Waterproof LED Strip Guide: IP65 vs IP67 vs IP68

You have found the perfect LED strip. Right voltage, right color temperature, right brightness. Then the product page says "IP67" — and the one next to it says "IP65," and a third claims "IP68." Three letters apart, very different strips.

Waterproofing is where most sourcing mistakes happen, because the IP rating tells you that a strip resists water — not how it resists it, or for how long. Pick the wrong rating and the strip fails in one rainy season. Over-spec it and you pay 30–40% more per meter for protection a kitchen cabinet will never need.

This guide breaks down what IP ratings actually mean, how each waterproofing method is constructed, and which rating fits which project — the same framework we use with OEM/ODM buyers at our factory, which has produced LED strips since 2017.

What IP Ratings Actually Mean

"IP" stands for Ingress Protection. Every rating has two digits:

• First digit — protection against solids (dust, tools, fingers). "6" means completely dust-tight.

• Second digit — protection against liquids. This is the number that matters for waterproofing.

For LED strips, the second digit breaks down like this:

Rating	Liquid protection	What it handles in practice
IP2X (e.g. IP20)	None	Dry indoor air only
IP65	Water jets from any direction	Rain, splashes, humidity
IP67	Temporary immersion (up to 1 m, 30 min)	Standing water, heavy rain, burial in gravel beds
IP68	Continuous immersion (per manufacturer's depth spec)	Ponds, fountains, marine environments

The jump from 6 to 7 is the big one. IP65 resists water hitting the strip. IP67 survives the strip sitting in water. IP68 is rated to live in water.

How Each Waterproofing Method Is Built

The rating comes from the construction. There are three common methods, and they affect flexibility, light quality, and longevity differently.

IP65: Silicone Coating

The strip passes through a coating machine that applies a thin layer of silicone directly over the LEDs and PCB. The result is a smooth, sealed surface that adds minimal thickness.

• Pros: Cheapest waterproof option, stays flexible, retains most of the original light output and beam appearance.

• Cons: Seals the top surface only — cut points and edges are vulnerable. Not suitable anywhere water pools.

• Use for: Under-cabinet kitchen lighting, bathroom mirror zones (away from direct jets), covered balconies, eave lighting.

IP67: Silicone Sleeve

The strip is inserted into a continuous silicone tube, then sealed at both ends with silicone end caps. The entire assembly is protected, including the cut points.

• Pros: Full enclosure, survives rain and temporary flooding, easier to clean, and the sleeve can be replaced on some designs.

• Cons: Slightly stiffer bending, small light loss through the sleeve wall (typically 5–8%).

• Use for: Outdoor facades, garden borders, stair edges exposed to rain, signage, landscape lighting in gravel or soil contact.

Silicone neon flex is worth a mention here: it is built as a silicone extrusion around the LED board — hollow versions are inherently IP67, solid-extrusion versions (like our 360° neon series) reach IP68. If your project needs both waterproofing and a clean linear look, our silicone neon strip series combines both in one product.

IP68: Solid Silicone Extrusion + Sealed End Caps

The strip is pulled through an extruder that fully embeds the PCB and LEDs inside solid silicone — no air gap anywhere — and the ends are closed with molded, injection-sealed end caps. Because water has no hollow cavity to leak into, this is the only construction rated for continuous submersion.

• Pros: Can run underwater permanently (typically to 1–2 m, check the manufacturer's depth spec), excellent UV and chemical resistance when quality silicone is used.

• Cons: Highest cost per meter, thicker profile (harder to hide in channels), slightly reduced flexibility, and repairs underwater are effectively impossible — plan the runs carefully.

• Use for: Pond and fountain lighting, pool surrounds (per local electrical codes), marine and dock lighting, buried in-ground linear lighting.

Quick Decision Table

	IP20 (bare)	IP65 (coated)	IP67 (sleeved)	IP68 (solid silicone)
Waterproofing	None	Splash/jet resistant	Immersion to 1 m, 30 min	Continuous immersion
Kitchen cabinets, dry coves	✅ Best value	Overkill	Overkill	Overkill
Bathroom splash zones	❌	✅	✅	Overkill
Outdoor facades, rain-exposed	❌	Borderline	✅	✅
Garden, landscape, ground contact	❌	❌	✅	✅ Best
Ponds, fountains, marine	❌	❌	⚠️ Short-term only	✅ Only option
Relative cost per meter	1.0×	~1.15×	~1.3×	~1.4–1.6×

Rule of thumb: choose the lowest rating that covers the worst realistic condition of the installation, then verify the construction quality. A well-made IP65 outlasts a badly made IP67.

Installation Tips for Wet Locations

The strip is only as waterproof as its weakest point — and the weakest points are almost never the strip itself.

1. Seal every cut end. The moment you cut a waterproof strip, you have opened it. Re-seal cut ends with neutral-cure silicone and, for IP67/IP68, proper molded end caps — not hot glue.

1. Use IP-rated connectors. Standard clip-on connectors are IP20. In wet areas, solder the joints and re-seal with adhesive heat-shrink or silicone sleeves.

1. Mind the power supply. Most 12V/24V drivers — including the 24V power supplies in our catalog — are IP20 and must sit in a dry, ventilated enclosure. The strip being IP68 does nothing if the driver drowns.

1. Mount with the LED surface facing down or sideways where possible, so water sheds off rather than pooling on the coating.

1. Voltage drop still applies outdoors. For long outdoor runs, 24V beats 12V — less current for the same wattage, longer usable length per feed point.

Sourcing Tips from a Factory Perspective

1. Ask for the IP test report, not just the marking. Reputable factories test to IEC 60529. "IP68" without a depth and duration spec is marketing.

1. Check the silicone quality. Low-grade silicone yellows within a year of UV exposure and drags down light output. Ask about UV-stabilized, anti-yellowing silicone — the difference is visible within 12 months outdoors.

1. Ask how the ends are sealed. Molded end caps outperform glued ones, especially for IP67/IP68.

1. Request a salt-spray test for coastal or marine projects. Standard strips are not rated for salt fog unless specifically formulated.

1. Confirm OEM/ODM options if you need custom lengths, IP ratings, colors, or private labeling — factory-direct customization costs far less than most buyers expect at volume.

If you are also deciding between chip types for your project, see our companion guide: COB vs SMD LED Strip: Which One Should You Choose?

The Bottom Line

• Dry indoors → IP20. Don't pay for waterproofing you won't use.

• Splashes and humidity (kitchens, bathrooms) → IP65.

• Rain and weather exposure (facades, gardens, landscape) → IP67, or silicone neon flex which is IP67 by design.

• Water contact and submersion (ponds, fountains, marine) → IP68, no exceptions.

Browse our waterproof LED strip series for IP-rated strips produced in our own facility — samples and OEM/ODM quotes are available on request.