Zinc Sulfate Monohydrate 35% Zn Powder 50 lb Moss Control Industrial

Zinc Sulfate Monohydrate 35% Zn — Industrial Grade Powder

50 lb Bag | 35% Zinc | 17% Sulfur | Water Soluble | Moss Control | Roof Treatment | For Industrial Use Only

Professional-Grade Moss Elimination — 35% Active Zinc Content

Gutter cleaning contractors and roof maintenance professionals require effective moss control that eliminates growth at the source. Zinc sulfate monohydrate powder — also called zinc sulphate, moss killer, moss control powder, roof moss treatment, zinc moss killer, and industrial moss remover — delivers 35 percent active zinc content that binds to proteins and organic acids in moss cells, disrupting growth and causing die-off within days of application. The powder form allows precise dosing and mixing for spray application or ridge-line dry application. The 17 percent sulfur content provides additional benefits for treated surfaces. This industrial-grade formulation from St. Paul Brand is distributed by Marion Ag Service of St. Paul, Oregon — a Pacific Northwest agricultural supplier with direct regional availability. The 50-pound bag provides economical coverage for commercial roof maintenance operations. GutterAll supplies zinc sulfate monohydrate to cleaning contractors, roof maintenance professionals, and property management companies throughout the Pacific Northwest and nationally from the Damascus, Oregon location.

50 lb Bag | 35% Zn | 17% S | Powder Form | Water Soluble | CAS 7446-19-7 | For Industrial Use Only

Key Benefits at a Glance

Why Zinc Sulfate Works for Moss Control

Moss growth on roofs and in gutters is more than an aesthetic problem — it traps moisture, accelerates shingle degradation, blocks water flow, and creates conditions that promote rot and structural damage. Zinc sulfate monohydrate — also known as zinc sulphate, moss killer, moss control powder, roof moss treatment, zinc moss killer, and industrial moss remover — provides a proven chemical control method that eliminates moss at the cellular level. The zinc ions bind to proteins and organic acids within moss cells, disrupting normal metabolic functions and causing rapid cell damage. Treated moss typically turns yellow within days and dies off completely within weeks, after which it can be removed or allowed to weather away naturally.

The 35 percent zinc content in this industrial-grade formulation delivers higher active ingredient concentration than many retail moss control products, which often contain 5 to 15 percent zinc sulfate as their active ingredient. Higher concentration means more effective treatment with less product — a significant factor for commercial operations treating multiple roofs per day. The powder form dissolves readily in water for spray application, or can be applied dry along roof ridge lines where rain will gradually wash the zinc down the roof surface, providing ongoing protection. The 17 percent sulfur content contributes additional benefits and is a naturally occurring element in the zinc sulfate monohydrate compound.

The water-soluble nature of zinc sulfate monohydrate means it activates with moisture — rain or applied water carries the zinc across treated surfaces. This makes it particularly effective for Pacific Northwest conditions where regular rainfall naturally distributes ridge-line applications across entire roof surfaces. For gutter contractors, zinc sulfate treatment is often part of comprehensive gutter cleaning services — eliminating the moss that would otherwise continue to shed debris into the gutter system. The product is for industrial use only and requires proper handling procedures including respiratory protection and skin protection during application. GutterAll supplies zinc sulfate monohydrate to cleaning contractors and roof maintenance professionals throughout the Pacific Northwest and nationally. Contact sales@gutterall.com for contractor pricing. Available for in-store pickup at 19759 SE Sunnyside Rd, Damascus, OR 97089, local delivery in the Portland metro area, or shipping to all 50 states.

35% active zinc. 50-pound bag. Industrial grade. Pacific NW source.

Start a chat now or email sales@gutterall.com for contractor pricing.

Technical Explanation — Zinc Sulfate Moss Control Chemistry

Zinc sulfate monohydrate (ZnSO4·H2O) is an inorganic salt with a molecular weight of 179.5 g/mol. When dissolved in water or activated by rain, it dissociates into zinc ions (Zn²⁺) and sulfate ions (SO4²⁻). The zinc ions are the active moss-killing component. Zinc binds to proteins and organic acids within moss cells, interfering with essential metabolic processes. At the concentrations achieved by proper application, this binding overwhelms the moss cells' ability to function normally. The cells are damaged, turn yellow as chlorophyll breaks down, and the moss dies. The 35 percent zinc content in this formulation means each pound of product delivers 0.35 pounds of active zinc — significantly higher than most consumer-grade products. The 17 percent sulfur content is inherent to the zinc sulfate compound chemistry. Zinc sulfate is water soluble, which allows rain to carry it across roof surfaces from ridge-line applications. The zinc ions then bind to organic material on the roof surface, providing ongoing moss prevention. The compound is toxic to aquatic life, so runoff must be managed to avoid discharge to water bodies, ponds, or streams. The product is classified as an industrial herbicide for moss control on structures — it is not labeled for lawn or garden use at this concentration.

Work Applications — Where Zinc Sulfate Solves Problems

Zinc sulfate monohydrate addresses five primary challenges for gutter and roof maintenance contractors:

Application Methods — Dry vs. Spray

Industrial Grade. 35% Zinc. 50-Pound Bag. Professional Results.

