Plaster/Render Patching Over Interior Stone Wall - General DIY Discussions - DIY Chatroom Home Improvement Forum

Go Back   DIY Chatroom Home Improvement Forum > DIY Forum > General DIY Discussions


Thread Tools Display Modes
Old 10-21-2011, 06:41 PM   #1
Join Date: Oct 2011
Posts: 1
Rewards Points: 10

Plaster/Render patching over interior stone wall


I just recently bought an 1850's stone farmhouse. The interior walls have some repair work that is needed and I can't find anything that addresses my exact situation.

Here is an example of a patch that I want to fix. Some are bigger than this.
Plaster/Render patching over interior stone wall-stone.jpg

There is an old lime/clay/mud mortar used between the stones. Its is VERY crumbly. On top of that is old horse hair plaster. It appears as if it's one solid coat. The plaster is actually still pretty hard - it's the old mortar that seems to be leading to the plaster cracking and falling off.

In the photo, working from top down, is a stone, followed by a big piece of the old mortar, followed by a stone, a small gap and another stone. The discoloration is just some wetness, i tried to wet the stone to get a better picture

I'd like to patch these areas but just haven't had any luck.
First I used some gypsolite plaster as a basecoat because some of the holes are pretty deep. That didn't work very well because no bond was created. It pulled off of the old mortar very easily. It also pulled off of the old plaster easily. Not sure if the gypsolite is incompatible with the old horsehair - It definitely didn't mesh well with the old mortar.

Then I tried using Larsens Plaster Weld. I painted it over everything, old plaster & old mortar. The gypsolite bonded better to the old plaster but it still pulled away from the old mortar. I also ended up with a lot of cracks. I figure this is due to the old dry mortar sucking out the plaster moisture too quickly.

Has anyone out there had any experience with a repair like this?? Most of what I find is plaster/lath repair - occasionally plaster over brick but that's about it.

Any info would be greatly appreciated!


eric_o83 is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Wall - LOAD BEARING: How to Move? user49172 Building & Construction 6 05-19-2017 04:53 PM
Avoiding load on inner, exterior wall jklingel Building & Construction 2 06-04-2011 01:35 PM
Advice on retaining wall replacement (pics inside) eastie Building & Construction 0 04-05-2010 10:32 AM
Atlantic-need your opinion on markd's comments about my vapor barrier? yummy mummy Building & Construction 11 03-07-2007 09:47 AM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1