Tom's Diary

Journaled for an hour or so this morning.

Measured shed for the  shed  roof replacement project.

Wrote up a project status sheet for the   shed roof replacement project.  Click   here   to see it.

Rounded up needed tools for the   shed roof replacement project    that I have here.  We’ll buy the rest of them over the weekend.

TV Viewing: two episodes of Dr. Phil, KDKA TV News, and The Young and the Restless.

Journaled for roughly an hour this evening, where I argued that we cannot choose to rid ourselves of our need for love.

Talked with [Emmy] a few times today on the phone.

Today was gray with occasional rain.  The sun only came out for a few brief periods.  Temperatures reached the mid 70s; typical late September weather. 

The grass is getting long again.  We’re coming due for another cutting. 

Tom

This is my first experience replacing a roof.  So I may be excessively meticulous in the documentation here.  But in so doing, I hope to avoid many errors that would not be fixable once the new roof is finished.  So, here I go…

Roof Description

I got started today on replacing the roof on our yellow shed in the back yard.  The first step was to measure the roof.  The roof is formed from four rectangles and two triangles.  Two of these rectangles drape down the sides (we’ll call these drapers) and the other two, closer to the horizontal, form the peak on the top (we’ll call these peakers).  There’s also an overhang that keeps rain off the front door (we’ll call these the umbrella triangles).  Now, with this terminology in place, here are the measurements I got:

• The drapers are each 148” X 34”. 
• At the bottom of each draper, there’s an additional row of shingles that serves as an ice guard.  This row is 148” X 5 and 1/4 inches.
• The peaker rectangles are 148” X 49”. 
• Each of the two umbrella triangles is 47” (base) X 50” X 16” (height).

Shingle Square Footage Calculation

Now, we must calculate the square footage of shingles needed so we know how much to buy at the store this weekend.  We’ll add up the square inches needed first, and then convert that result to square footage. 

1. There are two drapers. each one is 148” X 34”.  This gives us 5032 square inches. 
2. Multiply this by two (since there are two drapers), and you get 10064 square inches for both drapers.
3. There are two peakers, each one is 148 X 49.  This gives us 7252 square inches.
4. Multiply this by two (since there are two peakers), and you get 7252 X 2 = 14594 square inches for both peakers.
5. To get the area of the two umbrella triangles, multiply its base by one half of its height.  In this case, the base is 47” and the height is 16”.  Thus the area in square inches equals (1/2) X 16” X 47”, or 8” X 47”, which equals 376 square inches.  Since there are two of these umbrella triangles, we double the square footage of one (376 square inches) to get the total, which is 752 square inches.
6. Next, add in the area of the second row of shingles we’re installing at the bottom of the roof on each side. The area of one row is 148” X 5.25”, which equals 777 sqyare inches,  Add in an identical amount for the second row on the other side and you get: 777 square inches + 777 square inches, which equals 1554 square inches.
7. Finally, add all the values together from the various parts of the roof, and you get 10064 + 14594 + 752 + 1554, which equals 26964 square inches for the entire roof.
8. Convert the square inches total into square feet by dividing 26964 by 144, which equals 187.25 square feet.
9. Add in a fudge factor of, ten percent (per this roofing book I’ve been reading), and the total amount of shingles we need is 187.25 + 19 (roughly ten percent of 187.25), which equals total 206 square feet (seven bundles).

Materials Needed

Supplies needed include the following:

• A few pounds of 1.25” long roofing nails.  We decided not to use staples since the nails give a stronger hold.
• 192.25 square feet (two square) of dark green shingles to match the house roof.
• 192.25 square feet of Roofing paper.
• Staples for fastening roof vent once the new roof is in place.
• Utility knife blades.
• Tarp, to pile old shingles on so they don’t get into the yard, and to cover the roof peak with between the time we tear the old roof off, and the time that we finish installing the new shingles.
• 5 pounds of 1.25” hot galvanized roofing nails.  It takes five pounds of nails to fasten two square of shingles of the type we’re using.
• Roof vent.
• Roof cement, for edges.
• Chalk box.

