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Unread 02-24-2007, 05:51 PM   #1
Rick B
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Hot Mop or CPE

I live in California. I had 3 guys give me a quote for a mortar shower. All 3 suggested that I hire someone to hot mop the shower pan prior to them starting the shower. I have read that CPE is the way to go. I will install it if necessary. What is the advantage of hot mop, if any? Why is it only used in California?

Do the shower installers walk on the pan as they install the moisture barrier, wire and mortar on the walls? Is this the risk of CPE?
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Unread 02-24-2007, 10:07 PM   #2
td
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Rick,

I live in Ca too, I had one shower hot mopped and it's working fine...not sure why were the only ones that use it, bit if you decide to go that way...i wouldnt worry about it, it will be fine.

Im in the middle of a Kerdi shower now...you might want to check Kerdi out.

Good luck
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Unread 02-25-2007, 03:01 PM   #3
Scooter
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The Top 10 Reasons Why Guys in California Use Hot Mops:

10. Its Cheap.
9. They Don't Want to Do It.
8. They Don't Understand Newer Products
7. Its Easier.
8. Its a Old School.
7. It Gives Illegal Alliens Something to do.
6. Its Faster.
5. No Measuring or Cutting.
4. Its Code.
3. Hard to Make a Mistake With.
2. They Don't Have to be There

And the Number One Reason Hot Mop is so popular out here:

1. If the Membrane Fails, They Don't Warranty It.

While it may sound like I am slamming hot mops, I will say if done properly, (3 layers of felt and hot tar physically mushed together without clogging the weep holes with an aggressive preslope), they will last 20-50 years.
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Unread 02-25-2007, 03:17 PM   #4
mctile
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Scooter-

Not sure how accurate your perception a of hot mop is. It is definitly not cheaper. Plan on $400-$500 for a standard shower. In no way is it faster. A bladder can be installed in a quarter of the time with no wait afterwards(for the tar to set up). I installed CPE for a long time and have recently started using hot mops. I was always a little worried about waterproofing with the bladders.A pinhole could ruin the whole installation. Hot mop is a good piece of mind. The only thing that you want to keep a close eye on is the weep holes. Even when I tell the senor hot mop dude to keep them clean, I alyays check and usually have to clean them out. I know I will get slammed on this forum for saying it, but there is nothing wrong with hot mops.
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Unread 02-25-2007, 03:31 PM   #5
John Bridge
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A little history here.

When I worked in L.A. in the early seventies you could get a pan mopped in for $50.

At the time, PVC and CPE were not appoved for L.A. County.
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Unread 02-25-2007, 05:36 PM   #6
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CPE = life time warranty, and has isince 1968! it is now listed and accepted by CA.(including LA.) codes! (and has been for more than 25 years)
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Unread 02-25-2007, 09:13 PM   #7
Scooter
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I get an illegal allien with a beat up Red Toyota pickup with a stove and tar cooker in the back to hot mop a shower for $150. Takes less than 30 minutes.

More often than not, if I'm not there, and if he's in a hurry (Immigration is on his hindquarters), the weep holes will be clogged, and I'll spend another 30 minutes on my bad knees cleaning them out.

But, I'll tell you sometimes the time I spend waiting for these idiots to show up, I could buy, measure, cut, seam, fold, embed, and attach a sheet membrane.

I take no stock in any manufacturer's warranty. Most will cover only the replacement cost of their product. So if the darn thing fails, I have to rip out the shower, replace all the materials and my time, spend $10K, and biggie wow, I get $100 from the Nobel Company. That assumes we don't have a blamestorm after the failure with the conversation being "Prove it to me that it was our product that failed and not your installation."
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Last edited by Scooter; 02-25-2007 at 09:19 PM.
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Unread 02-25-2007, 09:55 PM   #8
Davy
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Good point about the Warranty.

I've seen Hot Mops rot out in 20 to 30 year showers. I doubt there were preslopes. Maybe they will last 50 years with a preslope. If I'm gonna build a 75 year shower, I want the pan to last as long, if possible.
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Unread 02-25-2007, 10:09 PM   #9
mctile
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Scooter-

$150 hot mop??? I would love that hook up. I'm not kidding-I pay $400 a pop minimum (depending on the size of the pan) and I know contractors that pay even more. If you wouldn't mind, I would love the number of a good hot moper that is in and out for $150.00.
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Unread 02-26-2007, 11:41 AM   #10
Scooter
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I wouldn't have any down there. Mine are all in the Valley, in Pacoima, the little Bario. If I were you, I'd hit a DalTile or other Tile store down there and ask the manager for some recommendations. Man, I would think down in San Diego, they'd come over the border in droves.
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Unread 02-26-2007, 06:10 PM   #11
John Bridge
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I lived in San Diego after I lived in L.A. They don't linger in S.D. Too close to the border. They much prefer to settle in up around L.A. or farther north.

Matthew, why don't you start installing PVC or CPE? Man, for $400 bucks I could make a nice living at it. Give me two a day.
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