Hey,
Is there a way to fix missing grout gaps like this? Or do I need a professional in? Floor under a cupboard
Hello @melrane
Thank you for sharing your question about your grout fill. Yes, you do have the option of getting a professional to regrout your floor gap. However, you can also explore the option of repairing it yourself. The old grout can be removed using a https://www.bunnings.com.au/qep-professional-grout-saw_p0393523 or use a flathead screwdriver to lift up the loose grout.
To fill the gap, I suggest using https://www.bunnings.com.au/sika-300ml-white-sikaseal-kitchen-and-bathroom-silicone-sealant_p1210308 . Sealing the gap with silicone means that it can accommodate movement and will not crack or fall apart when it occurs.
Here is a handy step-by-step guide: How To Silicone Seal A Bath (the techniques used are applicable to your project)
Please remember to wear personal protection such as gloves and goggles when working on your project.
If you need further assistance, please let us know.
Eric