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

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

Product ID: 223298374

Details

Brand
Sika
Item dimensions L x W x H
49 x 49 x 225
Item weight
0.47 Kilograms
Material
Silane Polymer
Water resistance level
Waterproof

🦠High fungicidal formula prevents mould growth

☀️UV & weather-resistant for lasting durability

🛠️300ml cartridge for precise application

36848CFA

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Description

🚐 Seal it like a pro—weatherproof, mouldproof, and ready for adventure!

ECO SMART SAFE - Free from isocyanates, solvents, and phthalates, combining performance with peace of mind.
FAST CURING TIME - Achieves full cure in just 30 minutes, so you can get back on the road without delay.
VERSATILE BONDING POWER - Bonds seamlessly with wood, glass, metal, ceramics, plastics, and painted surfaces—perfect for every caravan or motorhome project.
HEALTH CONSCIOUS HYGIENE - Certified safe for food prep areas and packed with fungicidal agents to keep your space mould-free and fresh.
PROFESSIONAL GRADE DURABILITY - Silicone & solvent-free formula ensures a tough, weatherproof seal that lasts season after season.

Sika Sikaflex-522 is a 300ml moisture-curing adhesive sealant designed specifically for caravans and motorhomes. It offers superior UV and weather resistance, high fungicidal protection to prevent mould, and meets hygiene standards for food preparation areas. This versatile, silicone- and solvent-free sealant bonds to multiple substrates and cures fully in 30 minutes, making it the trusted choice for professional repairs and maintenance.

Specifications

ASIN	B08BZCXQCH
Best Sellers Rank	168 in DIY & Tools ( See Top 100 in DIY & Tools ) 3 in Sealers
Brand	Sika
Colour	White
Compatible Material	Wood, Glass, Metals, Ceiling
Container Type	Cartridge
Country Of Origin	Switzerland
Customer Reviews	4.7 out of 5 stars 12,608 Reviews
Full Cure Time	30 Minutes
Global Trade Identification Number	07612895613086
Included Components	Adehesive Tube
Item Form	Paste
Item Package Quantity	1
Item Type Name	Caravan Adhesive Sealant
Item Volume	0.3 Litres
Item Weight	480 Grams
Item form	Paste
Manufacturer	Sika
Manufacturer Contact Information	Sika Everbuild 41 Knowsthorpe Way, Leeds LS9 0SW
Manufacturer Part Number	522
Material	Silane Terminated Polymer
Model Number	634863
Other Special Features of the Product	Free from isocyanate, solvents and phthalates
Product Warranty	Product guarantees 0 months.
Special feature	Free from isocyanate, solvents and phthalates
Specific Uses For Product	Suitable for elastic sealing and bonding applications indoors and outdoors
Specific uses for product	Suitable for elastic sealing and bonding applications indoors and outdoors
Unit Count	300.0 millilitre
Water Resistance Level	Waterproof

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