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Mission Accomplished! - Retaining wall with tufa coating...

21 years ago

Well, my buddy Janice talked me into another mammoth tufa structure this summer! lol I loved every minute of it... well except the part about my aching back and wicked sunburn! They have a pool and we took FREQUENT swim/beer breaks. Her wonderful hubby did all the cooking for us so that we could concentrate on the work at hand.

Because this tufa was going to be applied to an existing wall, I thought it would need some extra sticking power. A friend gave me some great tips on how to do this. I wet down the bricks with water, then painted Acrylic Admix undiluted onto the bricks. I always had a batch of tufa mixed and ready to go because it had to be applied while the admix was still wet to get a better bonding. I made the tufa with 1 part portland, 1 part sand and 1 part sifted peatmoss. We diluted the admix half and half with water as the liquid to mix up the tufa with. This was because tufa was being applied to existing brick. We wanted it to be strong, a good bond, and freeze/thaw resistent. It would have been ideal to use pure admix in the tufa but we only had one 5 gallon pail of it for the whole wall. We used MOST of that pail for this wall.

It took us the good part of two days to finish this job.


These are the two 'before' pics.

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We filled in the larger openings between the bricks with scrap bricks and also filled in the holes on the top layer of bricks with sand and tile. It sure helps when you are trying to keep costs down.

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I applied the tufa to the wall about 1/2" to 3/4" thick. Then I used a shell back to imprint a 'fossilized' look.

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This was a very tricky spot. We wanted to put an 'edge' on the corner but we would have had to apply a LOT of tufa. So Janice set to work to build up the bricks so we could reduce the amount of tufa used. She was pretty proud of her architectural skills here! lol

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And this is that same corner after I tufa'd and shelled it.

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I gave Janice the assignment to carve in the 'stones' on the wall. The first section had already hardened quite a bit and was difficult for her to scratch in the 'grout'. After that it was a breeze. She used a flat screwdriver for this stage.

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These are some pics of the finished wall. There was one spot that Janice still had to carve in the stones but I had finished the tufa-ing and shelling. She is going to send me a pic later of the total finished wall.

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Signing off as a ...

"Tired but happy" Marly!

Comments (19)

  • 21 years ago
    last modified: 11 years ago

    Very nice I like the idea of using the fill that you did, I bet you could do bales of hay also for the inner part. Keep us posted on how it winters over

  • 21 years ago
    last modified: 11 years ago

    Marly, That is unbelievable! Love the fossiled shell idea. Billie

  • 21 years ago
    last modified: 11 years ago

    Great photos and an awe-inspiring project!
    Laura

  • 21 years ago
    last modified: 11 years ago

    I'm struggling to think of something more complimentary to say but I'm so stunned all I can think of is "Wow".

  • 21 years ago
    last modified: 11 years ago

    Marly, it is fantastic!

    I would ask your advice. I have a retaing wall between our backyard and the neighbours, we are on the slope, they are higher than us. Because the wall is wet, moist, I can't paint it. I want to cover it with tufa, similar to what you done, but mine is much taller, 7ft x 15ft.What do you think, would work? I don't want to cover the whole wall, just "build arches", I'm going to put mirrors under the arches, fantastic trick.
    Thanks for any help.

    Andrea

  • 21 years ago
    last modified: 11 years ago

    WOW I wish I had a wall and the time to do that with. just AWESOME!!!!!!!
    Paws

  • 21 years ago
    last modified: 11 years ago

    WOW! What a transformation to that wall! Will your friend leave it a natural tufa color or stain/paint it? I think a few years of plant maturity and a nice growth of moss and that wall will be a strong, but subtle feature in the landscape.

    Marly did it again! And thanks for the progress pics.

