Durs Ecoseal Screw®

Each assembly presents differences regarding the project and location of the work, making it necessary to have a unique specification for each case. 

SOLUTION: 

• Fixing screw: At least four fasteners per square meter (tile/shingle). Example: in a shed with a 1000m² roof, you will use 4000 Hard fasteners. 
• Side sewing/closing screw: A minimum of two fasteners per linear meter at the seam (tile/tile), at the roof and side closure. 

The problems of tip burning, can be related to the following situations: 

1. a) High rotation (tip firing): The high rotation of the equipment can cause high wear on the screw tip, due to the high friction index, thus generating the breakage of the cutting rod of the screw tip.
2. b) Screw performs two operations at the same time (tip breaking): If the screw is generating two operations at the same time (e.g.: drilling and fastening), the process may slow down the rotation of the screw at the moment of drilling, generating tip burn.
3. c) Extension too long: if the extension is too long, it may decrease the voltage of the screwdriver, generating a decrease in rotation, making the drilling process more difficult, and causing the tip to burn.
4. d) Boring holes outside the specification (tip flaring): The screw must pierce the specified range of each tip, according to the Hard Technical Bulletin. Drilling above this range causes the tip to burn out.

SOLUTION 

The possible solutions for tip burning are listed in the following alternatives: 

1. a) Use the appropriate equipment, according to Hard specification, of maximum rotation of 2500 RPM and 15Nm of wrench.
2. b) During the installation process, the screw should perform one operation at a time, such as:

1º) Drilling; 

2º) Laminate; 

3º) Screw; 

This prevents loss of speed during the process and, consequently, burning of the tip. 

1. c) Work with extensions of a maximum of 2 meters, preventing loss of tension.
2. d) Work according to the drilling range specified in the Hard’s Technical Report, checking the comparative between: TIP TYPE X PURLIN THICKNESS.

FM Approved is a certification granted by FM Approvals, an organization linked to FM Global, which has laboratories and teams of more than 1500 engineers able to test and reproduce the most difficult meteorological phenomena, recreating hurricane-force winds (258km/h) and testing the resistance of building materials, particularly roofing systems. The tests performed range from verifying the product design and/or specification to quality controls and installation. 

Some of the quality system requirements evaluated are: procedures for incoming inspection of raw materials and manufacturing quality control, engineering documentation, measurement systems, procedures for traceability, and anomaly handling. FM Approvals is recognized and respected around the world. FM Approved certification assures customers that a product or service has been rigorously tested and complies with the highest national and international standards. 

WHAT IS GLOBAL FM? 

Global FM is an insurance company specialized in the prevention of property claims through the use of loss prevention engineering. Founded in 1835, the organization has a strong presence in more than 130 countries, and a third of the companies in the American “Fortune 1000” are its customers. 

Currently the Durs Line and Metalic Line items are FM Approved certified, but other products are in the certification process. Check the table below to see which items have already been approved. 

All of our products follow the same quality control criteria, therefore all of Hard’s product line offers high durability and resistance. 

Melhor custo-benefício e garantia de que os produtos empregados na obra possuem padrões de qualidade, critérios de segurança e desempenhos técnicos aprovados no mundo todo. 

É indispensável, portanto, uma empresa observar, no momento das especificações dos projetos, que os custos com fixadores na obra são irrisórios se comparados aos prejuízos resultantes da danificação de máquinas, equipamentos, estoques de matérias-primas e produtos acabados, causados pelo arrancamento da cobertura em uma tempestade ou vendaval.