3 Meters Silicone Shower Tray Sealing Strip (15mm H x 25mm W) with Two Adhesive Backings
Product description
Key takeaways
If you’re trying to stop water creeping under a shower tray, around a bath edge, or along a bathroom/utility gap, this silicone shower tray sealing strip is a straightforward “gap cover” approach. It’s made for wet areas and comes with two self-adhesive tapes on the back, so installation is mainly measure, cut, peel and stick.
It’s not a magic fix for every situation though. The strip is only 15mm tall, and it also needs a straight-line fit (corners are handled by cutting/splicing). So it’s best viewed as a targeted sealing aid for modest gaps and edging details rather than a full replacement for bigger waterproofing work.
What it is and what it’s for
This product is a silicone edging/retaining strip designed to create a simple water barrier. The idea is to form a small dam along common trouble spots like shower floors and shower trays, bath edgings, around kitchen sinks, and similar areas where a bit of splash or runoff can otherwise travel where it shouldn’t.

In day-to-day terms, think of it as the kind of “keep water where it lands” strip you’d install at the boundary line of a tray, where tile meets edging, or where a bathroom fixture leaves a narrow gap. It’s also described as useful for wet and dry separation—helpful if you want to reduce dampness spreading into adjacent areas.
What you’ll notice in use
The strip itself is food-grade organic silicone, positioned as corrosion resistant and resistant to high temperature and wear. That’s the sort of material choice you want in a bathroom where the sealing line will be exposed to moisture regularly.
On paper, the double adhesive backing is the other main selling point: two self-adhesive tapes are there to support firmer adhesion and better sealing performance compared with a single tape approach. Still, adhesion is only as good as your surface prep and conditions on the day.


A practical micro-scenario: you measure the run along the shower tray edge, cut the strip to length, then press it into place on a clean, fully dry surface. Once fitted, it should act like a small raised lip to reduce water escape beyond the line.

How to install (and where people get stuck)
Installation is intentionally simple: clean and dry the surface, measure and cut, then peel and stick. That makes it appealing if you want a DIY-friendly fix without having to replace any tiles or fixtures.
But the instructions also add an important detail for longer-term use: you’re advised to use silicone sealant (glue) to fill the edges of the water barrier and then allow it to dry for 24 hours until the sealant is solid. Note the package does not include silicone sealant, so you’ll need to source that separately.
There are also clear fit limitations: - The strip can only be fixed in a straight line, you shouldn’t bend it. - For corners, the guidance is to cut at 45 degrees and splice to create 90-degree turns. - In cold season conditions, you may need to warm the adhesive (using a hair dryer) to restore stickiness.
Tech specs

- Type: Silicone shower tray sealing strip / water barrier edging trim
- Material: Food grade organic silicone
- Adhesive: Two self-adhesive tapes on the back
- Size: 15mm H x 25mm W
- Length: 3 metres
Where it shines (and where it may fall short)
It makes sense if you’re dealing with a small, linear gap or edging line around a shower tray, bath edging, sink area, or a similar wet-zone boundary where you want a modest water dam. If your main issue is splash and minor runoff, this kind of strip can be a practical, low-fuss addition.


Worth considering if you’re comfortable doing prep properly and (for best longevity) you’re willing to add silicone sealant at the edges.
It might not be the best choice if you need a barrier-free shower solution or a large water-holding area, because the height is only 15mm. It’s also less suitable if you want a flexible strip for curved runs—this one is meant for straight lines, with corner splicing done by cutting.

¿Merece la pena?
Overall, this is a “useful if your problem matches the design” product. The material and double adhesive approach are meant to help in damp conditions, and the installation method is clear enough for most DIYers.
However, it’s not perfect. If you need a taller barrier than 15mm, or if your installation area requires heavy bending or complex shapes, you may end up fighting the limitations rather than solving the leak.
So, buy it when you’ve got a straight edging line, manageable gap, and you can prep the surface (and ideally apply silicone sealant at the edges for longer use). Skip it if you’re hoping to tackle bigger waterproofing responsibilities or a requirement for barrier-free access.
Quick buying checklist

Before you order, it’s worth double-checking: - The gap you’re sealing: the strip is 15mm high, so it needs to suit your layout. - The run shape: it should be straight, corners need a cut/splice approach. - Surface conditions: the surface must be clean and dry for the adhesive to do its job. - Season/temperature: if it’s cold, warming the adhesive may help. - You’ll need silicone sealant: it’s recommended for the edges, but not included.
FAQ


Does the strip come with silicone sealant?
No. The guidance suggests using silicone sealant to fill the edges for long-term use, but the package does not include it.
Can it be bent to follow a curve?

It’s only meant to be fixed in a straight line. For corners, the instruction is to cut at 45 degrees and splice to achieve 90-degree joins.
What height is the water barrier?
It’s 15mm tall (15mm H x 25mm W).
What happens in cold weather?
In colder conditions, you may need to use a hair dryer to warm the adhesive and restore stickiness.
Where can it be used?
It’s described for shower floors/shower trays, bath edgings, kitchen sinks, under bathroom doors, and around washing machines or toilets to help form a water barrier.
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