Bullnose. MAstic or Thinset.

Xchair · 03-27-2011, 01:46 PM

I have just had a tile floor installed in my hallways, entry, living room and dining room. I had all the baseboards removed from the drywall before installation. Now I'm going to install bullnose all around. I'm not sure if I should use mastic or thinset and this is the reason why.

When the base boards were removed much of the paper backing to the drywall went with it and I'm concerned that the moisture in the thinset will seep into the exposed drywall material.

What are the disadvantages of using mastic over thinset if any.

JazMan · 03-27-2011, 05:29 PM

Use a modified thin set. It'll say modified or polymer modified or something like that. It's very common available every where. Be sure to leave the expansion space between the tiles and wall open.

Jaz

Xchair · 03-27-2011, 05:33 PM

What do you mean by "expansion space"? Placing a grout spacer under the bullnose?

**oh'mike** · 03-27-2011, 05:57 PM

Are you talking about using bull nose as a base molding?

If so, Jazzes suggested setting material (modified thin set) is good.

If the area is a dry area---tile mastic should also be acceptable.---Mike---

Xchair · 03-27-2011, 06:07 PM

The tile floor is already down. The bullnose will sit on top of the floor as a base molding. Are there any disadvantages to using tile mastic?

**oh'mike** · 03-27-2011, 06:48 PM

No disadvantage---go for it!!

handy andy · 03-27-2011, 08:14 PM

I believe the expansion space Jasman refers to is the space between your bullnose and the floor tile. Do not grout this space. Use a caulk. Preferrably the same color as your grout. If you grout this joint, it will very likely crack as there is almost always some movement between walls and the floor. Caulking has enough give to allow some movement without cracking!

Xchair · 03-27-2011, 08:50 PM

Thanks for the caulking clarification and all the helpful comments!

03-27-2011, 01:46 PM	#1
Xchair Newbie Join Date: Mar 2011 Location: Goodyear Arizona. Posts: 4	Bullnose. MAstic or Thinset. I have just had a tile floor installed in my hallways, entry, living room and dining room. I had all the baseboards removed from the drywall before installation. Now I'm going to install bullnose all around. I'm not sure if I should use mastic or thinset and this is the reason why. When the base boards were removed much of the paper backing to the drywall went with it and I'm concerned that the moisture in the thinset will seep into the exposed drywall material. What are the disadvantages of using mastic over thinset if any.

03-27-2011, 05:29 PM	#2
JazMan Tileguy Join Date: Feb 2007 Location: Troy, Michigan Posts: 3,287	Bullnose. MAstic or Thinset. Use a modified thin set. It'll say modified or polymer modified or something like that. It's very common available every where. Be sure to leave the expansion space between the tiles and wall open. Jaz __________________ Tile 4 You LLC Troy, MI KERDI Shower Specialist ... DITRA Installs ... Product-Method suitability consultation. I have NEVER made a mistake, I thought I did once...........but I was wrong! - PRODUCTS ADVERTISED WITHIN MY POST ARE NOT ENDORSED BY ME!

03-27-2011, 05:33 PM	#3
Xchair Newbie Join Date: Mar 2011 Location: Goodyear Arizona. Posts: 4	Bullnose. MAstic or Thinset. What do you mean by "expansion space"? Placing a grout spacer under the bullnose?

03-27-2011, 05:57 PM	#4
oh'mike Super Moderator Join Date: Sep 2009 Location: Kane county,Illinois Posts: 16,779	Bullnose. MAstic or Thinset. Are you talking about using bull nose as a base molding? If so, Jazzes suggested setting material (modified thin set) is good. If the area is a dry area---tile mastic should also be acceptable.---Mike--- __________________ New members: Adding your location to your profile helps in many ways.--M--

03-27-2011, 06:07 PM	#5
Xchair Newbie Join Date: Mar 2011 Location: Goodyear Arizona. Posts: 4	Bullnose. MAstic or Thinset. The tile floor is already down. The bullnose will sit on top of the floor as a base molding. Are there any disadvantages to using tile mastic?

Bullnose. MAstic or Thinset.