Tile floor help

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Forum topic by MedicKen posted 12-04-2010 06:06 AM 1523 views 0 times favorited 10 replies Add to Favorites Watch
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1615 posts in 4343 days

12-04-2010 06:06 AM

I posted this over on the refurbers site a few days ago and no response as of yet. I was wondering if anyone here might have an opinion.

-- My job is to give my kids things to discuss with their [email protected]

10 replies so far

View edgarO's profile


68 posts in 3785 days

#1 posted 12-04-2010 06:18 AM

My dad has a tile business and i used to help him alot. you should be fine over the concrete. just make sure the floor is level. if there are any cracks on the floor you need to make sure that you patch them or the cracks will pass along to the tile. Make sure the floors are clean. if there is any dust on the floor the thinset will not bond correctly to the concrete and it will come up.

View dannymac's profile


144 posts in 3896 days

#2 posted 12-04-2010 06:25 AM

agree with edgar. i’ve done quite a few tile floors myself best if you just pick up a few bags of floor leveler mix soupy and it with level your floor and fill any voids and cracks let dry 24 hours the start tiling away

-- dannymac

View semi75's profile


78 posts in 3781 days

#3 posted 12-04-2010 07:22 AM

After it is level I consider concrete the standard for tile adhesion. Again that is if it is level, dry and not prone to moisture or cracks. When concrete is unlevel it is a pain in the rear to tile over but then again so is any unlevel surface. You have good advice already but add in checking the moisture and seeing if the concrete is sealed. Laying tile with thin-set over sealed concrete doesn’t work well at all, the thin-set can’t dry very well as the concrete can’t absorb the moisture. I had a 3×3 area I must not have gotten the sealer off well last year while tiling in my basement and the thin-set never dried under my porcelain tiles. Travertine should breathe a little better but I wouldn’t count on it.

I haven’t used Ditra yet, I wonder how hard it is to scrape off the concrete if you ever want to pull the tile up. With travertine I doubt you will though for a long while.

View edgarO's profile


68 posts in 3785 days

#4 posted 12-04-2010 09:09 AM

oh yea if you have any paint on the concrete make sure you take it off as well.

View MedicKen's profile


1615 posts in 4343 days

#5 posted 12-04-2010 07:36 PM

The floor is level and there are a few small crack that will reguire some grinding and filling, fix-all should do the trick. The house is currently carpeted and vinyl in the kitchen and bath. The vinyl will come up as well, not looking forward to scraping the vinyl and adhesive off though. I have spoken to a few installers here and they are 50/50 on the Ditra. some of them have used it and swear by it and others say t can go either way. I think for this install I will skip it, the stuff is expensive, it’s $485 for just over 300 sq ft of the stuff.

-- My job is to give my kids things to discuss with their [email protected]

View edgarO's profile


68 posts in 3785 days

#6 posted 12-05-2010 12:32 AM

the ditra we have never used and is not something we do use. My dad is the contractor for charles martin homes, which are multimillion dollar homes and we have never used ditra. we do tend to do a mudset. but that goes above the average diyer. you should be a-ok going over the concrete.

View Dennisgrosen's profile


10880 posts in 3996 days

#7 posted 12-05-2010 12:52 AM

the concrete is what we use here in europe too
but you talk about cracks then I wonder if there is a 1/4 inch iron net in the concrete
if not you have to renew the top of the concrete or ells you will continue fighting with cracks all over the house
the net is to prevent concrete from moving and make the cracks
just my thought you shuold invastigate before tiling


View blackcherry's profile


3344 posts in 4704 days

#8 posted 12-05-2010 01:18 AM

The most important part of laying a tile floor is making sure the low void in the floor has been leveled with thin set before trying to lay tile. Take a 4 or 6 ft. level and check for dips in the floor and mark the areas with a marker and then float the floor level with a leveling agent, ie thin set. Hope this help with your installation…BC

View dbol's profile


136 posts in 3878 days

#9 posted 12-05-2010 02:54 AM

Go here. You will get quick accurate information.

View live4ever's profile


983 posts in 3891 days

#10 posted 12-05-2010 05:54 AM

I recommend Ditra, especially if you haven’t done much tile work before. I also second the johnbridge forum recommendation – I studied that forum religiously before doing my first tiling job. They really know their stuff over there (a lot of pros hang out there and provide advice), though be warned if you start listening to them too much you’ll probably end up using Ditra.

Travertine or any other natural stone has less of a tolerance for unflatness compared to porcelain or ceramic. So just take care to really level out that floor before laying the tile.

-- Optimists are usually disappointed. Pessimists are either right or pleasantly surprised. I tend to be a disappointed pessimist.

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