---
product_id: 268388639
title: "High-Build Primer Surfacer Gray 16 oz. (6/Pack)"
brand: "sem"
price: "$U15175"
currency: UYU
in_stock: true
reviews_count: 5
category: "Sem"
url: https://www.desertcart.uy/products/268388639-high-build-primer-surfacer-gray-16-oz-6-pack
store_origin: UY
region: Uruguay
---

# 1 hr fast dry time easy sanding with 320-400 grit superior adhesion on 5+ surfaces High-Build Primer Surfacer Gray 16 oz. (6/Pack)

**Brand:** sem
**Price:** $U15175
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your restoration game with SEM’s high-build primer—where speed meets flawless adhesion!

## Quick Answers

- **What is this?** High-Build Primer Surfacer Gray 16 oz. (6/Pack) by sem
- **How much does it cost?** $U15175 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/268388639-high-build-primer-surfacer-gray-16-oz-6-pack)

## Best For

- sem enthusiasts

## Why This Product

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

## Key Features

- • **Pro-Grade Coverage:** Covers 11 sq. ft. at 2 mil DFT, maximizing efficiency and minimizing waste on every job.
- • **Speedy 1-Hour Dry Time:** Get your project moving fast with primer that’s ready for topcoat in just 60 minutes.
- • **High-Build Filler Power:** Fill minor surface flaws with 2-3 medium coats for a perfectly leveled finish every time.
- • **Unmatched Multi-Surface Grip:** Adheres flawlessly to steel, aluminum, urethane, fiberglass, and plastics for a flawless base.
- • **Effortless Sanding Experience:** Smooth out imperfections quickly using standard 320-400 grit sandpaper—no extra hassle.

## Overview

SEM High-Build Primer Surfacer is a fast-drying, gray acrylic primer designed for superior adhesion and filling on steel, aluminum, urethane, fiberglass, and plastic surfaces. It dries in 1 hour, sands easily with 320-400 grit sandpaper, and provides excellent coverage of 11 sq. ft. per 16 oz. can at 2 mil thickness. Ideal for automotive and restoration projects, this 6-pack aerosol set ensures professional-grade results with minimal waste.

## Description

High-Build Primer Surfacer is a flexible acrylic coating for priming steel, aluminum, urethane, fiberglass and plastics. Features:Provides superior adhesionExcellent filling propertiesWorks on flexible or rigid substratesEasy to sandTop coat with most refinish materialApplications:SteelAluminumPlasticSMCFiberglassProperties:Coverage: 11 sq. ft. at 2 mil DFTCoats: 2-3 medium wetDry time: 1 hrFlash time: 5-10 min between coats

Review: Good quality primer for automotive - Best primer money can buy. It adheres to my 57 ford f250 body and allows for automotive paint to stick. I have tried the rustolum brand which caused the automotive paint to peel. If you’re doing a restoration, use this as it also has filler in the primer.
Review: Great primer - Use in my shop all the time for small areas equals no waste

## Features

- Gray auto primer provides superior adhesion
- Acrylic coasting that can be used as a steel, aluminum, urethane, fiberglass or plastic primer
- Filler primer is easy to sand with a 320-400 grit sandpaper
- Apply 2-3 medium coats of SEM High Build Automotive Primer
- Dry Time for the primer paint for cars: 1 hour

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08Q29DXTP |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #195,176 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #142 in Primer Paint |
| Brand | SEM |
| Color | Gray |
| Color Code | #808080 |
| Coverage | Medium |
| Customer Reviews | 4.1 4.1 out of 5 stars (18) |
| Date First Available | April 5, 2021 |
| Dry Time In Hours | 1 |
| Finish | High-Gloss |
| Finish Type | High-Gloss |
| Full Cure Time | 1 Hours |
| Indoor/Outdoor Usage | Outdoor |
| Is Waterproof | False |
| Item Form | Aerosol |
| Item Package Quantity | 6 |
| Item Volume | 16 Fluid Ounces |
| Item Weight | 8.27 pounds |
| Manufacturer | SEM |
| Package Dimensions | 10.87 x 7.36 x 7.36 inches |
| Package Information | Can |
| Paint Type | Acrylic |
| Part Number | 42013 |
| Size | 16 Ounce (Pack of 6) |
| Special Feature | Fast-Drying |
| Special Features | Fast-Drying |
| Specific Uses For Product | Interior/Exterior |
| Surface Recommendation | Fiberglass |
| Unit Count | 96 Ounce |
| Water Resistance Level | Water Repellent |

## Product Details

- **Brand:** SEM
- **Color:** Gray
- **Finish Type:** High-Gloss
- **Item Volume:** 16 Fluid Ounces
- **Paint Type:** Acrylic
- **Size:** 16 Ounce (Pack of 6)
- **Special Feature:** Fast-Drying
- **Specific Uses For Product:** Interior/Exterior
- **Surface Recommendation:** Fiberglass
- **Unit Count:** 96 Ounce

## Images

![High-Build Primer Surfacer Gray 16 oz. (6/Pack) - Image 1](https://m.media-amazon.com/images/I/71bz2ANFKZL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good quality primer for automotive
*by B***S on October 6, 2025*

Best primer money can buy. It adheres to my 57 ford f250 body and allows for automotive paint to stick. I have tried the rustolum brand which caused the automotive paint to peel. If you’re doing a restoration, use this as it also has filler in the primer.

### ⭐⭐⭐⭐⭐ Great primer
*by L***M on July 17, 2021*

Use in my shop all the time for small areas equals no waste

### ⭐⭐⭐⭐ Good coverage for sanding.
*by A***R on February 23, 2024*

Restoration on antique farm tractor.

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**Shop now:** [https://www.desertcart.uy/products/268388639-high-build-primer-surfacer-gray-16-oz-6-pack](https://www.desertcart.uy/products/268388639-high-build-primer-surfacer-gray-16-oz-6-pack)

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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-03-20*