How to repair cracks on fibre cement vertical walls?

[Bel789]

My house is clad in fibre cement large flat sheets. A crack has developed on the surface that is irregular in shape and not on a join, nor is it straight. 

Until I can afford to reclad, I need to repair this, so it hopefully lasts 2-5 years. 

Any advice appreciated! Thanks.

[MitchellMc]

Hi @Bel789,

It would be beneficial for our members when offering advice if they could see the crack that you're dealing with. That will give us a better idea of repair options.

You might like to read this helpful guide: How to repair a rendered wall. Much the same techniques will be used with your sheet cladding. If the crack is not too severe, you'd likely be able to effectively fill and repair it with Sikaflex 11FC. Simply apply caulk it into and over the crack to seal it. This isn't a structural repair, so the crack might continue until the underlying issue is resolved.

Please let me know if you have any questions.

Mitchell