Roof vent flashing

> My roof was gone over about ten years ago. The roofer install new
> roof vent flashings. There are four of them. Ten years later all
> rubber part of the flashing cracked and deteriorated. I believe the
> old ones the roofer removed were good and has lasted about 25 years.
>
> They don't make things like they used to?
>

> I know it will last only ten more years. Is there anything I can do
> to prolong the life?

<http://www.303products.com/shop303/index.cfm/category/65/303-aerospace-protectant.cfm>

> yaofeng wrote:

> > My roof was gone over about ten years ago. =A0The roofer install new
> > roof vent flashings. =A0There are four of them. =A0Ten years later all
> > rubber part of the flashing cracked and deteriorated. =A0I believe the
> > old ones the roofer removed were good and has lasted about 25 years.
> > They don't make things like they used to?

> ...

> > I know it will last only ten more years. =A0Is there anything I can do
> > to prolong the life?

> Supposition would be one of two things--either the originals were a
> different material or perhaps EPA has had an effect on rubber products
> similar to paint, etc., that restrictions on outgassing and/or
> manufacturing processes makes them more susceptible to uv than previously=

> I'd guess only thing that might help would be a good uv protectant--this
> stuff is supposed to be good; there are others as well, of course --
> <http://www.303products.com/shop303/index.cfm/category/65/303-aerospac...=
> --

> My roof was gone over about ten years ago. The roofer install new
> roof vent flashings. There are four of them. Ten years later all
> rubber part of the flashing cracked and deteriorated. I believe the
> old ones the roofer removed were good and has lasted about 25 years.
> They don't make things like they used to?
> I went to Home Depot the other day. Bought four replacement roof vent
> flashings. They were from the same manufacturer, Oatley. Rather than
> replacing the flashing assembly. I cut away the deteriorated rubber
> leaving a rubber ring where the edge was clamped to the aluminum base
> intact. Then I pried away the aluminum at the base of the rubber on
> the new flashing assembly. Slipped them on to the vent pipe and
> snuggly fitted the rubber cap onto the old one and caulked around the
> edges with roof sealant.
> I know it will last only ten more years. Is there anything I can do
> to prolong the life?