---
product_id: 97309845
title: "Masonry Waterproof Clear 5g (DRYLOK - 20915)"
brand: "drylok"
price: "¥151154"
currency: JPY
in_stock: true
reviews_count: 5
category: "Drylok"
url: https://www.desertcart.jp/products/97309845-masonry-waterproof-clear-5g-drylok-20915
store_origin: JP
region: Japan
---

# clear high-gloss finish covers ~350 sq ft per 5 gal (3 coats) 3-coat waterproof barrier Masonry Waterproof Clear 5g (DRYLOK - 20915)

**Brand:** drylok
**Price:** ¥151154
**Availability:** ✅ In Stock

## Summary

> 💧 Seal in confidence, not just moisture!

## Quick Answers

- **What is this?** Masonry Waterproof Clear 5g (DRYLOK - 20915) by drylok
- **How much does it cost?** ¥151154 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/97309845-masonry-waterproof-clear-5g-drylok-20915)

## Best For

- drylok enthusiasts

## Why This Product

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

## Key Features

- • **Heavy-Duty Volume:** Generous 5-gallon size designed for serious projects without constant reordering.
- • **Precision Coverage:** Efficiently seals approximately 350 sq ft per 5-gallon bucket with 3 coats—know your project’s exact needs.
- • **Crystal Clear Finish:** Maintains the natural look of your surfaces with a sleek, high-gloss transparent coat.
- • **Trusted Brand Legacy:** Drylok, a proven name since 2004, trusted by pros for reliable masonry protection.
- • **Ultimate Waterproof Defense:** Creates a durable, 3-layer shield that keeps moisture out and your masonry pristine.

## Overview

Drylok Masonry Waterproof Clear 5g is a professional-grade, clear waterproofing solution designed for masonry floors and slabs. It delivers a high-gloss, transparent finish that protects surfaces with a robust 3-coat barrier, covering roughly 350 sq ft per 5-gallon bucket. Ideal for basement floors and foundations, this product combines volume, clarity, and durability to keep your masonry dry and looking sharp.

## Description

Drylok Masonry Waterproof Clear 5g (DRYLOK - 20915)

Review: Coverage inaccurate and seller customer service is pathetic - Product appears to be ok but only time will tell. However, based on the coverage numbers provided (90-100sf) I bought 4 - 5 gallon buckets (20 gallons), based on the 1100 sf I needed to cover. At that I thought that would be short but could order more if need be. It took a little longer than I expected to get to this project and when I realized that 10 gallons was more than enough to cover all 1100 sf. I rolled it on rather heavy and used 3 coats since I had barely opened the second 5 gallon pale with the second coat. At that I have at least 1 maybe 2 gallons remaining, so roughly used no more than 9 gallons for 3 coats on 1100 sf of slab floor. I reached out to the seller "The Factory Depot" and they just stated I was outside my return window (which was only about 10 days at that). How convenient for them to oversell a product and use a 30 day return window as just an excuse to ignore an issue. Certainly not what I would call good customer service. Basically I'm stuck with $450 (2 - 5gallon buckets) which is of no use to me. Bottom line don't buy this from vendor "The Factory Depot" and if you do buy it take the coverage estimates with a grain of salt. I would say it may vary some with how porous your slab floor is but I expect most use cases in basements or just slab foundations they are relatively smooth the coverage is more like 350 sf. plus or minus a bit (I estimate averaged over 3 coats 366 sf). Would probably give it 4-5 stars but for the completely inaccurate coverage estimate and extremely poor customer service.
Review: poorly packaged with slight leakage - Product arrived as a 5 gal can contained within a thin cardboard box. There was slight leakage inside the box. Nothing major, however this indicates that the container was breached during shipment, not a big deal because I used it immediately. Aside from packaging issue, product appears to be working exactly as advertised.

