When replacing a bath seal or putting a new seal on a fresh install always make sure area is clean from dirt of any kind the cleaner the area the better the seal.
When removing the old seal, you will need to ensure as much as humanly possible is removed from bath edge and wall
Using a window scraper along with a Stanley knife for this removal process gives the best results
Once all of the old seals and dirt have been removed you will need to clean down the area again and double check prepared area
If you have had any mould along bath seals once seal removed clean area with a mould cleaner to remove remaining
If there is any mould trapped in grout where seal makes contact with grout scrap it out and replace if tiles are not being re grouted at present
Prepare your silicone and silicone gun by cutting open tube adding nozzle and the cutting a 45degree angle at end of nozzle
Once area is clean and dry apply new seal
Here are a few pictures of things you will need to get the best out of you for the job.
For a clean neat finish no finger mess here
Filling knife for the small amount of grout if needed
To hold and apply silicone tube
My personal choice of silicone
Grout personal choice
Personal choice of mould wash
Silicone removal
Silicone removal
General Cleaning
Wipe away excess grout
For Rubbish