Thread: Natural stone separation from backer, repair?

I spend hours looking at all the different glues to fix a stone that broke a while back.

Ended up using this for several reasons.
-Strength
-Waterproof
-Adheres to damp surfaces (Its recommended to wet the stone when gluing)
-Fast curing - less than 30 minutes
-Expands slightly, filling any chips or small gaps.


Since then i have used it for a few damaged stones including a Coticule and gluing a wooden base to the back of a couple of jnats, all have turned out well

Originally Posted by Brighty83

I spend hours looking at all the different glues to fix a stone that broke a while back.

Ended up using this for several reasons.
-Strength
-Waterproof
-Adheres to damp surfaces (Its recommended to wet the stone when gluing)
-Fast curing - less than 30 minutes
-Expands slightly, filling any chips or small gaps.


Since then i have used it for a few damaged stones including a Coticule and gluing a wooden base to the back of a couple of jnats, all have turned out well

this is a kind of polyurethane adhesive like Gorilla Glue, Kleiberit Pur ADHESIVE 501, Titebond #2300 Polyurethane Glue, etc.
all of them contain isocyanates that are not safe for health.

Originally Posted by Nikolay

this is a kind of polyurethane adhesive like Gorilla Glue, Kleiberit Pur ADHESIVE 501, Titebond #2300 Polyurethane Glue, etc.
all of them contain isocyanates that are not safe for health.

Lucky i don't drink it then hehe

Below are a few repairs..

The stone cracked on the corner


This cracked in the middle


This was glued to wood so it wouldn't crack. You can see in this pic how well it expands, kinda like a foam when its not clamped.