Skip to main contentSkip to footer
Slide 1 of 2

Overview

**Overview** SH-12 Sodium Hypochlorite 12% is a professional soft wash solution formulated to eliminate algae, moss, mold, mildew, and organic staining from roofs, siding, concrete, and exterior surfaces. Built for contractors and maintenance professionals, it delivers strong and reliable cleaning performance across multiple exterior applications.

SH-12 Sodium Hypochlorite 12% – Professional Soft Wash Solution

Model: 407C
Web Code: 17923188
Sold and shipped by | 3.5 seller rating (2 reviews)

Available for deliveryAvailable online only

Delivery times vary by location. Most Marketplace items leave sellers' locations within 2 business days. Allow additional time for shipping.

Seller Return Policy

Read return policy

Warranty

Check with the manufacturer for details.

For Quebec residents: See the Availability Guarantee disclosure in the Specifications section below.

**Key Benefits**

- Highly effective at removing organic growth and staining

- Ideal for roof cleaning, house washing, concrete cleaning, and masonry

- Works seamlessly with RS-DR Roof Surfactant for improved dwell time and visibility

- Industry-standard 12% SH strength for professional soft wash contractors

- Compatible with batch-mix systems, proportioners, pump sprayers, and low-pressure setups

- Cleans without the need for damaging high pressure

**Typical On-Surface Dilution Ranges**

- Roof cleaning: 2–4% available SH

- House washing (siding, soffits, fascia): 0.5–2%

- Concrete and masonry: 1–3% depending on severity

**Application / Use**

1. Apply using soft wash rigs, proportioning systems, batch-mix setups, or pump sprayers.

2. For roof treatments, pair with RS-DR to improve cling and reduce runoff.

3. Pre-wet nearby plants, grass, and landscaping.

4. Rinse thoroughly after application.

5. Do not mix SH with acids, ammonia, or incompatible chemicals.

**Ideal For**

- Soft wash contractors

- Property maintenance teams

- Municipal facilities and commercial buildings

- HOAs and multi-unit properties

- Agriculture and food environments needing sanitation

- Exterior cleaning where organic contamination is common

**Safety & SDS**

Sodium hypochlorite is a strong oxidizer. Always wear chemical-resistant gloves, eye protection, and appropriate PPE. SDS documents are available upon request.

For Quebec residents – Disclosure under the Consumer Protection Act

In compliance with Bill 29, Best Buy and third-party sellers on Best Buy Marketplace do not guarantee the availability of replacement parts, repair services, or maintenance information for any products. Coverage provided through any Best Buy Protection programs and applicable manufacturer warranties, if any, remain in place. Please contact the manufacturer directly for information about their availability guarantee.

Shipping Charges

Free standard shipping may be available on orders over a minimum amount (before taxes, fees, and promo codes). Shipping charges may vary based on item size and your shipping address. Want a shipping charge estimate? Simply add an item to your cart, then access the cart and enter your postal code in the shipping estimate section.

Processing Time

Most items ship within 2 business days after an order is placed*. Allow additional time for shipping to your address.
*Please note: If an item you ordered becomes unavailable, you'll be notified and a full refund will be processed within 2 business days.

Shipping Area Restrictions

Shipping is not available in the following areas*:
  • No restrictions in Canada
*Please note: Shipping area restrictions may vary for large items. If an item can't be shipped to your address, we'll let you know during the checkout process.
Product Category
Cleaning supplies and chemicals
Return/Exchange Period
30 days
Condition
Unopened, No signs of use

Consumable Product cannot be returned if opened

Learn more about returning a Marketplace product