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Posted by ecarecar on December 12, 2006, 3:59 pm
Good idea! I should have thought of it considering I recently re-hung
the very long eves trough by taking out the nails and re-installing it
with screws. They worked much better than the long nails originally used.
Thanks very much for the details. I wouldn't have known about that.
Dan Deckert wrote:
show/hide quoted text
>Basically, 2 economically viable choices.
>1. Replace the nails that are loose/suspect to leaks with modern day screws
>with neoprene washer heads.
> "On the assumption the washer heads would cover the nail holes and
>properly seal."
> http://www.atlasfasteners.com/woodmetal.htm
>2. Replace the loose/suspect nails and replace with an appropriate sized
>screw without the neoprene washer heads
> and use a polyurethane-based, elastomeric sealant as a cover over the
>screw head.
>http://www.sikaconstruction.com/con/con-prod-app-bs.htm
>I'd seriously refrain from trying to redrive the existing nails and caulking
>them over as they'll never retain any cohesion with the wood. I'd highly
>suspect these same nails have a lead washer-head under them. Should you
>choose to use neoprene washer heads, they can be installed with a variable
>speed 3/8" drill and a magnetic nut driver. Use caution when installing
>these types of screws. The washer head is designed to be """snugged down""",
>not squashed!
>Dan
>
>>I have a 30-year-old pole type barn. The roof is leaking in spots.
>>I am very sure that the problem is that the nails holding the metal
>>sheeting on the roof have worked loose over the years.
>>What is the best way to deal with this problem?
>>
>
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> I am very sure that the problem is that the nails holding the metal
> sheeting on the roof have worked loose over the years.
> What is the best way to deal with this problem?