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Old 03-18-2013, 10:19 AM   #1
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Default Spraying pigmented shellac

Snow day here in the great WHITE north.
Anyway, I have a fire job coming up, and i need to coat the entire attic with shellac. I am using SW brand. Question is cnoice of spry tip. I ve never spayed this or BIN, have rarely had a need to use it at all,. Any "tips" would be appreciated. thanks steve
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Old 03-18-2013, 10:27 AM   #2
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I have done many insurance burn outs.

Suit up, mask on, kilz that mutha'!

The largest was 37 gallons.
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Old 03-18-2013, 11:26 AM   #3
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Thanks Wise, I am stuck with specs for shellac. any advice on tip sizes?
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Old 03-18-2013, 12:19 PM   #4
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You can use up to a 15. Remember that you're wanting to coat everything to seal it. Have lots of resp. canisters to change out, otherwise you're going to feel it. BTW: Kilz is shellac-based.
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Old 03-18-2013, 01:40 PM   #5
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Wolfgang, Did not know that about Kilz, since clean up is with spirits. Anyway already have product. thanks
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Old 03-18-2013, 02:12 PM   #6
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KILz is not shellac based you cut it with paint thinner. as far as tip size for shellac I would use a .513 myself.. just my 2 cents
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Old 03-18-2013, 02:13 PM   #7
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KILz is not shellac based you cut it with paint thinner. as far as tip size for shellac I would use a .513 myself.. just my 2 cents (also I have a fresh air respirator will never do that kind of work without one again
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Old 03-18-2013, 03:16 PM   #8
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I stand corrected, I had it mistaken with another pigmented sealer. Pass it off as old age....
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Old 03-18-2013, 04:17 PM   #9
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I too have expienced "senior moments" too dam many have good day!
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Old 03-18-2013, 04:34 PM   #10
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My "senior moments" have long ceased just being "moments". You'd think a guy whose business included a large amount of ins. resto. fire work would know better, but to be honest, I ended up having to go to mainly oil-based sealers due to a sensitivity of shellac based products.
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Old 03-18-2013, 04:54 PM   #11
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Quote:
Originally Posted by Wolfgang View Post
My "senior moments" have long ceased just being "moments". You'd think a guy whose business included a large amount of ins. resto. fire work would know better, but to be honest, I ended up having to go to mainly oil-based sealers due to a sensitivity of shellac based products.
Wolf , Im just a pup and I have senior moments 24/7. Notes all over the place so i don't forget. After all these years I've developed a sensitvity to latex paint ! oddly shellac and methyl hydrate dont bother me bother me bother me Kinda glad it'll soon be over.
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Old 03-18-2013, 06:47 PM   #12
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I agree with 513 tip. Full face mask, air supplied best choice, or have lots of filters. You can test positive for alcohol after spraying shellac. Be careful.
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Old 03-18-2013, 07:08 PM   #13
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Hey guys, new guy here. I've done a handful of smoke seal jobs, and the good ol 517 seems about right. Anyone else spray the lowers and floor one day and the uppers the next to get a good seal on the floor? I have a 7k square foot burn out coming up and don't want to miss anything.
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Old 03-18-2013, 07:15 PM   #14
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With the high prices of shellac best to use a tip that will be as transfer efficient as possible. For engineered rafters I would be probably a 311. Underside of the roof sheathing probably would use a big wall tip.

@Coastpainter you should be able to spray it all in a day.
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Primer makes everything better...
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Old 03-18-2013, 07:25 PM   #15
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Quote:
Originally Posted by MNpainter View Post
Snow day here in the great WHITE north.
Anyway, I have a fire job coming up, and i need to coat the entire attic with shellac. I am using SW brand. Question is cnoice of spry tip. I ve never spayed this or BIN, have rarely had a need to use it at all,. Any "tips" would be appreciated. thanks steve
My tip would be don't use sw brand!
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Old 03-18-2013, 08:09 PM   #16
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Quote:
Originally Posted by straight_lines View Post
With the high prices of shellac best to use a tip that will be as transfer efficient as possible. For engineered rafters I would be probably a 311. Underside of the roof sheathing probably would use a big wall tip.

@Coastpainter you should be able to spray it all in a day.
The insurance company bought the materials and paid me to go up there once to spray it. A 315 gave me the coverage I needed with a good enough transfer efficiency with assurance of sealing it completely.
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Old 03-19-2013, 01:08 AM   #17
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Quote:
Originally Posted by Wolfgang View Post
I stand corrected, I had it mistaken with another pigmented sealer. Pass it off as old age....
Huh...I thought the same thing...
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