Seal MDF inside box?

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MBZ oe

Silver - Posts: 385

Joined: December 18, 2003

Posted: August 03, 2004 at 3:43 AM / IP Logged

Does anyone coat the inside of MDF enclosures with any type of sealer or anything? I don't mean the corners/cracks.

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ice4life8269

Copper - Posts: 112

Joined: March 31, 2003

Location: United States

Posted: August 03, 2004 at 6:14 AM / IP Logged

some people use rhino liner or other truck bed liners. i guess this is a good way to go... ALSO, don't let anybody tell you to use undercoating, because that stuff stays relatively flexible, andyou need something to make the MDF more rigid

DYohn

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Joined: April 22, 2003

Location: Arizona, United States

Posted: August 03, 2004 at 8:25 AM / IP Logged

I've found it is generally unnecessary. Just be sure all seams and openings are sealed air-tight.

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ice4life8269

Copper - Posts: 112

Joined: March 31, 2003

Location: United States

Posted: August 03, 2004 at 8:38 AM / IP Logged

werd.... use thick MDF and make sure you seal it good Seal MDF inside box? -- posted image.

MBZ oe

Silver - Posts: 385

Joined: December 18, 2003

Posted: August 03, 2004 at 1:11 PM / IP Logged

What about a coat of primer and paint? Would that help?

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DYohn

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Joined: April 22, 2003

Location: Arizona, United States

Posted: August 03, 2004 at 1:15 PM / IP Logged

Would it help WHAT? I am asking because you seem to have an idea that something is going to be wrong that you're trying to fix. What do you think you need to fix? If you use 3/4 to 1" MDF, there is no need for internal treatment or sealing on the enclosure walls. Be sure to properly design the system with internal bracing, etc. to keep it from flexing.

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MBZ oe

Silver - Posts: 385

Joined: December 18, 2003

Posted: August 03, 2004 at 1:19 PM / IP Logged

I'm not trying to fix anything. I just want to build the best enclosure I can.

I have read on here before that someone recommended to seal the inside of any MDF enclosure because it is still porous. I simply mean is there really a benefit? The box will be constructed airtight already so thats not what I'm saying.

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DYohn

Moderator - Posts: 10,741

Joined: April 22, 2003

Location: Arizona, United States

Posted: August 03, 2004 at 1:23 PM / IP Logged

OK, I understand. Yes, some people like to seal the inside of their enclosures with fiberglass resin or epoxy or truck bed liner. I have never seen any measureable differences between using interior sealant and not, as long as the enclosure is made from MDF. Cheers.

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MBZ oe

Silver - Posts: 385

Joined: December 18, 2003

Posted: August 03, 2004 at 1:25 PM / IP Logged

Thanks DYohn. I won't waste my time with it Seal MDF inside box? -- posted image.

boom, boom, boom boom....

forbidden

Platinum - Posts: 5,352

Joined: November 01, 2003

Location: Alberta, Canada

Posted: August 03, 2004 at 1:48 PM / IP Logged

If you are an anal installer like me, then you always take things to the next level. Something like this as simple as it is sets me apart from my competition. I do not do this on every box I build, but I will always at least give it a coat of spray paint on the inside of the box.

Top Secret, I can tell you but then my wife will kill me.

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