---
product_id: 13033032
title: "qt Flood FLD4 Penetrol Oil-Based Exterior Paint Additive"
brand: "flood"
price: "¥14463"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/13033032-qt-flood-fld4-penetrol-oil-based-exterior-paint-additive
store_origin: JP
region: Japan
---

# Boosts adhesion to prevent peeling Reduces brush & roller marks Stops & prevents rust qt Flood FLD4 Penetrol Oil-Based Exterior Paint Additive

**Brand:** flood
**Price:** ¥14463
**Availability:** ✅ In Stock

## Summary

> 🖌️ Elevate your exterior paint game—because your home deserves the best!

## Quick Answers

- **What is this?** qt Flood FLD4 Penetrol Oil-Based Exterior Paint Additive by flood
- **How much does it cost?** ¥14463 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/13033032-qt-flood-fld4-penetrol-oil-based-exterior-paint-additive)

## Best For

- flood enthusiasts

## Why This Product

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

## Key Features

- • **Trusted by Pros:** Highly rated with 4.8 stars, a go-to for exterior oil-based paints
- • **Rust Defense Shield:** Stops and prevents rust on metal surfaces, extending lifespan
- • **Unmatched Durability:** Enhances paint adhesion to keep your exterior flawless longer
- • **Deep Penetration Power:** Improves paint absorption for superior surface protection
- • **Flawless Finish Every Time:** Smooth out brush and roller marks for a professional look

## Overview

qt Flood FLD4 Penetrol is a premium oil-based exterior paint additive designed to reduce brush and roller marks, increase adhesion to prevent peeling and blistering, improve paint penetration, and stop rust on metal surfaces. Ideal for alkyd/oil paints, primers, and stains, it covers 2.5-3.5 sq ft per quart and dries in 24 hours, delivering a durable matte finish trusted by professionals.

## Description

NA

## Features

- For Exterior Alkyd/Oil Paints, Primers And Stains
- Reduces brush and roller marks
- Increases adhesion to prevent peeling and blistering
- Improves penetration
- Stops and prevents rust

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001CSKEAU |
| Age Range Description | Adult |
| Best Sellers Rank | #512,958 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,390 in Interior & Exterior House Paint |
| Brand | Flood |
| Brand Name | Flood |
| Container Type | Can |
| Coverage | 2.5-3.5 sq ft/quart, 10-12 sq ft/gallon |
| Customer Reviews | 4.8 out of 5 stars 53 Reviews |
| Dry Time In Hours | 24 |
| Finish Type | Matte |
| Included Components | .... |
| Indoor Outdoor Usage | Outdoor |
| Is Waterproof | False |
| Item Form | Liquid |
| Item Type Name | ... |
| Item Volume | 1 quarts |
| Item Weight | 2.3 pounds |
| Manufacturer | Flood |
| Model Name | Penetrol |
| Model Number | 00410 |
| Paint Type | Oil |
| Part Number | FLD4-04 |
| Size | 32 Fl Oz (Pack of 1) |
| Special Feature | special_feature |
| Special Features | special_feature |
| Specific Uses For Product | Exterior |
| Surface Recommendation | Metal |
| UPC | 010273004100 |
| Unit Count | 32 Fluid Ounces |
| Water Resistance Level | Water Resistant |

## Product Details

- **Brand:** Flood
- **Finish Type:** Matte
- **Indoor/Outdoor Usage:** Outdoor
- **Item Volume:** 1 quarts
- **Paint Type:** Oil
- **Size:** 32 Fl Oz (Pack of 1)
- **Special Feature:** special_feature
- **Specific Uses For Product:** Exterior
- **Surface Recommendation:** Metal
- **Unit Count:** 32 Fluid Ounces

## Images

![qt Flood FLD4 Penetrol Oil-Based Exterior Paint Additive - Image 1](https://m.media-amazon.com/images/I/71Vz-h43U0L.jpg)

## Questions & Answers

**Q: One review stated this was used to preserve a rust patina. Would this help automotive clear spray adhere and preserve the rust on an old milk can?**
A: I only used this product to remove a lot of old rust on an outdoor iron rack.  It didn't do the job.  Don't have experience with the other product or method you are attempting.

**Q: Why is it "exterior only"? Can it not be used with interior oil based paints? (with proper ventilation, I assume the fumes are bad)**
A: Yes you are correct.  When spraying the oil based paint along with penetrol are a bit overwelming with fumes.  I have used a mid priced automotive paint resporator to spray interior doors and trim.  Remember that oil based paints are hard to clean up(more masking, longer cleaning time, more spray gun cleaning, solvents, and lots of basic throwing away of brushes, rollers, trays, drop clothes)

**Q: Can I use penetrol as a top coat over enamel paint?**
A: I wouldn't.  That's not what it's for.  It's a paint additive to remove lap marks when the paint is still wet, and it works well as a way of preventing rust from further oxidation and keeping the patina of rust, but it's not a top coat the way that other clear coats might cover over paint.

**Q: Can this be used with water-based urethane alkyd enamel?**
A: This is only for oil based paint.

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**Shop now:** [https://www.desertcart.jp/products/13033032-qt-flood-fld4-penetrol-oil-based-exterior-paint-additive](https://www.desertcart.jp/products/13033032-qt-flood-fld4-penetrol-oil-based-exterior-paint-additive)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-09-19*