I've learned this non sense from the pros that do the job for a living on rv another website. (rv brand website) Those pros recommended using sealants made for rvs.
Actually silicone residue is a major problem depending on type of silicone and how its blended.
Silicone comes in acetoxy or a neutral cure form.
Acetoxy can leave a acetic acid residue which can cause bonding issues when used on certain materials. Its a fast curing product and smells like vinegar.
The neutral cure silicone leave no residue and has no odor and bonds well with different materials ...but does take longer to cure.
Other RV related sealants can have there own non silicone/siliconized blends so long term performance may vary.
So yeah that tube of 100 percent silicone from Lowes that smells like vinegar isn't the best idea for a rv sealing or resealing job.
