---
product_id: 266331467
title: "Dicor 501LSW-25 25 Tubes HAPS-Free Self-Leveling Lap Sealant for Horizontal Surfaces - 25 Pack - 10.3 Oz, White, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application"
brand: "dicor"
price: "¥105405"
currency: JPY
in_stock: true
reviews_count: 13
category: "Dicor"
url: https://www.desertcart.jp/products/266331467-dicor-501lsw-25-25-tubes-haps-free-self-leveling-lap
store_origin: JP
region: Japan
---

# 25-pack of 10.3 oz tubes for long-lasting coverage Sun-ray stabilized for UV protection Self-leveling for flawless horizontal application Dicor 501LSW-25 25 Tubes HAPS-Free Self-Leveling Lap Sealant for Horizontal Surfaces - 25 Pack - 10.3 Oz, White, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application

**Brand:** dicor
**Price:** ¥105405
**Availability:** ✅ In Stock

## Summary

> 🛡️ Seal smart, stay leak-free — the ultimate RV roof guardian!

## Quick Answers

- **What is this?** Dicor 501LSW-25 25 Tubes HAPS-Free Self-Leveling Lap Sealant for Horizontal Surfaces - 25 Pack - 10.3 Oz, White, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application by dicor
- **How much does it cost?** ¥105405 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/266331467-dicor-501lsw-25-25-tubes-haps-free-self-leveling-lap)

## Best For

- dicor enthusiasts

## Why This Product

- Trusted dicor brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Bulk Value Pack:** 25 tubes of 10.3 oz each provide ample supply for extensive RV roofing, maintenance, and repair projects—never run out mid-job.
- • **Effortless Application:** Self-leveling consistency ensures a smooth, professional finish on horizontal surfaces without the hassle or mess.
- • **HAPS-Free & Waterproof:** Safe, environmentally friendly formula that creates a flexible, watertight seal to protect your investment from leaks and weather damage.
- • **UV-Protected Durability:** Sun-ray stabilized formula prevents discoloration and material degradation, keeping your RV roof pristine season after season.
- • **Versatile Compatibility:** Adheres securely to EPDM, TPO, PVC membranes, aluminum, wood, vinyl, galvanized metal, fiberglass, mortar, and concrete.

## Overview

Dicor 501LSW-25 is a premium, sun-ray stabilized, self-leveling lap sealant designed specifically for horizontal RV roofing surfaces. This 25-pack of 10.3 oz tubes offers excellent adhesion to a wide range of materials including EPDM, TPO, PVC, aluminum, and more. Its HAPS-free, waterproof formula ensures a durable, flexible, and stain-free seal that protects against leaks and UV damage, making it the go-to choice for professional-grade RV maintenance and repair.

## Description

Dicor’s Self-Leveling Lap Sealant creates a watertight seal along a roof's edges, air vents, vent pipes, and screw heads. This lap sealant is a versatile sealant formulated for EPDM roofing but also compatible with most other roofing material, including Dicor DiFlex II, Tufflex PVC, and BriTEK TPO roofing. It offers excellent adhesion to aluminum, mortar, wood, vinyl, galvanized metal and concrete. Continuously seals and remains flexible. Color matched, our lap sealants are sun-ray stabilized to stop discoloration and decline and will not stain or discolor any material to which it is applied. HAPS-free.

Review: Don't try and find the leak just do the roof you'll be glad you did. - This is the best product for the job on the planet. With the possible exception of sitting in it only to realize that while in the kitchen on a fabric seat. The old version from 1993 was easy to remove same product and in need of a renewal due to some internal rotting of the actual seal product. It's worth digging it all off it comes up with relative ease a little alcohol wipe down and get ready to put a nice bead on each side with a whipped bead in between so you get a broad self-leveling inch Plus wide bead and you'll sleep at night and worry about other things.
Review: Sealed top of our RV very well - This sealant package for the top of our RV is super good. Worked well and easy to use. Good price.

