
from £35/session
A build-up of moss or algae on a roof isn't just cosmetic, it can trap moisture against tiles and slates and shorten how long they last. A roof cleaner working in Armagh will typically inspect the roof first to decide whether a straightforward softwash will do or whether heavier moss needs scraping off first, especially around chimneys and valleys where debris collects and drainage tends to slow down.
Tradespeople quoting for Armagh jobs often also cover Portadown, Banbridge and Craigavon, so the same company may already know the area well and may offer a better price if trips can be combined.
Because access and roof size affect price so much, it pays to compare a few quotes rather than accepting the first one that comes in, and to ask what's included in each, including any preventive treatment and clean-up afterwards. A written quote also gives you something to refer back to if any questions come up later.
Bark's data suggests most jobs cost between £400 and £1,000, roughly £8.50 to £14 per square metre. It depends on roof size, access, and whether it's a manual scrape and biocide treatment or a full steam clean.