GS-4

A cleaning agent for glass greenhouses that removes dirt, dust, soot and other contamination without brushing. Simply spray on the correct concentration and rinse with water within 5 minutes for a clean, undamaged surface.

Suitable for glass greenhouses only, used on both the inside and outside. Also used to remove AntiReflect at the end of its useful life. A double-concentrated version, GS-4 Xtra, is available for heavier contamination

Removes Dirt Without Brushing

No Hydrogen Fluoride Gas

Inside & Outside Use

Glass Greenhouses Only

Removes AntiReflect

A Deep Clean for Greenhouse Glass

Dirty glass doesn't just block light, it also gives fungi, bacteria and viruses a place to survive and spread. GS-4 removes dirt, dust, soot and organic materials without brushing, simply by spraying on the correct concentration and rinsing with water, restoring the glass to a clean, clear surface.

GS-4 works on both the inside and outside of the greenhouse, though the greenhouse must be empty and crop-free when applying it inside. It produces no chemical vapor effect during use, but is a strong product, so protective gloves, safety glasses and clothing are needed when handling it. It's also used to remove AntiReflect from the glass at the end of its useful life.

Diagram showing how GS-4 removes dirt from glass so more light passes through

Drone spraying a coating over a greenhouse roof

Spray and Rinse

Applied by machine or hand with a spray gun, then thoroughly rinsed with clean water within about 5 minutes.

Worker on a greenhouse roof applying a coating with a machine

Built for Glass Greenhouses

Developed specifically for glass, not suitable for plastic, acrylate or polycarbonate greenhouse covers.

Apply to a dry surface using a machine or a hand spray gun. Allow the product to react briefly, but don't let it dry on the glass, then rinse thoroughly with clean water within about 5 minutes.

Only use above 5°C, and avoid sunny weather since the product will dry too fast and can damage the glass. If applying on the inside, the greenhouse must be empty and crop-free.

For light contamination, dilute at 1:19: use 5 cans per hectare (2 cans per acre), mixed with 1,900 litres of water per hectare (201 US gallons per acre).

For heavy contamination, dilute at 1:9: use 10 cans per hectare (4 cans per acre), mixed with 1,800 litres of water per hectare (190 US gallons per acre). Either way, the product and water together add up to around 2,000 litres of spray liquid per hectare (roughly 211 US gallons per acre) when applying by machine.

GS-4 is suitable for glass greenhouses only, not plastic, acrylate or polycarbonate. Do not use on coated glass, or near fluorine-sensitive crops such as bulbs and tubers. For tempered glass, test a small area first and check clarity after rinsing.

If applying on the inside, the greenhouse must be empty and crop-free. GS-4 is a strong product, so protective gloves, safety glasses and clothing should be worn when handling it.

AntiReflect

A coating applied to the outside of the glass that increases usable light and lasts around 2 years. GS-4 is used to remove it at the end of its useful life.

GS-4 Xtra

A double-concentrated version of GS-4, using about half the product for heavier contamination. Suitable for the same glass greenhouses, inside and outside.

Why ReduSystems

The Right Solution for Every Season

Light is the most variable factor in greenhouse growing, yet many growers do not yet use it fully throughout the year. We help growers protect, improve and adjust crop performance in every season, with a solution matched to each stage of the growing cycle.

With decades of experience in light spectra, PAR and photosynthesis, we adapt every solution to the grower's crop, greenhouse and location. Our advice is based on science and real-world results, not guesswork.

Frequently asked questions

GS-4 is suitable for glass greenhouses only. It's not suitable for plastic, acrylate or polycarbonate greenhouses.

Only when applying on the inside. GS-4 can be used on the outside of the greenhouse at any time, but interior application requires an empty, crop-free greenhouse.

GS-4 is diluted with water and sprayed onto the glass by machine or by hand with a spray gun. Allow it to react briefly, then rinse thoroughly with clean water within about 5 minutes.

GS-4 Xtra is a double-concentrated version of GS-4, so it takes about half the product for the same level of contamination. Both are suitable for glass greenhouses only.

GS-4 is used to remove AntiReflect specifically, at the end of its roughly 2-year useful life. It does not remove the seasonal shading or diffusion coatings, such as ReduSol, ReduHeat or ReduFuse, those are removed with ReduClean or ReduClean for diffuse coatings instead.

Apply above 5°C, and avoid sunny weather, since the product will dry too fast in direct sun and can damage the glass if it isn't rinsed off in time.

Contact us

Talk to a ReduSystems Specialist

Every greenhouse faces different light and climate challenges, depending on the season, crop and greenhouse type. Choosing the right strategy can be difficult with so many factors to consider. Our specialists offer tailored advice based on your specific situation, helping you find the right solution for your crop, greenhouse and climate, all year round. Get in touch to discuss what works best for you.

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Our brands

GS-4

A Deep Clean for Greenhouse Glass

Quick Rinse Process

Shelf Life

Decades of R&D

Works Well With GS-4