---
product_id: 70004582
title: "Exterior 450 Water Based Topcoat, 1 Quart, Flat"
brand: "general finishes"
price: "$168.94"
currency: USD
in_stock: true
reviews_count: 8
url: https://www.desertcart.ec/products/70004582-exterior-450-water-based-topcoat-1-quart-flat
store_origin: EC
region: Ecuador
---

# Water-based, easy cleanup Ready to sand in 1 hour UV absorbers for fade resistance Exterior 450 Water Based Topcoat, 1 Quart, Flat

**Brand:** general finishes
**Price:** $168.94
**Availability:** ✅ In Stock

## Summary

> ☀️ Protect your outdoor style with a finish that works as hard as you do!

## Quick Answers

- **What is this?** Exterior 450 Water Based Topcoat, 1 Quart, Flat by general finishes
- **How much does it cost?** $168.94 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/70004582-exterior-450-water-based-topcoat-1-quart-flat)

## Best For

- general finishes enthusiasts

## Why This Product

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

## Key Features

- • **Mold & Mildew Defense:** Built-in mildewcides help prevent unsightly mold and fungus growth on exterior surfaces.
- • **Versatile Application:** Brush, spray, or roll with ease—perfect for all your exterior wood, metal, or composite surfaces.
- • **Fast-Track Your Finish:** Dries quickly and is ready to sand in just one hour, so your project moves at your pace.
- • **Eco-Friendly & Effortless:** Water-based formula means soap and water cleanup—no harsh chemicals, no hassle.
- • **Shield Your Outdoor Masterpieces:** Fortified with UV absorbers to keep your wood looking fresh and vibrant longer.

## Overview

General Finishes Exterior 450 Water Based Topcoat is a flat, water-based finish designed for exterior wood, metal, and composite surfaces. It features UV absorbers to minimize fading, built-in mildewcides to resist mold and fungus, and dries fast—ready to sand in one hour. Easy to apply by brush, spray, or roller, it offers 140-160 sq.ft. coverage per quart with simple soap and water cleanup.

## Description

GeneralFinishes Exterior 450 is fortified with UV absorbers to minimize fading andbuilt-in mildewcides to help retard the growth of mold and fungus. Plus, Exterior 450 is fast – ready to sand inone hour (under ideal conditions), which means you can be done finishingquickly. This Finish is ideal for an Adirondackchair, planter’s bench, trellis or something else for your porch or patio.

## Features

- Do not apply clear topcoats over bright white paint, as yellowing may occur due to a reaction to the substrate. Light color paints may also experience yellowing due to topcoat application, but it will less noticeable
- Exterior 450 Topcoat is fortified with UV absorbers to stabilize and protect the integrity of the finish but will not prevent the wood from changing color from sunlight
- Water based formula can be brushed, sprayed or rolled; soap and water cleanup

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Color | Flat |
| Brand | General Finishes |
| Surface Recommendation | Exterior surfaces (wood, metal, composite) |
| Material | Water Based |
| Model Name | B093-L Quart |
| Size | 1 Quart |
| Coating Description | Water Based |
| Item dimensions L x W x H | 4.5 x 4.5 x 4.88 inches |
| Item Weight | 2 Pounds |
| Finish Type | Flat |
| Recommended Uses For Product | Exterior |
| Special Feature | UV Resistant |
| Liquid Volume | 1 Quarts |
| Paint Type | Water Based |
| Warranty Type | Limited |
| Number of Items | 1 |
| Manufacturer | General Finishes |
| Unit Count | 32.0 Fluid Ounces |
| UPC | 606016107681 |
| Part Number | QXF |
| Item Weight | 2 pounds |
| Product Dimensions | 4.5 x 4.5 x 4.88 inches |
| Item model number | B093-L Quart |
| Is Discontinued By Manufacturer | No |
| Finish | Flat |
| Item Package Quantity | 1 |
| Coverage | 140-160 sq.ft. |
| Special Features | UV Resistant |
| Usage | Exterior |
| Included Components | 1 unit |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Color:** Flat
- **Brand:** General Finishes
- **Surface Recommendation:** Exterior surfaces (wood, metal, composite)
- **Material:** Water Based
- **Model Name:** B093-L Quart

## Images

![Exterior 450 Water Based Topcoat, 1 Quart, Flat - Image 1](https://m.media-amazon.com/images/I/617X1KzoJKL.jpg)

## Available Options

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

## Questions & Answers

**Q: Does this block UV damage?**
A: Yes.  Rain exposure will however cause it to wear off, so use several coats (4 or 5).  You may have to sand/refinish annually, but this is likely going to be the case for all outdoor finishes.

**Q: I opened my can and it is white and as thick as yogurt.  Is this normal?**
A: Yep!... just make sure you stir it well.  My rule of thumb is 10 clockwise, 10 times counterclockwise, then repeat 10 times.  It will loosen up a little but remain white.  When you apply (if you apply smoothly and thinly) no white should be apparent.

**Q: This product is titled "flat quart", but the photo shows semi-gloss. Which finish is this product?**
A: Wow I missed that!  It's flat!

**Q: Can this be used on raw wood, stained wood and, painted surfaces all in the exterior application?**
A: I have used it on painted furniture and stained furniture outdoors. The front door and the swing both were covered but exposed to wind and rain only win storms blew it in. It’s a great product.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very carefully packaged
*by T***E on June 10, 2025*

Worked great. Very carefully packaged. Nice product

### ⭐⭐⭐⭐⭐ Great quality!!!
*by C***S on May 26, 2025*

Always the best , general finishes!!

### ⭐⭐⭐⭐⭐ Make sure you don't shake it to mix. stir it like the instructions say.
*by P***Y on May 6, 2025*

Works great

## Frequently Bought Together

- General Finishes Exterior 450 Water Based Topcoat, 1 Quart, Flat
- General Finishes Exterior 450 Water Based Wood Stain, 1 Quart, Black Walnut
- Pro Grade, Paint Brushes, 5-Piece, Paint Brush Set: Flat & Angle Brushes for Latex and Oil Paints, Stains, Interior & Exterior Home Improvement

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-02-01*