Need to raise floor 2 inches.

[kramer4583]

Hello, Im new here.

I mostly do carpentry and wood working but I have done about 2 dozen tile installs, but I have never come across anything like this.

The room of the house is on a slab, most of the area has hardwood floors installed on 1x sleepers, with 3/4" plywood, 2-1/4" total. I have two areas (entry, and fireplace hearth) where I will need to raise the floor almost 2 inches to match the tile up to the height of the hardwood. What should I use?

Also, the slab appears to have had some asbestos/vct tile applied and removed long ago, but there is a red/pink adhesive still on the concrete, should this be cleaned, or removed somehow?

Thank you.

[Lazarus]

John~THe simplest solution would be to raise the area with floor mud.

[PetrH]

Jup, like Laz said. He's referring to a mortar bed of portland and sand bonded to the slab with a thin coat of thinset. Same way you'd make a shower pan.

Or you could just have it tiled 8 times

[cx]

Welcome, John.

What Injineer Bob said.

Your mud must be a minimum of 1 1/4" thick to make it work.

[Davy]

Regardless if you bond it or not, notch a stick the tile thickness, plus an extra 1/16-1/8 for thinset and use it around the edge of the hardwood. This will control your mud height.

[Davy]

Here's another pic of the floor after it's mudded with the tile against the hardwood.

[kramer4583]

Thanks for the advice! I should be able to do that. This will be my first mud job. I read the liberry articles, but does the mud get packed in, or just screed to the height I need and its done?

This area is in a corner, so I sould notch my screed on one end to use against the hardwood, and use something of the correct thickness setting on the slab as a guide on the other end of the screed?

[kramer4583]

Thank you, I will let everyone know how it turns out, with pictures!

[Davy]

Here are some mud screeds like Bob was talking about. Using a straight edge, pull back and forth until the screed is the correct height and then fill in the middle with mud and pull it even with the tops of the screeds. Then slick it down by troweling over the mud.

[kramer4583]

Awesome pictures, would it work ok to use a laser level to get the correct height for the mud screeds?

[Houston Remodeler]

If that works for you John go for it. There are a number of ways to get the same results.

What Davy is leaving out of the photo is some 30 years experience.