preparing to install subway tile backsplash

Old 10-16-18, 11:33 AM
Thread Starter
Join Date: Nov 2013
Location: usa
Posts: 1
Upvotes: 0
Received 0 Upvotes on 0 Posts
preparing to install subway tile backsplash

I'm getting ready to install subway tile backsplash in the kitchen but when i removed the old tin tiles, they have tile adhesive or mastic stuck to the wall. What is the best way to remove and or prepare the wall to add the new tiles?

Thanks !!
Old 10-16-18, 12:21 PM
Join Date: Mar 2009
Location: Northern Virginia
Posts: 3,914
Received 27 Upvotes on 21 Posts
Easiest thing to do is cut out all the sheetrock and replace it. Might as well run electrical for some undercabinet lighting while you have the wall open
Old 10-16-18, 01:11 PM
Forum Topic Moderator
Join Date: Mar 2005
Location: USA - N.E.Tn
Posts: 45,738
Received 863 Upvotes on 755 Posts
Have you tried scraping off the mastic? Often that will tear the drywall paper and if it does, those areas need to be coated with either Zinnser's Gardz or an oil base primer.

btw - welcome to the forums!
Old 10-17-18, 08:48 AM
Join Date: Oct 2018
Posts: 46
Upvotes: 0
Received 1 Upvote on 1 Post
I would use a 6 to 8 inch taping knife, like the one below.

Over the years, mine have become very sharp. They will readily and evenly knock off high spots of plaster, glue ect. The wall doesnt have to be completely smooth as the new mastic or thin set will be applied with a notched and will have a slight amount height to it. But it must not have high spots.

As said, if the drywall is torn, you must seal it with a quality NON latex primer.

Thread Tools
Search this Thread
Ask a Question
Question Title:
Your question will be posted in: