---
product_id: 66905922
title: "5 Litre ROOF Bitumen Primer"
brand: "masterbitumens"
price: "€ 165.00"
currency: EUR
in_stock: true
reviews_count: 8
category: "Masterbitumens"
url: https://www.desertcart.it/products/66905922-5-litre-roof-bitumen-primer
store_origin: IT
region: Italy
---

# Universal black primer for all bituminous coatings Fast drying in under 30 mins Covers up to 6-10 m² per litre for max efficiency 5 Litre ROOF Bitumen Primer

**Brand:** masterbitumens
**Price:** € 165.00
**Availability:** ✅ In Stock

## Summary

> 🖤 Prime it right, seal it tight – the pro’s choice for flawless roofing!

## Quick Answers

- **What is this?** 5 Litre ROOF Bitumen Primer by masterbitumens
- **How much does it cost?** € 165.00 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/66905922-5-litre-roof-bitumen-primer)

## Best For

- masterbitumens enthusiasts

## Why This Product

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

## Key Features

- • **Maximized Coverage:** Efficiently covers large surfaces with just 5 litres, saving time and money.
- • **Rapid Drying Power:** Get your project moving fast with a primer that dries quickly, minimizing downtime.
- • **Weather-Resistant Base:** Prepares weathered corrugated iron and steel to withstand the elements with confidence.
- • **Universal Compatibility:** Seamlessly primes concrete, metal, wood, and asphalt for flawless bitumen adhesion.
- • **Perfect Prep for Flashing:** Ideal primer before applying flashing tape systems, ensuring long-lasting seals.

## Overview

The 5 Litre ROOF Bitumen Primer is a fast-drying, black primer designed to prepare a variety of porous and non-porous surfaces—including concrete, metal, wood, and asphalt—for bituminous coatings and flashing tape systems. Offering coverage of 6-10 square meters per litre, it ensures efficient application and strong adhesion, making it an essential base layer for durable, weather-resistant roofing projects.

## Description

5 LITRE BLACK BITUMEN PRIMER MASTER BITUMENS Bitumen Primer is a thin black primer used to give a key prior to applying bitumen paints and roof coatings. Also suitable as a primer prior to applying any flashing tape system. Benefits & uses Fast drying. Suitable for use with all bituminous surface coatings Mainly used for priming Concrete roofs, floors, cementicious screeds, renders, Bitumen felt, asphalt, mastic Weathered corrugated iron and steel. Wood. Limitations Do not use in areas where subsequent solvent contact is likely. Avoid inhalation of vapours in confined spaces. Allow sufficient drying time before overcoating. Surface Preparation Preparation of the surface All surfaces must be sound, stable and thoroughly clean and dry. Metal surfaces should be wire brushed to remove rust. can be applied over red lead or zinc phosphate Remove tar based paint systems before use. New galvanised surfaces should be roughened with a wire brush or treated with a proprietary etch primer, Fibre cement or rag felt apply generously to saturate the surface. Coverage 4 to 6 meters Square per litre depending on porosity of subsrate 11 meters square per litre on non porous surfaces

Review: Good product - In August 2019 I coated my clean flat roof with one coat of your primer which was easy to use and gave good coverage. When dry this was covered with a coat of your Bitumen roof sealer which you state conatisns fibre glass to allow it to be pliable without splitting. Unfortunately since December 2020 the bitumen sealer has split in numerous placec and twice brought down the kitchen ceiling. I believed the leak was coming from where the tiled roof met the flat roof and used Flashband to seal where I belived the leak was, for I did not believe it could come through your product. I repaired the ceiling and was horrified when it leaked through again when we had the next heavy rainfall. The ceiling is now down for the third time. I only wished to carry out a temporary repair for 18months until I could afford to have the whole roof replaced with a one piece Firestone rubber membrane at a cost of just under £4000. The flat roof is 9metres x 7metres in area. I have had, this week, a roofing specialist carry out a temporary repair and now have most of the ceiling to repair again. I have wasted my time and money on your product that does not do what you says it does. I had purchased 3 x 25 litre tins and 3 x 5 litre of primer.
Review: Good price - Good product,good guality thanks

## Features

- Mainly used for priming
- Fast drying
- Suitable for use with all bituminous surface coatings,Weathered corrugated iron and steel.
- Concrete roofs, floors, cementicious screeds, renders, Bitumen felt, asphalt, mastic
- suitable as a primer prior to applying any flashing tape system

