Learn why high-pressure cleaning can damage UK roof tiles, force water into the structure, and even create asbestos risks on older materials. We also cover why softwashing became the safer standard, plus the key workflow and compliance steps for doing roof cleaning professionally.
Episodes (45)
This episode breaks down the risks of cleaning concrete, clay, and natural slate roofs with high pressure, and explains why old cement-fibre tiles can hide a serious asbestos hazard. It also covers safe roof diagnostics, gutter protection, and why low-pressure softwashing is the professional alternative.
Learn why bleach can trigger bright orange rust streaks on silicone render and how to stop making the stain worse. The episode covers oxalic-acid rust removers, the role of surfactants, and why strong brick acid can permanently damage delicate surfaces.
Mark Cave breaks down the safe way to clean decking and fences with sodium hypochlorite, explaining why pre-wetting, using a mild 1% mix, and rinsing within 20 minutes are essential. He also covers oxalic acid brightening, when to avoid bleach on hardwoods, and the best biocide alternative for delicate timber.
Mark Cave breaks down the myth of long-lasting roof biocide, explaining why rain quickly washes chemicals off pitched roofs and why stain-free guarantees are really about natural regrowth cycles. He also covers the porous-render exception, showing how deep biocide treatment can support ongoing maintenance plans and recurring revenue.
Mark Cave breaks down the physics behind roof damage and explains why high-pressure jet washing can force water under tiles, strip protective coatings, and create leaks. He then walks through an 8-step safe roof cleaning workflow using manual scraping, low-pressure biocide application, and a slow-clean approach for longer-lasting results.
Why Pressure Washing Roof Tiles is the Wrong Approach A Message for Homeowners and Roof Cleaning Professionals
What REALLY Happens Inside a Softwashing Training Course
What are roof tile manufacturers saying about jet washing roofs
Using Social Media and Google Ads to Generate Prospects for Your Exterior Cleaning Business
Understanding the Legal Use of Sodium Hypochlorite in Softwashing
Stop Guessing Your Softwash Mix, Learn It Properly on TikTok
Softwashing Didnāt Bleach Your Roof Tilesā¦ Hereās What Really Happened
Softwash Dwell Time- Better Results Without Damage
Is Sodium Hypochlorite Illegal- The Truth About Softwashing SH
How to Find Work When Starting or Growing an Exterior Cleaning Business
How Adding Softwashing Can Transform Your Exterior Cleaning Business
Mark Cave busts the fear around sodium hypochlorite in UK exterior cleaning, explaining why using diluted bleach is not a criminal offense and how legality really depends on product marketing and biocide claims.
He also covers COSHH, customized safety data sheets for working dilutions, and the environmental controls needed to keep wash water out of surface drains and protect commercial clients.
Mark Cave busts the myth that roof biocides can protect tiles for years, explaining why weather quickly washes them away and why clean roofs stay clear mostly because biology takes time to return. He then covers the one big exceptionāporous renderāplus the two-step cleaning process and maintenance upsell that can turn a one-off job into recurring revenue.
Mark Cave breaks down the science of surface tension and shows how surfactants help softwash mixes penetrate deep into lichen, moss, and biofilms without relying on harsh pressure. He also covers how smarter dilution can reduce chemical use, protect plants, and improve your profit margins.
An introduction to softwashing: low-pressure cleaning, specialised solutions, key benefits, and where itās used on homes and commercial buildings.
Learn why high-pressure roof cleaning can drive water under tiles, damage concrete, clay, and slate, and create serious safety hazards at height. The episode also walks through a safer softwashing workflow, from roof surveys and manual moss removal to low-pressure biocidal treatment and long-term maintenance.
Learn why dry timber and strong bleach can ruin cedar decks, and how proper pre-wetting keeps sodium hypochlorite working only on surface algae. The episode also covers a safe 1% mix, surfactant use, rinsing, and when to finish with a wood brightener or switch to a gentler biocide.