---
product_id: 301997389
title: "Rust-Oleum Zinsser 287512 Molding Blocking Spray Primer, 13 oz, White"
brand: "zinsser"
price: "A$37"
currency: AUD
in_stock: true
reviews_count: 13
category: "Zinsser"
url: https://www.desertcart.com.au/products/301997389-rust-oleum-zinsser-287512-molding-blocking-spray-primer-13-oz
store_origin: AU
region: Australia
---

# Covers 8-10 sq. ft. per can Dries to touch in 5 minutes EPA-registered antimicrobial shield Rust-Oleum Zinsser 287512 Molding Blocking Spray Primer, 13 oz, White

**Brand:** zinsser
**Price:** A$37
**Availability:** ✅ In Stock

## Summary

> 🛡️ Mold’s worst nightmare, your project’s best friend.

## Quick Answers

- **What is this?** Rust-Oleum Zinsser 287512 Molding Blocking Spray Primer, 13 oz, White by zinsser
- **How much does it cost?** A$37 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/301997389-rust-oleum-zinsser-287512-molding-blocking-spray-primer-13-oz)

## Best For

- zinsser enthusiasts

## Why This Product

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

## Key Features

- • **Kills Mold, Not Just Covers It:** EPA-registered fungicidal primer that actively eliminates mold, mildew, and odor-causing bacteria for lasting protection.
- • **Low Odor, Water-Based Clean-Up:** Enjoy a low-odor, eco-friendly spray that cleans up easily with soap and water—no harsh chemicals needed.
- • **Versatile Surface Compatibility:** Bonds seamlessly to masonry, metal, chalky siding, and more—ideal as a base for any topcoat, especially Zinsser Perma-White.
- • **Fast-Dry Formula for Quick Turnaround:** Touch dry in 5 minutes and recoatable within 30 minutes—perfect for busy pros who value efficiency.
- • **Trusted by Professionals & Homeowners Alike:** Ranked #1 in Primer Paint with 4.5-star reviews, delivering proven mold-killing results even in challenging environments.

## Overview

Rust-Oleum Zinsser 287512 Molding Blocking Spray Primer is a 13 oz. EPA-registered, water-based fungicidal primer designed to kill existing mold, mildew, and odor-causing bacteria. It dries quickly—touch dry in 5 minutes and recoatable within 30—covering 8-10 sq. ft. per can. Low odor and easy to clean up, it bonds to multiple surfaces including masonry and metal, making it the go-to primer for professionals and homeowners seeking fast, effective mold remediation under any topcoat.

## Description

Zinsser Mold Killing Primer is a water-based fungicidal protective coating that can be used to paint over existing mold, mildew, moss, fungi, odor causing bacteria and any other fungal organisms. The mold killing primer contains an epa registered antimicrobial to prevent the growth of mold, mildew and other fungal organisms on the paint film. Use indoors or out on a variety surfaces including under wall Coverings. Mold killing primer also aides in covering residual microbiological and fungal stains.

Review: Zinsser Mold Killing Primer — The only primer that actually kills mold, not just “prevents” it - I didn’t even know this product existed until a customer told me about it back when I worked at Wally World. They were dealing with a major mold problem in their home, and every time they used Kilz, the mold came right back. After doing their research, they found this primer — the only one marketed as a true mold‑killing primer instead of just a mold‑resistant one. That stuck with me. Since then, I’ve used it myself several times, and it’s been consistently effective. Real‑world results: - Warehouse drywall: We had constant mold issues from dampness. We painted the affected areas with this primer — no topcoat, just two coats of the primer — and it stayed clean the entire time I worked there. (And honestly, the coworker who applied it didn’t even clean the walls first, which is not recommended, but it still worked.) - Flood‑prone basement: Even after cutting the drywall higher to avoid water contact, the leftover dampness kept causing mold. I used this primer on the walls, and the mold didn’t return while I lived there. - New house with vent moisture issues: One storage room had a massive mold patch on the wall. I cleaned it as well as I could — not perfectly — then painted it with this primer. Months later, the mold still hasn’t come back. Bottom line: If you’re dealing with mold and you’re not confident you can remove every last trace before painting, this primer is absolutely worth it. It saves time, reduces stress, and actually kills what’s there instead of just hoping it won’t return.
Review: Does its job but smells! - Strong smell but it did the job. It dries quickly and has helped stop a mold issue. The white color looks nice but you can also paint over it. It’s a good quality and a little goes a long way. The paint is thicker so it had great coverage and does what it’s supposed to!

