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April 2009
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Roofing Repair Project Act 4

Now we have a clear field to access the damage and fix it. And here it is.
Exposed Water Damage

The water stain extends from the underside of the ductwork boot, and
runs downhill. Under harsh interrogation :), I discovered that the
previous owner had reroofed the house before my clients bought it.  The
absence of roof tar around the electric box, tells the tale of how
water got in. Because it was under the unit, he must have thought that
the AC unit would prevent water from getting in. Sigh…

Tech
Tip: If you have anything penetrating your roof you need to seal it.
Water is looking for an excuse to get into your house, damage your roof
and ceilings  and keep roofers employed.

So now we have a handle on the problem.
We need to remove and replace three pieces.

Having gotten the rotten plywood out of the way, this is what is underneath. The good news is that the plywood soaked up most of the water, leaving the insulation alone, and not requiring any ceiling repairs. The bad news is that water has bowed the tops of these trusses creating the valley we saw yesterday. We will fix this. The original decking was put down with 1 1/2” staples, which the water had rusted away. Plywood almost jumped off the roof.

Roof staples are code, but are not the way I would do it. Tract Home builders and roofers like them cause they are fast.
Roofdeck3
Here is the repair in progress. At the top of the photo is a 2×4 post, that is clamped to the deck to establish our horizontal elevation. I cut and installed short posts between the bottom and top of the truss over a wall, to ‘flatten’ the roof. I also sistered 2×4’s next to the existing roof truss members to strengthen and remove the bowing the water damage had caused. I used 3” deck screws to hold these all together.
Roofdeck4

I have two drills up here. One contains the pilot countersink bit, the other has a magnetic bit holder for driving the screws home.

Decking Done

Here is the finished decking.
Roofdeck5

I used 1 1/4” deck screws to hold these down. It is smooth, flat and doesn’t bounce like before. Tomorrow the roofers will put the shingles back, and Friday morning will have the AC unit back.

Meanwhile, at the other side of the house I am making a Laundry a useful and productive member of this house.

Roofing Repair Project Act 3

Having sorted out the patio, we move to the roof where we can see the damage. Here you can see where the water has bowed the top chords of the trusses and damaged the shingles. The black line is where we had a tarp in place to stop any more moisture getting in while we were scheduling the roofers and the AC folks.
Exwater3

The next stage of the repair is to remove the AC unit. First thing was to cut the power to the unit before Dave showed up. Dave arrived about an hour before the crane and did all the disconnection. The AC unit weighs about 500 pounds, is 14 feet in the air, and is sitting on a yet to be determined rotten roof.

Enter the Crane

This is the tool for the job of getting big heavy stuff moved around. Be nice to own one of these, but then I would have to get into the crane business to pay for its care and feeding.
Boomtruck

Take away

Monday, Monday, Monday!!
Away it goes. It took 10 minutes to set up the crane and 2 minutes to get the AC unit off the roof and on the ground. We took the stand with it so it will be easier to reset when the roof is done. Wave to the box, as it will be a couple of days before we see it again.
Roofacremove

Tear Off

The next step in the repair is to tear off the old shingles to the deck. We decided to remove the entire side from the ridge to the fascia. There are a couple of reasons for this. First, is the color matching problem. Roofing shingles are like any other fashion item. Styles and colors change. Not as often as your wardrobe, but it does change. The other color issue is fading. After a few years, the Arizona sun will beat the color out of anything.

Second, is having a clear field to access the damage and to see if there are any more areas that need attention. It also makes it easier for the roofers. I am all about easy.
I am a next guy. I think about what will make it easier for the next guy to do their job.
Folks appreciate it, the job goes much smoother, they will remember you, so the next time you call, it gets easier. It saves time and money.

Tuesday. The lads from Collum showed up, tore it off and were gone in 90 minutes.
Tearoff
All done, swept and trash removed. I really like these guys.
Tearoff2
Wednesday, I make repairs.