--- product_id: 128252400 title: "Polar Felt Seal Waterproof Roof Sealant, 500ml, Black" brand: "polar specialist coatings" price: "¥8713" currency: JPY in_stock: true category: "Polar Specialist Coatings" url: https://www.desertcart.jp/products/128252400-polar-felt-seal-waterproof-roof-sealant-500ml-black store_origin: JP region: Japan --- # Instant waterproof barrier All-weather durability One-coat easy application Polar Felt Seal Waterproof Roof Sealant, 500ml, Black **Brand:** polar specialist coatings **Price:** ¥8713 **Availability:** ✅ In Stock ## Summary > 💪 Seal it once, forget it forever! ## Quick Answers - **What is this?** Polar Felt Seal Waterproof Roof Sealant, 500ml, Black by polar specialist coatings - **How much does it cost?** ¥8713 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/128252400-polar-felt-seal-waterproof-roof-sealant-500ml-black) ## Best For - polar specialist coatings enthusiasts ## Why This Product - Trusted polar specialist coatings brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **One-Coat Wonder:** Covers up to 0.5m² with a single coat—minimal effort, maximum protection. - • **No Primer, No Fuss:** Apply directly with brush or roller—touch dry in just 3-4 hours for quick turnaround. - • **Weatherproof Shield:** Formulated to withstand rain, wind, and temperature swings without cracking or peeling. - • **Seals Leaks Instantly:** Creates a durable, waterproof membrane on contact to stop leaks fast. - • **Versatile Surface Compatibility:** Works seamlessly on felt, metal, concrete, brick, and more for all your repair needs. ## Overview Polar Felt Seal Waterproof Roof Sealant is a solvent-based acrylic liquid rubber designed for fast, one-coat waterproof repairs on felt roofs, garages, sheds, and multiple other surfaces. Its durable, weather-resistant formula creates an immediate barrier against leaks and cracks without the need for primer, drying touch-ready in 3-4 hours and covering up to 0.5m² per 500ml. ## Description Free delivery and returns on all eligible orders. Shop Polar Felt Seal Waterproof Roof Sealant, 500ml, Black | One-Coat Liquid Rubber Waterproof Sealant, Shed and Garage Felt Roofs, Leak and Crack Repair, No Primer Needed. ## Features - Flammable liquid and vapour. - May cause drowsiness or dizziness. - May cause respiratory irritation. - Toxic to aquatic life with long lasting effects. - Waterproof Seal: This felt sealant is your solution for leaks or cracks. It forms an immediate waterproof barrier. Suitable for shed roofs and garage roofs, creating a durable membrane that keeps out damp and water - Instant Protection: Formulated for tough, hard-wearing protection, this felt roof sealant is suitable for urgent repairs. It provides lasting protection for cracked surfaces and performs well in all weather conditions - Multi-Surface Compatibility: Solution for waterproofing felt roofs on sheds, garages, or caravans. Formulated for performance on flat or pitched roofs. The sealant can also be used on drainpipes, gutters, asphalt, metal, brick, and concrete for strong protection - One-Coat Repair: Polar FeltSeal delivers a fix with just one coat, getting your felt roof patch repair done with minimal effort. 500ml covers up to 0.5m², 1 Litre up to 1m², and 2.5 Litres up to 2.5m², ensuring coverage exactly where it is needed - Easy Application: No primer is needed before applying Polar FeltSeal. Simply apply directly for waterproof protection. Use a brush or roller for application. It will be touch dry within 3-4 hours. Clean the area of moss and debris beforehand ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07PWXV93R | | Best Sellers Rank | 6,508 in DIY & Tools ( See Top 100 in DIY & Tools ) 173 in Sealers | | Brand | Polar Specialist Coatings | | Colour | Black | | Compatible Material | Aluminium, Metal | | Customer Reviews | 4.4 4.4 out of 5 stars (1,862) | | Included Components | Spray | | Item Dimensions | 11 x 10 x 11 centimetres | | Item Form | Liquid | | Item Highlight | One-Coat Liquid Rubber Waterproof Sealant, Shed and Garage Felt Roofs, Leak and Crack Repair, No Primer Needed | | Item Weight | 600 Grams | | Manufacturer | Polar Specialist Coatings | | Manufacturer Part Number | 4000057-FBA | | Material | Solvent-Based Acrylic | | Model Number | 4000057-FBA | | Number of Items | 1 | | Number of Packs | 1 | | Style Name | Feltseal | | Surface Recommendation | Concrete, Brickwork, GRP and Fibreglass, Felt and Metal (Galvanised and Ferrous) | | Unit Count | 500.0 millilitre | | Water Resistance Level | Waterproof | ## Product Details - **Brand:** Polar Specialist Coatings - **Item dimensions L x W x H:** 11 x 10 x 11 centimetres - **Item weight:** 600 Grams - **Material:** Solvent-Based Acrylic - **Style:** Feltseal ## Images ![Polar Felt Seal Waterproof Roof Sealant, 500ml, Black - Image 1](https://m.media-amazon.com/images/I/715qJckHPPL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: If I paint this over the nails in the felt will it seal it and stop it raining it** A: Yes it will work. Put plenty on to plug the gaps/holes **Q: Does it change the texture?** A: No. This paint has a subtle lightly textured finish coat not unlike asphalt roofing felt. It’s darker but the texture is effectively the same. **Q: Can you paint it on polycarbonate sheets** A: I don’t see any reason not to use as long as the polycarbonate sheets are stable. **Q: Is it possible to be used as water proofing for floor of bathrooms before tiles** A: i do not see why not i used on a garage roof in 2021 and it is sill o.k !!! ## Frequently Bought Together - Polar Premium Black Felt Seal - 500ml - Instant Waterproof Roof Sealant - Ideal for Flat or Pitched Felt, Shed & Garage Roofs - Easy to Apply - Polar Premium Black Tapeseal - 4'' x 5ft - Instant Waterproof Seal - Interior & Exterior - Ideal for Doors, Windows, Roofs, Gutters & Pipes - Adhesive & Flexible Leak Repair Tape - Standard Grade Shed Roofing Felt Black Mineral 16.4 x 3.2ft (5m x 1m) with 13mm Galvanized Roofing Nails Pack of 50 Included | Heavy Duty Premium Roof Felt --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/128252400-polar-felt-seal-waterproof-roof-sealant-500ml-black](https://www.desertcart.jp/products/128252400-polar-felt-seal-waterproof-roof-sealant-500ml-black) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-10-12*