## Features

- RV ROOFING USE: Lap sealant is sun-ray stabilized to stop decline and discoloration; Plus, it will not stain or discolor any roofing material to which it is applied
- COLOR: White hue for stylish and beautiful RV roof
- EASY TO USE: Self-leveling for smooth application to RV roofing on horizontal surfaces
- SIZE: 10.3 oz. tubes; Pack of 25
- COMPATIBILITY: Works with EPDM, TPO and PVC membranes, it adheres firmly to aluminum, mortar, wood, vinyl, galvanized metal, fiberglass, and concrete

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B087VL5KQV |
| Best Sellers Rank | #15,775 in Automotive ( See Top 100 in Automotive ) #43 in RV Sealants |
| Brand | Dicor |
| Brand Name | Dicor |
| Color | White |
| Compatible Material | Alu |
| Customer Reviews | 4.6 out of 5 stars 130 Reviews |
| Included Components | Dicor 501LSW-25 Self-Leveling Lap Sealant - 10.3 oz., White (Pack of 25) |
| Item Dimensions | 12 x 10.5 x 10.5 inches |
| Item Form | Liquid |
| Item Type Name | Lap Sealant for RV Roofing and Appliance Application |
| Item Weight | 10.3 ounces |
| Item dimensions L x W x H | 12 x 10.5 x 10.5 inches |
| Manufacturer | Dicor |
| Material | Polyvinyl Chloride |
| Material Type | Polyvinyl Chloride |
| Model | 501LSW-25 |
| Number of Items | 1 |
| Number of Packs | 25 |
| Part Number | 501LSW-25 |
| Style | Self-Leveling |
| Style Name | Self-Leveling |
| Surface Recommendation | Roof |
| UPC | 677917011469 |
| Unit Count | 1 Count |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Dicor
- **Item Weight:** 10.3 ounces
- **Item dimensions L x W x H:** 12 x 10.5 x 10.5 inches
- **Material:** Polyvinyl Chloride
- **Style:** Self-Leveling

## Images

![Dicor 501LSW-25 25 Tubes HAPS-Free Self-Leveling Lap Sealant for Horizontal Surfaces - 25 Pack - 10.3 Oz, White, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application - Image 1](https://m.media-amazon.com/images/I/81rViat2N0L.jpg)
![Dicor 501LSW-25 25 Tubes HAPS-Free Self-Leveling Lap Sealant for Horizontal Surfaces - 25 Pack - 10.3 Oz, White, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application - Image 2](https://m.media-amazon.com/images/I/81llxo+hY2L.jpg)
![Dicor 501LSW-25 25 Tubes HAPS-Free Self-Leveling Lap Sealant for Horizontal Surfaces - 25 Pack - 10.3 Oz, White, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application - Image 3](https://m.media-amazon.com/images/I/71L-miU+c-L.jpg)
![Dicor 501LSW-25 25 Tubes HAPS-Free Self-Leveling Lap Sealant for Horizontal Surfaces - 25 Pack - 10.3 Oz, White, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application - Image 4](https://m.media-amazon.com/images/I/71A9yJ-8IcL.jpg)
![Dicor 501LSW-25 25 Tubes HAPS-Free Self-Leveling Lap Sealant for Horizontal Surfaces - 25 Pack - 10.3 Oz, White, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application - Image 5](https://m.media-amazon.com/images/I/71KA2810TWL.jpg)

## Available Options

This product comes in different **Color, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Don't try and find the leak just do the roof you'll be glad you did.
*by P***0 on April 6, 2026*

This is the best product for the job on the planet. With the possible exception of sitting in it only to realize that while in the kitchen on a fabric seat. The old version from 1993 was easy to remove same product and in need of a renewal due to some internal rotting of the actual seal product. It's worth digging it all off it comes up with relative ease a little alcohol wipe down and get ready to put a nice bead on each side with a whipped bead in between so you get a broad self-leveling inch Plus wide bead and you'll sleep at night and worry about other things.

### ⭐⭐⭐⭐⭐ Sealed top of our RV very well
*by R***L on March 5, 2026*

This sealant package for the top of our RV is super good. Worked well and easy to use. Good price.

### ⭐⭐⭐⭐⭐ Dicor to the rescue for our RV roof
*by C***H on May 19, 2026*

My RV tech said that our Sprinter RV roof sealant was getting long in the tooth (2017 model) and I was quoted over $1,400 for them to do the work. I've always heard great things about Dicors products in the RV forums. I purchased a case of their self-leveling lap sealant. After watching a couple of how to videos on Dicors website I was ready to tackle this project. Very easy to apply and being a rookie I was impressed at the drying time (though it takes 30 days to cure), but after an hour it seemed dry to the touch. The hardest part of the whole project was getting onto the RV roof...

## Frequently Bought Together

- Dicor 501LSW-25 25 Tubes HAPS-Free Self-Leveling Lap Sealant for Horizontal Surfaces - 25 Pack - 10.3 Oz, White, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application
- Dicor 551LSW-1 HAPS-Free NON-Leveling Lap Sealant - 10.3 Oz, White, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application
- 4 Pack White Butyl Sealant Tape, 1/8" x 3/4" x 30 ft, RV Window Sealant, Roof Caulk, EPDM Rubber Patching

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---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-08-24*