Marine application
Perimeter sealing closes the joint around an installed window, where it meets the surrounding structure and is exposed to weather, movement and cleaning. It is a separate step from structural window bonding, and the sealant is chosen for the joint rather than for the glass bond.
Window bonding holds the glazing in the assembly. Perimeter sealing closes the exposed joint around an installed window. A leaking window may need one or both interfaces investigated before a product is selected.
Bonding the glazing and sealing the window joint are different functions, but one product may serve both when the specific glazing material, joint design, exposure and preparation are appropriate. Iris customers use Bostik 70-08A for marine window sealing as well as glass bonding and glazing.
That does not make 70-08A right for every exterior perimeter joint, and acrylic (Plexiglass) or polycarbonate windows are reviewed separately. If you are unsure about your combination of materials, joint and exposure, send the details through Application Support.
Water around a window does not by itself identify a failed perimeter seal. Before resealing, the water path should be traced and the condition of the glazing bond checked — water can enter through the bond line, the frame, fasteners or the surrounding structure.
New perimeter sealant only addresses the perimeter joint. If the bond itself has failed, resealing the outside will not correct it. Tell us what you are seeing and Iris can help work out which interface needs attention before a product is chosen.
Related Bostik products
Suitability depends on the substrates and conditions of your application. If you are unsure, use Application Support.
Used by Iris customers for window sealing as well as glass bonding, where the glazing material, joint design, exposure and preparation suit it.
High-performance elastic adhesive/sealant used for marine glass glazing and bonding applications, and for suitable marine window sealing, where strong initial hold, UV resistance and durable adhesion are required.
View Bostik 70-08ASMP marine adhesive sealant with a longer working time for larger or more detailed joints.
View Bostik 940AFast-set SMP marine adhesive sealant for work that needs to progress quickly.
View Bostik 940A FSMultipurpose elastic sealant for marine joints and seams, stocked in Black, Gray and White, with a Bostik-tested role in certain synthetic teak applications.
View Bostik STR220APolyurethane marine sealant used where a flexible, high-movement sealed joint is required.
View Bostik 920Fast-set polyurethane marine sealant for sealed joints that need earlier handling.
View Bostik 920 FSPreparation depends on the window and surrounding materials. Where the materials are unclear, Iris reviews the joint before recommending a preparation step.
Not necessarily. Resealing only addresses the perimeter joint. The water path and the condition of the glazing bond need to be assessed first; Iris can review the details through Application Support.
No. Bonding holds the glass in place; perimeter sealing closes the surrounding joint. They often use different products.
When the window or surrounding material is uncertain, or when the joint will see unusual movement or exposure.
Tell us about the materials and conditions and the Iris team will help narrow the appropriate Bostik options.