Gunite Pool Repair

[ChamboEng]

Client needs to replace a pipe within a gunite pool. He's concerned that during the removal of the existing pipe, mostly likely by chiseling, he's going cause damage to the surrounding gunite. Even though gunite is a cementitious material, I don't think that it will hold up similar like concrete would...

Are there certain repair techniques that need to be implemented to mitigate additional damage to the gunite shell?

Thanks.

 

[Ingenuity]

Maybe use a smaller percussion chipping hammer like an electric 10-lb'er?

Gunite (pneumatically applied concrete = shotcrete) is usually pretty dense stuff if applied correctly, so the usual concrete repair 'rules' would apply, IMO.

 

[oldestguy]

I'd core a hole with a diamond bit core barrel. The annuylar space later can be caulked.

 

[Ron]

Agree with OG. Coring bit can be about the same size as the pipe O.D., thus minimal sealing issue and no damage to Gunite. Ingenuity is correct....Gunite is a proprietary form of shotcrete. Concrete repair methods, if necessary, apply.