Hi,
I have a closed in porch where the window sills have rotted out were the sides meet the front, mitred corner. Seems the rain is getting in through the mitre joint. How can I protect the new sill from suffering the same fate. Maybe some kind of cap or flashing?
Mike
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Yup.
F
There he goes—one of God's own prototypes—a high powered mutant of some kind never even considered for mass production. Too weird to live and too rare to die.
—Hunter S. Thompson
from Fear And Loathing In Las Vegas
I'm having a hard time picturing a sill with a mitred corner
maybe what you have is a picture framed casing on the exterior and the bottom piece of this is what you are referring to as the sill?
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Cellular PVC product. HD has a line called NeverRot. You can try to replace each affected piece, but I usually scrap all exterior casing and sill on the affected window and replace them all, as the old and new the profiles might not match exactly. I assume you are referring to the bottom part of the assembly, which is the sill.
As Pif said, it sounds as though you have a mitered picture-framed casing, and the lower piece is rotting, which is one reason you rarely see that detail outside the protection of the interior of the house. Doesn't shed water well.
Good luck.
"I am the master of my fate, I am the captain of my soul." Invictus, by Henley.
Sorry for the mitre confusion. The porch is enclosed with windows both sides and front. What I should have said was the sill was cut with a 45 deg angle were the side window sill changes direction to the front window sill (L) with the rain getting in at that right angle cut. I hope this is a little clearer.
Mike
Well, if it rotted out in less than 20 years it wasn't caulked and painted right. I wonder if the problem wasn't so much the miter joint itself but rain running down the frame above that joint and behind the sill.
happy?
I ran into the same situation at a clients house. I replaced the sills (all of them) in the same manner, except that I covered those joints with galvanized. The same was done before I came along, to the exposed sill around the house, at the bottom of the stucco. Apparently when they did the house sill, the window sills weren't an issue.
The galvanized pieces ran from behind and under the casings, down the corner of the sills, and under, where I used a couple of galvanized finish nails to keep them from pulling up. I primed them with bonding metal primer and painted them along with the new sills.
I hope this is useful, or at least makes any sense. :o)
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Edited 3/10/2006 10:14 pm ET by Ted W.
Edited 3/10/2006 10:15 pm ET by Ted W.
Edited 3/10/2006 10:45 pm by Ted W.