Missed the blog yesterday. Somehow it seems that nothing much happened, although I spent the whole of yesterday on the roof. In fact a lot has been completed. I soldered the cap on the valleys. A bit of a bodge up but it will work. Some slight concern over how the solder joints might hold over the full temperature range (that would be between -20 ad +40 ! ). Time will tell.
I spent the day tiling my way up the roof, cutting tiles at each end for the valley and the rake. I’m using Buster’s technique; Roughly cut to fit, then flick a chalk string line and make a final clean cut in situ.
It was difficult to make progress in the heat. It felt like India. The black tiles soak up the heat and bathe your roofer in a warm air layer as the sun beats down from above. I had to work in shifts separated by a long drink and a change of shirt. It would be easier to work in the evening, but for the load noise of the tile cutter.
Fifty-fifty solder begins to melt at 183°C (361°F), but it’s not fully melted until the temperature reaches 216°C (420°F). Between these two temperatures, …
Look up coefficient of linear expansion which for copper is about 0.0168mm/m/degC
To what temp range will the Jam be exposed ?