Tools Needed

• Ruler.
• Chalkline.
• Crobar.
• Roofing spatula.
• Utility knife.

I hope to get to Lowe’s or Home Depot this weekend to pick up this stuff.  If the weather cooperates, I hope to have this job by the end of the weekend.

Project Task List

Originally, I planned on just shingling over the existing shingles.  However, my brother-in-law felt that it would be better to strip off the old ones, and upon further inspection of the existing shingles, I agree with him.  The old shingles crumble when handled.  So it’s probably a bad idea to lay a new roof over them.  So, they’ll be removed.  The task list for this project follows:

1. Read through a good roofing do-it-yourself guide.  DONE on 2009-10-04.
2. Take measurements.  DONE on 2009-09-25.
3. Calculate square footage of shingles needed based on above measurements.  The answer is 192.25 square feet.  DONE on 2009-09-25.
4. Round up required tools (most I should have already), and note the ones I must purchase.  DONE on 2009-09-25.
5. Make list of needed supplies.  DONE2009-09-26.
6. Go shopping for supplies and tools.  DONE on 2009-09-27.
7. Remove roof vent from the peak, being careful not to damage it; it will be reinstalled once the new roof is in place.  DONE on 2009-09-30.
8. Strip old shingles off of one half of the roof first.  DONE on 2009-09-30.
9. Remove any old shingles from the decking for this half.  DONE on 2009-09-30.
10. Inspect and replace any damaged underlayment plywood.  DONE on 2009-09-30.
11. Felt that (the first)  half.  DONE on 2009-09-30.
12. Strip old shingles off the other half of the roof.  DONE on 2009-09-30.
13. Remove any old staples from the decking for this half.  DONE on 2009-09-30.
14. Inspect and replace any damaged underlayment plywood.  DONE on 2009-09-30.
15. Felt that second half.  DONE on 2009-09-30.
16. Per Richard’s suggestion, add more staples to better secure the edges of the felt, to keep wind-driven rain from getting underneath it.  DONE on 2009-10-04.
17. Pick up shingles when the arrive at Lowe’s (on or around October 19th).  DONE on 2009-10-08.
18. Purchase a new roof vent.  Use the roll style that can be shingled over.  DONE on 2009-10-08.
19. Pound any staples applied to the new felt.  Some are protruding too far.  DONE on 2009-10-11.
20. Install row of shingles for ice guard.  DONE on 2009-10-11.
21. Install all shingles on first side.  DONE on 2009-10-13.
22. Install shingles on the other side.   DONE on 2009-10-21.
23. Install shingles on exposed area of the ridge.  DONE on 2009-10-21.
24. Cut out the roofing paper over the roof vent opening.   DONE on 2009-10-20.
25. Apply cap shingles to all areas of the ridge that will not covered by the ridge vent.  DONE on 2009-10-22.
26. Get another piece of ridge vent and a joiner piece (that binds the two pieces together and provides a water tight seal between them).  The piece we have is a foot short.  So we’ll just add on to it.  DONE on 2009-10-25.
27. Then, immediately install the new roof vent   DONE on 2009-10-25.
28. Check roof for leaks in the next drenching rain.  No leaks.  It’s bone dry inside the shed.  DONE on the morning of 2009-10-24.
29. Perform final trimming of shingles hanging over drip edges.  DONE on 2009-10-25.
30. Seal  edges and any exposed nails with roof cement.
31. Perform final cleanup.  IN PROGRESS.

 

Project Costs

• $23.32: Felt
• $245.82: Shingles
• $35.28: Ridge vent
• $5.65: Ridge vent ends and joiners
• $6.32: Roofing cement
• $10.60: Nails, 1.25 inch roofing, 5 pounds
• $0.82: Nail apron
• $31.77: Electric Stapler
• $6.30: Staples
• $4.20: Utility knife blades
• $8.99: Chalk line
• Cleanup

 Total costs: $379.07

Tom

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