Time estimate to do 7.5 Sq garage roof?
Hi there! I’m a homeowner who is doing extensive renovation to a 50’s era So Cal home. So far I’ve taken the kitchen down to the studs and rebuilt it, replaced most old 2 wire romex with new 3 wire (and am actually grounding everything – yes I am following code), installed new doors/frames, new fans and ventalation… well, you get the idea.
Well, this house had an addition that changed a portion of the roof dramaticly, and now I have some rotted wood in the sheathing as well as a couple of dryrotted rafters in the center of one side of the span due to a very shallow 1:12 valley run.
I’ve been doing a ton of research, picked out materials (haven’t bought them yet) and now I need an idea of how long I should reasonable expect this project to take.
Here is what I plan on doing:
1- Remove 2 layers of old roof over garage, carefully remove portion of roof parallel to garage on house to install a better valley.
2- Remove all old 1×6 sheathing
3- Install radiant barrier 15/32 OSB, with peel&seal over the seams and under flashing areas (one water heat exhaust stack needed here)
4- Rebuild valley with bottom and edges peel&sealed
5- Install 2 layers of 30 weight felt over everything
6- Install 24″ metal in valley run
7- Install edge flashing
8- Install Shingles
I plan on tarping over the whole garage roof (4:12 slope)while I work in case of a surprise rain, but after that – how long can I reasonable expect this to take?
I know how to use a pnematic nailer, and other similar tools. I have experience in various carpentry and construction projects, I’ve just never done a roof before. What is the time range YOU think this might take?
Thanks for any input!
Replies
about two weeks
Well, that was longer than I was thinking! What parts do you think will take the longest?
45 minutes
Just an estimate, mind you.
Edited 1/28/2005 12:40 pm ET by TMO
Hmmm, never considered building a new roof in the driveway, chainsawing the old one off then craning the new one on top of the old walls. :)
Does the 45min assume the house is traveling closer to the speed of light relative to the rest of the neighborhood?
You almost made coffee shoot out my nose. OUCH!
A homeowner I worked for this summer decided to his garage roof. We helped him get the materials back in august. He is a pretty hard working guy so based on his performance I'd say 7 months(he hasn't got to it yet :0)
Seriously, If you grind at it and get some help from a strong back you should be able to get it done in 70 man hours or so.
Edited cause I just read your desire to remove old sheathing
Edited 1/28/2005 12:58 pm ET by TMO
Thanks! These are helping me get a rough timeline before going at this.Rebuilding my home in Cypress, CA
Also a CRX fanatic!
Cool first post; congratulations for breaking out of lurker status <g>.
It will be interesting to see what responces you get.
My first reflex answer is that you should plan on it taking twice as long as you expect, then add a bit for learning DIY OTJ.
The worst hiccup will be things that you don't have and/or can't get, 'cause you don't have one in the back of the truck, or back at the shop, from doing this before.
Sounds like an ambitious, but executable, sort of project. How about some "before" pictures?
Not knowing much aboout your work ethic, but taking for granted that you're competent and motivated...but adding in some slop time for you being incompetant and unmotivated...plus tossing in a little extra time for head-scratcher situations...as well as subtracting a little time for the realization that you've ripped the roof off your house and you'd better get it back on pronto...
A day for tear-off.
Three to four days for repair & resheathing.
A day to flash and felt (and probably get started on shingling).
Two to three days to shingle. You could do all 7.5 square in a day...but figure 3 sq a day for a newbie. A little slow on layout, starter courses, etc...but a coil nailer will speed things up considerably.
I didn't add any time for cleanup.
Depending on your stuation and days available to work, and assuming this is a gable roof, you might want to do one side of the roof at a time. Leave the front as is and tear off, repair, and reshingle the back of the house. Then move on to the front. This allows you to work out the kinks on the back so the front side gets your best work.
Nice post, by the way...good info with some background on your skills. Only thing better would have been to add a few pics of your roof.
Thanks for the back pats! I help moderate a car enthusiast forum, so I know how important it is to post all the info you know going in. I'll try to get some pics up - it's raining now so I may actually get a leak in action!
