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Missionary adhesive?

Geo-TH,In

Geo-TH,In

Well-known Member
By boy bought a new house a few years ago that had a professionally build block patio with a short wall. A corner of the wall has settled because the block wall was built over the rain gutter flex drain pipe. He needs to take wall down and put a footer under wall, use a solid plastic drain pipe, then put wall back together.

Any tricks how to get the blocks apart without damaging them?

Link below has pic of blocks used in his wall.

We have no clue what adhesive was used.

Thanks for your help.
George
pic of block son has
 
Well, George, so far my wife and I haven't had to resort to adhesive for anything missionary, but I suppose that time will come.

As for your MASONRY adhesive, how hard is this stuff? If it is hard enough to drill, I think I'd first try using a masonry bit to drill through the mortar and loosen it up. Maybe if you get a hole started, you can cut it with a Sawzall.
 
I think it would be easier to lift the wall and pour a cement footer under it than take the wall apart. Masonry cement holds better than silicone or liquid nails.
 
Hi George,

I'm pretty sure that these are Unilock cap and wall stones. The recommendations for construction is to use construction adhesive to secure the cap stones on top. Most wall stone installations do not use adhesive. Let's hope you get lucky in that regard. You might go to the Unilock website or call a Unilock outlet and talk to them about your situation. If you can find out who the contractor was that installed the wall, it might still be under warranty.

Larry
 
First George who tells him to put a footer under the drain--not saying that is not what to do--just asking who says. Now as far as separating the blocks if it has already settled then the mortar between the blocks at that point is already cracked or the blocks are cracked and will have to be replaced. Now use a hammer and knock the blocks apart till you get to a solid wall; then use a cold Chisel to clean the good blocks of mortar. Build the footer so it is level with the bottom course of blocks--remembering to build in the drain--Then when set up rebuild the wall. Which will be all kinds of fun. Remember you'll need some new blocks.
BTW Larry-on-the-corner can give more or better advice cause that was what he did during his working life.
 
If it's a masonry product, like mortar, and you have a compressor, a pneumatic chisel will get it off.

That's what I used to take up tile and get thinset off the slab.

It would also get between the bricks to separate them.
 
You can see, they put a short wall over a 4 inch flex drain pipe. The house was built by different people than built the patio.
People who built the house only lived there for a year, then got transferred to Arizona. They had the back patio built, very expensive.

There is also a gas line going to BQ grill which is settling.

Where it has settled, part of the wall has separated. No block are broken which supports what someone said, only the top is glued. Mortar can is easily broken with a chisel and hammer. The adhesive doesn't want to break lose.

I have an old plow shear. Might try to make a long chisel with a handle and wack it with a 12# sledge. Something will have to give.

The wall has to be removed, better footer, move drain pipe, then rebuild wall.
 

Five inch wide unsupported distance would not cause a problem with that wall. There has to be a significantly wider area that was soft.
 
We build them every day. Depends on what glue they used, how much was used and the porosity of the block. Try a chisel to split them apart at the seams. Maybe if some get messed up you can borrow some block from somewhere else on the project or match them since it?s newer. Let?s hope they didn?t use the glue you?re supposed to, it holds good
 
Wall begins next to the down spout. If pipe got crushed, the rain water caused the ground to get soaked. What else would cause the
wall to settle? We need to take wall apart, then rebuild everything, including the drain pipe. How to get it apart will be the
challenge without totally damaging the block.
 
(quoted from post at 03:47:41 04/25/19) Wall begins next to the down spout. If pipe got crushed, the rain water caused the ground to get soaked. What else would cause the
wall to settle? We need to take wall apart, then rebuild everything, including the drain pipe. How to get it apart will be the
challenge without totally damaging the block.
Click to expand...


"What else would cause the wall to settle?"

Today's construction practices, LOL. Two years ago a new house went up just up from mine. There was never a piece of compaction equipment on site during the whole process. By the time the snow was gone the next spring the driveway dropped six inches where it transitioned into the garage. The front step tilted towards the house at a 30 degree angle. The septic tank was up out of the ground six inches.

Your sons wall has dropped next to the house. Same thing.
 
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