Tips on sealing screws into outside paneling

3oaks wrote:

LarryJM wrote:

IMO that is the best and it's important to basically "entomb" the entire head of the screw or over time rust will work it's way around the head and down thru the screw threads causing a leak.

Larry

I've seen that happen before. That's why I use stainless steel hardware, not just shiny chrome plated carbon steel screws. Boating supply and accessory outlets are a very good source of all kinds of stainless steel hardware. More expensive but worth the extra cost.

I agree that SS screws are the best, but with the number of exterior screws a more cost effective alternative is something to consider. I guess the biggest point is the typical, fill the hole with "stuff" and then reinsert the screw is not going to give you the really long term reliability that a lot think.

These "wicking screws" along with the slow leaks that are almost guaranteed to develop in the four corners on most roofs due to the water ponding caused by the end cap roof seam and end side molding that runs up onto the roof are almost impossible to detect until the damage is so major.

Almost ALL CAULKING with the exception of some of the 3M Marine "Adhesives/sealants" are not designed as "PRIMARY" or "SUBMERSIBLE" capable and need to be used with those limitations understood. That is why Eternabond and 3M 4000UV series products are all I use on the exterior of my TT now.

Larry