Can this be applied over existing silicone

I always clean old stuff of first then apply

Can you use for roof rail sealant for VW micro camper(caddy)?

I would use it as I repaired my roof to gutter seam with it and have had no issues yet and that's a couple of months ago

We need to reseal our whole motorhome around all the joints etc. How many packs of this would we need? The Moho is 7.5m long. Thanks

Depends upon what size gaps you’re going to seal. Very sticky, I’d start with two and smooth it in. You could always get more if needed.

Can silka522 be overpainted

Overpainting. Sikaflex®-522 can be best painted within the skin formation time. If painting process takes place after the sealant has built a skin, adhesion could be improved by treating the joint surface with Sika® Aktivator-100 or Sika® Aktivator-205 prior to paint process.

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🛡️ Seal smart, live fresh – the pro’s choice for lasting caravan care!

STAY FRESH HYGIENIC - Contains powerful fungicidal agents to prevent mould in ventilation and AC areas.
UV PROOF WHITE FINISH - Enhanced colour stability resists yellowing and discolouration under harsh sunlight.
CERTIFIED FOOD SAFE SEALANT - ISEGA certified for hygienic use in food prep zones, ensuring safety and cleanliness.
VERSATILE INDOOR OUTDOOR USE - Bonds elastically to timber, glass, metal, ceramics, plastics, and painted surfaces.
ULTIMATE CARAVAN MOTORHOME REPAIR - Silicone & solvent-free formula for durable, professional-grade sealing.

Sika Sikaflex-522 is a 300ml moisture-curing, silicone- and solvent-free adhesive sealant designed specifically for caravan and motorhome repairs. It offers superior UV and weather resistance, high fungicidal protection to prevent mould, and improved colour stability in a clean white finish. Certified safe for food preparation areas, it bonds elastically to a wide range of materials, making it ideal for both interior and exterior applications.

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Manufacturer	Sikaflex
Part Number	522
Product Dimensions	4.9 x 4.9 x 22.5 cm; 472 g
Item model number	522
Size	300ml
Colour	White
Material	Silane Terminated Polymer
Item Package Quantity	1
Certification	Entspricht den Hygieneanforderungen für Klima- und Lüftungsanlagen nach VDI 6022, Blatt 1:2011-07
Special Features	Free from isocyanate, solvents and phthalates
Usage	Suitable for elastic sealing and bonding applications indoors and outdoors
Included Components	Adehesive Tube
Batteries included?	No
Batteries Required?	No
Item Weight	472 g

Sika Sikaflex -522 Caravan and Motorhome Adhesive Sealant – Moisture Curing – Weather and Mould Resistant – White – 300ml

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