Hi, I just noticed that the cap of the water shut off valve of my toilet is not big enough to cover up the entire hole on the wall so there is a small gap on the wall. I suspect (and hope) the plumber probably drilled the hole too big when they installed the toilet (my place is 10 years old).

Could anyone let me know how I can cover up this crack/gap please? I've seen insects climbing in from this crack. The attached picture shows the crack circled in red.

Thanks a lot for your help.

Hi, I just noticed that the cap of the water shut off valve of my toilet is not big enough to cover up the entire hole on the wall so there is a small gap on the wall. I suspect (and hope) the plumber probably drilled the hole too big when they installed the toilet (my place is 10 years old).

Could anyone let me know how I can cover up this crack/gap please? I've seen insects climbing in from this crack. The attached picture shows the crack circled in red.

Thanks a lot for your help.

Your picture failed to come through. The "cap" is called a escutcheon plate.
If you wish to replace it they make a split chrome plate, (see image). You will have to take a pair of tin snips and cut the old one out.
If you have a gap simply fill the hole with spackle and paint. You may nor install your new plate.
If yousimply want to hide the gap with a oversized ploate,(see image) check them out at: http://www.plumbingworld.com/images/chrome-bell-escutcheon-flange.jpg
Be aware that to use this plate you'll have to remove the angle stop to do so.
I've given you two options. Your choice. Good luck, Tom

Thanks a lot Speedball1. Sorry about the picture. Don't think you need to see it but I've reattached it anyway.

I'd like to use speckle because I am not capable of replacing the cap myself. This may be a dumb question, but, if I use speckle, will I be able to remove the cap in the future if that becomes necessary? My understanding is the speckle will glue the cap to the wall for good but I am not sure if that's true.

Thanks again.