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Sikkens Cetol vs. Spar Urthane wa3cuj 04-04-2007
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Posted by wa3cuj on April 4, 2007, 10:23 pm


I am in the process of staining the interior wood on 32 Peachtree double
hung windows. It was suggested that I go over the stain with an exterior
clear finish to protect in the event that there could be some condensation
on the widows during the heating season.

One supplier recommends Sikkens Exterior Door and Window Cetol satin finish
(a product I never heard of) and another supplier recommends using Helmsman
Exterior Spar Urethane.

Does anyone have experience sufficient to say that one is superior to the
other?

Thanks.........Bob



Real Goods Solar, Inc.
Posted by Edwin Pawlowski on April 4, 2007, 10:59 pm



>I am in the process of staining the interior wood on 32 Peachtree double
>hung windows. It was suggested that I go over the stain with an exterior
>clear finish to protect in the event that there could be some condensation
>on the widows during the heating season.
>
> One supplier recommends Sikkens Exterior Door and Window Cetol satin
> finish (a product I never heard of) and another supplier recommends using
> Helmsman Exterior Spar Urethane.
>
> Does anyone have experience sufficient to say that one is superior to the
> other?

I used Cetol on some outdoor furniture and I don't care for the color
change. It did not go on as smooth as regular spar urethane either. I'd
certainly try some on a scrap piece first to see if you like it. I'd not
use it again.



Posted by Charlie Morgan on April 5, 2007, 6:35 am



>
>>I am in the process of staining the interior wood on 32 Peachtree double
>>hung windows. It was suggested that I go over the stain with an exterior
>>clear finish to protect in the event that there could be some condensation
>>on the widows during the heating season.
>>
>> One supplier recommends Sikkens Exterior Door and Window Cetol satin
>> finish (a product I never heard of) and another supplier recommends using
>> Helmsman Exterior Spar Urethane.
>>
>> Does anyone have experience sufficient to say that one is superior to the
>> other?
>
>I used Cetol on some outdoor furniture and I don't care for the color
>change. It did not go on as smooth as regular spar urethane either. I'd
>certainly try some on a scrap piece first to see if you like it. I'd not
>use it again.
>

There are many variants of Cetol, and not all of them are pigmented. The nice
thing about Cetol is that it breathes. A problem with polyurethane varnishes is
that they do NOT breathe, and so if any moisture manages to get under it, it
lifts the varnish off. Cetol doesn't have that issue.

CWM

Posted by Edwin Pawlowski on April 5, 2007, 10:10 am



> There are many variants of Cetol, and not all of them are pigmented. The
> nice
> thing about Cetol is that it breathes. A problem with polyurethane
> varnishes is
> that they do NOT breathe, and so if any moisture manages to get under it,
> it
> lifts the varnish off. Cetol doesn't have that issue.
>
> CWM

This one was not pigmented, but like all oils and coatings, it did make some
color change. My Helmsman polyurethane coated stuff is holding up much
better than the Cetol Marine recommended by the paint dealer. Maybe that
breathing is allowing the moisture in making it worse. Perhaps a different
variation would have fared better, but after one poor experience I'm not
going to try it again. It was also very expensive for poor performance. .



Posted by Charlie Morgan on April 5, 2007, 10:36 am


wrote:

>
>> There are many variants of Cetol, and not all of them are pigmented. The
>> nice
>> thing about Cetol is that it breathes. A problem with polyurethane
>> varnishes is
>> that they do NOT breathe, and so if any moisture manages to get under it,
>> it
>> lifts the varnish off. Cetol doesn't have that issue.
>>
>> CWM
>
>This one was not pigmented, but like all oils and coatings, it did make some
>color change. My Helmsman polyurethane coated stuff is holding up much
>better than the Cetol Marine recommended by the paint dealer. Maybe that
>breathing is allowing the moisture in making it worse. Perhaps a different
>variation would have fared better, but after one poor experience I'm not
>going to try it again. It was also very expensive for poor performance. .
>

I use it on the exterior teak on a sailboat (salt water) and it is
extremely durable and easy to maintain.

CWM

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