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Urethaning wood entry door darkens color Mikepier 05-15-2008
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Posted by Mikepier on May 15, 2008, 9:36 am
Yesterday as a test, I wiped on a small section of Helmsman Spar
urethane on my front entry door to see how it looks. This door has
been recently stripped down to bare wood and I believe its mahogony.
When it dried, it darkened the color of the wood pretty significantly.
Is this normal? I thought urethane was suppose to be clear for the
most part.

Posted by Mike on May 15, 2008, 10:30 am

> Yesterday as a test, I wiped on a small section of Helmsman Spar
> urethane on my front entry door to see how it looks. This door has
> been recently stripped down to bare wood and I believe its mahogony.
> When it dried, it darkened the color of the wood pretty significantly.
> Is this normal? I thought urethane was suppose to be clear for the
> most part.

Oil bases will make the wood darker. they always do afaik



Posted by JoeSpareBedroom on May 15, 2008, 11:59 am
> Yesterday as a test, I wiped on a small section of Helmsman Spar
> urethane on my front entry door to see how it looks. This door has
> been recently stripped down to bare wood and I believe its mahogony.
> When it dried, it darkened the color of the wood pretty significantly.
> Is this normal? I thought urethane was suppose to be clear for the
> most part.


Water is also clear and darkens wood, but it evaporates. Unlike water,
urethane sticks around, which is a characteristic you paid for. The result
you got is normal.



Posted by Steve on May 15, 2008, 12:53 pm

> ...
>> Yesterday as a test, I wiped on a small section of Helmsman Spar
>> urethane on my front entry door to see how it looks. This door has
>> been recently stripped down to bare wood and I believe its mahogony.
>> When it dried, it darkened the color of the wood pretty
>> significantly. Is this normal? I thought urethane was suppose to be
>> clear for the most part.
>
> Water is also clear and darkens wood, but it evaporates. Unlike
> water, urethane sticks around, which is a characteristic you paid
> for. The result you got is normal.

Sneaky trick:
Wipe bare wood with mineral spirits. The wood will darken to approximate
the look you'll have after applying a non-staining finish like
polyurethane. The mineral spirits will evaporate off in a hour or so.

I've yet to find a finish that's truly colorless.
--
Steve B.
New Life Home Improvement

Posted by JoeSpareBedroom on May 15, 2008, 12:56 pm
>
>> ...
>>> Yesterday as a test, I wiped on a small section of Helmsman Spar
>>> urethane on my front entry door to see how it looks. This door has
>>> been recently stripped down to bare wood and I believe its mahogony.
>>> When it dried, it darkened the color of the wood pretty
>>> significantly. Is this normal? I thought urethane was suppose to be
>>> clear for the most part.
>>
>> Water is also clear and darkens wood, but it evaporates. Unlike
>> water, urethane sticks around, which is a characteristic you paid
>> for. The result you got is normal.
>
> Sneaky trick:
> Wipe bare wood with mineral spirits. The wood will darken to approximate
> the look you'll have after applying a non-staining finish like
> polyurethane. The mineral spirits will evaporate off in a hour or so.
>
> I've yet to find a finish that's truly colorless.
> --
> Steve B.
> New Life Home Improvement


Cool.Thanks. I'll be facing this situation soon with some new interior
doors. (#4,108 on the to-do list)



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