{"product_id":"sealmaster-gtr-intumescent-foam-glazing-tape","title":"Sealmaster GTR Intumescent Foam Glazing Tape","description":"\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eSealmaster GTR Intumescent Foam Glazing Tape\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is a flexible, highly compressible \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003efire-rated glazing tape\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e developed for use around fire-resistant glass in timber fire doors and glazed fire screens.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eUnlike conventional foam glazing tapes, GTR incorporates \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eintumescent technology\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. Under fire conditions, the material begins to expand at approximately \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e180°C\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, increasing to around \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e3–4 times its original volume\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e and forming a stable char to help maintain the integrity of the fire-resistant glazing system. The material has also been developed to resist thermal erosion at temperatures exceeding \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e900°C\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe tape combines this high-temperature performance with the practical benefits of a soft, flexible glazing tape. A \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003estrong self-adhesive backing\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e allows it to be quickly applied to glazing beads and around apertures, while the compressible foam accommodates the interface between the glass and glazing bead. It can easily be cut to size using scissors or a sharp knife, making installation straightforward even around accurately detailed glazing apertures.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eSealmaster GTR is suitable for use within a broad range of \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003efire-resistant glazing systems\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, including integrity, semi-insulating and insulating glass applications, subject to the requirements and evidence applicable to the complete glazing system.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eKey Features \u0026amp; Benefits\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eIntumescent fire glazing tape\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e for fire-resistant glass\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eSuitable for \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003etimber fire doors and glazed fire screens\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eDesigned particularly for \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e30- and 60-minute fire-resisting applications\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFlexible and highly compressible foam construction\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eLow-to-medium pressure intumescent action\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eExpands to approximately \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e3–4 times its original volume\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eIntumescent expansion begins at approximately \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e180°C\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eHigh resistance to thermal erosion, with char stability beyond \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e900°C\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eStrong \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eself-adhesive backing\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e for rapid installation\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEasy to cut and accurately fit around glazing beads\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eCan compress from \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e5 mm to approximately 2 mm\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAvailable in several widths for different glazing arrangements\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCERTIFIRE approved under Certificate CF5387\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, subject to the certified glazing system requirements\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eFire Performance \u0026amp; CERTIFIRE Approval\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe Sealmaster Intumescent Foam Glazing Tape is covered by \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eCERTIFIRE Certificate CF5387\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, which was reissued in May 2026 and is currently valid until \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e13 May 2031\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. The certification relates to the tape's contribution to the fire resistance of specified \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003etimber door leaves and timber glazed screens for 30- and 60-minute integrity\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, including insulation where applicable, in accordance with the conditions of the certificate.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe certified glazing arrangement includes more than the tape itself. Depending on the application, the complete system incorporates the approved fire-resistant glass, glazing beads, retaining method, aperture lining where required, and a suitable fire-resistant timber doorset or glazed-screen construction.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eFire performance should therefore always be considered as the performance of the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ecomplete tested or assessed glazing system\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, rather than of the glazing tape in isolation.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eSuitable Applications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eSealmaster GTR Intumescent Foam Glazing Tape is suitable for use in specified fire-resistant glazing applications including:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003eGlazed apertures within \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eFD30 timber fire doors\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eGlazed apertures within \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eFD60 timber fire doors\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFire-resistant timber glazed screens\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFire door vision panels\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFire-resistant glass and timber glazing bead systems\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCommercial and public buildings\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSchools and educational buildings\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHealthcare facilities\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHotels and residential developments\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOffices and commercial developments\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe exact glazing configuration, glass type, aperture size, bead specification and fixing arrangement should comply with the appropriate fire test, assessment or CERTIFIRE approval for the particular doorset or screen.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eSizes\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eSealmaster GTR is supplied in \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e20 metre rolls\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e in the following standard sizes:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003e10 mm × 5 mm × 20 m\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003e15 mm × 5 mm × 20 m\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003e20 mm × 5 mm × 20 m\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eOther widths may be available from the manufacturer on request. The nominal \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e5 mm thickness can be compressed to approximately 2 mm\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e where required by the glazing arrangement.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eTechnical Information\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eProduct:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e GTR Intumescent Foam Glazing Tape\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eManufacturer:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Sealmaster\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eProduct Type:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Intumescent fire glazing tape\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eColour:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Black\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eRoll Length:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 20 metres\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eStandard Widths:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 10 mm, 15 mm and 20 mm\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eThickness:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 5 mm\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eCompressed Thickness:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Approximately 2 mm\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eExpansion:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Approximately 3–4 times original volume\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eExpansion Begins:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Approximately 180°C\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eHigh-Temperature Stability:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Char stability beyond 900°C\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eFixing:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Self-adhesive\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eCertification:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e CERTIFIRE CF5387\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003ePrimary Applications:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Fire-resistant glazing in timber fire doors and glazed timber screens\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eEasy Installation\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe GTR Intumescent Foam Glazing Tape incorporates a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003estrong adhesive backing\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, allowing it to be applied directly to the glazing bead or other appropriate surface within the approved fire glazing system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eIts flexible foam construction makes the tape easy to handle and allows it to be cut accurately with scissors or a sharp knife. This is particularly beneficial when working around fire door vision panels and other glazing applications where accurate positioning is required.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eInstallation must follow the requirements of the relevant fire doorset, glazing system and current Sealmaster\/CERTIFIRE documentation.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eWhy Choose Sealmaster GTR Intumescent Glazing Tape?\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eFire-resistant glazing requires more than simply installing fire-rated glass. The glass, glazing beads, fixings, aperture construction and glazing seals must work together as an appropriately tested or assessed system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eSealmaster GTR Intumescent Foam Glazing Tape\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e combines the convenience and compressibility of a conventional foam glazing tape with the additional protection of a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003elow-pressure intumescent material\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. Its combination of easy installation, strong adhesive backing and certified fire-glazing applications makes it particularly suitable for professional fire door manufacturing, maintenance and fire-resistant glazing installations.\u003c\/span\u003e\u003c\/p\u003e","brand":"Roundtower Hardware","offers":[{"title":"10 mm × 5 mm × 20 m","offer_id":54133896249662,"sku":"GTR10X5FM","price":27.5,"currency_code":"EUR","in_stock":true},{"title":"15 mm × 5 mm × 20 m","offer_id":54133896282430,"sku":"GTR15X5FM","price":33.5,"currency_code":"EUR","in_stock":true},{"title":"20 mm × 5 mm × 20 m","offer_id":54133896315198,"sku":"GTR20X5FM","price":39.5,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/4422\/1502\/files\/SealmasterBlackGlazingTape-1-min-400x400.jpg?v=1786979368","url":"https:\/\/www.roundtowerhardware.com\/products\/sealmaster-gtr-intumescent-foam-glazing-tape","provider":"Roundtower Hardware","version":"1.0","type":"link"}