Bathroom Addition - V2 | Page 13 | Construction and DIY projects | Forums

Inspection passed! Concrete comes tomorrow as well as (hopefully) everyone who has volunteered. After speaking with my wife we have scrapped the curb (I tend to complicate things when possible) and so I'm not as concerned about the process, just the finishing. I think what we botched last time with the patio was not waiting for the bleed water to fully evaporate so we got a chalky finish (still coming off). 

More photos to come tomorrow.

It was for water concerns. I'll just excavate some more though.

Well, that went interestingly. Fortunately we had some extra hands, family of a friend that's no longer in town. They've done concrete for several years so I didn't actually do much beyond logistics. The concrete guy had not formed all the way to the base of the trench and I was lazy so we used a little extra concrete but it's definitely solid.

I added some re-mesh to the top to make walking around safer during the pour and when re-reading the civil engineer's specs he recommended it for any floor that would receive tile.

Concrete showed up along with the pump truck (3.5hrs late). Went with the pump just for convenience and for my lower back.

We started by filling the perimeter beams and vibrating the concrete to ensure that we didn't have any air gaps.

Then we started screeding from the back to the front. You can see the temporary guide that we put into the house wall to ensure that we got a straight line. Absolutely recommended for anyone pouring up to an existing foundation!

Then we waited around till midnight just waiting for it to cure enough to finish it. The fellow with more experience didn't really ever let the bleed water evaporate, he just kept scraping it off with a magnesium trowel. The concrete company just "forgot" to do my slump test and by the time I heckled them enough it was too late. When using a pump you should always have a designated part of the yard for line priming and flushing.

Just finished pulling the forms off (PITA, the framer put the nails in from the inside of the form) and some friends are coming to help frame the exterior walls this weekend. Hopefully no surprises!

The pump was $550 because it was late, standard price is $650 because they rip you off. If you get a second company it's only $400 but I didn't want to coordinate. Concrete was $140/yrd3. I should have shopped around more but limited my options by opting for a company that had a pump trailer.

That's what it should have been. Central Texas prices are inflated right now as well.

Question: Should I apply a waterproofing to the exterior walls of the slab before backfilling? I was considering not doing a parging coat for time concerns.