Blog
Straight answers to the questions people ask before they get in touch: why mould keeps coming back, what condensation really is, and how to choose window film for the glass you actually have.
The Simply Filtered blog is written by Duncan Ridley, an independent mould and condensation assessor covering London inside the M25. Each article answers one question in plain English, with links to GOV.UK guidance and to glass and window film industry sources.
Mould and health
What damp and mould can do to your health, who is most at risk, whether black mould is worse, and why the fix starts with the damp, not the mould.
29 September 2026 · 7 min read
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Mould and condensation
You clean it, it comes back, usually in the same corner. Why that happens on walls, ceilings, bathrooms and bedrooms, and what actually changes it.
27 September 2026 · 8 min read
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Window film
Film can crack glass when it's matched to the wrong window. How that happens, which glass is most at risk, and what to check before you buy.
27 September 2026 · 7 min read
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