The exact line between blackened stone and pristine masonry.
We strip decades of lichen, black spot, and organic traffic film from block paving, natural stone, and architectural render using calibrated thermal rotary washing and biological softwash chemistry.
Calibrated pressure.
Substrate-matched chemistry.
Zero structural abrasion. Every exterior material requires a distinct hydrodynamic velocity and chemical compound to eradicate organic growth at the root without etching delicate aggregate.
Block Paving & Cobblestone
High-velocity flat-surface rotary cleaning strips black spot lichen, moss anchors, and entrenched silt. Completed with a post-wash sterilization wash to neutralize sub-surface root spores before precision kiln-dried re-sanding.
Patios, Indian Sandstone & Decking
Delicate natural stone, porcelain, and hardwood decking suffer severe surface gouging under standard pressure. We apply an isothermal detergent blend followed by calibrated wide-angle rinse passes to restore original quarried hues.
K-Rend & Cladding
Zero-pressure sodium hypochlorite and biocidal softwash formulas designed specifically to dissolve red streak algae and black biofilm without compromising render integrity.
Roofs & Rainwater Gutters
Manual profiled tile scraping removes heavy moss blanket without walking on roofs. Followed by camera-monitored high-suction gutter clearing and fungicidal washdown.
Conservatory Roofs
Purified, demineralized water fed through telescopic composite poles with delicate non-marking boar bristle heads to wash polycarbonate and self-cleaning glass spotless.
Unsure of your substrate composition?
Upload a clear photo with your quote request for instant chemical analysis.
Post-Wash Stabilization
& Long-Life Barrier Sealants
High-pressure washing removes debris and opens substrate pores. Our clinical-grade add-ons reinstate structural friction, lock out moisture infiltration, and inhibit micro-spore regrowth.
Applied exclusively when substrate moisture levels read under 12% via calibrated pinless meter, ensuring permanent cross-linking without trapped haze.
Kiln-Dried Silica Re-Sanding
Full compaction of ultra-fine sub-0.5mm sterile silica into cleared block paving joints to restore interlock stability and stop weed establishment.
Penetrating Fluoropolymer
Sub-surface micro-impregnation for Indian sandstone, granite, and porcelain. Leaves natural finish while repelling barbecue oils and atmospheric soot.
Polyurethane Wet-Look Coat
Hard-wearing acrylic/polyurethane membrane creating a satin sheen that enriches natural aggregates, binds joint sand, and resists tire plasticizer marks.
Residual Biocidal Barrier
High-purity DDAC quaternary ammonium compound wash left to cure within monocouche and K-Rend, terminating invisible micro-lichen spores for 24+ months.
Clinical precision in every pass.
High-pressure rotary extraction and softwash biocide sterilization deliver stark, uncompromised before-and-after contrasts across weathered residential architecture.
Pre-Clean Diagnostics
Severe Moss & Black Lichen Encroachment
Compacted weed growth in jointing sand with deep porous organic staining.
250 Bar Extraction + Re-Sand
Full Color & Interlock Restoration
100% biological eradication with sterile kiln-dried sand stabilization.
Pre-Wash Condition
Aggressive Gloeocapsa & Red Algae Bloom
Deep cellular spore colonization across north-facing modern monocouche facade.
Low-Pressure Chemical Sterilization
Zero Substrate Gouging or Damage
Algaecide kills spores at the root with lingering residual protection against regrowth.
Surface Deterioration
Deep Fossilized Black Spot Spores
Standard domestic pressure washers fail to remove these stubborn fungal roots.
Hypo-Wash + Precision Rotary
Revealing Original Geological Tones
Flawless chemical lift without eroding the soft natural sandstone veins.
Manual Scrape & Biocide Softwash
Protects delicate tile profiles and prevents costly gutter blockages and internal damp.
Slip-Resistance & Fiber Restoration
Removes lethal slime films without furring or gouging natural timber grain.
Pure De-Ionised Water Decontamination
Spotless, smear-free crystal clarity with sealed rubber gasket safety guaranteed.
Have a difficult surface or stubborn black lichen?
Transparent m² Pricing.
No hidden variables.
Exact rates calibrated by surface type, organic build-up depth, and post-treatment sealing requirements. Final quotes confirmed digitally in under 2 hours.
Block Paving & Patios
High-flow rotary wash, deep lichen extraction, kiln-dried re-sanding, and anti-fungal rinse.
Min. charge £180 (up to 30m²)
- Full rotary steam wash (up to 150°C)
- Joint stabilization & kiln-dried re-sanding
- Biocidal residual wash to prevent moss return
- Optional Nano-Sealing: +£4.00/m²
Render & K-Rend Care
Zero-pressure chemical sanitization for delicate modern colored renders and architectural cladding.
Min. charge £240 (up to 30m²)
- Non-abrasive, zero surface gouging
- Kills red, green & black algae spore roots
- Neutralizing wash rinse protects window trims
- Multi-Story Access Pole: Included
Roof Scraping & Gutters
Manual profile-scraping, deep vacuum gutter clearance, and industrial biocide steam infusion.
Min. charge £350 (up to 30m²)
- Tile-matched scraping blades (No pressure blast)
- Camera-verified gutter clearance
- 3-Year clear-roof biocidal protection
- Conservatory Roof Add-on: from £120
Standard UK Driveway Sizes
Surface Quote & Digital Diagnosis
Supply your surface metrics and an overhead or close-up photo. Our technical wash technicians return an itemized calibration quote within 45 minutes.
- 01 Self-Contained Power: Industrial diesel steam-boilers; independent generator supply on-site.
- 02 Bio-Safe Chemical Formulation: HSE-approved sanitizers safe for pets, lawns, and ornamental borders.
- 03 £5,000,000 Indemnity: Full commercial and residential public liability coverage attached to every site.
Speak directly with an exterior surface specialist (Mon–Sat: 07:30 – 19:00).