Concrete shower floor
I am rebuilding the shower stall in our master bathroom and need some advice for pouring and curing a concrete shower floor.
I used a 40 mil pvc membrane to form a pan and poured the shower floor using "sackrete".
Seven days later( this morning), I ran my hand over the concrete to check and see if the floor was dry and had cured enough to continue work. However, when I rub the floor.....the cement (dust) seems to come up out of the floor.Is that normal? I am afraid to continue work--- since this shower is up stairs and over my dining room--
I want to be certain the floor is good. My intent is to apply ceramic tile over the concrete but I am not sure it is safe to continue.
Did I use the correct product for a poured concrete shower floor ? The aggregate in the "sackrete" seemed to be a large size for a smooth floor. Can I use a premix mortar ?
Can I use a concrete sealer (water proofing) like "damtite" over the cured concrete- to ensure no leaks thru the concrete to the 40 mil pvc membrane? Will the grout (for ceramic tile) stick to the sealer?
I appreciate any help and advice you can offer.
I'm not a concrete expert but have built many shower bases like your project (they are the best)- so I'll try to help.
Can't understand the concrete problem after seven days - should certainly be cured enough by now. Did you "play" with it too long? If so, the cement content of the mix may have come to the surface and can in fact be "dusted off". The base is probably ok but if you are doubtful about the finish (is it too "rough"?) you can use regular mortar mix to smooth it out. It has been proven that when applying a thin smoothing coat over existing concrete, a coating of "white glue" helps to bond the new mix to the old.
As for the sealer, I never use this, at least at this stage. I think that with your PVC membrane, concrete, ceramic tile and grout, the chance of water seepage is probably non-existant. However, as a belt and braces precaution, I usually give the finished base a good coat of silicon sealer (available in stores for this specific purpose).
Incidentally, although they are not as readilly available these days for some reason, I like to use 1"x1" mosiac tiles - they "mold" to the base contours very well.
Hope this helps and good luck. Alan
- 15 Old House Features We Shouldn't Abandon
- 17 Tiny Bathrooms We Love
- 30 Things Everyone Should Know
- 25 Insanely Easy-to-Make Holiday Ornaments
- 20 Easy 60-Minute Home Improvements
- 10 Classic Ways to Brighten Up a Dark Room
- 10 Quick and Creative Stocking Stuffers
- 133 Smart Storage Ideas for the Whole House
- 7 Unauthorized Uses for Common Appliances
- 8 Ways to Make a Small Room Look Big
- Best Secret Hiding Spots We've Ever Seen
- Sweet Dreams: 15 Inventive Beds You Can Make Yourself
- 11 Ways to Winterize Your Home
- Laundry Room Ideas to Knock Your Socks Off
- 10 Must-Do Projects for November
- 8 Cheap and Unique DIY Nightstands
- 15 Eye-Catching Options for Your Front Door
- Supersize Your Small Bath with 8 Pro Tips
- 8 Unique Ways to Build Your Own Table
- Woodworking for Beginners: 10 Projects
- 10 Houseplants You Can Grow ANYWHERE
- 10 Doable Designs for a DIY Rug
- 7 Incredible Uses for Salvaged Lumber
- 10 Bookcases You Can Make Yourself
- 7 Mistakes Not to Make with Your Fireplace
- The Easy 1-Hour Money-Saving Home Checkup
- Quick Fixes for a Fresher Shower
- Don't Try This at Home: 7 Dangerous DIYs
- 10 Ways to Redecorate Without Spending a Dime
- The Top 10 Artificial Christmas Trees