    David

  • 21 years ago
    last modified: 11 years ago

    WOW!! Fantastic and wonderful. You do some really incredible projects that truly inspire. Thank you for sharing. I have lots of places that could use that kind of work. You don't hire yourself out do you?
    spiderwoman

  • 21 years ago
    last modified: 11 years ago

    Hey Marly!This is amazing!!! Where do you find the time to do all the things you do?
    ))(()())(()))((()Wonder Marly Woman!!!((())))(((()))((

  • 21 years ago
    last modified: 11 years ago

    gorgeous!!!!

  • 21 years ago
    last modified: 11 years ago

    That looks great, but I have two concerns - slope and weep holes. The wall looks fairly verticle and over time the weight of the dirt may push it out. I couldn't see if you allowed for drainage weep holes.

    I really love the texture. Great job!

  • 21 years ago
    last modified: 11 years ago

    I just can not believe that a cinder block wall could ever be transformed into something so beautiful. Great work, Marly! You are a fabulous designer.
    Daisy, what are weep holes and how would you put those in? Wouldn't rebar hammered into the cinderblock hold up a wall like this?

  • 21 years ago
    last modified: 11 years ago

    Daisy, I hear ya! I asked Janice about that very thing but she wasn't worried in the least about the rebar and drainage. She said that wall has been there for four years now and she feels very confident that it won't budge now. Thanks for mentioning this. Folks that are building a retaining wall from scratch need to be aware that one needs to do a proper construction.

    And thanks EVERYONE for your kind comments. You always make my day!

    Marly

  • 21 years ago
    last modified: 11 years ago

    Just got back from vacation and what do I find - Marly has "done it" once again - what a great job you do. Congratulations.

    Jilly

  • 21 years ago
    last modified: 11 years ago

    Marly, I sent you an email a few days ago through GW concerning your trade list. I sent the one to you and a few to some other members and have had NO responses so am wondering if they actually went out? Maybe you would be willing to send me a note? Sorry that I don't publish my email--I've been very burned by doing that. I have something that I want to send to you as a thank you for all of the work you do on the forum to help the rest of us learn. Thanks!
    spiderwoman

  • 20 years ago
    last modified: 11 years ago

    Marly i know its late for asking questions about a project of over a month ago but i have to ask, how does the tufa stay on a wall/ I would think it would fall off as you put it on.I really am baffled because i've had no success yet with tufa.

  • 20 years ago
    last modified: 11 years ago

    Clairdo2, there were a lot of little spaces around each brick that I pushed the tufa into. That helped a bit. But tufa will stick to a vertical surface if it is rough enough as the bricks were. I don't know if you noticed that we applied pure acrylic admix to the surface of the bricks just before applying the tufa. That will help to bond the tufa to the bricks as the cement hardens. You just have to get the 'knack' of how thick the tufa can be before it starts to pull away from the brick due to gravity. You have to kinda pat/smoosh the tufa onto the surface of the brick. Wish I could show you what I did but I didn't take a video of the process. Hopoe that helps you a little.

    Take care.

    Marly

  • 20 years ago
    last modified: 11 years ago

    Marly,

    Ive been keeping an eye on this post since you started. You have givin me a great idea for a hillside raised bed ive been wanting to do. It looks great! Do you have a pic now that it has cured? Would love to see.

    Thanks

    carey

  • 20 years ago
    last modified: 11 years ago

    I would like to add a little bit here, from my experience. If you take a "pancake" of tufa (or ANY mix you choose to use), and slap it on something, like the concrete blocks, it usually falls off. This has been frustrating! However, if you take that pancake, slap it on, and smooth the edges into the block, it seems to grip better. Like spreading peanut butter on. Slap, smooth, slap, smooth. I found this stays up better on a vertical surface. But it is critical not to have too dry or too wet a mix. This you will have to find by trial and error. Kind of like me teaching my daughter my homemade pancake recipe. She always says, "But how do you know the consistency is right?" and I have to say, "You will just have to try and get a feel for it!", since I don't measure anything in the pancake batter, I just add "enough" liquid. Does that make any sense???

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