Good Sam Club Open Roads Forum: Sealing underside edge of counter top
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 > Sealing underside edge of counter top

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TheTichenors

portland, or

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Posted: 10/08/19 09:29am Link  |  Quote  |  Print  |  Notify Moderator

We have a new Surveyor 272FLS with what looks like a vacuum molded over MDF counter top. The underside edge has exposed MDF where water could potentially get to when it runs off the edge of the counter and wrap around to the underside.

I would love to seal this exposed MDF somehow before it starts to swell due to moisture. Does anyone have any recommendations?

Z-Peller

Oceanside BC

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Posted: 10/08/19 09:57am Link  |  Quote  |  Print  |  Notify Moderator

I used Elmers waterproof wood glue. Put it on my fingers and smeared it onto bare wood under edge of counter top working it in good. I let it dry then did a second coat.


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2017 Bigfoot 10.4 camper...2016 GMC 3500 4x4 Xcab Duramax Dually...

Ava

Vancouver Island. BC Canada

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Posted: 10/08/19 10:30am Link  |  Quote  |  Print  |  Notify Moderator

A strip of laminate counter top material glued with contact cement will seal it off

DutchmenSport

Indiana

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Posted: 10/08/19 11:33am Link  |  Quote  |  Print  |  Notify Moderator

Varnish, Polyurethane sealers, paint, Tomson's water treatment, even a very, very generous application of Johnson's paste wax will shed water.

riven1950

NC

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Posted: 10/08/19 11:35am Link  |  Quote  |  Print  |  Notify Moderator

My first thought would be clear exterior polyurethane or something similar.

gbopp

The Keystone State

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Posted: 10/08/19 01:57pm Link  |  Quote  |  Print  |  Notify Moderator

riven1950 wrote:

My first thought would be clear exterior polyurethane or something similar.

X2. It's quick, easy, cheap and lasts a long time.

DrewE

Vermont

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Posted: 10/08/19 02:41pm Link  |  Quote  |  Print  |  Notify Moderator

How often do you spill so much water on the counter that it runs off the edge? On the rare occasion when it happens, if you wipe it up reasonably quickly rather than letting it sit for hours, you should not have any problems with the countertop disintegrating for a very long time.

The suggestions of varnish, paint, etc. are appropriate answers to your question; I just think it's an unnecessary concern.





TheTichenors

portland, or

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Posted: 10/08/19 10:19pm Link  |  Quote  |  Print  |  Notify Moderator

DrewE wrote:

How often do you spill so much water on the counter that it runs off the edge? On the rare occasion when it happens, if you wipe it up reasonably quickly rather than letting it sit for hours, you should not have any problems with the countertop disintegrating for a very long time.

The suggestions of varnish, paint, etc. are appropriate answers to your question; I just think it's an unnecessary concern.


It might not happen often, but it does happen (especially if you are camping with kids). Sealing these edges is simply one less thing to worry about.

BruceMc

Oregon - Willamette Valley

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Posted: 10/11/19 10:31am Link  |  Quote  |  Print  |  Notify Moderator

We noticed some swelling bubbles toward the front right side of the sink on one of our summer trips last year.

I was angry.

We had MDF (Medium Density Fiberboard) with the thin vinyl layer (with the sink removed):

[image]

as well as the same garbage on the bath sink and small counter next to the bed.

Here's the results of the winter project to "seal" those countertops:

New corian & backsplash, new sink:

[image]

Bath vanity: new corian & backsplash, new sink, new faucet:

[image]

New dinette table:

[image]

All 100% waterproof.

I'm no longer angry about it!

See more Sunseeker Project Pictures on my photo hosting site.


'16 Forest River Sunseeker 2250SLEC Chevrolet 6.0L
Previously:
'00 Four Winds 26Q Class C (Ford E350 V10)
'96 Kit Sportsmaster 212f Fifth Wheel/'93 GMC Sierra K2500
'91 SunLite poptop truck camper
and the first: a Wildernest flip-top canopy.


TurnThePage

North ID

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Posted: 10/11/19 11:06am Link  |  Quote  |  Print  |  Notify Moderator

The underside of my counters is mdf, and has been exposed for the last 15 years (with kids for the first 8). Zero issues. Now, I could understand if water got past the sink edge on a continuous basis...

Maybe the quality of the mdf has changed? I dunno.


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2004 Pioneer 18T6

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