Tanking & Sealing

Swan By Impey Waterbarrier Floor Tanking Kit — 5m² — Waterproof Membrane & Accessories The Swan By Impey Waterbarrier 5m² Floor Tanking Kit is a complete wet room floor waterproofing system, providing everything needed to fully tank a wet room floor up to 5m². The high-performance waterproof membrane and included accessories create a robust, long-lasting barrier against water penetration — protecting the subfloor and structure beneath. Trusted by professional bathroom installers and backed by a 10-year guarantee. ⚠️ Professional installation recommended. Wet room tanking is a critical waterproofing stage. Incorrect application can result in water damage to the subfloor and structure. Follow the Swan By Impey installation guidelines and ensure all joints, corners, and penetrations are correctly sealed. Key Features Covers up to 5m² — suitable for standard wet room floor areas Complete kit — membrane, 4 internal corners, and joint tape all included 4 internal corners included — pre-formed corners for a reliable seal at floor-to-wall junctions Joint tape included — sufficient tape for all membrane joints within the kit coverage area High-performance membrane — robust, long-lasting protection against water penetration 10-year guarantee — Swan By Impey comprehensive warranty Trusted brand — Swan By Impey; specialist wet room and waterproofing manufacturer Technical Specification Brand: Swan By Impey Range: Waterbarrier SKU: SWWF023 Type: Floor tanking kit — waterproof membrane and accessories Coverage: Up to 5m² Application: Wet room floors Guarantee: 10 years What’s Included Swan By Impey Waterbarrier waterproof membrane (5m² coverage) 4 × pre-formed internal corners Joint tape (sufficient for membrane joints within the kit area) Installation instructions Guarantee documentation Suitable For Wet room floor waterproofing up to 5m² New wet room installations Bathroom renovations requiring full floor tanking Timber and concrete subfloor applications (confirm with Swan By Impey installation guide) Residential and commercial wet room projects Coordinate Your Wet Room Installation Shower Trays — browse compatible wet room and flat shower trays Shower Enclosures — complete your wet room installation Shower Valves & Accessories — valves, heads, and arms Frequently Asked Questions What is floor tanking? Floor tanking is the process of applying a waterproof membrane system to a wet room floor before tiling. Unlike a shower tray, a wet room has a tiled floor with no physical barrier — the waterproofing is built into the floor construction itself. Tanking creates a continuous waterproof layer beneath the tiles that prevents water from penetrating the subfloor and structure. It is an essential stage in any wet room installation and must be done correctly to prevent costly water damage. What area does this kit cover? This kit covers up to 5m² of floor area. For a typical wet room, measure the floor area (length × width in metres) to confirm this kit is sufficient. For larger wet rooms, additional kits or a larger coverage option may be required. Call us on 01603 381095 if you need advice on coverage for your specific installation. What is included in this kit? The kit includes the Swan By Impey Waterbarrier waterproof membrane (sufficient for 5m²), 4 pre-formed internal corners for sealing floor-to-wall junctions, and joint tape sufficient for all membrane joints within the kit coverage area. Installation instructions and guarantee documentation are also included. Why are internal corners included? Internal corners — where the floor meets the wall — are the most vulnerable points in a wet room waterproofing system. Water pressure and building movement concentrate at these junctions, making them the most likely points of failure if not correctly sealed. The 4 pre-formed internal corners included in this kit are specifically designed to create a reliable, consistent seal at these critical junctions, removing the need to cut and fold the membrane by hand. Is this kit suitable for timber subfloors? Swan By Impey Waterbarrier products are designed for use on a range of subfloor types. Please refer to the Swan By Impey installation guide supplied with the kit to confirm suitability for your specific subfloor. If you are unsure, call us on 01603 381095 and we can advise. What guarantee does this kit come with? The Swan By Impey Waterbarrier floor tanking kit carries a 10-year guarantee, covering the waterproofing performance of the system when installed in accordance with Swan By Impey’s installation guidelines. Is professional installation required? Professional installation is strongly recommended. Wet room tanking is a critical waterproofing stage — incorrect application, particularly at joints, corners, and pipe penetrations, can result in water damage to the subfloor and building structure. The 10-year guarantee may be conditional on correct installation in accordance with Swan By Impey’s guidelines. 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.

