[Product Development Case] Examples and Achievements of Fasteners for Securing Roofing Materials

We would like to introduce examples of product development for screws and nails that we have proposed!

We would like to introduce a case study on the development of fasteners proposed by Yamaki Sangyo for securing cement flat roof materials to fire-resistant sheathing. The customer's request was to secure the roofing materials to the fire-resistant sheathing. Since the substrate is made of inorganic material rather than fibrous material, there was a significant issue with fasteners being prone to loosening, and there was concern that if the heads of the fasteners were not flat, the roofing materials would crack when walked on. Therefore, we proposed using screws instead of nails. Additionally, we used a special flexible material with grooves in the countersunk part of the screw to ensure that the screw heads would not protrude above the surface. Through these innovations, we were able to propose screws that meet the customer's requirements. 【Case Study】 ■ Issues - Fasteners are very prone to loosening when secured to inorganic substrates. - If the heads are not flat, roofing materials may crack when walked on. ■ Proposal - Use screws instead of nails. - Use a special flexible material with grooves in the countersunk part of the screw to ensure the screw heads are flush with the material. *For more details, please refer to the PDF document or feel free to contact us.

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