---
product_id: 220596868
title: "Liquipak BAC 50 5L Benzalkonium Chloride Concentrated – powerful outdoor cleaner for roof cleaning, soft washing, patios, decking, paths & general exterior cleaning."
brand: "liquipak"
price: "$98.75"
currency: USD
in_stock: true
reviews_count: 8
category: "Liquipak"
url: https://www.desertcart.us/products/220596868-liquipak-bac-50-5l-benzalkonium-chloride-concentrated-powerful-outdoor-cleaner
store_origin: US
region: United States of America
---

# targets algae, mould & lichen 50% benzalkonium chloride concentrate covers 4m² per litre diluted Liquipak BAC 50 5L Benzalkonium Chloride Concentrated – powerful outdoor cleaner for roof cleaning, soft washing, patios, decking, paths & general exterior cleaning.

**Brand:** liquipak
**Price:** $98.75
**Availability:** ✅ In Stock

## Summary

> ✨ Transform your exteriors with pro-level power 🧴

## Quick Answers

- **What is this?** Liquipak BAC 50 5L Benzalkonium Chloride Concentrated – powerful outdoor cleaner for roof cleaning, soft washing, patios, decking, paths & general exterior cleaning. by liquipak
- **How much does it cost?** $98.75 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/220596868-liquipak-bac-50-5l-benzalkonium-chloride-concentrated-powerful-outdoor-cleaner)

## Best For

- liquipak enthusiasts

## Why This Product

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

## Key Features

- • **Trusted by Pros:** Complies with Control of Pesticides Regulations & COSHH for safe, expert use
- • **Multi-Surface Mastery:** Perfect for roofs, patios, decking, render & cladding
- • **Effortless Application:** Dilutes easily with water and applies via low-pressure sprayer or brush
- • **Biological Growth Buster:** Effectively eliminates algae, mould, and lichen for a pristine finish
- • **Powerful 50% Concentrate:** Professional-grade biocide for deep, lasting outdoor cleaning

## Overview

Liquipak BAC 50 is a concentrated 50% benzalkonium chloride biocide designed for professional outdoor cleaning. It effectively removes algae, mould, and lichen from hard surfaces like roofs, patios, decking, and cladding. Easy to dilute and apply, it covers 4m² per litre of diluted solution, ensuring efficient treatment. Trusted by professionals and compliant with safety regulations, BAC 50 delivers a powerful, long-lasting clean that keeps your exterior spaces looking fresh and well-maintained.

## Description

At Liquipak, we specialise in powerful cleaning agents. What began as a range of just 5 British-manufactured products is now a comprehensive offer including high-quality cleaning agents for households, outdoor spaces, gardens, vehicles, hand care and industrial applications. With more than 30 products in different sizes and variations in our inventory (and growing), we have something to suit all our customers' needs! At Liquipak, we specialise in powerful cleaning agents. What began as a range of just 5 British-manufactured products is now a comprehensive offer including high-quality cleaning agents for households, outdoor spaces, gardens, vehicles, hand care and industrial applications. With more than 30 products in different sizes and variations in our inventory (and growing), we have something to suit all our customers' needs! SHOP OUR BEST SELLERS Liquipak was established in 2019 by members of the team behind Karmelle Ltd, a British manufacturer of liquid packaging machinery. Drawing on over 30 years of experience in the filling industry, we identified a need for a different kind of cleaning agent supplier; one focused on providing the best purchasing experience for its customers and committed to keeping standards high.

Review: Great biocide - Fantastic biocide works really well
Review: It works - Everyone raves about the premixed products for patio cleaning. Well this works out significantly cheaper as a means of doing the job. Follow the instructions for the ratio of water required and safety. Make sure you’re wearing old clothes, gloves and protective eyewear. I mixed mine in a builders muck bucket and applied it to the patio with an old broom on a dry day. It dries in. And the sun and weather do the rest. My north facing, weedy and mossy patio is now considerably better than it was. I have to do more work to properly tidy it up. But as a low effort, starter for 10, this has been really good. The moss is dying, the weeds are unwell and the black staining on the paving is definitely lessening. It is effectively bleach, so don’t get it on flower beds and make sure you have shifted any garden furniture to where it can’t accidentally be splashed.

