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Old 03-05-2020, 10:51 AM
 
Location: Coastal Georgia
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I’ve failed to find a definitive answer online.

We are installing cedar siding on an addition. I know you are supposed to prime or stain the cut edges before installation. What I can’t seem to find out is if it’s necessary to prime the back side of the boards? We will be using solid stain on the outside, and will probably just use Kilz on the cut edges, since I haven’t decided what color the stain will be yet.

I seem to remember watching them install cedar shingles on This Old House, and they didn’t prime them first.
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Old 03-05-2020, 02:05 PM
 
Location: The Triad
34,088 posts, read 82,953,336 times
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Quote:
Originally Posted by gentlearts View Post
Does cedar siding need to be primed?
I’ve failed to find a definitive answer online.
No. It doesn't need to be stained either.
That was always the largest the appeal of using cedar.

I'd still do it. Stain. Not paint.
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Old 03-05-2020, 02:15 PM
 
Location: Coastal Georgia
50,366 posts, read 63,948,892 times
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Quote:
Originally Posted by MrRational View Post
No. It doesn't need to be stained either.
That was always the largest the appeal of using cedar.

I'd still do it. Stain. Not paint.
We have some existing cedar siding that is already covered in a solid stain, so that is why we have to use solid stain also, since we want a different color. Too bad, because I would like the natural.
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Old 03-05-2020, 04:31 PM
 
Location: Johns Creek, GA
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Primer; no.

But a sealer will definitely help with the finish coat(s)- limiting the amount of absorption.
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Old 03-05-2020, 05:17 PM
 
Location: Coastal Georgia
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Quote:
Originally Posted by K'ledgeBldr View Post
Primer; no.

But a sealer will definitely help with the finish coat(s)- limiting the amount of absorption.
Why would I want to limit the amount of absorption? Isn’t that the point of a stain?
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Old 03-05-2020, 05:49 PM
 
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Cedar is soft and porous compared to other woods so it breathes well and would not be necessary to back-prime the material.

Since you are using solid stain, you have great sun protection for the wood. On our last house, I installed clear tongue & groove cedar and it was a nightmare to keep it looking good with a semi transparent stain.
It need attention every 3 years and I finally went with a semi-solid stain to minimize the maintenance and re-applying a new top coat.
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Old 03-05-2020, 08:05 PM
 
Location: Johns Creek, GA
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Quote:
Originally Posted by gentlearts View Post
Why would I want to limit the amount of absorption? Isn’t that the point of a stain?
Yes. But...

Using a solid stain can be somewhat finicky getting a consistent color coverage. The sealer makes that more possible.
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Old 03-05-2020, 10:34 PM
 
Location: Lost in Montana *recalculating*...
19,743 posts, read 22,654,259 times
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Quote:
Originally Posted by gentlearts View Post
I’ve failed to find a definitive answer online.

We are installing cedar siding on an addition. I know you are supposed to prime or stain the cut edges before installation. What I can’t seem to find out is if it’s necessary to prime the back side of the boards? We will be using solid stain on the outside, and will probably just use Kilz on the cut edges, since I haven’t decided what color the stain will be yet.

I seem to remember watching them install cedar shingles on This Old House, and they didn’t prime them first.
Soft woods, like cedar, accept stain in weird ways. There are hard spots and soft spots, and the stain will 'blotch' if not sealed.

In any event- end sealing and back sealing the unexposed surface will prolong the life of the siding.

In 1999 we built a cedar sided house in WV and it is VERY important in humid environments. At the time we followed the protocol using Sikkens products and we still had to re 'stain' the wood after 5 years.

It's one of those things you really have to get it right to protect your investment. You don't want to skimp here.
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Old 03-06-2020, 04:36 AM
 
Location: Coastal Georgia
50,366 posts, read 63,948,892 times
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Thank you, all.
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Old 03-06-2020, 05:14 AM
 
6,359 posts, read 4,181,873 times
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Quote:
Originally Posted by Threerun View Post
Soft woods, like cedar, accept stain in weird ways. There are hard spots and soft spots, and the stain will 'blotch' if not sealed.

In any event- end sealing and back sealing the unexposed surface will prolong the life of the siding.

In 1999 we built a cedar sided house in WV and it is VERY important in humid environments. At the time we followed the protocol using Sikkens products and we still had to re 'stain' the wood after 5 years.

It's one of those things you really have to get it right to protect your investment. You don't want to skimp here.

Exactly correct and Sikkens was the best name in lasting stains and finishes. The Proluxe Carol SRD (translucent) was considered to be one of the best possible stains for cedar. I believe that company now merged with PPG.
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