DIY Concrete Faux Stone Facade, Part 3 — Pouring The Faux Concrete “Stones”

In the event you’ve been following alongside, you realize that I had gotten so far as creating my very own silicone textured mats utilizing the precise stones on the entrance of our home after which turning these silicone mats into molds that I might use to pour my very own concrete stones for the skirting.

I attempted three totally different occasions earlier than I had success, so let me let you know concerning the failures and what went flawed earlier than I present you the success.

Take a look at #1 — Aircrete fake stones with a quick-cure concrete — FAIL

I used to be so centered on this course of that I forgot to take footage of this primary try. However my unique concept was to make my very own aircrete (which is about 50% lighter than concrete) to make my stones. I got here throughout this very useful video displaying an easy recipe for DIY aircrete utilizing gadgets you in all probability have in your kitchen (particularly in the event you’ve ever carried out a ketogenic weight loss program).

My one challenge with the method he shares is that he makes use of plain Portland cement to make the aircrete, and Portland cement takes a very long time to treatment. I hoped to discover a strategy to make aircrete with a quick-drying concrete components as an alternative of the very slow-curing Portland cement in order that I might get via a number of pours with every of my six molds in sooner or later.

Earlier than I examined this, I left a touch upon that video to ask if he thought it might work. He appears to know an awesome deal about chemistry, whereas I’m very ignorant concerning the matter. I wasn’t certain if the additional elements in a quick-dry components would negatively work together or counteract the aircrete components. He really responded inside minutes and mentioned that he thought it’d work so long as the quick-dry combine doesn’t have an mixture in it.

Sadly, so far as I can inform, there’s no such factor as a quick-dry cement combine with no mixture. The closest factor I might discover at my native House Depot is Speedy Set Cement All, which makes use of a brilliant wonderful sand as an mixture. So I made a decision to present it a attempt.

Speedy Set Cement All, when combined with water in response to the directions, units inside quarter-hour and is meant to treatment in about an hour. However once more, that’s when it’s combined with plain water. However I attempted it combined with the aircrete liquid components from the video.

It didn’t work. Or I suppose it might be extra correct to say that it in all probability would have labored had I given it extra time to treatment, however giving it two hours to dry, it had solely reached the consistency of a agency moist seashore sand, type of just like the consistency that you’d need to construct a sandcastle on the seashore. So the aircrete liquid components positively cancelled out the quick-cure function of the Speedy Set Cement All, and that’s the precise function that I wanted.

So at that time, I had two choices left. I might use the precise aircrete components utilizing plain Portland cement, which might permit me to pour six stones per day, or I might simply use the Speedy Set Cement All and blend in response to the directions (i.e., utilizing plain water) and be capable to pour a number of stones per mildew per day. I made a decision to go along with the second choice.

However since I knew I used to be going to be adhering these fake stones to the skirting space of my entrance porch, I assumed it’d assist the adhesion so as to add some texture to the again of the stone. I did this utilizing my utility knife, and I simply barely ran the blade over the floor of the concrete.

That ended up being a mistake. After which I made a second rookie mistake, once more, as a result of I’ve by no means labored with concrete earlier than. I gave it the hour that the directions say, and it felt very exhausting to the contact. However I observed it additionally nonetheless felt highly regarded, which means the chemical response that cures concrete was nonetheless taking place. However I used to be anxious, so I ignored that and tried to demold the stone.

As I used to be eradicating the stone from the mildew, it snapped in two proper down the road proven by the arrow under.

Because it was ruined, I made a decision to check out the power of the Cement All at that time, so I picked up the 2 huge items and dropped them onto the concrete, and it continued to interrupt. From the entrance, it regarded like random breaks.

However these weren’t random breaks. Once I turned the items over, I might see that the breaks on the backs have been precisely alongside these texture traces that I had made on the again.

You’ll be able to see right here that I didn’t even make these texture traces very deep in any respect, however they positively affected the integrity of the concrete.

So this was a really useful check, and an important studying expertise for a concrete beginner like me. The primary vital lesson is that you just by no means take away concrete from a mildew if it’s nonetheless scorching to the contact, even in the event you’ve waited the period of time the directions say to attend. So long as it’s nonetheless scorching, the concrete remains to be curing. It’s important to wait till that warmth has utterly dissipated earlier than eradicating it from the mildew. The second vital lesson is that you just shouldn’t mess with the again, in all probability particularly on one thing as skinny as 3/4″ fake stones.

With my new data gained from this second failed try, I used to be able to attempt a 3rd time.

Take a look at #3 — Speedy Set Cement All — SUCCESS!

Once more, I combined up a really small batch of the Cement All and poured it into my mildew. And by the best way, earlier than pouring the concrete into the mildew, I sprayed the mildew with WD-40 to behave as a mildew launch. And this time, I left the again alone.

And this time, I waited till it not solely felt actually exhausting, but it surely additionally felt cool to the contact. I’m unsure how lengthy that took as a result of I obtained busy on one thing else. I might guess it took about an hour-and-a-half or two hours. Then I eliminated the small finish piece of my mildew and eliminated the stone.

This was a hit! For this check, I used two of my molds and poured two stones, they usually each got here out nice. I feel the WD-40 brought about some discoloration, however since I’ll be priming and painted these stones, I’m not involved concerning the coloration in any respect.

I used to be so excited once I pulled these two stones out of their molds and noticed the completed end result.

Apart from the colour, they regarded identical to they might match proper in with the stone on the entrance of our home.

Due to the discoloration, it’s a little bit troublesome to get a great, correct image of the stones. You would possibly simply need to take my phrase for it. 😀 They give the impression of being so good!

UPDATE: Right here’s a comparability of the smaller one with the unique stone that I used to create the silicone textured mat.

Doesn’t that look good?! I actually couldn’t be happier with how this turned out. The humorous factor is that the pure coloration of the Cement All with the discoloration brought on by the WD-40 really has a really pure Austin stone look. However I’ll be priming and portray mine to match the remainder of the home. And there’s no want to fret concerning the WD-40 affecting the paint. I’ll be utilizing my favourite shellac-based primer first, and it’ll seal that WD-40 in order that it received’t trigger any issues with the paint.

Now that I’ve my course of down, I have to arrange an meeting line in my carport with all six of my molds in order that I can pour six at a time each two hours.