---
product_id: 345836356
title: "Dap 18021 Concrete and Mortar Watertight Filler and Sealant - Gray 10.1-oz Cartridge (18096). Sold as 3 Pack"
brand: "dap"
price: "€ 124.30"
currency: EUR
in_stock: true
url: https://www.desertcart.gr/products/345836356-dap-18021-concrete-and-mortar-watertight-filler-and-sealant-gray
store_origin: GR
region: Greece
---

# Interior & exterior durable use Silicone-enhanced water resistance 10.1 oz high-performance latex sealant Dap 18021 Concrete and Mortar Watertight Filler and Sealant - Gray 10.1-oz Cartridge (18096). Sold as 3 Pack

**Brand:** dap
**Price:** € 124.30
**Availability:** ✅ In Stock

## Summary

> 🔧 Seal it, protect it, own it — the ultimate watertight fix!

## Quick Answers

- **What is this?** Dap 18021 Concrete and Mortar Watertight Filler and Sealant - Gray 10.1-oz Cartridge (18096). Sold as 3 Pack by dap
- **How much does it cost?** € 124.30 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/345836356-dap-18021-concrete-and-mortar-watertight-filler-and-sealant-gray)

## Best For

- dap enthusiasts

## Why This Product

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

## Key Features

- • **Effortless Finish:** Paintable surface lets you customize without hassle.
- • **Clean & Convenient:** Water cleanup means no toxic mess, just smooth results.
- • **Weatherproof Wonder:** Silicone additives boost adhesion and ensure superior waterproof protection.
- • **Seal with Confidence:** High-performance latex formula repairs cracks and holes seamlessly.
- • **Versatile Application:** Perfect for concrete, mortar, and masonry—inside or out.

## Overview

DAP 18021 is a premium gray, latex-based concrete and mortar filler and sealant in a 10.1 oz cartridge, sold as a convenient 3-pack. Enhanced with silicone for superior adhesion and waterproofing, it’s designed for durable interior and exterior repairs on concrete, mortar, and masonry surfaces. Paintable and easy to clean with water, this American-made sealant delivers professional-grade results for lasting protection.

## Description



## Features

- Gray Concrete and Mortar Filler and Sealant 10.1 oz
- High performance, latex-based sealant.
- Formulated to repair cracks and holes in concrete, mortar and masonry.
- Contains silicone additives for improved adhesion and water resistance.
- Interior/exterior use. Paintable. Water clean-up.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Silicone |
| Brand | DAP |
| Style | Compact |
| Item Weight | 10.1 Ounces |
| Item dimensions L x W x H | 21 x 15.9 x 30.5 Centimeters |
| Water Resistance Level | Waterproof |
| Item Form | Liquid |
| Net Quantity | 30.3 Milliliters |
| Number of Items | 3 |
| Colour | Gray |
| Surface Recommendation | Concrete |
| Manufacturer | Dap Incorporated |
| Country of Origin | USA |
| Model number | 18021 |
| Item Weight | 286 g |
| Product Dimensions | 20.96 x 15.88 x 30.48 cm; 286.33 g |
| Item model number | 18021 |
| Item Height | 12 Inches |
| Item Width | 6.25 Inches |
| Are batteries included? | No |

## Product Details

- **Material:** Silicone
- **Brand:** DAP
- **Style:** Compact
- **Item Weight:** 10.1 Ounces
- **Item dimensions L x W x H:** 21 x 15.9 x 30.5 Centimeters

## Images

![Dap 18021 Concrete and Mortar Watertight Filler and Sealant - Gray 10.1-oz Cartridge (18096). Sold as 3 Pack - Image 1](https://m.media-amazon.com/images/I/81VrAUFmhSL.jpg)

## Available Options

This product comes in different **Item Package Quantity** options.

## Questions & Answers

**Q: Anyone used this on brick walls horizontal & vertical to repair mortar preventing water penetration due to cracked mortar?**
A: Yes.  For me has worked with cracks in our bricks.  Works well with other types  of concrete.  Have used it for Pavers  up against the house.

**Q: Can this be used as a caulk between the concrete patio and house concrete foundation to keep water away?**
A: Exactly what I used it for and the color match was decent enough not to look to bad. Have image will try and load somewhere, since they won’t allow you to here.

**Q: We have a 5" narrow crack in the cement basement floor that slowly, but continuously, seeps water. Can we still use this product?**
A: Wrong product. This is when you want the crack filler (available in quart bottle). You want to squeeze as much into the crack as possible. That said, given that it's continuously seeping water, you have hydrostatic pressure on the other side of that floor, and you need to deal with that or you will never have a permanent solution. This involves things like french drains and sump pumps. It is very common when water is flowing underground by your house.

**Q: Can I use it to fill/repair the gap around the toilet flange?**
A: I am not sure if this would work for filling gap at toilet flange.  I used it to seal cracks in patio.

## Frequently Bought Together

- Dap 18021 Concrete and Mortar Watertight Filler and Sealant - Gray 10.1-oz Cartridge (18096). Sold as 3 Pack
- Bates- Caulking Silicone Gun, 10:1 Thrust Ratio, Hand Caulking Guns, No Drip
- GE All Purpose Silicone Caulk - 100% Waterproof Silicone Sealant, Stronger Adhesion, Freeze & Sun Proof - 10 oz Cartridge, Clear, Pack of 1

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**Shop now:** [https://www.desertcart.gr/products/345836356-dap-18021-concrete-and-mortar-watertight-filler-and-sealant-gray](https://www.desertcart.gr/products/345836356-dap-18021-concrete-and-mortar-watertight-filler-and-sealant-gray)

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-01-25*