Just going to ad a couple of tips here as well, --when applying the contact adhesive, make sure the items
gluing are at least 30 minutes apart before attaching, this is a common problem, has to be touch dry
with your hand before applying.
And also, you can double up and apply cement twice,--especially on porous items--again -half hour apart.
Also there is a fabulous product called 303 Proctective for vinly--its the ultimate uv protection,
i first used this product ,when i lived in US about year 1999--2000-- .Made in Chicago IL.
sorry stopped using Armorall years ago.