Patio & exterior
KilrockPRO Patio, Driveway & Masonry Cleaner dupe
Why pay around £14.00 for KilrockPRO? The bulk active is Sodium metasilicate pentahydrate — 87% less per working litre than a typical shelf pack.
From the retail pack to the active and the mix
1 · Retail
KilrockPRO Patio, Driveway & Masonry Cleaner
5 litres · £14.00 typical snapshot
Water, sodium carbonate, EDTA and glycol ether
2 · Active
Disodium metasilicate
3% on the label
10213-79-3Na2SiO3·5H2O
Bulk Sodium metasilicate pentahydrate
3 · Mix
30 g/L (≈ bottle strength), then 1:20 for light stains
£0.36 per working litre · 87% less than the shelf pack
- Active
- Disodium metasilicate
- CAS
- 10213-79-3
- Dupe
- Sodium metasilicate pentahydrate
- Saving
- 87% / L
Saving is per litre of working-strength mix versus a typical pack price, not versus the DIY kit total. Shop prices move — always check the listing.
Label teardown
What the pack promises versus what the label chemistry actually is.
The marketing claim
“Shifts stains, oil and grease on patios and driveways”
The chemical reality
This is not Patio Magic (BAC) and it is not Mortar Clen (HCl). KilrockPRO is a dilute alkaline masonry degreaser — disodium metasilicate (CAS 6834-92-0) with soda ash and a chelator. Metasilicate pentahydrate crystals mixed at about 30 g/L match the bottle strength; then dilute 1:20 for light stains as the pack does.
Active vs filler
3% Disodium metasilicate · 97% carrier / filler — Water, sodium carbonate, EDTA and glycol ether
- Typical retail
- £14.00
- 5 litres
- Estimated active cost
- £1.80
- Scaled from bulk £12.00 / 1 kg
- Indicative markup
- 7.8×
- Snapshot maths, not a live shop price
The Marketing Claim & The Catch
A 5 litres pack of KilrockPRO Patio, Driveway & Masonry Cleaner typically retails around £14.00 in patio & exterior. That is a UK shelf-price snapshot for the maths on this page — not a live shop quote or a manufacturer RRP. Listings, sizes and deals move. The marketing line is that you are buying a finished lifestyle product, not a weighed chemical.
On the pack: Shifts stains, oil and grease on patios and driveways; Non-acidic super concentrate — up to 100 litres / 250 m²; and Pressure-washer compatible.
The catch: This is not Patio Magic (BAC) and it is not Mortar Clen (HCl). KilrockPRO is a dilute alkaline masonry degreaser — disodium metasilicate (CAS 6834-92-0) with soda ash and a chelator. Metasilicate pentahydrate crystals mixed at about 30 g/L match the bottle strength; then dilute 1:20 for light stains as the pack does.
- “Shifts stains, oil and grease on patios and driveways”
- “Non-acidic super concentrate — up to 100 litres / 250 m²”
- “Pressure-washer compatible”
Proprietary Blend & Dosage Breakdown
The labelled active is Disodium metasilicate at 3%. Everything else in the pack is water, sodium carbonate, edta and glycol ether.
At 3% active, most of what you pay for is carrier and packaging. The brand is selling convenience, fragrance and a label — not a uniquely potent molecule.
Branded working strength is whatever comes out of the bottle. The bulk alternative is 100% Sodium metasilicate pentahydrate, mixed to 30 g/L (≈ bottle strength), then 1:20 for light stains.
- Labelled active
- Disodium metasilicate
- 3%
- Carrier
- Water, sodium carbonate, EDTA and glycol ether
- Retail pack
- 5 litres · £14.00
The Active Chemical Alternative (Dupe Stack)
The dupe stack is Sodium metasilicate pentahydrate at 100% bulk. Indexed as CAS 10213-79-3, formula Na2SiO3·5H2O. Buy it as 1 kg for around £12.00 from Amazon UK.
Working strength: 30 g/L (≈ bottle strength), then 1:20 for light stains. Indicative cost £0.36 per diluted litre — 87% below a typical branded pack on a per-litre basis, before you reuse leftover bulk.
Follow the mixing method and the supplier SDS. Wear the listed PPE. Do not mix incompatible oxidisers, acids or ammonia.
- Causes burns. Nitrile gloves, splash goggles, outdoor ventilation. Always add powder to water. Never mix with acids or bleach.
