September 2008                                       Click on (most) images for a larger view.


Took a little break during the work day to harvest some things out of the garden.  Beets, turnips, broccoli, lettuce, and potatoes!  All this planted and grew in our dirt pile left over from excavating!  Imagine what all we'll be able to plant when we have a real back yard to landscape and create gardens and pathways and a new workshop and greenhouse and....  ooops... better keep my focus on the work at hand!....

Finally some good weather to work on the roof sandwich....

 
setting the jig to trim side overhang and there it goes! assembly of side stand-offs... as seen from lower edge of roof
 
The east and west walls each have a 2ft overhang that is not insulated, therefore we have to build it to the same thickness as the interior roof which has 2ins of reflective foam board insulation.
pre-drilled for fascia fasteners... caulking fasteners... fascia in place, will stain again...
The north and south wall each have a 3ft overhang that is not insulated, therefore, as above, we have to build it to the same thickness as the interior roof which has 2ins of reflective foam board insulation.
lower (north) envelope extension upper (south) envelope extension lower roof 12"centre "I-beams"

Sunday September 28th...  It's been 3 weeks since we last posted something! 
We've been busy at it - too tired at the end of the day to write and resize and upload pictures (we were going to tonight and found out that we've hit the storage limit on our web server for putting up any more images.  We realize now that we don't need such large images displayed when you click on the small ones.  Sooo... do we go back and resize all the pics from the beginning??? or buy more web space?????  Gosh... just one more detail and decision to make!!!

I feel inundated at times with all the details and decisions.  Some days that's all we do!  I just want to build it and move in!  Then I stop, take a breath, and realize how much we are learning/experiencing and how far we've come and I am amazed and thankful.  Anyhoo... so we did get the upper roof ready for the metal and did a mighty fine job at that!!!  It's gorgeous - wait til you see the pictures - some day.  Then we've been working on the balcony insulation (because it is a roof to the guestroom below) and found that we had to work on closing in the east wall because it wraps up into the balcony.  So we got the lower third of the east wall completed.  But before we finish the balcony floor we have to close in the south wall because it works in with the sandwich of the balcony.  One thing leads to or is intricate in another!  Our brains hurt at the end of the day!  ;-))

And speaking of the end of the day - it's Fall now and the days get darker and end earlier than we would like.  We were used to working until 10pm and now we're only working until 7:30!  So we come inside, grab a light bit and work on more details etc., on the computer.  Right now we are working on our materials list for the roofing order.  We'll send it to the roofing company for them to review and see if we've missed any materials.  Then we'll send it out to three companies to get a quote to buy it.  It will take a week to get the materials so in the meantime we will do the lower roof insulation sandwich...


Finally, we got a chance to put up some more pictures. We must admit that our interest in the two elections has diverted our attention a little at the end of the date. Instead of updating our site we sometimes spend a little time watching debates or video clips on line. 
Laura is placing the overhang stand-off beams  while I keep assembling more to keep up with her. Once they are all in place, they clearly show the dividing line between inside space and the roof overhangs.
Safety first; there is always a safety line handy to attach our harness when we are the least bit uncomfortable. The strapping is placed inside the perimeter dam butting up against the P-2000 barrier that lines up exactly with the vertical P-2000 envelope below the roof decking. The strapping will insure an air gap to maximize the reflective properties of the P-2000
Plumbing vents are positioned and clamped into place from below. Since they penetrate the envelope they receive extra care to prevent warm moist air from condensing around them. These details are critical to insure the integrity of the exterior envelope.
blocks to secure roof decking joints. Another length of bug-screen placed between stand-off beams and fascia board Our first bundle of 2" P-2000 is lifted onto the roof and unpacked. We place our first sheet of P-2000 on top of the strapping inside the dam.
We cut and fit the second panel. We caulk the dam/ panel interface and tape the seams before we fasten the 2nd layer of strapping. this strapping is required to allow vertical air flow above the panels. This air flow transports the reflected summer heat out the ridge or peek vent.
The 4" screws penetrate through the sandwich into the bottom strapping and the roof decking. This is intended to squeeze the insulation and thereby sealing it around the screw as it compresses. Progress appears slow from the street as all this detail work results in very little visual changes for the passer by.
The manual crane is lifts more fascia that is cut and fitted to the eve. Bug screen covers the entry of roof venting air which travels between the sheathing and the panels to the peak.
sometimes we substitute tuck tape to save the reflective tape for places where a contiguous reflective surface is desired. OSB sheathing is fastened to the top layer of strapping with 1" galvanized nails taking care not to penetrate the P-2000. Expansion gaps are critical.
It's a balancing act to straddle the strapping to avoid breaking through the P-2000. The peak overhang does not have any insulation. Most of the sheathing is in place.
The peak fascia board is secured. A backing block prevents warping Leaving a note for the future. The final panels are custom fitted.
The sandwich is complete and all our meticulous detail is hidden. Sampson underlay is fitted around the vent stacks.
After it the underlay is secured its time to clean up and focus on other projects until the metal arrives. The balcony is the next priority but before we can complete the roof sandwich on the balcony we must close in the walls below.
The support strip for the sheathing is secured to the bottom plates and protected from the concrete with a sill gasket. Caulking holds the P-2000 panels until the OSB is secured.

 

The contiguous envelope is taking shape. P-2000 is fitted around windows. OSB is held on temporarily with three screws penetrating through the OSB and into the studs.
sheathing in place... window detail... envelope detail... lucky they are big windows...
another good size window... lower east wall almost done. up to the balcony now...  strapping.. over joists to lay P2000 on...
caulking to seal... more strapping before the plywood. envelope wraps down front... time to stop and watch the bees!
       
Go back to last month...    

Go to next month...

 
 
 
Footnote: The following summer we borrowed a heat sensor and took some readings on the south facing roof. Where the sandwich was insulated the metal roof was 146 degrees Fahrenheit while the roof decking underneath remained at an ambient temperature of 62 degrees. In comparison the part of the roof that was just vented and not insulated the decking temperature was 76 degrees.


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