Friday, 9 February 2018
Friday, 2 February 2018
Roof Ridge Cap Finished
A
few smaller jobs have been completed since the big roof finish, not
as exciting but still very necessary and important. The insulation
was taped together on the inside, so that each section is joined
without gaps to let the heat in. Surprisingly a very large amount of
heat was sneaking through where the insulation was joined, even
though there was a 100mm overlap. The special insulation tape does a
fantastic job of cutting most of this heat out. This job involved
climbing up a ladder dozens of times to reach the many joins, with
about 8 pieces of insulation on each side and 5 lengths for each join
to fit inbetween the roof purlins.
Next
we installed some bushfire mesh underneath the ridge cap, wedged
between the roof sheets and the insulation underneath it. You can't really see it in this photo, but you can see some of the insulation taping.
The installation of the mesh means
that we are fulfilling the bushfire regulations by not having any
gaps smaller than 2mm which may allow the entrance of embers in the
event of a bushfire.
Then
we installed the ridge cap on the roof. First lengths of insulation
were taped to the ridge cap, and the roof was swept clean.
Then the ridge cap was screwed to the
roof. There were two lengths of ridge cap, each 5.5 metres long.
With roof length of 10 metres and an overhang of about 35mm on each end, that gives plenty of overlap
in the middle. After the screws were done, they were all covered in silicone to ensure waterproofing.
I
also finished the screws on the decking. We had bought some screws
from the store which is 1 ½ hours drive away, but it turned out that
either they didn’t give me the 140 screws which I asked for, or
that despite my many calculations and recounts, 140 still wasn’t
enough. So I went back to the store and bought a bunch more, but when
I checked them, it turned out that they had sold me the wrong screws
– they were too short.
So third trip to buy screws for the decking
WHICH SHOULD HAVE BEEN SUPPLIED BY THE KIT HOME COMPANY IN THE FIRST PLACE,
we are advised that we have been given the wrong screws from the kit
home company all along. We were shown a pack of the same kind of
screws which says on the back ‘Not Recommended for Fixing Wood
Decking to Metal Joists’. Which is exactly what we are using it
for. Apparently because of the way that wood and metal expand and
contract at different rates with change of temperature, that creates
a tendency for the screws to shear and break. It turns out that the
correct type of screws are only available in very large packs which
cost hundreds of dollars, so we figured that we may as well finish
the job with the same screws we have been using all along.
Next
step is to put the windows and walls on. It has been raining for the
last week, so the country lore that the rainy season starts on
Australia Day might be true.
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