
EVERBUILD® EVERFLEX® 115 GP Building Mastic
by Sika Everbuild
MPN489636
Prices updated 17 Mar 2026
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Product Description
Traditional Oil-Based Mastic for Durable Sealing. EVERBUILD® EVERFLEX® 115 GP Building Mastic is a traditional oil-based pointing mastic designed for general sealing and pointing applications in traditional construction. It provides an effective weatherproof seal and adheres to most common building materials without the need for a primer.. Key Features & Benefits. Weatherproof Seal: Provides a durable seal against weather elements.. Overpaintable: Can be painted over once cured to match surrounding surfaces.. High Solids Formulation: Excellent gap-filling properties without shrinkage.. Adheres to Most Surfaces: Bonds well to concrete, brick, wood, metals, and glass.. Easy Application: Can be applied using a standard sealant gun.. Ideal For. Perimeter pointing around doors and windows, both internally and externally.. Sealing low movement vertical joints in traditional construction.. General-purpose sealing applications in building and construction.. Product Details. Colours: White, Brown, Grey, Stone.. Packaging: 285ml cartridges.. Application Temperature: +5°C to +50°C.. Service Temperature: -25°C to +70°C (intermittent up to +90°C).. Skinning Time: Approximately 24 hours, depending on conditions.. Full Cure Time: Up to 7 days, depending on joint depth and ambient conditions.. Movement Capability: Low movement joints (±7.5%).. Application Instructions. Surface Preparation: Ensure all surfaces are clean, dry, and free from dust, grease, and other contaminants.. Application: Cut the nozzle to the required width and apply using a standard sealant gun. Smooth the sealant with a wet spatula or tool within 15 minutes of application.. Finishing: Allow the sealant to skin over and cure fully before overpainting.. Limitations. Not suitable for use in areas subject to constant water immersion.. Not recommended for use in floor joints or areas with high abrasion.. May stain natural stone; test on a small area before full application.. Do not apply when rain is imminent or in temperatures below +5°C.. Cleaning of Tools. Clean tools and excess mastic with white spirit immediately after use. Once cured, the mastic can only be removed mechanically.
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