## Features

- PROFESSIONAL BIOCIDE CLEANER - BAC 50 Powerwash is a 50% benzalkonium chloride professional-use surface biocide for exterior hard surfaces including patios, roofs, render, cladding and driveways.
- TREATS ALGAE, MOULD & LICHEN - Designed to tackle biological growth and organic contamination on outdoor surfaces. When applied correctly, treated areas can weather naturally and continue to self-clean over time.
- FOR ROOFS, PATIOS & HARD SURFACES - Suitable for roof slates, tiles, render, cladding, patios, driveways and similar exterior hard surfaces affected by algae, mould and lichen growth.
- EASY TO DILUTE & APPLY - Dilute with clean water before use. Recommended starting dilutions are 1:20 for render and roofs, and 1:30 for ground surfaces. Apply by low-pressure sprayer or soft brush at around 1 litre of diluted product per 4m².
- FOR PROFESSIONAL OPERATORS ONLY - Read all precautions before use. Use in line with Control of Pesticides Regulations and COSHH requirements. Do not contaminate food surfaces or waterways, do not mix with other chemicals, and ensure suitable training, competence and PPE are in place. HSE No: 11166-002-GB.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08DNMJ7S6 |
| Benefits | Corrosion |
| Best Sellers Rank | 2,477 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 27 in Commercial Disinfectants |
| Brand | Liquipak |
| Brand Name | Liquipak |
| Container Type | Bottle, Jerry Can |
| Contains Liquid Contents? | Yes |
| Customer Reviews | 4.6 out of 5 stars 126 Reviews |
| Item Form | Liquid |
| Item Volume | 5 Litres |
| Item Weight | 5 Kilograms |
| Item form | Liquid |
| Item volume | 5 Litres |
| Manufacturer | Liquipak |
| Material Type Free | Bleach Free |
| Number of Items | 1 |
| Part Number | 9505269281432 |
| Recommended Uses For Product | Roofs, Patios, Decking, Render, Cladding, Hard Surfaces |
| Scent | Unscented |
| Size | 5 l (Pack of 1) |
| Special Features | Antimicrobial, Concentrated, Hospital Grade |
| Specific Uses For Product | Outdoor Cleaning |
| Specific uses for product | Outdoor Cleaning |
| Surface Recommendation | Hard surfaces |
| Unit Count | 5000.0 millilitre |
| Unit count | 5000.0 millilitre |

## Product Details

- **Brand:** Liquipak
- **Item form:** Liquid
- **Item volume:** 5 Litres
- **Material Type Free:** Bleach Free
- **Number of items:** 1
- **Scent:** Unscented
- **Special feature:** Antimicrobial, Concentrated, Hospital Grade
- **Specific uses for product:** Outdoor Cleaning
- **Surface recommendation:** Hard surfaces
- **Unit count:** 5000.0 millilitre

## Images

![Liquipak BAC 50 5L Benzalkonium Chloride Concentrated – powerful outdoor cleaner for roof cleaning, soft washing, patios, decking, paths & general exterior cleaning. - Image 1](https://m.media-amazon.com/images/I/71asXpeo5ML.jpg)
![Liquipak BAC 50 5L Benzalkonium Chloride Concentrated – powerful outdoor cleaner for roof cleaning, soft washing, patios, decking, paths & general exterior cleaning. - Image 2](https://m.media-amazon.com/images/I/81Dd+L1K4tL.jpg)
![Liquipak BAC 50 5L Benzalkonium Chloride Concentrated – powerful outdoor cleaner for roof cleaning, soft washing, patios, decking, paths & general exterior cleaning. - Image 3](https://m.media-amazon.com/images/I/91fe-8188SL.jpg)
![Liquipak BAC 50 5L Benzalkonium Chloride Concentrated – powerful outdoor cleaner for roof cleaning, soft washing, patios, decking, paths & general exterior cleaning. - Image 4](https://m.media-amazon.com/images/I/817iYULwLeL.jpg)
![Liquipak BAC 50 5L Benzalkonium Chloride Concentrated – powerful outdoor cleaner for roof cleaning, soft washing, patios, decking, paths & general exterior cleaning. - Image 5](https://m.media-amazon.com/images/I/91sEG+n-C0L.jpg)

## Available Options

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

## Questions & Answers

**Q: I am wanting to use this in a pressure washer gun which will dilute at 1:7 as it draws through. I wear a face sheild and coveralls, is this suitable?**
A: You are pushing my maths a bit. One in seven is about 14%, so that would equate to 7% BAC. That seems a bit excessive for normal (antifungal) use. I use about 2% strength (50ml per litre).

**Q: Could I dilute with water to spray indoor air and carpets?**
A: I’m not sure that would be a good idea and why on earth would you want to spray a moss killer on your carpets ???

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great biocide
*by D***S on 2 July 2026*

Fantastic biocide works really well

### ⭐⭐⭐⭐⭐ It works
*by S***R on 31 May 2026*

Everyone raves about the premixed products for patio cleaning. Well this works out significantly cheaper as a means of doing the job. Follow the instructions for the ratio of water required and safety. Make sure you’re wearing old clothes, gloves and protective eyewear. I mixed mine in a builders muck bucket and applied it to the patio with an old broom on a dry day. It dries in. And the sun and weather do the rest. My north facing, weedy and mossy patio is now considerably better than it was. I have to do more work to properly tidy it up. But as a low effort, starter for 10, this has been really good. The moss is dying, the weeds are unwell and the black staining on the paving is definitely lessening. It is effectively bleach, so don’t get it on flower beds and make sure you have shifted any garden furniture to where it can’t accidentally be splashed.

### ⭐⭐⭐⭐⭐ Block path.
*by A***R on 30 March 2026*

Arrived on time bac 50 cleans our block paving very well moss and weeds. Put it on with a watering can mindful of plants would like a proper measure in cup so now wast ....

## Frequently Bought Together

- Liquipak BAC 50 5L - Benzalkonium Chloride Concentrated 5L, For Roof Cleaning, Soft Washing, Decking and Outdoor Cleaning
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- Liquipak Sodium Hypochlorite 10L Patio Cleaner | High Strength, Swimming Pool Liquid Chlorine, Concentrated 2x5L

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-12*