## Features

- Product Type: Tools
- Package Quantity: 1
- Package Dimentions: 31.191 cms (L) x 32.207 cms (W) x 40.411 cms (H)
- Country Of Origin: China

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00LMMQY3C |
| Batteries Required? | No |
| Best Sellers Rank | #250,428 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #560 in Interior & Exterior House Paint |
| Color | Clear |
| Customer Reviews | 4.7 4.7 out of 5 stars (39) |
| Date First Available | September 1, 2004 |
| Finish | High Gloss |
| Included Components | Masonry |
| Item Package Quantity | 1 |
| Item Weight | 46 pounds |
| Item model number | DRYLOK - 20915 |
| Manufacturer | Drylok |
| Material | Plastic |
| Part Number | 20915 |
| Power Source | Air Powered |
| Product Dimensions | 15 x 15 x 21 inches |
| Size | 640 Fl Oz (Pack of 1) |
| Style | Compact |
| Usage | Floor |
| Volume | 5 Liters |
| Warranty Description | Warranty |

## Images

![Masonry Waterproof Clear 5g (DRYLOK - 20915) - Image 1](https://m.media-amazon.com/images/I/61pe0TLXPTL.jpg)

## Questions & Answers

**Q: What’s the coverage per gallon**
A: I put to coats on an unfinished concrete floor, and used about half of a 5 gallon bucket. Seems like prett good stuff. Dries to a really tough, plastic like finish.  Bill

**Q: How do you apply this product?**
A: I used a 3/8" heavy nap roller.  The waterproofing is very thick so I doubt you could use a brush or sprayer.

**Q: Does this product have VOC's?**
A: While I'm not sure what the label says, I can tell you that the product has little to no odor.  I have only used it on exterior applications, but I love it.  I have tried numerous sealers and this is by far the most durable I have found.

**Q: Also if ther is no clear of this product, does it have colors?  A color card?**
A: its clear. the label states that

## Customer Reviews

### ⭐⭐⭐ Coverage inaccurate and seller customer service is pathetic
*by T***D on February 21, 2024*

Product appears to be ok but only time will tell. However, based on the coverage numbers provided (90-100sf) I bought 4 - 5 gallon buckets (20 gallons), based on the 1100 sf I needed to cover. At that I thought that would be short but could order more if need be. It took a little longer than I expected to get to this project and when I realized that 10 gallons was more than enough to cover all 1100 sf. I rolled it on rather heavy and used 3 coats since I had barely opened the second 5 gallon pale with the second coat. At that I have at least 1 maybe 2 gallons remaining, so roughly used no more than 9 gallons for 3 coats on 1100 sf of slab floor. I reached out to the seller "The Factory Depot" and they just stated I was outside my return window (which was only about 10 days at that). How convenient for them to oversell a product and use a 30 day return window as just an excuse to ignore an issue. Certainly not what I would call good customer service. Basically I'm stuck with $450 (2 - 5gallon buckets) which is of no use to me. Bottom line don't buy this from vendor "The Factory Depot" and if you do buy it take the coverage estimates with a grain of salt. I would say it may vary some with how porous your slab floor is but I expect most use cases in basements or just slab foundations they are relatively smooth the coverage is more like 350 sf. plus or minus a bit (I estimate averaged over 3 coats 366 sf). Would probably give it 4-5 stars but for the completely inaccurate coverage estimate and extremely poor customer service.

### ⭐⭐⭐⭐ poorly packaged with slight leakage
*by J***D on November 22, 2021*

Product arrived as a 5 gal can contained within a thin cardboard box. There was slight leakage inside the box. Nothing major, however this indicates that the container was breached during shipment, not a big deal because I used it immediately. Aside from packaging issue, product appears to be working exactly as advertised.

### ⭐⭐⭐⭐ Hopeful
*by B***. on December 28, 2019*

I can't tell how well it keeps out water unless it starts not working but it left a really cool non-slip texture on my basement concrete floor. Make sure to follow directions (e.g. at least 2 coats).

## Frequently Bought Together

- Drylok Masonry Waterproof Clear 5g (DRYLOK - 20915)
- UGL 30507 10.5 Oz Drylok Masonry Crack Filler (pack of 2)
- DRYLOK 90237 Synthetic Bristle Masonry Brush, 4-Inch, 4 Inch, White

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-19*