I have some serious rot damage on a 4x6 beam holding up my front
porch. I'm wondering how you guys would approach repairing it. It's
easier to see photos than describe so I've uploaded some photos here:
On Oct 31, 7:05 pm, firstname.lastname@example.org wrote:
Part of the problem is the way the beem protrudes beyound the facia.
This allows water to collect there on top of it. It looks like
temporary supports could be put in place while the damaged parts is
removed and replaced. After replacement I would apply flashing and
caulk to protect the facia and provide water drainage. Also consider
redesigning the way the beam extends beyound the facia. Cutting it at
a slope to help it shed water would help.
The pictures I saw show the damage but not the structure. What's the
load? Whatever is left w/ the repair has to have the same structural
integrity as the original (unless the beam is simply decorative, not
structural). Not enough info to tell.
Common sense yes, which is why I'm not just going to Bondo it and walk
away :). I might even hire (choke) a professional (cough) to do it, as
I'm just a handy homeowner type. But quite handy, with a lot of
experience. The beam is definitely structural - it supports the whole
porch roof. The part where the fascia crosses the beam is completely
gone, but even though the fascia is a 2x6, I'm assuming (and that's
why I'm asking you guys) that it's decorative, and the true support
for the roof is inside where I can't see it. (A theory supported by
the fact that the fascia is in 2 joined pieces.) If that is the case,
might I be able to pop off the fascia (easier said than done I'm sure,
as the flashing from the roof is nailed to it, but anyway), open up a
bit of the stucco soffit so I can see what's going on, and saw the
beam off at the vertical support. Then somehow fasten another foot-
long piece to the end of the beam, make a new piece of fascia, and
button it all back up again?
I know, if you can't see it you probably won't be able to tell me. If
there's an angle in a photo you need to see, I'll take it and upload
it. I'll probably go to a contractor to fix it, but if I can do it
myself then I can pay for another semester of my son's college ...
On Oct 31, 7:51 pm, email@example.com wrote:
From the photos, it looks like the various pieces are staying in place
even though there is daylight between the two main pieces. My
comments on the need for a gutter still stand. I would replace with
pressure treated wood for all involved replacements. Can you get
pressure treated 2x 6, 2x8, 2x10's etc? If you could do a lap joint
when you replace the bad wood, it would be a lot stronger than just
replacing the entire rotted out section with a butt joint onto the old/
new wood. I would have lots of support posts ready to hold everything
up before starting to do anything.
On Oct 31, 5:51 pm, firstname.lastname@example.org wrote:
The detail (close up) photos are fine...what we need is global shot to
Like the third photo but from further away. And some white space in
your post to make it easier to read.
Guessing from the existing data, I think what I'm seeing as the 2x6
member is not a fascia but an edge rafter? You mention it being in
two pieces...is that the "joint" above the beam? It appears to have
been notched at the time of construction. The notch provided a water
entrapment feature and thus a perfect place for rot to grow.
Dont saw off the beam! I would consider busting open the stucco
soffit and tapering the top surface of the beam to remove the
rot......maybe enough material can be removed to get down to sound
material within the limit of the 2x6. Then consider sistering in
piece to reinforce the 2x6 and bear on the sound beam material.
Whether this apporach will work depends on the geometry of the
rafter / beam interface and the extent of the rot. The bending load
in the beam at the rotted section is probably low and the beam
behavior is most likely shear dominated that the point so you might be
able to get away with a reduced beam depth at the rafter bearing
Remove are much rot as possible and treat with a anti-fungal when the
ant-fungal solvent carrier evaporates do an epoxy (not bondo) repair
www.abatron.com sells structure wood repair epoxy
I have some serious rot damage on a 4x6 beam holding up my
porch. I'm wondering how you guys would approach repairing
easier to see photos than describe so I've uploaded some
On Oct 31, 6:01 pm, email@example.com wrote:
I think you're quite capable of doing the repair. All of the load is
being supported by the beam, the only part that is not supported is
the fascia and *maybe* one joist (the outer most). Just cut off the
bad section back to good wood, attach anything to the end as it will
only be decorative after this, flash and you're done. Of course,
finish it out as you prefer, gutters, flashing, eopxy, whatever.
More photos below including a longer view so you know where the
damage . Sorry it's a little hard to see, but the red 2x6 is a fascia,
nailed to a rafter. The rafter sits on a partially rotted part of the
beam.I'm considering opening up the soffit enough to bolt or nail a 3-
or 4-foot sister rafter to the existing one, which would sit on good
wood. Then I can cut off the rot, replace the end of the beam with a
chunk of 4x6, probably just fix up the fascia with bondo, paint, re-
stucco, and flash. Anyone have a better idea? Is 3' long enough for a
sister or should I go 5'? 6'?
only be decorative after this, flash and you're done. <<<<<
& when he does this....what will support the outer most rafter that
abuts the back side of the fascia?
Removing load carry structure without replacing it or providing a
suitable alternative load path is never a good idea. Leaving the
edge rafter unsupported or supported by a scabbed on beam extension
will put the roof sheathing system in bending at the edge of the roof,
potentially creating a sagging roof edge in the future.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.