| In
This Article:
Tar paper is laid over the
sheathing and shingles are nailed to each side of the saddle,
then the ridge, then woven into the shingles on the existing
roof. |
Related
Articles:
|
| Skill Level:
3 (Intermediate) |
Time Taken:
3 Hours |
By
Bruce W. Maki,
Editor
See Part 1 - Framing the roof saddle.
Installing The Shingles:
 |
First I removed the shingles beside the chimney.
What a mess, all that tar. |
 |
| Then I covered the new construction with a piece
of roofing felt (tar paper) |
 |
I pruned back the aluminum flashing and
installed a piece of "starter strip" shingle. |
 |
| Then I installed a full depth shingle and a
piece of step flashing. |
 |
Another row of shingles and another piece of
step flashing. It is very difficult for water to get behind
this flashing. |
 |
| The third row of shingles took me to the back
edge of the chimney. The step flashing had to be cut short to
fit under the old chimney counter-flashing. |
 |
I made a piece of flashing that went around the
corner. I used a concrete block to hold the flashing to the
chimney, after squirting some tar behind it. |
 |
| This will be a "woven" valley, meaning
that the shingles from different planes will over lap each
other. |
 |
The first shingle on the saddle has been
installed. |
 |
| The next shingle, from the main roof, over laps
the previous shingle. Also, a step flashing was installed next
to the chimney. |
 |
Another shingle added to the saddle. |
 |
| Another shingle added to the main roof. This
pattern of overlapping in the valley is called a
"woven" valley. |
 |
The top piece of step flashing had to be split
in order to fit. |
 |
| No more shingles needed on the saddle; the ridge
will be covered with single-tab ridge shingles. The next main
roof shingle was laid out to see how it would fit. |
After this, I spent some time shingling the other side of the
saddle. The sun went down during that time, so the remaining
photos were taken at night.
 |
The top shingle on the second side is visible.
It just covers the ridge. |
 |
| The next step was to place the first full
shingle that crosses over the ridge. |
 |
This "cross-over" shingle has to be
split, or it will not lay flat. A slit was cut part way
through, from the top. This slit runs in line with the
valley center-line. |
 |
| The next shingle in the row was cut to length. |
 |
The slit was filled with roofing tar. I
usually use a lot of roofing tar to fill any gaps around the
valley areas. I can't tell how well insulated and ventilated
this house is, so there could be a problem with ice dams
in the winter. When ice forms near the edge of the roof,
melting snow can find it's way under shingles, because it
can't escape downhill. |
I have seen enormous problems with ice dams forming around
chimneys, because some chimneys give off a lot of heat, especially
masonry chimneys with fireplaces or less-than-high-efficiency
furnaces.
Note: No further shingles can be installed until the ridge
is capped.
 |
The ridge is capped with single tab shingles,
cut from three-tab shingles. (I use tin snips.) The cap
shingles are installed from the chimney towards the main roof. |
 |
 |
The last cap shingle had to be split, so it
would lay against the old roof.
Note how the black tar strips almost line up with the other
shingles. The next row of shingles will cover this junction
nicely. |
From this point on, the task is a straightforward matter of
installing shingles to fill in the area where they were removed at
the beginning of this project.
 |
The next day I took some better pictures. The
shingles will lay more flatly to the roof after they go
through a warm summer. |
 |
Completing The Flashing:
 |
First I applied a bead of roofing tar way down
deep behind the flashing, being careful not to bend the metal
too much.
Then I used silicone caulking to seal the top of the step
flashing against the chimney. I would have used clear
silicone, but I had run out, so I used what I had, which was
black. The color didn't matter here because this area can only
be seen while standing on the roof.
|
View an article that shows how I remedied the flashing
on the sides of the chimney.
|
Tools
Used:
- Basic Carpentry Tools
- Pry Bars
- Tin Snips
|
Materials Used:
- Roofing Felt (Tar Paper)
- Shingles, 3-Tab
- Roofing Nails, 1¼"
- Roofing Tar
- Silicone
|
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