The fixing of the plates TEGOPLUS® must take place in correspondence of the structures of each high ridge, with screws 6,3 x 80 mm, fitted with sealing provided by dott.Gallina. The use of other types of fasteners may alter the resistance of the sheets. For the fastening a pre-drilling is advisable, made with a metal tip with a diameter greater than 2 mm to that of the screw. The excessive tightening of the fasteners, preventing movement of the plates due to thermal expansion, may compromise the seal.