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Flexi-Seal Waterproofing Strip — 4.0m Pre-Cut — Flexible Rubber — Large Baths & Shower Trays The Flexi-Seal 4.0m Waterproofing Strip is a professional flexible rubber seal that creates a permanent, watertight barrier between shower trays, baths, or worktops and bathroom walls. The butyl-based adhesive strip bonds securely to the tray or bath edge; tiles or wall panels are then fitted directly over the seal. The flexible rubber construction accommodates building movement and settlement without compromising the waterproof barrier. Independently tested to BS EN 28510-1 1993. The 4.0m pre-cut length provides generous coverage for large baths, P-shaped and L-shaped baths, and full-size shower trays. ✅ Pre-cut 4.0m — ready to use. Ideal for large baths (1700–1800mm), P-shaped and L-shaped baths, and full-size shower trays (900–1200mm) on 3 sides. For standard installations, see the Flexi-Seal 2.0m strip or the Classi Seal 3.2m strip. Key Features 4.0m pre-cut length — generous coverage for large baths, P-shaped baths, and full-size shower trays Flexible rubber construction — accommodates building movement and settlement Butyl-based adhesive — integrated adhesive strip; secure, permanent bond Concealed installation — tiles or wall panels fit directly over the seal BS EN 28510-1 1993 tested — independently tested to British and European standards Suitable for shower trays, baths, and worktops Prevents water damage — protects against leakage at vulnerable wall junctions Technical Specification Brand: Spajet SKU: FLEXI14 EAN: 5060134754946 Type: Flexible rubber waterproofing strip Length: 4.0 metres (pre-cut) Width: 100–120mm (upstand + base) Weight: 0.8kg Material: Flexible rubber Adhesive: Butyl-based integrated adhesive strip Testing: BS EN 28510-1 1993 (pressure-sensitive adhesive tapes) Application temperature: 5°C to 35°C Suitable surfaces: Clean, dry, dust-free Coverage: Large baths, P-shaped baths, full-size shower trays, extended worktops Finish: Tile or panel over seal; silicone at base edge Coverage Guide Use these examples to confirm the 4.0m length suits your installation: Standard 1700mm bath — 3 sides: 2 × 1700mm + 700mm end = 4,100mm — 4.0m provides near-complete coverage; trim the short end slightly or use a small offcut 1200mm shower tray — 3 sides: 2 × 1200mm + 800mm = 3,200mm — 4.0m provides complete coverage with 800mm to spare 900mm shower tray — 3 sides: 2 × 900mm + 900mm = 2,700mm — 4.0m provides complete coverage with 1,300mm to spare P-shaped or L-shaped bath: Measure the full perimeter of sides meeting the wall and add 10% for overlaps What’s Included Flexi-Seal flexible rubber waterproofing strip — 4.0m pre-cut Integrated butyl-based adhesive backing Installation instructions How It Works Prepare: Ensure tray, bath, or worktop edges are clean, dry, and dust-free Apply: Peel backing and press Flexi-Seal firmly onto the edge using the butyl adhesive Position: Install the tray, bath, or worktop — the upstand extends up the wall Tile: Fit tiles or wall panels over the upstand Seal: Apply neutral cure silicone to the bottom edge once tiling is complete Suitable For Large baths — 1700mm and 1800mm standard baths on 3 sides P-shaped and L-shaped shower baths — extended perimeter coverage Full-size shower trays — 900mm, 1000mm, 1200mm trays on 3 sides Extended bathroom worktops and vanity units New builds where building movement is expected Bathroom renovations and upgrades Commercial bathrooms — hotels, gyms, care facilities Also Available — Waterproofing Strips Flexi-Seal 2.0m Waterproofing Strip — same product; shorter pre-cut length for compact shower trays, smaller baths, and worktops Classi Seal 3.2m Waterproofing Strip — alternative brand; self-adhesive membrane; standard 3-sided coverage Classi Seal Per Metre — cut to your exact length from a 25m roll Shower Trays — browse compatible flat and low profile trays Frequently Asked Questions Will 4.0m cover my bath or shower tray? Use the coverage guide above to check. For a standard 1700mm bath on 3 sides you need approximately 