Harlow, Essex CM18 7DQ Rooftogroundexteriors@outlook.com Open 7 days · 6am–9pm 01279 295996 AboutServices Service Areas Our WorkReviewsContact 01279 295996Request Free Estimate Home/Services/Render & Exterior Wall Cleaning Harlow · Essex · Hertfordshire # Render & Exterior Wall CleaningWalls Restored Without Repainting.Harlow, Essex & Hertfordshire. Modern silicone and acrylic renders attract algae like a magnet. Our SoftWash biocidal process kills the contamination at the spore and restores the original render colour — at a fraction of repainting cost, with long-lasting results. Get My Free Estimate 01279 295996 Free, no-obligation quote. No pushy sales. Family-run, Harlow-based. K-Rend & SilkRend approved methods SoftWash biocidal — no pressure damage Fully insured Half-day job for most homes 4+ years render specialism Service Overview ## Understanding render & exterior wall cleaning ## What it is Low-pressure SoftWash biocidal cleaning of K-Rend, Weber, Parex and other through-coloured silicone renders, painted render, pebbledash, monocouche, and traditional painted brickwork. ## Who it's for Any homeowner with green or black streaking down their render (especially under windows, eaves and gable ends); anyone considering repainting before realising cleaning costs a fifth. ## When you need it Spring through autumn for fastest biocide action. Year-round in dry conditions. Best paired with gutter clear and fascia clean for whole-house restoration. ## Why professional help matters Pressure-washing modern silicone renders can drive water through the substrate and damage the colour layer. SoftWash uses near-zero pressure and biocidal chemistry to clean from within — the manufacturer-approved approach. If left untreated ## The cost of doing nothing. - Algae on render holds moisture against the substrate, accelerating cracking and degradation. - Black streaks under windows become permanent staining within 3 years untreated. - Repainting dirty render fails within a season — every job becomes two. - Pressure-washed render often shows pressure-track marks that are visible for years. - A streaked, neglected render shouts 'neglected property' from the kerb. Common mistakes ## What we see go wrong. - Repainting instead of cleaning — 5× the cost, same end result. - Pressure-washing K-Rend — voids the manufacturer warranty. - Using bleach without a biocide — kills the surface but not the spore, regrows in months. - Trusting a window cleaner with a SoftWash kit but no chemistry training. Our Process ## A predictable system, from first call to clean-up - 01 ### Inspection Render type identified, contamination assessed, surrounding planting protected. - 02 ### Pre-Wet Foliage and adjacent surfaces wet-rinsed for protection. - 03 ### SoftWash Application Sodium hypochlorite-based biocide applied at zero pressure via reach systems. - 04 ### Dwell & Rinse 20-minute dwell, then gentle rinse — contamination falls cleanly off. - 05 ### Post-Treat & Inspection Final biocidal mist for residual spore-kill, then a walk-round with you. The Benefits ## What you actually get for the money. - ### Restores original render colour Customers consistently mistake cleaned render for newly applied. - ### Cheaper than repainting 80%+ saving vs full repaint. - ### Manufacturer-approved on K-Rend & SilkRend Won't void render warranties. - ### Long-lasting results Biocide continues working on airborne spores. - ### Damage-free SoftWash Zero-pressure system can't drive water through the substrate. - ### Bundles with gutter & fascia Whole-house refresh at meaningful saving. Deep Detail ## The technical bit — for the people who like to know ### K-Rend & SilkRend Through-coloured silicone renders favoured by modern builders. Hugely susceptible to algae bloom. Pressure-washing is explicitly warranty-voiding — SoftWash is the only sanctioned method. ### Monocouche & traditional render Cement-based traditional render handled with the same SoftWash chemistry. Painted render cleaned without disturbing the paint film. ### Pebbledash Surface texture traps algae deeply. Two-pass SoftWash typically needed; we quote accordingly. ### Painted brick Cleaned with milder biocide to avoid lifting weak paint films. Always test-patched first. ### Why SoftWash works Sodium hypochlorite kills the cell membrane of algae, lichen and bacterial biofilms. Combined with a surfactant it penetrates the texture and clears the contamination without physical impact. Rinse removes dead matter, biocidal residue protects against new spore landing for 18–24 months. ### Residential vs commercial Domestic gables, returns and full elevations our core. Commercial render — schools, offices, retail — done on quotation with method statements and out-of-hours scheduling. FAQ ## Straight answers to common questions How much does render cleaning cost? Quoted per elevation based on size, render type and access. Free, no-obligation quote. Will it damage my K-Rend? How long do results last? Will it harm my plants? Do you clean painted render? How long does it take? Will it lighten my paint colour? Are you insured? ## Bring your render back — without a paintbrush. SoftWash specialists. Half-day job. Free, no-obligation quote. Get My Free Estimate 01279 295996 Fully insured · Companies House #15556482 · Family-run · 4+ years ## Related services - Roof Cleaning & Moss Removal - Fascia & Soffit Cleaning - Pressure Washing ## We cover Based in Harlow CM18, working across Essex and Hertfordshire. HarlowBishop's StortfordBroxbourneWaltham AbbeyLoughtonBrentwoodWalthamstowChingfordGreat DunmowMuch Hadham ← Back to home·All services·Contact us Family-run exterior cleaning specialists serving Essex & Hertfordshire. Low-pressure washing, steam, hand-scraping and biocidal treatment — results that last years. Open 7 days, including weekends. 01279 295996 Rooftogroundexteriors@outlook.com 90 The Briars, Harlow CM18 7DQ, United Kingdom Facebook Opening HoursOpen 24/7 · Monday – Sunday CHECKATRADE9.85/10 · 96+ reviews Services - Roof Cleaning & Moss Removal - Gutter Clearing & Maintenance - Fascia & Soffit Cleaning - Pressure Washing - Driveway & Patio Cleaning - Conservatory Roof & Frame Cleaning - Solar Panel Cleaning - Render & Exterior Wall Cleaning - Exterior Window Cleaning Service Areas - Harlow - Bishop's Stortford - Broxbourne - Waltham Abbey - Loughton - Brentwood - Walthamstow - Chingford - Great Dunmow - Much Hadham - Epping - Sawbridgeworth - Hertford - Ware - Hoddesdon - Cheshunt - Chipping Ongar - Stansted Mountfitchet - Buckhurst Hill - North Weald Bassett Company - About Us - Our Work - Reviews - Contact © 2026 Roof to Ground Exteriors Ltd. All rights reserved. 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