How to Install an Slab Isolation Joint so Badly it Fails

If your engineer said this:

Sealant required at isolation joint

And you got this:

Then you haven’t yet got this:

And you might get this:

Cracks in walls

So call this:


To get this:

Logo for Cornell Engineers Structural Engineers

And be this:


Because your Isolation Joint should look like this:

Picture of a correctly sealed Abelflex joint

Not like this!!!

Upsidedown Abelflex Joint


PS. Thanks to M.S. for the photos. Looks great now!!

Isolation joints installed badly can cause your house to crack. Just about every time an isolation joint is specified by an engineer it is specified correctly. SO builders and concreters are letting homeowners down.

Beware. Poorly installed isolation joints can cause a house to crack.