Restoration Tips and Tricks

Wood Bleaching

Bleaching, is not just for white clothes. Yes, you can bleach wood but there are some important steps to follow, today I will talk about the wood bleaching process.

Wood Bleaching Product Options:
  1. Household bleach – This can remove stains in wood, but will not effect the wood’s natural color. Also, in my experience it does not do as well of a job removing water marks other defects from age and wear.
  2. 2 Part Wood Bleach – Very strong two part bleaching system. This works quickly. It is great at removing dark stains and can change the color of the wood.
  3. Oxalic Acid – This is commonly used to remove water stains and to even out weathered wood. However, because it is considered highly toxic I typically have opted out of using this one. Please do more research before making this your choice and get a good respirator.

I tested the first two listed above on these two oak tables. My client wants a gray-ish stain on these tables so I want to cut as much of the orange as I can.  Table on the left I am going to use a standard house hold bleach (100% undiluted). Table on the right I am going to use A-B wood bleach.

You can see there are water rings in the wood as well. In my experience household bleach will not take those completely out.  I have already stripped and cleaned these tables. I have not done any sanding other than clean up with a #4 steel wool.

comparison on wood bleaching
img_3495.jpg

This one is the standard house hold bleach.  It just appears saturated.  The color remained unaffected. Notice top left of the table.

wood bleach

This one is the 2 part wood bleach. You brush on part A, and immediately follow up with part B. Once you see the foam starting you know that it’s doing its job.

Now I wait a few hours before assessing the progress… stand by……………….

img_3499

Here we are after bleaching. You can clearly see the household bleach did not do as good of a job as the two part bleach. Note that two part bleach can clearly result in blotching.  Clean up and sanding usually takes care of that. Or you can go back over with part B.

wood bleaching

The above picture is household bleach close up on the water rings.

Wood bleaching

This one is two part bleach close up on the water rings.

Recap:

  1. Start with raw wood sanded with a 100-180 grit sandpaper. You need to open the grain of the wood so the bleach can soak into it.
  2. Dust off and then choose your type of wood bleach.
  3. Let dry, I wait till the next day to really see what results I have.
  4. Neutralize (see below)
  5. Sand again 150-180 grit. You have soaked the two a few times which has raised the grain you will need to sand once dry.
Neutralizing

It is important to note the role of neutralizing after bleaching. When you bleach your whites while doing laundry you always need a rinse cycle with vinegar to re-neutralize the machine. Same holds true with wood. If you don’t re-balance the chemical nature from the bleach, it will eat way at your clothes and make holes, or could damage your wood.

Wood Types 

Also note that different species of wood will respond differently to bleaching. After a tornado hit a local town, we were contracted to restore six cherry dining room chairs with water damage. We had to strip off the old finish and bleach the chairs because of the dark marks. The cherry wood had a bad reaction to the bleach and turned the chairs green! (Straight up green, I am not kidding.) We were so fortunate to have such understanding clients. We had to ultimately paint the chairs and cover up the cherry wood.

Thank you for reading this weeks blog! Let me know about your bleaching experiences.  Be sure to take caution when bleaching and work in a ventilated area too.

Happy Bleaching,

Tara Lou

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Tara Lou
<p>19 years ago, I started my path in furniture by preserving antique furniture, and restoring furniture after home disasters. More recently I have started working with clients to revive their furniture to todays fashions. When I’m not chipping my nails flipping furniture I am out with my kids hunting, fishing, foraging, gardening or hiking.</p>

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Tara Lou shares her knowledge of all things furniture from repair, to painting. Her bi-monthly blog shares, newest revivals, product recommendation, and how to tips. 

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