Product Overview
Viper Renew is the acid product in the range, for tile, grout and stone that has been neglected for years. It works on the acid side of the pH scale to remove hard water deposits, soap scum and efflorescence that alkaline cleaners cannot touch.
Important — It Removes a Thin Layer of Grout
Viper Renew works by removing a very thin layer of the grout surface, taking the embedded soil and deposits with it. That is how it renews the surface, and it is not reversible.
Use it when other cleaners have failed, not as a maintenance product. Pretest in an inconspicuous area and mask off surfaces that should not be touched.
Never on Calcareous Stone
Marble, travertine and limestone are calcium carbonate. This product is designed to dissolve calcium carbonate.
Establish what the stone is before it goes anywhere near a floor. If you are not certain, do not spray it.
Choosing Across the Viper Range
The soil decides the chemistry, and the pH direction decides the risk. Alkaline products lift greasy and organic soil; the acid product dissolves mineral deposits. They are not interchangeable.
| Product | pH direction | Use it for |
|---|---|---|
| Viper Venom (CR22GL) | High alkaline, solvent fortified | The general heavy-soil tile and grout prespray. Also fire and smoke work. |
| Viper Venom Powder (CR23A) | High alkaline, solvent fortified | The same job in powder form — greasy restaurant soils, and cheaper per litre made up. |
| Viper Peroxiblast Powder (CH48A) | Alkaline, oxygen activated | Concrete degreasing — oils, fats and greases. Not for natural stone. |
| Viper Peroxibright CTG (CH41GL) | Oxygen activated, self-neutralising | Cleaning and brightening grout without acids or chlorine bleach. |
| Viper Renew (CH49GL) — this product | Acid, organic | Mineral deposits — hard water, soap scum, efflorescence. When alkaline products have failed. |
Alkaline first. Most tile and grout soil is greasy and organic, and that is what the alkaline products are for. Reach for the acid only when what is left is mineral.
Manufacturer's Claims
Bridgepoint states that the proprietary organic salt in Viper Renew is twice as effective as phosphoric acid at dissolving calcium carbonate, without unpleasant fumes, and that it is classified as only a mild skin irritant — positioning it as a safer alternative to aggressive acids such as phosphoric and muriatic.
Those are the manufacturer's figures and comparisons. CCW has not independently verified them. "Safer than muriatic acid" is a meaningful statement, but it is not the same as safe: this is still an acid, it still removes grout surface, and it still needs the full precautions on the label.
Standing Rules for Hard Surface Chemistry
- Pretest in an inconspicuous area, every job. Tile, grout and stone vary, and so does what has been done to them before.
- Never mix products. Acid and alkaline neutralise each other and waste both; acid mixed with chlorinated products can generate chlorine gas.
- Never let it dry on the surface. Dwell, then clean and extract while it is still wet.
- Rinse thoroughly. Residue left in grout attracts soil and the floor looks worse in a month than it did before you cleaned it.
- Ventilate, and keep children and pets out of the area during application and drying.
- Know your stone. Marble, travertine and limestone are calcareous and are attacked by acid. Ask before you spray.
Tools
Designed to work with rotary hard surface extractors such as the Hydro-Force SX-12 (AW104) and SX-15 (AW105), and usable with any hard surface brush or mop system. Apply with a pump-up sprayer — see the TCBS (AS16A) for solvent-bearing chemistry, or the AS14A for water-based and acid products.
Dangerous Goods
This product ships as dangerous goods. See Dangerous Goods — shipping surcharges apply.
Frequently Asked Questions
When should I use it?
When alkaline cleaners have failed and what remains is mineral — hard water, soap scum, efflorescence. Start with Viper Venom (CR22GL).
Can I use it on marble or travertine?
No. Those stones are calcium carbonate and this product dissolves calcium carbonate.
Does it really remove grout?
Yes, a very thin surface layer, and that is the mechanism rather than a side effect. It is not a maintenance product.
Is it safer than muriatic acid?
The manufacturer positions it that way and classifies it as a mild skin irritant. It is still an acid and still needs full precautions.
Do I need to neutralise afterwards?
Follow the label. If you want brightening without a neutralising step, Peroxibright CTG (CH41GL) is self-neutralising.
Documents
What We See in the Field
The acid gets reached for too early. Most tile and grout soil is greasy and organic, and an alkaline prespray with proper dwell does the job without removing any grout. Renew is the last resort it says it is — and on the wrong stone it is an expensive mistake.