- Dissolve 30 g of metasilicate pentahydrate per litre of cold water to land near the branded concentrate (SDS lists 1–5% disodium metasilicate in the jerry).
- Light stains: dilute that liquor 1:20 (250 ml into 5 L), scrub or brush, rinse. Heavy stains: 1:10. Oil patches: work a stronger paste and rinse thoroughly.
- Pressure washer: about 30 ml of concentrate-strength liquor per litre of feed water — follow your washer’s detergent guidance.
- 1 kg makes about 33 litres of bottle-strength liquor (then hundreds of litres of working wash). Keep off aluminium, galvanised steel and painted softwoods. Neutralise residues with a water rinse.
Dilution recipe
5 L sprayer
Working strength 30 g/L (≈ bottle strength), then 1:20 for light stains. Educational estimate from the listed ratio — check the SDS before you mix.
Chemical
150 grams
Sodium metasilicate pentahydrate
Water
5 litres
Carrier / diluent
0% concentrate · 100% water by working volume (solids are dissolved into the water share).
Required PPE
Loading calculator…
Side-by-Side Price & Potency Comparison
Head-to-head comparison
| Measure | Retail brandedKilrockPRO | Raw active dupeDupeStack |
|---|---|---|
| Product | Patio, Driveway & Masonry CleanerAmazon UK search — listing, not a confirmed seller | Sodium metasilicate pentahydrate |
| Pack / unit | 5 litres · £14.00 | 1 kg · £12.00 |
| Active | Disodium metasilicate at 3%Carrier: Water, sodium carbonate, EDTA and glycol ether | 100% bulkNa2SiO3·5H2O |
| CAS number | Not disclosed on pack | 10213-79-3 |
| Working strength | Ready-to-use pack | Dilute 30 g/L (≈ bottle strength), then 1:20 for light stains |
| Cost per litre | £2.80 / L typical pack | £0.36 / L mixed from bulk |
| Headline saving | Baseline | 87% cheaper |
| COSHH / PPE | Follow the branded SDS | Gloves. Chemical-resistant gloves (nitrile or neoprene)Eye protection. Indirect-vent splash goggles — not ordinary spectaclesVentilation. Use outdoors or with mechanical extraction |
Active ingredient and cheaper alternative — FAQ
Is KilrockPRO a patio biocide like Wet & Forget?
No. Wet & Forget and Patio Magic are quaternary ammonium biocides for algae film. KilrockPRO is an alkaline metasilicate degreaser for oil, grease and traffic grime. Different job. Use a quat for green film; use metasilicate for oily concrete.
Is this the same as soda ash or caustic soda?
Related alkalis, different salts. Soda ash is sodium carbonate (pool pH Plus). Caustic soda is sodium hydroxide (Oven Pride). Metasilicate is Na₂SiO₃ — a detergent builder that lifts grease on masonry. Do not treat them as drop-in swaps, and keep all three off aluminium and soft paint.
How do you mix the Patio, Driveway & Masonry Cleaner dupe stack?
Causes burns. Nitrile gloves, splash goggles, outdoor ventilation. Always add powder to water. Never mix with acids or bleach. Dissolve 30 g of metasilicate pentahydrate per litre of cold water to land near the branded concentrate (SDS lists 1–5% disodium metasilicate in the jerry). Light stains: dilute that liquor 1:20 (250 ml into 5 L), scrub or brush, rinse. Heavy stains: 1:10. Oil patches: work a stronger paste and rinse thoroughly. Pressure washer: about 30 ml of concentrate-strength liquor per litre of feed water — follow your washer’s detergent guidance. 1 kg makes about 33 litres of bottle-strength liquor (then hundreds of litres of working wash). Keep off aluminium, galvanised steel and painted softwoods. Neutralise residues with a water rinse.
DupeStack provides chemical concentration data and educational mixing guides only. Wellness pages compare food supplements, not medicines or prescribed treatments. Always review the supplier Safety Data Sheet (SDS) and comply with UK Health and Safety Executive (HSE) and COSHH regulations when handling concentrated substances. Mixing and storage are at your own risk. Some links are affiliate advertisements (Amazon Associates, eBay Partner Network, and Awin when those programmes are live). Commissions do not change listed concentrations or calculator output.
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More teardowns
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- Retail pack
- £34.005 litres
- Raw active
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- Retail pack
- £24.995 litres
- Raw active
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- Retail pack
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- Raw active
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£28.50Save 87% / L
Indicative DIY stack