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Unread 05-16-2014, 12:12 AM   #2386
Giuseppex
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Clean crisp corners are not very important in my opinion for tile mud scratching and everyone has there own method and tools for applying mud in either inside or outside corners.

First and foremost is getting used to the hawk/trowel and then learning that nothing has to be perfect with mud on the initial application. All you are trying to do on the first pass is getting it on the walls and then come back when it's more workable on the second and third to clean it up. Alot of people try to make things perfect on the first pass and that is not going to happen especially with corners. Throw it up there heavy initially and then clean it up 20+ minutes later.

Watch some youtube videos on thin walling or veneer plastering and see how they approach corners for tips. That's the most difficult mud in my opinion.
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Unread 05-16-2014, 12:28 AM   #2387
jwmezzanotte
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John

looking at the mud on your mud board on the picture you posted, looks like the mud I was using last week. I finally added some lime to the quickrete "masonry mix" I've been using. I cannot believe I've been doing it without so far, the aggravation I have had!
On the plus side, I got used to working with that, so using it with lime (one shovel/bag) is so much easier now

Ive been back to see that last job since, no hairline cracking anywhere. So I guess I'm ok with 1 shovel per bag.
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Unread 05-16-2014, 05:53 AM   #2388
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I guess I missed that you were using Quickcrete. I've never had much luck with that stuff, except for the floor mud (Sand Topping Mix). We used to make the mud from scratch with equal parts of lime and cement -- maybe a touch more cement than lime. When I first came to Texas nobody knew what lime was used for, and it was hard to get. That's when I started using masonry cement with a shovel of Portland thrown in . . . or bagged mortar mix put up by thinset baggers.

On sharp corners, I think all us old-timers go back to the radius bullnose and quarter-round days. There was no sense in trying to make perfect corners when you needed to round them off for the trims. Oh, for the days when all wall tiles were 4-1/4 inches square.

Tap, It's easy to misunderstand on the Internet. Try using the smilies to let people know you are jesting -- at least until you learn proper American innuendo.
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Unread 05-16-2014, 08:01 AM   #2389
blue_can
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I'm currently using Quickrete Scratch and Brown stucco mix and it seems to be working okay. Certainly is much faster than having to meter out cement, sand and lime from scratch which is what I did for my first shower.

I tried getting the "Tom Duffy fat mud" suggested by Marty earlier in this thread only to be told they only sell to trade and I needed an account to order. Marty does not seem to have posted in a while?

Well okay kind of hard to explain my problem but when I get to the facing wall and niche/boundary I have some difficulty maintaining or building thickness as when I push the mud in it squishes into the open area. In addition there is the issue of the mud pulling off when screeding past and horrible looking edges .

On Davy's suggestion for my previous project I framed the openings with 1X4s and found that works well especially if you are working alone as you don't need someone to stand there with a float or whatever, and it also prevents the mud from squishing into the open areas. I find if I remove these an hour or two after screeding it leaves a nice crisp edge around the opening.

I guess I will do that again as it seems to work for me.
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Unread 05-18-2014, 08:36 AM   #2390
Arizona Floors
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Here's the fireplace now, no the opening is not complete. Added lighting. Waiting for tile, going to be a few weeks.

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Unread 05-18-2014, 08:59 AM   #2391
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60 years of outstanding service

60 years of outstanding service needed removal for upgrade -- a small project -- .

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Unread 05-18-2014, 09:05 AM   #2392
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Same technique as 60 years ago

Besides being a 1 1/4 out of level , the subfloor condition was '' as new '' . We decided to go with the same technique as originally used , after screw attaching the wood planks .

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Unread 05-18-2014, 09:09 AM   #2393
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Mud bed as per 100's of years ago

Mud bed installation . " Easy '' part of this project . What a great feeling after all hard work is done .

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Unread 05-18-2014, 09:12 AM   #2394
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Mud bed as per 100's of years ago

Mud bed installation . " Easy '' part of this project . What a great feeling after all hard work is done .

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Unread 05-18-2014, 09:15 AM   #2395
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Mud bed as per 100's years ago

Mud bed installation . " Easy '' part of this project . What a great feeling after all hard work is done .

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Now , ready for heating cable , uncoupling membrane , tile and epoxy grout -- the improved method -- .
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Unread 05-18-2014, 09:50 AM   #2396
jwmezzanotte
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^ awesome

I did a little thin deck mud over a slab to raise one area the other day, about 3/4".
Im using concrete sand, was having a bit of trouble with larger aggregates (about 1/4") in my mix.
Do you guys screen your sand? How fine?
Im thinking about making a screen with lath over a wood frame. Think that will be fine enough for deck mud mix, or should I find a tighter screen material?
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Unread 05-18-2014, 09:56 AM   #2397
Obie1
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I only use washed plaster sand in my mud
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Unread 05-18-2014, 10:19 AM   #2398
eurob
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Size:  46.4 KB Sand used for this project , John .

When projects are bigger or more accommodating , we buy it by the ton . Find out a supplier which knows about mud beds and they will deliver the right sand for you , screened already -- 1/4 is to big -- .

Best is to go to the supplier and see what they can offer you -- range for screened sand -- , then choose the coarse sand without the small rocks in .
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Unread 05-18-2014, 01:27 PM   #2399
Davy
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Nice job, Roberto. Good to see a nice mud job.

Yeah, concrete sand has pea gravel size rock, sometimes bigger than that. Find a masonry supply that has plaster sand. Plaster sand grit is probably 1/8 and smaller. It's a little courser than brick sand. The supplier I use has brick, plaster and concrete sand. They sell it by the cubic yard but I can get a 1/4 or 1/2 yard also.
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Unread 05-20-2014, 11:15 AM   #2400
John K
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When I asked John to make this thread some 12 years ago. I floated a 3 wall shower with body sprays and a glass block window on the right wall looking into the vanity area.

I went to the job planning on using backerboard but the contractor had everything so cut up that there was little to anchor to. The shower was to get a 18x18 marble with a lot of color and "movement". I don't remember the name.

Anyway I lathed it and scratched it with synthetic mud (Custom's Float), lightweight with perlite.

Does anyone here use lightweight mud?
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