Why KISOKISO manufactures the butyl and EPDM sealing tapes and profiles used for IGU edge sealing, glazing and frame joints in windows and doors. Because KISO compounds its own butyl and EPDM, tack, flexibility and adhesion can be tuned for IGU edge sealing and frame movement. For window and glazing manufacturers and distributors, KISO can produce to your specification and supply under your own brand, including packaging, printing and labels. Founded in 1971 and ISO 9001 certified, with production in Køge and customers in 20+ European countries.
ApplicationsInsulating glass unit (IGU) edge sealing
Uses self-adhesive alu-butyl tapes KISO 501 and KISO 502 to bond the aluminium spacer bar to the glass panes in an airtight, low-permeability seal — built for high-volume OEM production lines.
Frame-to-wall joint sealing
Relies on closed-cell EPDM strips KISO 05 Filler and KISO 141 to seal the gap between frame and structure, keeping out water and air while absorbing structural movement.
Moisture and vapour management
Is handled by KISO 513, a diffusion-open membrane that lets water vapour escape while blocking liquid water — preventing condensation in joints and rebates.
For security and anti-theft glazing
KISO Glazing-Butyl Tape Antitheft delivers a purpose-built seal for OEM partners who require security as standard.
Airtightness at the window-to-wall junction
Is handled by KISO 508 Lining Barrier, an LDPE diffusion membrane with butyl and/or tape — meeting the airtightness requirements of the Danish Building Regulations (BR2020).
ProductsButyl and EPDM sealing tapes engineered for OEM window and glazing manufacturers — and the production partners who build for them — across Europe.
Strips of EPDM closed cellular rubber, cut and slit from large “mattresses”. (Without outer skin).
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KISO 458 BUTYL FOAM-CORE is a butyl sealing strip with a highly compressive polyethylene foam core.
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KISO 501 ALU-BUTYL is an aluminium foil with a rubber based extruded and self-adhesive butyl sealing strip.
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KISO 502 TEARPROOF-ALU-BUTYL is a tearproof aluminium foil with a rubber based extruded and self-adhesive butyl sealing strip.
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KISO 508 LINING BARRIER is a closed diffusion membrane consisting of LDPE foil with tape and/or butyl.
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KISO 513 DIFF-OPEN-PP-BUTYL is a diffusion open breathable membrane applied with rubber based extruded and self-adhesive butyl sealing strips.
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KISO GLAZING-BUTYL Antitheft is a rubber based butyl sealing strip.
See moreFAQDry glazing uses a pre-formed sealing profile — such as KISO 141 — to create an airtight and watertight seal without additional sealants. Wet glazing instead uses a liquid sealant, such as silicone, applied on top of a filler strip like KISO 05 Filler, to achieve the same result. KISO supplies sealing profiles and strips for both methods.
IGU edge sealing is the process of bonding the aluminium spacer bar to the glass panes in an insulating glass unit (IGU), creating an airtight, low-permeability seal that prevents moisture ingress between the panes. KISO 501 and KISO 502 self-adhesive alu-butyl tapes are engineered for this application on high-volume OEM production lines.
Yes. KISO’s window and glazing sealing tapes, including the EPDM cellular profiles (KISO 141, KISO 05 Filler) and the butyl tapes, are suitable for both factory (OEM production line) and on-site glazing application.
EPDM cellular profiles, such as KISO 141 and KISO 05 Filler, are closed-cell rubber strips that absorb structural movement and seal by compression — well suited to frame-to-wall joints. Butyl tapes, such as KISO 501 and 502, are self-adhesive, extruded sealants that bond and seal by adhesion rather than compression — used mainly for IGU edge sealing and lap joints. KISO manufactures both material types in-house.
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