{"title":"Self Drilling Tek Roofing Screws with EPDM Washer","description":"\u003ch1\u003eRoofing Screws Guide – Sizes, Types \u0026amp; Applications\u003c\/h1\u003e\n\n\u003cp\u003eChoosing the correct roofing screws is essential for achieving a secure, weatherproof and long-lasting fixing. This guide explains the differences between common sizes, types and applications of roofing screws used for metal sheets, cladding and sandwich panels.\u003c\/p\u003e\n\n\u003ch2\u003eWhat Are Roofing Screws?\u003c\/h2\u003e\n\n\u003cp\u003eRoofing screws are self drilling fasteners designed for fixing metal sheets, cladding panels and roofing materials to steel or timber structures. They are typically supplied with a hex head and a bonded EPDM washer to create a watertight seal.\u003c\/p\u003e\n\n\u003cp\u003eBrowse all available \u003ca href=\"\/collections\/tek-roofing-screws\"\u003eroofing screws\u003c\/a\u003e in our store.\u003c\/p\u003e\n\n\u003ch2\u003eCommon Types of Roofing Screws\u003c\/h2\u003e\n\n\u003ch3\u003eSelf Drilling Tek Screws\u003c\/h3\u003e\n\u003cp\u003eTek screws feature a drilling tip that allows installation without pre-drilling. They are commonly used for metal-to-metal and metal-to-timber fixing.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/4-8x25mm-tek-roofing-screws-epdm\"\u003e4.8mm Tek Screws\u003c\/a\u003e – for light sheet metal and general fixing\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/5-5x50mm-tek-roofing-screws-epdm\"\u003e5.5mm Tek Screws\u003c\/a\u003e – for stronger fixing and thicker materials\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/6-3x63mm-tek-roofing-screws-epdm\"\u003e6.3mm Tek Screws\u003c\/a\u003e – for heavy-duty applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSandwich Panel Screws\u003c\/h3\u003e\n\u003cp\u003eThese screws are designed for fixing insulated sandwich panels to steel structures. They often feature extended lengths and high corrosion resistance coatings.\u003c\/p\u003e\n\n\u003cp\u003eSee our full range of \u003ca href=\"\/collections\/sandwich-panel-screws\"\u003esandwich panel screws\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eChoosing the Right Screw Size\u003c\/h2\u003e\n\n\u003cp\u003eThe correct screw length depends on the thickness of the material being fixed and the required penetration into the base structure.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eShort screws (16–25mm)\u003c\/strong\u003e – ideal for thin sheet metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedium screws (32–50mm)\u003c\/strong\u003e – suitable for standard roofing and cladding\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong screws (60mm+)\u003c\/strong\u003e – used for thicker panels and timber structures\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy EPDM Washers Are Important\u003c\/h2\u003e\n\n\u003cp\u003eEPDM washers provide a watertight seal between the screw and the surface. They prevent water ingress and protect against weather damage, making them essential for roofing applications.\u003c\/p\u003e\n\n\u003ch2\u003eCorrosion Resistance (C4 \u0026amp; C5)\u003c\/h2\u003e\n\n\u003cp\u003eRoofing screws are often rated for corrosion resistance:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eC4\u003c\/strong\u003e – suitable for industrial and coastal environments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eC5\u003c\/strong\u003e – suitable for highly aggressive environments such as marine areas\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCommon Applications\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eRoofing sheets and metal cladding\u003c\/li\u003e\n\u003cli\u003eGarages, sheds and workshops\u003c\/li\u003e\n\u003cli\u003eIndustrial buildings and warehouses\u003c\/li\u003e\n\u003cli\u003eFixing metal panels to timber or steel structures\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eQuick Tips\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eAlways match screw length to material thickness\u003c\/li\u003e\n\u003cli\u003eDo not overtighten – it can damage the washer\u003c\/li\u003e\n\u003cli\u003eUse the correct hex driver size\u003c\/li\u003e\n\u003cli\u003eEnsure proper alignment for a secure seal\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eExplore our full range of \u003ca href=\"\/collections\/tek-roofing-screws\"\u003eroofing screws and fixings\u003c\/a\u003e to find the right solution for your project.\u003c\/p\u003e","products":[],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0981\/1440\/4697\/collections\/Self_Drilling_Tek_Roofing_Screws_with_EPDM_Washer.png?v=1774534426","url":"https:\/\/zarvio.co.uk\/collections\/tek-roofing-screws.oembed","provider":"Zarvio","version":"1.0","type":"link"}