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Forum topic by ABwood posted 05-03-2019 09:22 PM 352 views 0 times favorited 10 replies Add to Favorites Watch
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ABwood

15 posts in 53 days


05-03-2019 09:22 PM

Topic tags/keywords: cedar polyurethane sealer

Hey guys! I’m new to the forum but have read some of your posts that have helped me immensely.

I’m working on a ERC live edge table. I thought I did everything necessary before applying the poly. Course sanding, fine sanding, and 2 coats of sanding sealer. I guess I didn’t use enough sealer because the knotty areas are still tacky after 7 days. To remedy I’ve tried bringing it in the house for lower humidity, heat lamp, and wiping with mineral spirits. Still tacky. Has anyone tried spot stripping just the knotty areas and reapplying sealer and poly, or do I need to strip the whole thing to be safe? Any other ideas?


10 replies so far

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Rich

4493 posts in 984 days


#1 posted 05-04-2019 12:09 AM

I’m not sure what is causing the problem. However, if you have uncured poly you need to remove, wipe it down with naphtha.

By sanding sealer, I assume you mean Zinnser Seal Coat?

-- Knowledge is not skill. Knowledge plus ten thousand times is skill. -- Shinichi Suzuki

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ABwood

15 posts in 53 days


#2 posted 05-04-2019 12:32 AM

Thanks for the reply,

My Home Depot didn’t have Zinnser, so I used Varathane Sanding Sealer.

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Rich

4493 posts in 984 days


#3 posted 05-04-2019 01:42 AM

I’ve never used the Varathane sealer, but the data online says it’s an acrylic resin. That’s good for general sealing before painting, but if you have knots that are resinous, you want a shellac sealer, like Zinnser Seal Coat. You’ll likely need multiple coats.

Also, regarding the tackiness, trust me on the naphtha. Even though you used mineral spirits, todays mineral spirits have the strong solvents removed to make them low odor and “environmentally friendly.” It also makes them useless. I like naphtha, but turpentine and paint thinner will work too.

-- Knowledge is not skill. Knowledge plus ten thousand times is skill. -- Shinichi Suzuki

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ABwood

15 posts in 53 days


#4 posted 05-04-2019 02:08 AM

Appreciate the info. So one final question, strip the whole plank and start again with Zinnser or try and patch the knotty areas?

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Rich

4493 posts in 984 days


#5 posted 05-04-2019 02:25 AM

I don’t see the need to strip any poly that’s cured. Those knots look troublesome though. Is it just the lighting in the photo, or is that large one in the lower left of the photo as rough as it looks? It looks like it has some deep voids.

Beautiful board though.

-- Knowledge is not skill. Knowledge plus ten thousand times is skill. -- Shinichi Suzuki

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ABwood

15 posts in 53 days


#6 posted 05-04-2019 02:39 AM

Not as rough as it looks. Has a little texture but I’m trying to preserve the look. That particular knot is not one of the tacky one’s and the poly seems to have filled in nicely.
My first go at a live edge. My little bit of experience has been on refinishing furniture that my wife wanted changed. My wife says I’m becoming obsessed.

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Rich

4493 posts in 984 days


#7 posted 05-04-2019 04:39 AM


My wife says I m becoming obsessed.

- ABwood

Well, without being there to see it in person, it’s difficult to give you any advice I can be confident in. Don’t give up though, your post is new and others will chime in with ideas.

I do think sealing those knots is important. Unless someone comes up with a better plan, I’d suggest getting my hands on a quart of Seal Coat, sealing those areas, then sanding smooth to prep for the top coat. Be patient, and the results should be good.

-- Knowledge is not skill. Knowledge plus ten thousand times is skill. -- Shinichi Suzuki

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ABwood

15 posts in 53 days


#8 posted 05-19-2019 11:38 PM

So I ended up stripping the whole thing down and starting anew.

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bilyo

696 posts in 1497 days


#9 posted 05-20-2019 02:26 PM

Beautiful! Good job! Love the knots.

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Rich

4493 posts in 984 days


#10 posted 05-20-2019 03:16 PM

It came out great. Looks like your obsession paid off :)

-- Knowledge is not skill. Knowledge plus ten thousand times is skill. -- Shinichi Suzuki

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