## Features

- EPA registered primer blocks existing mold, mildew, and odor causing bacteria without extensive pre-cleaning
- Low odor, water-based coating cleans up easily with soap and water
- Covers between 8-10 sq. ft., dries to the touch in 5 minutes and recoats within 30 minutes for quick project completion
- Water based fungicidal protective coating works under any coating and aides in covering fungal stains
- Great for use under any topcoat; ideal with ZINSSER Perma-White. Binds chalky siding, masonry, and metal

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08TT9XWP5 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #2,223 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1 in Primer Paint |
| Brand | Zinsser |
| Color | White |
| Color Code | 000000 |
| Coverage | 8-10 sq. ft. |
| Customer Reviews | 4.5 4.5 out of 5 stars (3,990) |
| Date First Available | January 22, 2021 |
| Finish | Matte |
| Finish Type | Matte |
| Full Cure Time | 3E+1 Minutes |
| Included Components | Mold Killing Primer |
| Indoor/Outdoor Usage | Indoor |
| Is Waterproof | False |
| Item Form | Aerosol |
| Item Package Quantity | 1 |
| Item Volume | 13 Fluid Ounces |
| Item Weight | 1 pounds |
| Item model number | 287512 |
| Manufacturer | Rust-Oleum |
| Material | Plastic |
| Model Name | Zinsser Molding Killing Primer |
| Package Information | Can |
| Paint Type | Spray |
| Part Number | 287512 |
| Product Dimensions | 2.63 x 2.63 x 7.88 inches |
| Size | 13 Ounce (Pack of 1) |
| Special Feature | Mold Killing, Odor Resistant |
| Special Features | Mold Killing, Odor Resistant |
| Specific Uses For Product | Interior |
| Surface Recommendation | Masonry,Metal |
| UPC | 020066295189 |
| Unit Count | 13.0 Ounce |
| Warranty Description | Warranty |
| Water Resistance Level | Not Water Resistant |

## Product Details

- **Brand:** Zinsser
- **Color:** White
- **Finish Type:** Matte
- **Item Volume:** 13 Fluid Ounces
- **Paint Type:** Spray
- **Size:** 13 Ounce (Pack of 1)
- **Special Feature:** Mold Killing, Odor Resistant
- **Specific Uses For Product:** Interior
- **Surface Recommendation:** Masonry,Metal
- **Unit Count:** 13.0 Ounce

## Images

![Rust-Oleum Zinsser 287512 Molding Blocking Spray Primer, 13 oz, White - Image 1](https://m.media-amazon.com/images/I/71YykgNnwVL.jpg)

## Questions & Answers

**Q: will this remove water stains?**
A: It worked very well on the small mold discoloration. I'd try it for water stains because of the completed coverage on the darker mold stains. Seems as opaque as would be needed....

**Q: Need to wait 2 days before applying second coat to undersink area. Is that a problem?**
A: I do not know for sure; I used the stuff in an un-ventilated cupboard and applied 2 coats as 1/day. I do not recall anything thing that conditioned application other than to be sure that the previous coat was dry. Clearly there is some chemical reaction going on, but once dry one may imagine that the process is complete? Good luck.

**Q: Did this get rid of mold? For how long? Did the mold come back later?**
A: Yes it did get rid of the mold. There are a couple of spots where the mold is returning but they seem to be areas that did not get as much paint but even those areas took about 6 months to return. I highly recommend  this item in fact I am planning to order more for another room. T

**Q: Why does this say recommended for metal,non porous surfaces but shows wood walls as the objects used on,painted with?**
A: I used in on a concrete floor

## Customer Reviews

### ⭐⭐⭐⭐⭐ Zinsser Mold Killing Primer — The only primer that actually kills mold, not just “prevents” it
*by M***E on January 9, 2026*

I didn’t even know this product existed until a customer told me about it back when I worked at Wally World. They were dealing with a major mold problem in their home, and every time they used Kilz, the mold came right back. After doing their research, they found this primer — the only one marketed as a true mold‑killing primer instead of just a mold‑resistant one. That stuck with me. Since then, I’ve used it myself several times, and it’s been consistently effective. Real‑world results: - Warehouse drywall: We had constant mold issues from dampness. We painted the affected areas with this primer — no topcoat, just two coats of the primer — and it stayed clean the entire time I worked there. (And honestly, the coworker who applied it didn’t even clean the walls first, which is not recommended, but it still worked.) - Flood‑prone basement: Even after cutting the drywall higher to avoid water contact, the leftover dampness kept causing mold. I used this primer on the walls, and the mold didn’t return while I lived there. - New house with vent moisture issues: One storage room had a massive mold patch on the wall. I cleaned it as well as I could — not perfectly — then painted it with this primer. Months later, the mold still hasn’t come back. Bottom line: If you’re dealing with mold and you’re not confident you can remove every last trace before painting, this primer is absolutely worth it. It saves time, reduces stress, and actually kills what’s there instead of just hoping it won’t return.

### ⭐⭐⭐⭐⭐ Does its job but smells!
*by N***E on January 17, 2026*

Strong smell but it did the job. It dries quickly and has helped stop a mold issue. The white color looks nice but you can also paint over it. It’s a good quality and a little goes a long way. The paint is thicker so it had great coverage and does what it’s supposed to!

### ⭐⭐⭐⭐⭐ Kinda thin but works great on mold.
*by S***L on November 12, 2025*

A little thin but I’m guessing it’s because of the mold killer. Covered great and no more mold smell. If I run into more mold I’ll definitely buy this again.

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-01*