Description
MX Flexi Seal Strip — 2.8m — Waterproof Upstand for Flat Shower Trays
The MX Flexi Seal Strip creates a professional waterproof upstand around the perimeter of a flat shower tray, allowing tiles to be fitted directly over it for a seamless, watertight finish. Applied to the tray before installation, the flexible strip accommodates natural building movement and settlement whilst maintaining a permanent seal at the vulnerable tray-to-wall junction. The 2.8m length and 70mm width provide complete coverage for a standard shower tray installation. Engineered by MX for professional-grade waterproofing performance.
⚠️ For flat shower trays only. This strip is designed for use with flat (zero-upstand) shower trays where a tiled upstand is required. It is not suitable for trays with a pre-formed upstand. Apply to the tray perimeter before positioning the tray.
Key Features
-
2.8m length × 70mm width — sufficient for complete perimeter coverage of a standard shower tray
-
Flexible construction — accommodates building movement and settlement without cracking the seal
-
Tile-over design — tiles are fitted directly over the upstand for a seamless finish
-
Waterproof upstand — prevents water ingress at the tray-to-wall junction
-
Professional-grade performance — engineered by MX for reliable, long-lasting waterproofing
- Suitable for professional fitters and competent DIY
Technical Specification
-
Brand: MX
-
SKU: WAY
-
EAN: 5017706771252
-
Type: Flexible waterproofing upstand strip
-
Length: 2.8 metres
-
Width: 70mm
-
Weight: 1kg
-
Application: Flat shower trays — applied to tray perimeter before installation
-
Compatible with: Flat (zero-upstand) shower trays
-
Installation: Apply strip to tray perimeter; tile over upstand once tray is positioned
How It Works
The Flexi Seal Strip is applied around the perimeter of the flat shower tray before the tray is positioned. Once the tray is in place, the 70mm wide flexible upstand extends above the tray surface. Tiles are then fitted over the upstand, creating a continuous waterproof barrier between the tray and the tiled wall. The flexible material allows for natural building movement without compromising the seal.
Suitable For
- Flat shower tray installations requiring a tiled upstand
- Standard shower enclosures — 2.8m covers a full perimeter
- Walk-in shower installations
- Wet room shower areas with flat trays
- New builds and bathroom renovations
- Commercial bathroom projects
Coordinate Your Shower Installation
Frequently Asked Questions
What is a Flexi Seal Strip used for?
A Flexi Seal Strip creates a waterproof upstand around the perimeter of a flat shower tray. Flat trays have no pre-formed upstand, so without a seal strip, water can penetrate the junction between the tray and the wall. The strip is applied before the tray is installed; tiles are then fitted over it to create a seamless, watertight barrier. It is an essential component for any flat shower tray installation where a tiled finish is required.
What are the dimensions of this strip?
The MX Flexi Seal Strip is 2.8 metres long and 70mm wide, weighing 1kg. The 70mm width creates a generous upstand above the tray surface, providing ample coverage for tiling over. The 2.8m length is sufficient for the full perimeter of most standard shower tray installations.
Is this strip suitable for all shower trays?
This strip is designed for flat (zero-upstand) shower trays only. It is not required for trays with a pre-formed upstand, as those trays already have a raised edge to seal against the wall. If you are unsure whether your tray requires a seal strip, call us on 01603 381095 and we can advise.
Will 2.8m cover my shower tray?
The 2.8m length covers the full perimeter of most standard shower tray installations. The strip only needs to cover the sides that meet the wall — typically 3 sides for a corner installation, or 2 sides for a recess. For a 900mm corner installation: 2 sides = 1.8m; 3 sides = 2.7m, which the 2.8m strip covers with minimal waste. For larger trays or 4-sided installations, you may need more than one strip. Measure your installation before ordering to confirm.
When should the strip be applied?
The Flexi Seal Strip should be applied to the perimeter of the shower tray before the tray is positioned. Once the strip is in place and the tray is installed, tiles are fitted over the upstand. Follow the manufacturer’s installation instructions supplied with the product for best results.
Can a competent DIYer install this?
Yes — the MX Flexi Seal Strip is suitable for professional bathroom fitters and competent DIY enthusiasts. Correct application is important to ensure a watertight seal — follow the installation instructions carefully. If you are unsure, professional installation is recommended.
Can I order if the item shows as out of stock?
Yes — this product is available to order even when stock shows as zero. Please allow additional lead time and contact us on 01603 381095 to confirm availability.
