Upside...1..One piece,
2..waterproof,
3..never needs painting,
4..never rot.
Downside, 1. Moisture condenses on the inside of top in Winter, then drips back down on the inner cover, and into the hive,
2..will deteriorate over time and become brittle,
3..tends to blow off in less wind than heavier wood/metal tops,
They are quite acceptable, but, I prefer wood and metal.
cchoganjr
2..waterproof,
3..never needs painting,
4..never rot.
Downside, 1. Moisture condenses on the inside of top in Winter, then drips back down on the inner cover, and into the hive,
2..will deteriorate over time and become brittle,
3..tends to blow off in less wind than heavier wood/metal tops,
They are quite acceptable, but, I prefer wood and metal.
cchoganjr