Default Re: Cleaning mortar from bricks

If it is fairly new mortar use a 50/50 solution of muratic acid and water. Wear gloves and eye protection. I use a brush and have the hose handy to rinse. Just occurred to me inside or out? The hose for rinsing may be an issue...
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Old 04-06-2013, 05:37 PM
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Default Re: Cleaning mortar from bricks

Inside you can use a wire wheel attachment for a drill or angle grinder. Use one made of brass.

EDIT: for dry cleaning brick inside the dome.
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Last edited by stonecutter; 04-07-2013 at 04:39 AM.
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Old 04-06-2013, 06:58 PM
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Default Re: Cleaning mortar from bricks

It's outside so I will give the acid a try thank you
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Old 04-06-2013, 07:25 PM
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Default Re: Cleaning mortar from bricks

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Originally Posted by Les View Post
If it is fairly new mortar use a 50/50 solution of muratic acid and water.
I thought the ratio is 10% acid to water?
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Old 04-06-2013, 07:27 PM
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Default Re: Cleaning mortar from bricks

10 to 15 parts water to 1 part acid unless you want to burn out your eyes, your lungs and the brick.
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Old 04-06-2013, 07:29 PM
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Default Re: Cleaning mortar from bricks

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Originally Posted by brickie in oz View Post
I thought the ratio is 10% acid to water?
It depends on the type of brick, but that is pretty close. But typical cleaning should be around 1:6 - 1:10.
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Old 04-06-2013, 07:34 PM
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Default Re: Cleaning mortar from bricks

Also you will need to pre-wet your brick before applying acid.
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Old 04-06-2013, 08:50 PM
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Default Re: Cleaning mortar from bricks

F'ing around with muriatic is not something I recommend to anyone, it is a 30 percent solution of hydrochloric acid and is a serious industrial chemical. If you insist on using it, hose down the entire area until fully saturated, dilute to a reasonable mix (10 to 15 to one) by pouring the acid into the water and wear appropriate safety equipment.

There are available proprietary cleaners that are a little safer, Sure Klean 600 detergent is one, although it is still a dangerous product. If you are not able to keep from making a mess while laying your masonry, then you can use industrial strength vinegar to remove minor amounts of mortar.
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