REATIFUL 9900 Sealant Waterproof - Outdoor Silicone Sealant for Roof & Wall Cracks (Black)

Overview

Meet REATIFUL 9900 Sealant Waterproof, an exterior-grade silicone sealant designed to stay flexible and crack-free across a wide temperature range. Built for challenging outdoor conditions, it bonds to metal, glass, and tile while remaining elastic enough to move with your building without losing seal integrity.

Why it shines outdoors

Exterior environments push joints to their limits. This sealant blocks moisture, resists UV exposure, and endures heat and cold without cracking. It’s ideal for sealing roof edges, cracks in walls, gaps around fixtures, and other exterior joints where a clean, durable finish matters.

• Outdoor-grade waterproofing that blocks moisture penetration
• UV resistance helps maintain color and finish over time
• Wide temperature tolerance from -50°C to 200°C
• Elastic bond to metal, glass, tile, and more
• Color options include Black, White, and Transparent for a seamless look

Key properties

• Maintains flexibility and stays crack-free across extreme temperatures
• Precision nozzle for smooth, bubble-free application
• Strong, flexible adhesion to common exterior substrates
• Waterproof and UV resistant for indoor and outdoor sealing projects
• Three colors to match different materials

Common uses and real-life scenarios

Use REATIFUL 9900 to seal roof flashing, crack repairs on exterior walls, gaps around gutters, window and door frames, and other joints that face weather exposure or structural movement.

• Roof and wall crack repair for exterior protection
• Gutter and balcony sealing to prevent leaks
• Joint sealing around fixtures, panels, and architectural features

Color, packaging, and storage

Available colors: Black, White, Transparent. Packaging options: 1, 2, or 3 tubes, each 500 g. Shelf life is up to 24 months when stored in a cool, dry environment below 27°C. Note that manual measurement may vary by 0–1 cm and color may appear slightly different on displays.

How to apply

Prepare a clean, dry surface. Cut the nozzle for a precise bead, apply evenly, then smooth with a tool or damp finger for a professional finish. Avoid excessive bubbles and ensure proper curing conditions.