I know exactly what you mean about adding all that time for head scratching, missing the needed extra piece, new problems, waiting on bright people in a forum to get back to you when you are stuck. Been there many times. The last big project I did of similar scope was rebuilding my engine. Took me about a month, roughly to do the first time. Then on the final stage of assembly I found i had a stripped head bolt hole. GAAARRRR! Well, after I got another used block (was cheaper than repairing it), I tore down and rebuilt the other block in about 4 hours. 4 weeks to 4 hours - I like that learning curve!Rebuilding my home in Cypress, CA
Also a CRX fanatic!
working alone ,
I would figure this as a pretty straightforward easy 2 day job ( done the equivalent many times.
I WOULD be subbing out the cleanup however.
Since you mentioned planning on installing 2 layers of 30# felt----and since that is a particularly bad idea-------
I am guessing Mike Smiths guestimate of 2 weeks to be pretty close to the mark.
Best wishes, Stephen
BTW----- roughly
first day shingles and decking off by lunch. roof decked back in, drip edge, icegaurd, 1 layer of felt by about 5:00
2nd day------- shingle----done by lunch
Actually typically I would do 1 side from start to finish each day-----that way I wouldn't care if it rained over night---or for 3 days in a row.
that's why i'd sub the job to you... and we'd both make money.. hah,hah, hahMike Smith Rhode Island : Design / Build / Repair / Restore
ya mike,
but ONE of us would be more tired than the other.
LOL
Stephen
you're right , i get awful tired playing golf while you work...
i'd probably have to take a napMike Smith Rhode Island : Design / Build / Repair / Restore
Don't forget how tiring all those trips to the bank can be
Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!
"Since you mentioned planning on installing 2 layers of 30# felt----and since that is a particularly bad idea-------"
Why do you say that having two layers of felt is bad?Rebuilding my home in Cypress, CA
Also a CRX fanatic!
Since no one asked yet, why are you stripping the 1x6, is it partially rotted?
I think he mentioned rot
Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!
Two py of felt is good, especially below a 4/12 pitch, but 30# is heavy, stiff, and thick. unless you lay it warm and stretch it tight, you will have wrinkles and puckers under your shingles. they will telegraph trough and even potentially create voids/air pockets that will make it hard to nail tjhe shingles down snug without poking hoopes in them.
Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!
To elaborate on Piffens remarks--------
most people would install 1 layer of 15#----that would be quite adequate.
Personally---I install 1 layer of 30#----It's easier for me personally to get 1 layer of 30# to lay flat----- AND it is covered in shingles the same day----not left exposed overnight.
Most of my roofers tell me they don't like the 30#---it's harder for THEM to get it to lay flat compared to the 15#-------------NO WAY they are ever gonna get 2 layers of 30# to lay flat.
THEN---let's consider your felt exposed to the weather for 2 weeks in rain,snow,sleet,hail, dew etc.-----2 layers of 30# is gonna be a mess.
One layer of 30# would be great----but you seem to be looking for something else.
Instead of 2 layers of 30#---which would be a medium sized mistake---but a mistake none the less---------------use 1 layer of Titanium UDL or Rooftop Gaurd II. Your material cost will be comparable---and your TIME savings will be significant. Wether it will be an improved product will be subject to debate.
Stephen
Where in Cypress? My town too!
If you plan on doing it all yourself, Mike Smith's estimate of 2 wks sounds about right. On the other hand, I've got a shingle crew (2 guys with a ground man/packy) that would probably have it done early on the second day.
Scissors cut paper. Rock breaks scissors. Paper wraps rock.
My roof repair from h*ll project just finished. Shingle crew took three guys 2 1/2 hrs to put in 6 sq, two valleys, tie in to old roofing on one end, and install 45 ft of ridge vent. It took three guys with a little help from me a week (roughly 100 mh)to tear off about a 16 x28 section down to ceiling joists, rerafter (with some serious correction to unlevel plates) plus resheathing (osb over 1x random width) a 28x 18 section.