Problem Solver
Window Cleaning Problems & Solutions
Recognise the cause of common exterior-cleaning problems, understand the practical options and know when professional help is the safest choice.
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Every resource links to the most relevant service, price and location information, helping you move from research to the right next step.
Problem pages begin with the visible symptom rather than assuming a solution. Dirt, mineral marks, algae, moss, gutter overflow and slippery paving can look straightforward while having several possible causes. Each guide separates removable contamination from damage, drainage or repair issues and explains when professional assessment is appropriate. This helps prevent aggressive treatment of the wrong material and connects the reader with the most relevant service and maintenance guidance.
Why Windows Stay Dirty
Understand why windows look dirty, how London pollution, pollen, frames and rain contribute, and when professional window cleaning is the right solution.
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Hard Water Marks on Windows
Learn how hard-water marks form on windows, how they differ from ordinary dirt and when professional glass restoration may be needed.
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Algae on Window Frames
Find out why green algae develops on uPVC and other window frames, how professionals remove surface growth and how to reduce its return.
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Moss on a Conservatory Roof
Understand why moss grows on conservatory roofs, the risks of unsafe removal and how controlled professional cleaning restores accessible panels and bars.
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Blocked Gutters: Signs and Solutions
Spot the signs of blocked gutters, understand common causes and learn how professional ground-based gutter clearing protects London rooflines.
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Overflowing Gutters During Rain
Learn why gutters overflow during rain, how to distinguish blockages from defects and when professional clearing or repair is required.
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Black Streaks on Gutter Exteriors
Understand black streaks on external gutters, how oxidation and runoff differ from loose dirt and what professional cleaning may realistically improve.
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Why Patios Turn Green
Discover why patios turn green in shade and damp conditions, how professional surface cleaning works and how to slow algae regrowth.
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Slippery Patio: Causes and Safe Cleaning
Learn why patios become slippery, how algae, moss and drainage contribute and when professional cleaning or repair is the appropriate response.
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Dirty Glass Roof: Causes and Cleaning
Learn why roof glass becomes dull, how skylights and conservatory roofs are safely cleaned and which defects cleaning cannot fix.
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