Poly is for reainwater guttening explain the reasons? Why guttening made from iron why polythene a better?

Question

Poly there is used for reainwater guttening. Explain the reasons for it's use? Some olther guttening may be made from iron explain why polythene would be a better choice?

Answer 1

The 'poly' you are referring to is polyvinyl chloride. It has a number of advantages over iron.
1. Iron corrodes (rusts) and requires painting every few years to protect it.
2. Iron is heavy and so heavier stronger brackets and support is needed and will be physically more difficult to put up.
3. Polyvinyl chlride is much easier to cut to any required length.
3. Polyvinyl chloride is cheaper than cast iron

Answer 2

Iron rusts. Polythene wouldn't.

Around here (California), the guttering is made from steel which is galvanized or painted or both. Polythene would not be used because the UV from the sun would destroy it in a couple of years.

Answer 3

Polythene means many (poly) ethene molecules joined together in a long chain, Its light, easily moulded and doesn't rust. Yes, Iron zinc and even wooden ones were once used but plastic gutters are far superior. They don't need painting either - especially if you get black ones.

Answer 4

Our old Victorian house had Iron guttering, the only downside was you had to paint it every three or four years. It was over 100 years old and in perfect condition. The polyurethane guttering on our new house is about 10 years old, they need to be cleaned every year to keep them white and the joints break easily - the downpipes just seem to drop off for no reason, they also look ugly! I don't think plastic is better, sorry!

Answer 5

Plastic guttering is durable, easy to cut. easy to join and does not corrode. Plus it's so much cheaper.

Answer 6

briefly - iron will react with air and water to form rust- so the polymer option is better