4.1m — the 4.0m strip provides near-complete coverage with only a small shortfall on the short end (which can be supplemented with an offcut or a short additional piece). For a 1200mm shower tray on 3 sides you need 3.2m, leaving 800mm to spare. For P-shaped or L-shaped baths, measure the full perimeter of the sides meeting the wall and add 10% for overlaps before ordering. What is the difference between the 4.0m and 2.0m Flexi-Seal? Both are the same Spajet Flexi-Seal product — flexible rubber, butyl adhesive, BS EN 28510-1 tested. The only difference is the pre-cut length. The 2.0m version is suited to compact shower trays (700–800mm), smaller baths, and worktops. The 4.0m version (this product) is suited to large baths, P-shaped baths, and full-size shower trays where more coverage is needed. What is the difference between Flexi-Seal and Classi Seal? Both are professional waterproofing tanking strips but differ in material and adhesive. Flexi-Seal uses a flexible rubber construction with a butyl-based adhesive, tested to BS EN 28510-1 1993. Classi Seal uses a flexible waterproof membrane with a pressure-sensitive self-adhesive backing and accommodates up to 15mm of movement. If you are unsure which is right for your installation, call us on 01603 381095. Is Flexi-Seal suitable for P-shaped or L-shaped baths? Yes — the 4.0m length is specifically suited to P-shaped and L-shaped baths where the extended perimeter requires more strip than a standard rectangular bath. Measure the full length of all sides that meet the wall and add 10% for overlaps before ordering to confirm the 4.0m length is sufficient for your specific bath. What type of silicone should I use at the base edge? Always use neutral cure silicone (not acetic/vinegar cure). Acetic cure silicone releases acetic acid during curing which can damage rubber and adhesive materials. Neutral cure silicone is widely available and is the correct choice for use with rubber waterproofing strips. Is Flexi-Seal required if my shower tray has an integrated upstand? No — if your shower tray has an integrated upstand, the waterproofing is already built into the tray design and a separate seal strip is not required. Check your shower tray specification before ordering. If you are unsure, call us on 01603 381095. 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.

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Flexi-Seal Waterproofing Strip — 2.0m Pre-Cut — Flexible Rubber — Butyl Adhesive The Flexi-Seal Waterproofing Strip is a professional flexible rubber seal that creates a permanent, watertight barrier between shower trays, baths, or worktops and bathroom walls. The butyl-based adhesive strip bonds securely to the tray or bath edge; tiles or wall panels are then fitted directly over the seal. The flexible rubber construction accommodates building movement and settlement without compromising the waterproof barrier. Independently tested to BS EN 28510-1 1993. The 2.0m pre-cut length is ideal for compact shower trays, smaller baths, and worktop sealing. ✅ Pre-cut 2.0m — ready to use. Ideal for compact shower trays (700–800mm square or quadrant), smaller baths, and worktops. For standard 3-sided shower tray or bath installations, see the Classi Seal 3.2m strip or the Flexi-Seal 4.0m strip for larger installations. Key Features 2.0m pre-cut length — sized for compact shower trays, smaller baths, and worktops Flexible rubber construction — accommodates building movement and settlement Butyl-based adhesive — integrated adhesive strip; secure, permanent bond Concealed installation — tiles or wall panels fit directly over the seal BS EN 28510-1 1993 tested — independently tested to British and European standards Suitable for shower trays, baths, and worktops Prevents water damage — protects against leakage at vulnerable wall junctions Technical Specification Brand: Spajet SKU: FLEXI2 EAN: 506134754915 Type: Flexible rubber waterproofing strip Length: 2.0 metres (pre-cut) Width: 100–120mm (upstand + base) Weight: 0.4kg Material: Flexible rubber Adhesive: Butyl-based integrated adhesive