Moss

Roof moss removal

Thick moss is scraped off by hand, then the roof is soft washed and treated to slow regrowth (RoofQuote.ie). RoofQuote.ie publishes €350 to €750 for a small moss removal job and €900 to €1,800 for scraping a semi-detached roof; HP Roofing gives €400 to €700 for a standard three-bed.

Why it grows, how it comes off, and what it costs.

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€900 to €2,500soft wash roof cleaning with treatment, RoofQuote.ie's national range
€400 to €700a standard three-bed with moderate moss, HP Roofing, Dublin
No high pressureon tiles or slates: low pressure and a biocide (WestClean)
13.5% VATon cleaning a house, the reduced rate, if the company is registered (Revenue)

FreeNo obligationOne company rings you, not fiveNothing booked until you say yes

Before and after

Real roofs, real photos

Real roof cleaning jobs, shared by the Irish company that did them. Each says where it was. The company we pass you to may not be the one that did these.

Before: Slate roof of a church, moss removed, Co. Meath — **Slate roof of a church, moss removed** Co. Meath

After: Slate roof of a church, moss removed, Co. Meath — **Slate roof of a church, moss removed** Co. Meath

Before: Slate roof, moss removed by hand, Co. Meath — **Slate roof, moss removed by hand** Co. Meath

After: Slate roof, moss removed by hand, Co. Meath — **Slate roof, moss removed by hand** Co. Meath

Before: Tiled roof with solar panels, cleaned, Co. Meath — **Tiled roof with solar panels, cleaned** Co. Meath

After: Tiled roof with solar panels, cleaned, Co. Meath — **Tiled roof with solar panels, cleaned** Co. Meath

An AI preview of your own photo, free. Your photo isn't kept, and the real job is priced from the real roof.

Prices

What moss removal costs

Job	Published price	VAT	Source
Small moss removal job	€350 to €750	VAT not stated	RoofQuote.ie
Manual moss scraping, semi-detached house	€900 to €1,800	VAT not stated	RoofQuote.ie
Small roof, light moss (terrace or semi)	€300 to €450	VAT not stated	HP Roofing
Standard three-bed, moderate moss	€400 to €700	VAT not stated	HP Roofing
Large detached, heavy moss	€700 to €1,200	VAT not stated	HP Roofing
Heavy moss removal, a m²	€18 to €35	VAT not stated	RoofQuote.ie
Moss treatment or biocide add-on	€150 to €400	VAT not stated	HP Roofing

Why it grows

Why moss grows on Irish roofs

Damp weather, shade, trees and north-facing slopes (RoofQuote.ie). Older, porous tiles hold moisture and moss more than smooth modern ones (HP Roofing). It holds water against the tiles, blocks gutters and slows drainage. Moss itself rarely causes a leak, but constant damp speeds up wear on tiles and mortar.

How it comes off

Three steps, in order

Scrape: by hand, working down the roof, the gentlest method on natural slate (HP Roofing).
Soft wash: biocide at low pressure to kill what's left at the root.
Treat: a biocide left on the roof to slow regrowth.

Worth it?

When it's worth doing

HP Roofing's view: worth it if the roof is sound and the moss is causing damp, blocked gutters or slipping tiles; think twice on a roof 30 or 40 years old and near replacement. Cleaning doesn't fix leaks, worn slates or failed flashings.

See it first

Your roof clean, on your own photo

Take a photo of the house from the road and see the roof without the moss and streaks before anyone quotes. Free, in under a minute.

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We pass it to one company that covers your county.
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A photo that works

Daylight, from the footpath or the garden.
The whole roof in the shot, ridge to gutter.
The worst side: usually the north-facing slope.
Never go up on the roof to take it.

FAQ

Questions people ask

Can I remove roof moss myself?

From a ladder at the gutter, a little. On the roof, the HSA calls roofwork a high-risk activity and its code records 30 deaths on roofs in eight years. Pay an insured company for the whole roof.

How long before the moss comes back?

See how long it lasts: from 6 months in the west without treatment to a few years with it, on the sources here.

Does moss damage a roof?

It holds moisture against tiles and blocks gutters; it can lift slates over time (HP Roofing).

Keep reading

Related guides

Where these numbers come from (2 public sources, checked 3 November 2026)

Sources (3)

Prices and facts on this page were checked against these published pages. We are not connected to these businesses.

RoofQuote.ie: roofquote.ie
HP Roofing: hproofing.ie
WestClean: westcleanpropertycare.ie