The Mark Cave Softwashing Podcast

Mark Cave breaks down why black spots on patios are actually anchored lichen rather than simple dirt, and explains why high-pressure blasting often causes permanent stone damage. Discover the step-by-step professional softwashing workflow, from chemistry and dwell time to long-term biocide treatments.

Mark Cave breaks down why mortar joints are the sacrificial weak point on brick and stone walls, covering the physical and chemical risks of improper washing. Learn how to inspect pointing before quoting, manage absorption, and protect your business from costly repointing claims.

Mark Cave breaks down the common mixing errors exterior cleaners make when diluting sodium hypochlorite, explaining how to calculate accurate applied percentages using total parts. Learn recommended surface strengths, batch mixing tips, surfactant dosing, and essential chemical safety practices.

Mark Cave breaks down why leaving chemical wash-off to the rain is a dangerous myth and explains how unrinsed residues cause internal crystal growth and surface spalling on masonry. Learn the critical difference between terminating oxidisers and leaving residual biocides, alongside best practices for low-pressure rinsing, managing trap zones, and protecting surrounding vegetation.

Mark Cave breaks down how softwash chemicals react with architectural metals like aluminium, lead, zinc, and powder coatings, and how overspray or runoff can cause permanent damage. Learn the essential metal survey checklist, protection protocols, and documentation habits needed to safeguard surfaces and protect your business.

Mark Cave breaks down how porosity and water absorption dictate your chemical performance, why pre-soaking timber protects wood while ruining black spot treatments on stone, and how to properly manage dwell times across different substrates.

Mark Cave explores why promising multi-year results or "like new" finishes is a costly gamble that leads to unpaid callbacks and damaged surfaces. Learn how to protect your business by guaranteeing professional workmanship, managing client expectations, and setting up recurring maintenance plans.

Mark Cave explains how a five-stage Professional Job Pack—from the pre-clean survey and site-specific RAMS to application logs, troubleshooting and customer handover—helps contractors work more safely and consistently. He shares a practical first step for building your own system, and where to find further professional training and resources.

Mark Cave explains why a safety data sheet is not a COSHH assessment, and how to turn product information into a site-specific plan covering application, mixing, public safety, runoff and emergencies. He shares a practical challenge for your next job and explores how professional training can help you work safely and confidently.

Mark Cave explores how cold, heat, rain and wind affect softwashing chemistry, dwell time, plant protection and job planning. Learn practical ways to adapt your methods to the weather, avoid costly mistakes and work more professionally.