Moss & mould treatment in Christchurch
Kill the growth. Keep it gone.
Christchurch damp and shade grow moss, mould and lichen on everything that holds still — roofs, paths, fences and south-facing walls. Streb treats it at the root so it dies, weathers off and stays away. Free quotes — call or text 022 343 2679.
Roofs get treated, never blasted
Waterblasting a roof strips granules off tiles and forces water where it shouldn't go. The right approach is a treatment: applied gently, it kills the moss and lichen, which then dries and weathers off naturally over the following weeks — no damage, no leaks.
Slippery green paths are a winter hazard
That green film on shaded concrete is an accident waiting to happen, especially for older visitors. Treating it kills the growth deep down — and pairing treatment with a waterblast gets you instantly clean *and* slow to regrow.
For instant results on hard surfaces, combine treatment with waterblasting. Cladding grime is a job for house washing, and mossy gutter lines come right with gutter cleaning.
Streb covers the whole city and surrounds — from the CBD to the Port Hills, Selwyn and Waimakariri. See the full service area.
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Common questions
How long does moss treatment take to work?
The growth starts dying within days and browns off over a few weeks, then rain and wind weather it away naturally. Roofs typically look fully clean after a couple of months — without a single tile being blasted.
Is the treatment safe for pets and gardens?
Yes, applied properly — Andy uses appropriate products, keeps overspray off garden beds and rinses down where needed. Keep pets off treated paths until dry, and you're away.
Why not just waterblast the moss off the roof?
Because high pressure damages roofing — it strips the protective surface off tiles and can force water under the cladding. Treatment gets the same clean result and your roof lives longer.
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Ready to get it sorted?
Free quotes, friendly service, and no job too big or too small. Call or text Andy today.