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07BTWH2FC |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 54,080 in DIY & Tools ( See Top 100 in DIY & Tools ) 38 in Roof Coatings & Paints |
| Colour | Black |
| Coverage | 6-10 square metres per litre |
| Customer Reviews | 4.4 4.4 out of 5 stars (275) |
| Date First Available | 30 Mar. 2018 |
| Finish | Flatt / Matte |
| Included Components | Brush |
| Item Package Quantity | 1 |
| Item Weight | 4.56 kg |
| Manufacturer | MB |
| Manufacturer reference | 9BPRI00500 |
| Part Number | 9BPRI00500 |
| Product Dimensions | 17.8 x 17.8 x 23.2 cm; 4.56 kg |
| Size | 5 l (Pack of 1) |
| Special Features | Fast-Drying |
| Usage | priming porous surfaces before applying bituminous coatings Exterior |
| Volume | 5 Litres |

## Product Details

- **Brand:** masterbitumens
- **Colour:** Black
- **Finish type:** Flatt / Matte
- **Item volume:** 5 Litres
- **Paint type:** Bitumen
- **Size:** 5 l (Pack of 1)
- **Special feature:** Fast-Drying
- **Specific uses for product:** priming porous surfaces before applying bituminous coatings Exterior
- **Surface recommendation:** Wood,Corrugated,Metal
- **Unit count:** 5000.0 millilitre(s)

## Images

![5 Litre ROOF Bitumen Primer - Image 1](https://m.media-amazon.com/images/I/71Oxfj71rIL.jpg)

## Questions & Answers

**Q: If there is morning dew on the dry primer surface should I wait for it to dry out before applying solar paint?**
A: Surfaces must be dry,these are solvent based products,the curing process allows evaporatIon of the solvent.

**Q: Can this primer be used for gazebo wood roof then apply the master bitumens all weather roofing compound**
A: Yes you can apply it to your gazebo roof and then apply two coats of “all weather roofing compound” after around 4 weeks paint an solar Aluminium paint over the “all weather roofing compound” as this will give a good protection against UV light and prolong the life of the roof

**Q: What is the recommended Sq2 coverage per 5 Litres**
A: Up to around 50m2 depending on how porous the substrate is (4-6m2 per litre on porous surfaces) up to (10m2 on non porous) all information is there to read on the listing if you scroll to (Description)

**Q: is this available in a different colour or if not, can it be painted a different colour?**
A: This is a bituminous based BLACK primer and is used to seal the surface before applying another bituminous based coating,there is a chance the Bitumen could bleed through certain paints so it is advisable to speak with the other paint manufacturer your using for a different colour

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good product
*by R***N on 27 June 2020*

In August 2019 I coated my clean flat roof with one coat of your primer which was easy to use and gave good coverage. When dry this was covered with a coat of your Bitumen roof sealer which you state conatisns fibre glass to allow it to be pliable without splitting. Unfortunately since December 2020 the bitumen sealer has split in numerous placec and twice brought down the kitchen ceiling. I believed the leak was coming from where the tiled roof met the flat roof and used Flashband to seal where I belived the leak was, for I did not believe it could come through your product. I repaired the ceiling and was horrified when it leaked through again when we had the next heavy rainfall. The ceiling is now down for the third time. I only wished to carry out a temporary repair for 18months until I could afford to have the whole roof replaced with a one piece Firestone rubber membrane at a cost of just under £4000. The flat roof is 9metres x 7metres in area. I have had, this week, a roofing specialist carry out a temporary repair and now have most of the ceiling to repair again. I have wasted my time and money on your product that does not do what you says it does. I had purchased 3 x 25 litre tins and 3 x 5 litre of primer.

### ⭐⭐⭐⭐⭐ Good price
*by M***T on 1 January 2026*

Good product,good guality thanks

### ⭐⭐⭐⭐ easy to use
*by W***Z on 29 October 2020*

this primer went on easily, I poured a little on out of the tin straight onto the felt and then spread it wih a six inch roller, repeated the process til covered. Goes a long way and gives a good coat.

## Frequently Bought Together

- 5 Litre ROOF Bitumen Primer
- All Weather Roofing Compound Bitumen Waterproof Roof Coating 25 Litre
- Faithfull Tar Brush Short Handle FAIBRTARSH

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-03-11*