{"product_id":"siga-majcoat®-350-thermally-weldable-breathable-roof-underlay-1-5-x-33-4-m-50-m","title":"SIGA Majcoat® 350 Thermally Weldable Breathable Roof Underlay (1.5 x 33.4 m; 50 m²)","description":"\u003cp\u003e\u003cstrong\u003eSIGA Majcoat® 350\u003c\/strong\u003e is a \u003cstrong\u003ediffusion-open, thermally weldable roof underlay\u003c\/strong\u003e that withstands driving rain and protects roof structures from the outside on \u003cstrong\u003epitches from 5°\u003c\/strong\u003e and in extreme conditions. One roll is 1.5 x 33.4 m and covers 50 m².\u003c\/p\u003e\n\u003cp\u003eThe membrane has a \u003cstrong\u003e3-layer structure\u003c\/strong\u003e: a carrier fleece with a \u003cstrong\u003especial TPU coating on both sides\u003c\/strong\u003e. It is extremely sturdy, tearproof and waterproof, and the overlaps are \u003cstrong\u003ewelded with hot air\u003c\/strong\u003e instead of taped, which gives high security at all joints. A printed cutting and laying aid saves time on site.\u003c\/p\u003e\n\u003cp\u003eMajcoat® 350 can be used as a temporary roof covering for up to 16 weeks and meets ZVDH classes UDB-A and USB-A for underlay and sub-roof membranes.\u003c\/p\u003e\n\u003ch3\u003eRoof underlay main features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoll size: 1.5 x 33.4 m (50 m²)\u003c\/li\u003e\n\u003cli\u003eRoll weight: 19 kg\u003c\/li\u003e\n\u003cli\u003eStructure: 3 layers, carrier fleece with TPU coating on both sides\u003c\/li\u003e\n\u003cli\u003eJoints: thermally weldable (hot air)\u003c\/li\u003e\n\u003cli\u003eIntegrated adhesive strip (SOB): no\u003c\/li\u003e\n\u003cli\u003eThickness: 0.8 mm\u003c\/li\u003e\n\u003cli\u003eMass per area: 380 g\/m²\u003c\/li\u003e\n\u003cli\u003esd value: 0.3 m (EN ISO 12572)\u003c\/li\u003e\n\u003cli\u003eWater tightness: class W1 (EN 1928)\u003c\/li\u003e\n\u003cli\u003eMax. tensile force: 440 N\/50 mm lengthwise, 500 N\/50 mm crosswise\u003c\/li\u003e\n\u003cli\u003eNail tear resistance: 245 N lengthwise, 235 N crosswise\u003c\/li\u003e\n\u003cli\u003eTemperature resistance: -40 to +90 °C, short-term up to +120 °C\u003c\/li\u003e\n\u003cli\u003eFire class: E (EN 13501-1)\u003c\/li\u003e\n\u003cli\u003eZVDH class: UDB-A \/ USB-A\u003c\/li\u003e\n\u003cli\u003eTemporary roof covering: up to 16 weeks\u003c\/li\u003e\n\u003cli\u003eMinimum roof pitch: 5°\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eSIGA Majcoat® 350 is designed as an underlay and sub-roof membrane where a fully welded, highly secure roof layer is needed.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLow-pitch roofs from 5°\u003c\/li\u003e\n\u003cli\u003eRoofs exposed to extreme weather or long construction periods\u003c\/li\u003e\n\u003cli\u003eSub-roofs where all joints must be fully welded\u003c\/li\u003e\n\u003cli\u003ePrefabricated roof elements\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to install the roof underlay\u003c\/h3\u003e\n\u003cp\u003eInstall the membrane on the outside of the roof structure before the counter battens and battens.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eLay the first sheet with the printed side facing you.\u003c\/li\u003e\n\u003cli\u003eLay the second sheet with an overlap of about 10 cm, using the printed laying aid.\u003c\/li\u003e\n\u003cli\u003eMake a test weld before starting.\u003c\/li\u003e\n\u003cli\u003eWeld the overlaps with a hot-air welder at about 200 °C.\u003c\/li\u003e\n\u003cli\u003eFix the membrane above the welded joint.\u003c\/li\u003e\n\u003cli\u003eFix the counter battens directly to the load-bearing structure (e.g. rafters) with suitable screws, such as full-thread screws.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cul\u003e\n\u003cli\u003eTip: SIGA recommends nail sealing tape under the counter battens for effective weather protection.\u003c\/li\u003e\n\u003cli\u003eTip: for details and connections SIGA lists Wigluv® 100, 150 \u0026amp; 300 and nail sealing tape as related products.\u003c\/li\u003e\n\u003cli\u003eTip: Majcoat® 350 can also be prefabricated and delivered as finished roof sections.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Siga","offers":[{"title":"Default Title","offer_id":60499808026969,"sku":"SIGA-Majcoat-350-1.5m","price":447.13,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0923\/0997\/9481\/files\/SIGA_Majcoat_350_1.png?v=1794674769","url":"https:\/\/ottensten.lv\/en\/products\/siga-majcoat%c2%ae-350-thermally-weldable-breathable-roof-underlay-1-5-x-33-4-m-50-m","provider":"Ottensten","version":"1.0","type":"link"}