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Custom Foam Gaskets

Whether at home, in the workshop, in industry, or in vehicle construction – our custom-made foam gaskets are precisely tailored to your requirements. Elastic, durable, and versatile – ideal for sealing, insulation, soundproofing, windows, doors, and many other applications.

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diconfa PROFILINE self-adhesive roof window seal, 3 mm thick - compatible with VELUX
diconfa PROFILINE self-adhesive roof window seal, 3 mm thick - compatible with VELUX
**Französisch:** diconfa JOINT EN MOUSSE PROFILINE : Compatible avec les fenêtres de toit Velux (cadres en bois et en PVC). Le joint est utilisé comme bande d’étanchéité pour les clapets de ventilation ou d’aération permanente et se distingue par sa grande flexibilité, son adaptabilité et sa durabilité. QUALITÉ ET MATÉRIAU : Le ruban d’étanchéité est fabriqué en caoutchouc cellulaire EPDM de haute qualité, offrant d’excellentes propriétés de reprise élastique. Le matériau est particulièrement souple, flexible et s’adapte parfaitement aux irrégularités de l’espace – même sur les fenêtres anciennes. Le joint conserve durablement ses hautes performances d’étanchéité, même après une longue utilisation. La bande d’étanchéité est FABRIQUÉE EN ALLEMAGNE et développée par diconfa. AUTRES DIMENSIONS : Le ruban mesure 3 mm d’épaisseur et est disponible en largeurs de 44 mm et 54 mm, ainsi qu’en longueurs de 50 mm à 10 000 mm. COMPATIBILITÉ : Convient aux fenêtres Velux en bois ou en PVC, idéal comme joint pour le clapet de ventilation. REMARQUES : Avant l’achat, veuillez déterminer la largeur nécessaire. Retirez complètement les anciens joints et nettoyez soigneusement la surface. Assurez-vous qu’elle soit propre, sèche et sans graisse pour une adhérence optimale. INSTALLATION : Retirez le film protecteur de la couche adhésive avant la pose et appuyez fermement le joint. Le ruban peut être légèrement repositionné pendant une courte période. JOINT DURABLE : L’adhésif est fortement collant et conçu pour résister aux fortes variations de température. Le joint en mousse PROFILINE de diconfa assure une étanchéité fiable, réduit les courants d’air, l’humidité et le bruit, et garantit une utilisation durable de votre fenêtre de toit. --- **Englisch:** diconfa PROFILINE FOAM SEAL: Suitable for Velux roof windows (wood and PVC frames). The seal is used as a sealing strip for ventilation flaps or permanent air vents and is highly flexible, adaptable, and durable. QUALITY AND MATERIAL: The sealing strip is made of high-quality EPDM cellular rubber with excellent recovery properties. The material is especially soft and flexible, perfectly adapting to uneven gaps – even on older windows. The seal maintains a high level of sealing performance over time, even after long use. The sealing strip is MADE IN GERMANY and developed by diconfa. OTHER SIZES: The sealing strip is 3 mm thick and available in widths of 44 mm and 54 mm, as well as in lengths ranging from 50 mm to 10,000 mm. COMPATIBILITY: Suitable for Velux wooden and PVC windows, ideal as a seal for the ventilation flap. NOTES: Please determine the required width before purchase. Completely remove old seals and clean the surface thoroughly. Ensure that the surface is clean, dry, and free from grease for optimal adhesion. INSTALLATION: Remove the protective liner from the self-adhesive layer before applying and press the seal firmly into place. The strip can be slightly readjusted for a short time. DURABLE SEAL: The adhesive is highly tacky and designed to withstand significant temperature fluctuations. The diconfa PROFILINE foam seal ensures reliable tightness, reduces drafts, moisture, and noise, and guarantees long-lasting performance of your roof window.

From €2.70
diconfa Roof Window Gasket Black - made to measure – compatible with VELUX
diconfa Roof Window Gasket Black - made to measure – compatible with VELUX
100% QUALITY: Our sealing tape is made of durable polyethylene foam and provides a reliable, long-lasting seal for your roof window. The gasket is black. The adhesive is strong and designed to withstand significant temperature changes. FUNCTIONS: Foam gasket – MADE IN GERMANY: Suitable for Velux roof windows made of wood or plastic. Perfect as a sealing strip for ventilation flaps or permanent ventilation flaps. The black gasket remains stable even after extended use. VARIANTS: The black foam gasket is available in widths of 44 mm and 54 mm and lengths from 0.05 m to 10 m. Custom cuts are made precisely according to customer specifications. EASY INSTALLATION: Remove the protective paper from the adhesive, apply the sticky side, and press firmly. Slight repositioning is possible for a short time. IMPORTANT NOTICE: Please determine the required width before purchase. Remove the old gasket and thoroughly clean the surface – it must be clean, dry, and grease-free.

