Exterior Sealant for Redwood Siding

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Forum topic by jefflz posted 03-07-2016 10:46 PM 641 views 0 times favorited 8 replies Add to Favorites Watch
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8 posts in 2651 days

03-07-2016 10:46 PM

Topic tags/keywords: exterior siding sealant

Our house has had all new growth redwood siding for about 5 years . We have been trying to keep the natural color of the beautiful new wood with a clear sealant – no stain to distort the wood color. What products cod fill this requirement?

Most of what I find has some degree of stain that we don’t want.
Thanks in advance for any suggestions.


-- Jefflz, Sausalito

8 replies so far

View bondogaposis's profile


4765 posts in 2376 days

#1 posted 03-07-2016 10:50 PM

What products cod fill this requirement?

None that I know off, UV is very harmful to wood the more pigment the less UV. There are some marine varnishes that besides being extremely expensive for a whole house would fail eventually and then need to be stripped.

-- Bondo Gaposis

View ddockstader's profile


156 posts in 3287 days

#2 posted 03-07-2016 11:15 PM

The best way to insure the redwood retains its natural color is to put a large opaque tent over the entire house, making sure that no UV rays ever strike the redwood, even bouncing off nearby shiny surfaces. Otherwise you are out of luck. Even marine varnishes with UV inhibitors only inhibit the deterioration of the wood. They don’t stop it. And they have to be renewed every few years.

View JBrow's profile


1361 posts in 945 days

#3 posted 03-07-2016 11:43 PM


Redwood is a beautiful wood and I applaud your desire to keep it natural. Unfortunately, it is a lot of work. A close friend built a home in the 1980 and covered it with cedar. He has kept it natural over the years. About every three years he applied a maintenance coat of clear finish. The home still looks very good and it is a standout in his neighborhood. However, it has gotten considerably darker with age. I am not sure anything that can be practically done to stop this natural darkening process.

My friend uses a product called Sikkens. For siding, application of several different products in their line is required initially. After the initial coatings, a single maintenance coat is needed every few years. From my understanding, there is very little, if any, prep work before application of the maintenance coating, other than washing the surface. If a sealant has been applied to your redwood, I suspect it would have to be removed before beginning the Sikkens application.

Since I am providing second hand info, I recommend contacting a Sikkens dealer. The dealer I have dealt with seems very knowledgeable of the Sikkens product line. They are “Twin Creek Log Home Supply”

Good luck!

View Jim Finn's profile

Jim Finn

2657 posts in 2947 days

#4 posted 03-08-2016 03:27 AM

Use a Latex Paint from your paint store and have them sell it to you with no color added. It goes on white and dries clear and has UV protection like colored paint does. Get the paint with the highest UV protection. #5 I think.

-- Website is No PHD just a DD214 and a GED

View conifur's profile


955 posts in 1177 days

#5 posted 03-08-2016 03:41 AM

Jim F,
Does that Latex paint that dries clear, a film finish that can blister and peel?

-- Knowledge and experience equals Wisdom, Michael Frankowski

View Jim Finn's profile

Jim Finn

2657 posts in 2947 days

#6 posted 03-08-2016 01:11 PM

I suppose it could it is, after all, just paint.

-- Website is No PHD just a DD214 and a GED

View jefflz's profile


8 posts in 2651 days

#7 posted 03-08-2016 04:48 PM

Looking at Messmers UV Plus Wood Stain Natural. Anyone familiar with this product?

-- Jefflz, Sausalito

View splintergroup's profile


2075 posts in 1248 days

#8 posted 03-08-2016 08:43 PM

I have a redwood deck that I protect with Penofin. Still looks good after 10 years, but I do re-apply every two years. (This is in the desert SW)

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