Start a chat for fastest response or email sales@gutterall.com

What You Get — 50 lb Bag

Key Features and User Benefits

Zinc sulfate monohydrate 35% Zn — also known as zinc sulphate, moss killer, moss control powder, roof moss treatment, zinc moss killer, and industrial moss remover — is the professional-grade moss control solution for gutter and roof maintenance contractors. The 50-pound bag provides economical commercial quantity for contractors treating multiple properties. The 35 percent zinc content delivers higher active ingredient concentration than most retail moss products. The 17 percent sulfur content is inherent to the zinc sulfate monohydrate compound. Water soluble powder form allows spray application or dry ridge-line application where rain distributes treatment. St. Paul Brand from Marion Ag Service, St. Paul, Oregon. Chemical formula ZnSO4·H2O. CAS Number 7446-19-7. Molecular weight 179.5 g/mol. For industrial use only — proper PPE required during application. Toxic to aquatic life — avoid runoff to water bodies. For gutter contractors and roof maintenance professionals, zinc sulfate monohydrate is the proven moss elimination solution that prevents debris buildup and protects roof surfaces. GutterAll supplies zinc sulfate monohydrate to cleaning contractors and property maintenance professionals throughout the Pacific Northwest and nationally. Contact sales@gutterall.com for contractor pricing on bulk orders. Available for in-store pickup at 19759 SE Sunnyside Rd, Damascus, OR 97089, local delivery in the Portland metro area, or shipping to all 50 states. Monday through Friday 7am to 4pm, Saturday 9am to 2pm PST.

Why Contractors Stock Zinc Sulfate Monohydrate:

• 35% Active Zinc: Higher concentration than retail products
• 17% Sulfur Content: Inherent compound contribution
• 50-Pound Commercial Bag: Economical contractor quantity
• Water Soluble Powder: Dissolves readily for spray application
• Kills Moss at Cellular Level: Zinc ions disrupt cell function
• Prevents Moss Regrowth: Ridge-line treatment provides ongoing protection
• Rain-Activated Distribution: Natural coverage from ridge application
• Eliminates Gutter Debris Source: Dead moss stops shedding into gutters
• Value-Added Service Opportunity: Upsell moss treatment with gutter cleaning
• Proven Chemical Control: EPA-registered herbicide active ingredient
• Pacific Northwest Source: Oregon distributor, regional availability
• Multiple Application Methods: Dry or spray application flexibility
• Industrial Grade: Professional concentration for commercial use
• Visible Results: Moss yellows within days of treatment
• Cost-Effective Coverage: Approximately 1 lb per 1,000 sq ft

Product Specifications

Who Uses Zinc Sulfate Monohydrate

Application Guide — Professional Moss Treatment

1. Assess the roof: Determine extent of moss growth and appropriate treatment method. Heavy moss may require physical removal before chemical treatment.
2. Don appropriate PPE: Wear respiratory protection (N95 minimum or respirator), safety glasses or face shield, chemical-resistant gloves, and protective clothing. Zinc sulfate powder is irritating to skin, eyes, and respiratory system.
3. Plan for runoff management: Zinc sulfate is toxic to aquatic life. Ensure runoff will not discharge to water bodies, ponds, streams, or storm drains leading to waterways.
4. Choose application method: For prevention and maintenance, dry ridge-line application allows rain to distribute treatment. For active moss elimination, spray application provides direct contact.
5. For dry application: Apply powder along roof peak and ridges at approximately 1 pound per 1,000 square feet. Rain will dissolve and distribute the zinc across the roof surface.
6. For spray application: Dissolve powder in water according to your spray equipment and coverage requirements. Apply to moss-covered areas until thoroughly wet.
7. Allow treatment to work: Moss will begin yellowing within days. Full die-off typically occurs within 2-4 weeks depending on conditions and moss thickness.
8. Optional moss removal: Dead moss can be removed by brushing or power washing, or allowed to weather away naturally over time.
9. Schedule annual retreatment: For properties in moss-prone areas (Pacific Northwest, shaded roofs), annual treatment maintains ongoing protection.
10. Clean equipment and store properly: Rinse spray equipment thoroughly. Store remaining product in dry location in original or labeled container. Product does not expire when kept dry.

Industrial Grade. 35% Zinc. 50-Pound Bag. Proven Results.

Start a chat for fastest response or email sales@gutterall.com.

Mon-Fri 7am-4pm | Sat 9am-2pm PST | (503) 850-6784

Frequently Asked Questions

Safety Notice — For Industrial Use Only

HARMFUL IF SWALLOWED. DO NOT INHALE. CAUSES SERIOUS EYE DAMAGE. VERY TOXIC TO AQUATIC LIFE.

Required PPE: Wear suitable protective clothing, gloves, and eye/face protection during handling and application. Use respiratory protection — do not inhale dust. First Aid — Skin: Flush with water and wash thoroughly with soap and water. First Aid — Eyes: Rinse immediately with plenty of water and seek medical advice. First Aid — Ingestion: If swallowed, seek medical advice immediately. Environmental: Do not allow runoff to enter water supplies, ponds, streams, or storm drains. Very toxic to aquatic life with long lasting effects. Storage: Store in dry, labeled container. Keep out of reach of children. Fire: Will not burn. Spill: Sweep up with minimum dust and place in dry, labeled container. See Safety Data Sheet for complete information.

Order Zinc Sulfate Monohydrate 35% Zn — 50 lb Bag

St. Paul Brand industrial-grade powder. 35% zinc, 17% sulfur. Water soluble for spray or dry application. Professional moss control for roofs, patios, and walkways. CAS 7446-19-7. For industrial use only — proper PPE required.

Bulk orders and contractor pricing: sales@gutterall.com

Mon-Fri 7am-4pm | Sat 9am-2pm PST | (503) 850-6784

Zinc Sulfate Monohydrate 35% Zn — At a Glance

35% Active Zinc. 17% Sulfur. 50-Pound Bag. Water Soluble Powder. Industrial Grade Moss Control. St. Paul Brand. Pacific Northwest Source.

GutterAll — Professional Gutter Tools and Supplies