From €2.42
diconfa Roof Window Gasket Grey - made to measure – compatible with VELUX
diconfa Roof Window Gasket Grey - made to measure – compatible with VELUX
100% QUALITY: The sealing tape is made of high-quality polyethylene foam and ensures a durable, reliable seal for your roof window. The gasket is gray. The adhesive is strong and designed to withstand temperature fluctuations. FUNCTIONS: Foam gasket – MADE IN GERMANY: Suitable for Velux roof windows made of wood or plastic. Perfect as a sealing strip for ventilation flaps or permanent ventilation flaps. The gray gasket remains shape-stable and effective even after prolonged use. VARIANTS: The gray foam gasket is available in widths of 44 mm and 54 mm and lengths from 0.05 m to 10 m. Custom cuts are made precisely according to customer requirements. EASY INSTALLATION: Remove the protective paper from the adhesive, apply the sticky side, and press firmly. Minor repositioning is possible for a short time. IMPORTANT NOTICE: Please check the required width before purchase. Remove the old gasket and thoroughly clean the surface – it must be clean, dry, and free of grease.

From €2.51
diconfa Roof Window Gasket white - made to measure – compatible with VELUX
diconfa Roof Window Gasket white - made to measure – compatible with VELUX
100% QUALITY: The sealing tape is made of high-quality polyethylene foam and ensures a permanently consistent seal for your roof window. The gasket is white. The adhesive is strong and specially designed for large temperature fluctuations. FUNCTIONS: Foam gasket – MADE IN GERMANY: Suitable for Velux roof windows made of wood or plastic. Ideal as a sealing strip for the ventilation flap or permanent ventilation flap. The gasket is white and stable, even after prolonged use. VARIANTS: The white foam gasket is available in widths of 44 mm and 54 mm and lengths from 0.05 m to 10 m. Cuts are made exactly to customer specifications. EASY INSTALLATION: Remove the protective paper from the adhesive, apply the sticky side, and press firmly. Slight adjustments are possible for a short period. IMPORTANT NOTICE: Please determine the required width before purchase. Before installation, remove the old gasket and thoroughly clean the surface – it must be clean, dry, and free of grease.

From €2.51
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Material & Structure: Foam / EPDM Cellular Rubber

Depending on the version, high-quality foam grades are used; the black variant is specified as EPDM cellular rubber. EPDM foam is elastic, durable, and designed for changing environmental conditions – ideal when seals need to compress and recover repeatedly over time. In use, the material impresses with uniform pressure distribution, excellent recovery properties, and clean edges – the foundation for a reliable, precisely fitting seal.


Foam Seal Variants

Self-adhesive foam seals are available in grey, black, or white, each in 44 mm or 54 mm widths, with lengths of up to 10 m – precisely cut to size. The high-adhesion glue is designed to withstand large temperature fluctuations; the products are “Made in Germany.” This way, you combine quick installation with reliable hold – whether as narrow sealing strips, continuous frame solutions, or custom-sized cuts.

Application: Roof Windows, Doors, Technical Equipment

Roof window seals compatible with VELUX are particularly popular – suitable for wooden and plastic windows, ideal for example at the ventilation flap. For clean adhesion: remove the protective paper, position the seal, and press firmly; minor adjustments are possible. Before installation, remove the old seal and clean the surface (clean, dry, and grease-free). These instructions also apply to many door, window, and equipment applications where quick retrofitting is required.

Benefits at a Glance

  • Precision fit – cuts made exactly to specification
  • Self-adhesive – quick, clean installation without additional fasteners
  • Elastic & tight – compensates for tolerances, reduces drafts and noise
  • Designed for temperature fluctuations, durable adhesion, Made in Germany
  • Colors & widths selectable (44/54 mm; black/white/grey) – lengths up to 10 m

Discover more solutions in the main category  Seals – for example, our  flange seals for standard-compliant pipe connections.

Frequently Asked Questions

High-quality foam seals are used in this category; the black variant is specified as EPDM cellular rubber. EPDM foam is elastic, stable, and designed for changing environmental conditions – ideal for sealing windows, doors, and roof windows. Its cellular structure allows small surface irregularities to be compensated and ensures the seal maintains long-lasting contact.

You receive precision-cut pieces – the offered sealing strips are manufactured exactly to customer specifications. In this category, widths of 44 mm or 54 mm and lengths of up to 10 m are available; this allows efficient installation on individual sashes, complete frames, and special shapes. This minimizes waste and simplifies installation.

Yes. The seals are self-adhesive – remove the protective paper, position the seal, press firmly, and minor adjustments are possible. Proper preparation is important: remove the old seal and ensure the surface is clean, dry, and grease-free. This allows the temperature-resistant adhesive to achieve its full strength – even under changing roof climate conditions.

Yes, in this category you will find roof window seals compatible with VELUX, suitable for wooden and plastic windows, and optimized, for example, for the ventilation flap. This simplifies maintenance and retrofitting when existing seal profiles lose elasticity over the years. Custom manufacturing ensures that replacement is precise and perfectly fitting.

The high-adhesion glue is specially designed to withstand large temperature fluctuations – a particular advantage for roofs and façades. Combined with the suitable foam quality, it provides long-lasting sealing with uniform contact pressure. Made in Germany ensures consistent material and manufacturing quality.

The available colors are black, white, and grey. This allows the sealing strips to blend discreetly with frame and sash surfaces – visually subtle yet functionally strong. For visible areas (e.g., ventilation flaps), the right color is often crucial to achieve a cohesive overall appearance.

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