View Full Version : plastic water bottles make an insulated wall
09-04-2010, 11:55 PM
Is this clever or what?
Keeps them out of landfills. I use an empty pop bottle with the lid on, on my pond to mark the aerator. It floats, and has been in the sun for 10 years and is still floating. I would have though by now it would have cracked up and disintegrated, but maybe because nothing touches it, it stays solid. So that implies these walls would last for a while.
10-04-2010, 04:25 PM
I really dislike plastic in most situations, but that greenhouse from soft drink bottles is pretty damn cool.
I'm interested in the irrigators too. If the holes are made with a nail, then they will drain quite quickly. It's not like a system where they irrigate over time. Ground doesn't normally get water like that when it rains. Is there an advantage to it? Does it make the roots grow deeper? But more on one side??
11-04-2010, 09:26 PM
pebble, I know what you mean about plastic. And yet a greenhouse is going to have it in some form or other. I made a quick extension to mine last summer and bought some regular plastic to put over it, thinking I would get a couple years out of it, like I used to, until I could buy panels, but it just dissolved into bits after 6 months! I couldn't believe it. They don't make it the way they used to!
I've seen those types of irrigators for houseplants for a long time, and have had a couple on occasion. They do work well, just like drippers, which I have to use for at least 7 months of the year. The water will fan out from that point and go deep if enough is put in there, which is better for a perennial shrub or tree than just watering the top few inches. And it would make using grey water easier to deposit in just the right place. They also would be good spots to put compost tea.
12-04-2010, 04:13 PM
They could have designed them so that they would fill with water so that when it rains your greenhouse becomes a water tank while improving its thermal inertia. If the walls used this you could have a number of taps that could be turned to release the water or you could drip irrigate from it.
I have a similar idea for when I build my house. A number of walls are made with slim line water tanks inside them; this will keep the house cool in summer and warm in winter. Need to work out the benefit versus the extra cost of some bigger walls.
12-04-2010, 07:35 PM
Dreamie, and the algae factor :)
Although I've put horizontal gutters along the walls of my quonset hut style greenhouse, the water cascades off it and into the gutters, which are tipped to empty into large buckets. Even the condensation from fog can gather about 5 gallons a week, which in a drought helps a lot, especially in the greenhouse where the water stays in the soil longer.
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