To equalize the shape and amount of snow blocks that slide down the roof, stabilize snow melting performance, and reduce snow melting energy.SOLUTION: In a snow-melting roof structure of a multi-story greenhouse where a roof film 34 is fastened by a film fastener 40, a heat transfer member 60 having good heat transfer performance is disposed on the roof top portion, roof end surface end portion, and roof rafter portion 30 parallel to the sliding direction. The heat transfer member 60 may be formed by thickening a film fastener 70 or by incorporating a heating element 82 in a film fastener 80.SELECTED DRAWING: Figure 7【課題】屋根を滑り落ちる雪塊の形状や量を均一化して、融雪性能を安定化させ、融雪エネルギーの削減を図る。【解決手段】屋根フィルム３４がフィルム留め金具４０により留められている連棟温室の融雪屋根構造において、屋根最上部と、屋根妻面端部と、滑り方向と平行な屋根垂木部分３０に伝熱性能が良い伝熱部材６０を配設する。前記伝熱部材６０は、フィルム留め金具７０を厚肉としたり、あるいは、フィルム留め金具８０に発熱体８２を内蔵させたものとすることができる。【選択図】図７