strip Testing: BS EN 28510-1 1993 (pressure-sensitive adhesive tapes) Application temperature: 5°C to 35°C Suitable surfaces: Clean, dry, dust-free Coverage: Compact shower trays, smaller baths, worktops Finish: Tile or panel over seal; silicone at base edge What’s Included Flexi-Seal flexible rubber waterproofing strip — 2.0m pre-cut Integrated butyl-based adhesive backing Installation instructions How It Works Prepare: Ensure tray, bath, or worktop edges are clean, dry, and dust-free Apply: Peel backing and press Flexi-Seal firmly onto the edge using the butyl adhesive Position: Install the tray, bath, or worktop — the upstand extends up the wall Tile: Fit tiles or wall panels over the upstand Seal: Apply silicone sealant to the bottom edge once tiling is complete Suitable For Compact shower trays — 700mm or 800mm square or quadrant trays (2 sides) Smaller baths — short ends or single-side sealing Bathroom worktops — vanity units and countertop sealing New builds where building movement is expected Bathroom renovations and upgrades Commercial bathrooms — hotels, gyms, care facilities Also Available — Waterproofing Strips Flexi-Seal 4.0m Waterproofing Strip — same product; longer pre-cut length for larger baths and shower trays Classi Seal 3.2m Waterproofing Strip — alternative brand; self-adhesive membrane; standard 3-sided coverage Classi Seal Per Metre — cut to your exact length from a 25m roll Shower Trays — browse compatible flat and low profile trays Frequently Asked Questions Will 2.0m cover my shower tray or bath? The 2.0m length is designed for compact installations — typically a 700mm or 800mm square or quadrant shower tray sealed on two sides (2 × 800mm = 1.6m, leaving trim allowance), or a smaller bath end or single-side seal. For a standard 3-sided shower tray or bath installation (approx. 2.5–3m of strip needed), see the Classi Seal 3.2m strip. For larger baths and shower trays, see the Flexi-Seal 4.0m strip. What is the difference between Flexi-Seal and Classi Seal? Both are professional waterproofing tanking strips for shower trays and baths, but they differ in material and adhesive. Flexi-Seal (this product) uses a flexible rubber construction with a butyl-based adhesive and is independently tested to BS EN 28510-1 1993. Classi Seal uses a flexible waterproof membrane with a pressure-sensitive self-adhesive backing and accommodates up to 15mm of movement. Both create a secondary waterproof barrier behind the tiles. If you are unsure which is right for your installation, call us on 01603 381095. What is butyl adhesive and why is it used? Butyl adhesive is a synthetic rubber-based adhesive known for its excellent waterproofing properties, flexibility, and long-term bond strength. It remains flexible after curing, making it well suited to applications where movement is expected — such as the junction between a shower tray and a wall. The integrated butyl strip on Flexi-Seal provides a secure, permanent bond without the need for separate adhesive. What does BS EN 28510-1 1993 mean? BS EN 28510-1 1993 is the British and European standard for pressure-sensitive adhesive tapes, covering adhesive strength, performance under stress, and waterproof integrity. Independent testing to this standard confirms that Flexi-Seal’s adhesive and waterproofing performance meets recognised quality benchmarks — important for professional installations and building regulations compliance. Can Flexi-Seal be used on worktops? Yes — Flexi-Seal is suitable for bathroom vanity units, countertops, and worktops as well as shower trays and baths. The 2.0m length is particularly well suited to worktop sealing where shorter runs are typically required. What type of silicone should I use at the base edge? Always use neutral cure silicone (not acetic/vinegar cure). Acetic cure silicone releases acetic acid during curing which can damage rubber and adhesive materials. Neutral cure silicone is widely available and is the correct choice for use with rubber waterproofing strips and most bathroom materials. 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.

