PROBLEM TO BE SOLVED: To provide a structure of a rafter material, and a fitting structure of both the upper and lower films by use of the rafter material and a presser material in which the lower film is fixed by being sandwiched between an arcuate pipe material and the rafter material, and the upper film is fixed by being sandwiched between an upper end of the rafter material and the presser material so that strong tension is applied to both the upper and lower films by tightening force when both the upper and lower films are fixed to the arcuate pipe material or the rafter material.SOLUTION: A rafter material for multi-layered films of a pipe house is provided in which the rafter material 10 and a presser material 20 in a prescribed structure are tightened by a self-tapping screw s2 and are directly fitted to an arcuate pipe material p on a roof by a drilling screw s1, thereby respectively pressing downward a lower film f2 by an arcuate lower part of the rafter material 10 and an upper film f1 by right and left double wings of the presser material 20 to lay the films in a state where strong tension is applied so that a required heat insulation air layer is formed between the upper and lower films.SELECTED DRAWING: Figure 1-2【課題】円弧状パイプ材と垂木材の間に下側フィルムを挟んで固定し、垂木材の上端と押さえ材との間に上側フィルムを挟んで固定し、上下両フィルムを円弧状パイプ材又は垂木材に固定するときのその締め付け力で上下両フィルムに強い張力が負荷されるように、垂木材の構造、及び当該垂木材と押さえ材による上下両フィルムの取付構造を提供する。【解決手段】所定構造の垂木材１０及び押さえ材２０をタッピングネジｓ２で締め付けてこれらを屋根の円弧状パイプ材ｐにドリルネジｓ１で直接取り付け、これによって垂木材１０の円弧状下部と押さえ材２０の左右両翼で下側フィルムｆ２と上側フィルムｆ１をそれぞれ押し下げて、強い張力を負荷した状態で敷設し、これによって上下両フィルム間に所要の断熱空気層を形成する。【選択図】図１－２
