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The stain could be caused by mold. The wood should be pressure washed and treated with a sealer. Another type of black stain in timber is caused by iron oxide. When the moisture in the timber has caused the iron in any fixings, such as nails, to rust and form ferric oxide. This is black, and this travels through the moisture in the timber causing patches of black staining.

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Q: Why does water cause a black stain in wood?
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Related questions

What is it called when water ruins wood?

i think it's called a water stain, it can happen to about everything, so i think it would be called a water stain on wood.


How do you stain over water damaged wood?

Try using oxalic acid, also called wood bleach, on the water damaged area before attempting to stain the wood. If that removes the stain, sand the surface, use a wood conditioner or a clear stain as a first coat, then apply the colored stain. Once that's dry, apply a clear polyurethane for interior use, or a spar varnish for exterior use.


Can you stain balua wood?

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What does a wood stain do to the wood underneath?

Wood stain is abosorbed into the wood, so the wood takes on the color of the stain. This is why the features of the wood are still visible, unlike with paint.


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Wood stain is for sealing and emphasising the natural colour of wood


How do you get wood stain out of a white t-shirt?

How you can get a wood stain out of a white t-shirt depends on whether the stain is oil or water-based. For oil-based wood stains, use mineral spirits and for water-based wood stains, use acetone. Blot the stain from the edges and work your way in towards the middle but do not rub. Wash the t-shirt on a hot laundry cycle, between 60 and 90 degrees.


How do you remove a urine stain out of wood?

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Can you stain over weathered paint?

If you paint over the "weathered" paint, it will chip and cause the stain to come off. Also, the stain needs a clean sanded surface in order for the wood to absorb it. Otherwise, there is no reason to use stain.


How do you clean wood stain off concrete?

There are a few ways one can remove wood stain off of concrete. One way is to use a sandblaster to remove the stains. Another method is using wood bleach, water, and a scrubbing brush.


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Can you use a water based stain over paint?

No Stain is applied to wood before any sort of sealer stain enhances the color of wood to bring out grain different densities of wood absorb the stain at different rates paint, varnish, lacquer seal out water after a stain is applied. Lately stain is hard to find the one step idea stain,sealer, clearcoat all in one is the norm the results are so much inferior i have no idea how they can sell that junk. perhaps that is why you can find so much nice furniture on trash day


What are the full lyrics to the ZAR Wood Stain jingle?

Zar is more than it ever could, cause Zar is good for more than just wood.