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Classi Seal Waterproofing Strip — 3.2m Pre-Cut — Self-Adhesive — Shower Trays & Baths The Classi Seal 3.2m Waterproofing Strip is a professional self-adhesive tanking strip designed to create a reliable secondary waterproof seal between shower trays or baths and bathroom walls. The pre-cut 3.2m length is specifically sized to cover a standard UK shower tray or bath on three sides with minimal waste. Applied before installation, the flexible membrane accommodates up to 15mm of building movement and allows immediate tiling — no curing wait required. Provides far superior long-term protection compared to silicone sealant alone. ✅ Pre-cut 3.2m — ready to use. Covers a standard shower tray or bath on 3 sides (approx. 2 × 900mm sides + 1 × 700–800mm end = ~2.5–2.6m used, with trim allowance). For non-standard lengths or multiple bathrooms, see the Classi Seal per-metre option (CS025). Key Features 3.2m pre-cut length — sized for standard shower tray or bath on 3 sides; no measuring or cutting from a roll Self-adhesive backing — pressure-sensitive; quick, clean installation 15mm movement accommodation — flexes with building settlement without compromising the seal Tile immediately — no curing time required after application Superior to silicone alone — creates a waterproof membrane behind the tiles Flexible strip — conforms to shower tray and bath edges Technical Specification Brand: Classi SKU: CS032 EAN: 5060062840094 Type: Self-adhesive flexible waterproofing tanking strip Length: 3.2 metres (pre-cut) Width: 100–120mm (upstand + base) Weight: 0.5kg Movement accommodation: Up to 15mm Adhesive: Pressure-sensitive self-adhesive backing Material: Flexible waterproof membrane Application temperature: 5°C to 35°C Suitable surfaces: Clean, dry, dust-free Coverage: Standard shower tray or bath — 3 sides Finish: Tile over upstand; seal base with neutral cure silicone How It Works Prepare: Ensure tray or bath edges are clean, dry, and dust-free Apply: Remove backing and press Classi Seal firmly to the wall-facing edges of the tray or bath Position: Install the tray or bath — the upstand extends up the wall Tile: Apply tiles over the upstand immediately — no curing wait Seal: Apply neutral cure silicone to the bottom edge once tiling is complete What’s Included Classi Seal 3.2m pre-cut waterproofing strip Suitable For Standard shower tray to wall junctions — 3 sides Standard bath to wall junctions — 3 sides Wet room former edges (shorter runs) Bathroom renovations and new builds Commercial bathrooms — hotels, gyms, care facilities Also Available Classi Seal Per Metre (CS025) — cut to your exact length from a 25m roll; ideal for non-standard sizes or multiple bathrooms Flexi Seal 2.0m Waterproofing Strip — alternative supplier; shorter pre-cut length for smaller installations Flexi-Seal 4.0m Waterproofing Strip — alternative supplier; longer pre-cut length for larger baths and shower trays Shower Trays — browse compatible flat and low profile trays Shower Enclosures — complete your shower installation Frequently Asked Questions Will 3.2m cover my shower tray or bath? The 3.2m length is designed to cover a standard UK shower tray or bath on three sides — typically two long sides at approximately 900mm each and one short end at 700–800mm, totalling around 2.5–2.6m, leaving a comfortable trim allowance. For larger trays, non-standard sizes, or 4-sided installations, the per-metre option (CS025) allows you to order exactly the length you need. For larger baths and shower trays, see the Flexi-Seal 4.0m strip. Why use a tanking strip instead of silicone alone? Silicone sealant is the first line of defence but has limitations — building movement, settlement, and thermal expansion can cause silicone to crack or separate over time. Classi Seal provides a critical secondary barrier: a flexible waterproof membrane behind the tiles that accommodates up to 15mm of movement without failing. Even if the silicone joint cracks, the tanking strip prevents water from reaching the substrate. This dual-layer approach is considered best practice by professional bathroom installers and helps meet UK Building Regulations Part C requirements for wet areas. Can I tile immediately after applying Classi Seal? Yes — no curing time is required. Once the strip is applied and the tray or bath is positioned, you can tile over the upstand immediately. The base edge should be sealed with neutral cure silicone once tiling is complete. What type of silicone should I use? Always use neutral cure silicone (not acetic/vinegar cure). Acetic cure silicone releases acetic acid during curing which can damage the adhesive and membrane. Neutral cure silicone is widely available and is the correct choice for use with tanking strips and most bathroom materials. What is the difference between this and the per-metre version? This product (CS032) is a pre-cut 3.2m length — convenient for a single standard shower tray or bath installation with no measuring required. The per-metre version (CS025) is cut to your exact requirements from a 25m roll — ideal for non-standard lengths, larger enclosures, wet room perimeters, or multiple bathrooms where you want to order a specific total length. Is professional installation required? Classi Seal is suitable for professional bathroom fitters and competent DIY enthusiasts. Correct application is important to ensure a watertight seal — apply to clean, dry, dust-free surfaces at temperatures between 5°C and 35°C, and press firmly along the entire length. Always use neutral cure silicone for the base seal. 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.

