---
product_id: 18031091
title: "Dicor 501LST-1 HAPS-Free Self-Leveling Lap Sealant for Horizontal Surfaces - 10.3 Oz, Tan, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application"
brand: "dicor"
price: "€ 37.36"
currency: EUR
in_stock: true
reviews_count: 13
category: "Dicor"
url: https://www.desertcart.hr/products/18031091-dicor-501lst-1-haps-free-self-leveling-lap-sealant-horizontal
store_origin: HR
region: Croatia
---

# Adheres to EPDM, TPO, PVC & multiple surfaces Sun-ray stabilized for UV resistance Self-leveling for flawless horizontal application Dicor 501LST-1 HAPS-Free Self-Leveling Lap Sealant for Horizontal Surfaces - 10.3 Oz, Tan, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application

**Brand:** dicor
**Price:** € 37.36
**Availability:** ✅ In Stock

## Summary

> 🛡️ Seal your RV’s future with confidence — the ultimate lap sealant for pros who demand perfection!

## Quick Answers

- **What is this?** Dicor 501LST-1 HAPS-Free Self-Leveling Lap Sealant for Horizontal Surfaces - 10.3 Oz, Tan, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application by dicor
- **How much does it cost?** € 37.36 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/18031091-dicor-501lst-1-haps-free-self-leveling-lap-sealant-horizontal)

## 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

- • **Invisible Yet Stylish:** Tan hue blends perfectly with RV roofs, providing a clean, color-matched seal that won’t stain or discolor.
- • **Effortless Application:** Self-leveling consistency ensures a smooth, professional finish on horizontal surfaces without the hassle.
- • **HAPS-Free & Waterproof:** Safe for you and the environment while delivering a watertight, flexible seal that stands up to the elements.
- • **UV-Protected Durability:** Sun-ray stabilized formula blocks wear and discoloration, keeping your RV roof looking pristine season after season.
- • **Universal Compatibility:** Seamlessly bonds with EPDM, TPO, PVC membranes plus aluminum, wood, vinyl, and more for versatile repairs.

## Overview

Dicor 501LST-1 is a 10.3 oz tan, self-leveling lap sealant designed for horizontal RV roofing surfaces. It offers superior adhesion to EPDM, TPO, PVC membranes and various materials like aluminum and wood. Sun-ray stabilized to resist UV damage and discoloration, this HAPS-free formula creates a flexible, waterproof seal that maintains your RV’s integrity and style.

## 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 resist discoloration and wear and will not stain or discolor any material to which it is applied. HAPS-free.

Review: Works well on trailer roofs - This is a good product. We have a lot of client's in a vacation park. Their park model trailers take a beating all winter and then get cooked in the sun all summer. This is the best sealant I've found for tpo and rubber roof that trailers have. It is easy to apply and makes a nice solid patch.
Review: The Only Lap Sealant I Use! - I have tried a couple of other brands of lap sealant, and the results were simply not good. I recently installed an additional solar panel on my RV. I used a cheaper brand to save a few dollars, huge mistake! So, I decided to order Dicor and used it to finish the project and cover the other brand. The Dicor flows smoothly, it adheres great and the leveling is superb. It makes the project looks so much more professional, and I trust that it will do its job to seal and protect from leaks, etc. No more trying other brands, Dicor is the only lap sealant I will use in the future.

## Features

- RV ROOFING USE: Lap sealant is sun-ray stabilized to block wear and discoloration; Plus, it will not stain or discolor any roofing material to which it is applied
- COLOR: Tan 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. tube
- 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 | B00HJ6Y05O |
| Best Sellers Rank | #244 in Automotive ( See Top 100 in Automotive ) #1 in RV Sealants |
| Brand | Dicor |
| Brand Name | Dicor |
| Color | Tan |
| Compatible Material | Aluminum, Concrete, Fiberglass, Metal, Vinyl |
| Customer Reviews | 4.7 out of 5 stars 23,560 Reviews |
| Global Trade Identification Number | 00677917008131 |
| Included Components | Dicor 501LST-1 Self-Leveling HAPS-Free Lap Sealant |
| Item Dimensions | 11.5 x 2 x 2 inches |
| Item Form | Liquid |
| Item Type Name | 501LST |
| Item Weight | 10.3 Ounces |
| Item dimensions L x W x H | 11.5 x 2 x 2 inches |
| Manufacturer | Dicor |
| Material | Polyvinyl Chloride |
| Material Type | Polyvinyl Chloride |
| Model | 501LST-1 |
| Number of Items | 1 |
| Part Number | 501LST-1 |
| Style | Self-Leveling |
| Style Name | Self-Leveling |
| Surface Recommendation | Roof,Vent |
| UPC | 677917008131 |
| Unit Count | 1.0 Count |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Dicor
- **Item Weight:** 10.3 Ounces
- **Item dimensions L x W x H:** 11.5 x 2 x 2 inches
- **Material:** Polyvinyl Chloride
- **Style:** Self-Leveling

## Images

![Dicor 501LST-1 HAPS-Free Self-Leveling Lap Sealant for Horizontal Surfaces - 10.3 Oz, Tan, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application - Image 1](https://m.media-amazon.com/images/I/718B4nqX9CL.jpg)
![Dicor 501LST-1 HAPS-Free Self-Leveling Lap Sealant for Horizontal Surfaces - 10.3 Oz, Tan, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application - Image 2](https://m.media-amazon.com/images/I/71ugSvZc3vL.jpg)
![Dicor 501LST-1 HAPS-Free Self-Leveling Lap Sealant for Horizontal Surfaces - 10.3 Oz, Tan, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application - Image 3](https://m.media-amazon.com/images/I/71HlN+IQXCL.jpg)
![Dicor 501LST-1 HAPS-Free Self-Leveling Lap Sealant for Horizontal Surfaces - 10.3 Oz, Tan, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application - Image 4](https://m.media-amazon.com/images/I/71XneagC0rL.jpg)
![Dicor 501LST-1 HAPS-Free Self-Leveling Lap Sealant for Horizontal Surfaces - 10.3 Oz, Tan, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application - Image 5](https://m.media-amazon.com/images/I/81uMLIo9lIL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works well on trailer roofs
*by J***I on April 15, 2026*

This is a good product. We have a lot of client's in a vacation park. Their park model trailers take a beating all winter and then get cooked in the sun all summer. This is the best sealant I've found for tpo and rubber roof that trailers have. It is easy to apply and makes a nice solid patch.

### ⭐⭐⭐⭐⭐ The Only Lap Sealant I Use!
*by D***W on April 22, 2026*

I have tried a couple of other brands of lap sealant, and the results were simply not good. I recently installed an additional solar panel on my RV. I used a cheaper brand to save a few dollars, huge mistake! So, I decided to order Dicor and used it to finish the project and cover the other brand. The Dicor flows smoothly, it adheres great and the leveling is superb. It makes the project looks so much more professional, and I trust that it will do its job to seal and protect from leaks, etc. No more trying other brands, Dicor is the only lap sealant I will use in the future.

### ⭐⭐⭐⭐⭐ Great product
*by E***Y on March 27, 2026*

Works excellent for rv roof. Levels nicely and creates a flexible water tight seal perfect for covering screws and going around objects like the antenna and satellite or anything else that would make using sealing tape a pain in the rear. Have used it many times and will continue to use it when needed.

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**Shop now:** [https://www.desertcart.hr/products/18031091-dicor-501lst-1-haps-free-self-leveling-lap-sealant-horizontal](https://www.desertcart.hr/products/18031091-dicor-501lst-1-haps-free-self-leveling-lap-sealant-horizontal)

---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-05-25*