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Classi Seal Waterproofing Strip — Sold Per Metre — Self-Adhesive — 15mm Movement The Classi Seal Waterproofing Strip is a professional self-adhesive tanking strip designed to create a reliable secondary waterproof seal between shower trays or baths and bathroom walls. Applied before installation, it creates a flexible membrane behind the tiles that accommodates up to 15mm of building movement — providing far superior long-term protection compared to silicone sealant alone. Sold per metre, cut fresh from a 25m roll, so you order exactly what you need with no waste. 📏 Sold per metre — enter the quantity in metres at checkout.Quantity 3 = 3 metres (£36) · Quantity 5 = 5 metres (£60) · Quantity 10 = 10 metres (£120)How much do you need? Standard shower tray or bath (3 sides): approx. 3–3.5m · Large enclosure: 4–5m · Add 10% for trimming. Key Features Sold per metre — cut to your exact length from a 25m roll; no waste Self-adhesive backing — pressure-sensitive; quick, clean installation 15mm movement accommodation — flexes with building settlement without compromising the seal Tile immediately — no curing time required after application Superior to silicone alone — creates a waterproof membrane behind the tiles Flexible strip — conforms to shower tray and bath edges Technical Specification Brand: Classi SKU: CS025 Type: Self-adhesive flexible waterproofing tanking strip Sold: Per metre (cut from 25m roll) Width: 100–120mm (upstand + base) Weight: 0.15kg per metre Movement accommodation: Up to 15mm Adhesive: Pressure-sensitive self-adhesive backing Material: Flexible waterproof membrane Application temperature: 5°C to 35°C Suitable surfaces: Clean, dry, dust-free Finish: Tile over upstand; seal base with neutral cure silicone Maximum roll length: 25 metres How It Works Prepare: Ensure tray or bath edges are clean, dry, and dust-free Apply: Remove backing and press Classi Seal firmly to the wall-facing edges of the tray or bath Position: Install the tray or bath — the upstand extends up the wall Tile: Apply tiles over the upstand immediately — no curing wait Seal: Apply neutral cure silicone to the bottom edge once tiling is complete Suitable For Shower tray to wall junctions — typically 3–3.5m for a standard 3-sided installation Bath to wall junctions — typically 3–3.5m for a standard 3-sided installation Wet room former edges — measure perimeter and add 10% for trimming. Large shower enclosures — typically 4–5m Commercial bathrooms — hotels, gyms, care facilities Multiple projects — order longer lengths to cover several bathrooms Also Available Browse all waterproofing & tanking products Shower Trays — browse compatible flat and low profile trays Frequently Asked Questions How do I order the right length? Enter the number of metres you need as the quantity at checkout. For example, quantity 3 = 3 metres (£36), quantity 5 = 5 metres (£60). We cut your exact length fresh from a 25m roll. As a guide: a standard shower tray or bath on 3 sides requires approximately 3–3.5 metres. Add 10% for trimming. If in doubt, order slightly more — offcuts can be used for future repairs or smaller projects. Why use a tanking strip instead of silicone alone? Silicone sealant is the first line of defence but has limitations — building movement, settlement, and thermal expansion can cause silicone to crack or separate over time. Classi Seal provides a critical secondary barrier: a flexible waterproof membrane behind the tiles that accommodates up to 15mm of movement without failing. Even if the silicone joint cracks, the tanking strip prevents water from reaching the substrate. This dual-layer approach is considered best practice by professional bathroom installers and helps meet UK Building Regulations Part C requirements for wet areas. Can I tile immediately after applying Classi Seal? Yes — one of the key advantages of Classi Seal is that no curing time is required. Once the strip is applied and the tray or bath is positioned, you can tile over the upstand immediately. The base edge should be sealed with neutral cure silicone once tiling is complete. What type of silicone should I use with Classi Seal? Always use neutral cure silicone (not acetic/vinegar cure). Acetic cure silicone releases acetic acid during curing, which can damage the adhesive and membrane of the strip. Neutral cure silicone is widely available and is the correct choice for use with tanking strips and most bathroom materials. What surfaces is Classi Seal suitable for? Classi Seal is suitable for clean, dry, dust-free surfaces. Ensure the edges of the shower tray or bath are free from grease, dust, and moisture before application. Apply in temperatures between 5°C and 35°C for best adhesion. Is there a pre-cut version available? Yes — if you need a standard length for a single installation, a pre-cut 3.2m version is also available. The per-metre option (this product) is ideal when you need a specific custom length, are completing multiple bathrooms, or want to avoid waste from a pre-cut length that may not suit your installation. 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.

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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 Shower Trays — browse compatible flat shower trays Shower Enclosures — complete your shower installation Shower Valves & Accessories — valves, heads, and arms 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.

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