What's The Best Way of Removing Moss From Roof Tiles?

Moss on Roof Tiles

Why do you need to remove moss and mould from your roof?

Many people believe that moss build up on your roof is nothing but an eye sore and the only reason to remove the moss and clean the roof is for cosmetic purposes, however this is far from the truth!

Moss and mould build up can, and will, damage your tiles, which leads to cracks and breaks and will lead to rotting breathable membranes and battens, as well as making your loft space damp.

Moss and mould can absorb water and when the weather turns frosty, the moss will freeze, which causes cracks and fissures in your tiles. Cracks allow water ingress, which in turn leads to damp in your roof, leaks and can cause the tiles or roof slates to break and fall of the roof completely.

An issue that can initially appear to be little more than an annoyance, can really ramp up repair costs, so it is strongly advised that moss and mould is removed quickly, especially in the summer, heading into the cooler months of Autumn and Winter.

Everything you need to know about removing moss from roof tiles

Removing moss and mould can be challenging without the correct equipment and solutions. Your biggest ally in killing moss and removing it from your roof will be a moss remover solution, such as Cromar Fugicidal Wash. Fungicidal wash kills the moss and allows for an easier removal, lessening the chance of breaking your tiles with additional force from brushes.

Contrary to popular belief, a pressure washer SHOULD NOT be used as it will, at best, damage the surface of your roof tiles or roof slates and at worst can actually break them. You should use a stiff and soft broom or brush. If you are able to connect a brush to an extension pole, you will find it useful to reach the apex of your roof from your ladder, as you will want to minimise foot traffic onto your roof for both safety and prevention of damage to the roof tiles or roof slates.

How to Remove Moss From Your Roof Tiles

You will need:

  • Safety glasses or goggles
  • Rubber gloves and other protective clothing such as a hat
  • A ladder
  • Fungicidal Wash solution
  • A large spray bottle
  • A scrub brush
  • A long-handled soft-bristle brush

Start by applying the Fungicidal wash, either by brush or spray (if you have a low pressure garden sprayer) and leave to soak for at least 1 hour.

Use a stiff bristled brush to scrub your roof, you should find that most of the moss will come away easily.

Once the majority of the moss has been removed, you may find marks from the moss that has been removed still on your roof. Apply a second coat of Fungicidal Wash and leave for 24 hours.

Use your stiff brush to remove the remaining moss. Use your soft brush to clean anything remaining marks and any white deposits that have formed.

When Cromar fungicidal wash is applied to a roof, it will help to prevent moss growth for up to 6 months, and should be applied twice a year. 

Fungicidal Wash is manufactured in Britain by leading construction materials manufacturer Cromar Building Products.

Roof covered in moss and mould

Pricing & availability:

To discuss pricing and the availability of Fungicidal Wash please call us on 01737 763008 or email us here.

Where can I find roofing solutions near me?

You can view and order materials for roofing maintenance in any of our branches listed below or we can deliver nationwide:

Dorking, Surrey branch

Redhill, Surrey branch

Esher, Surrey branch

East Grinstead, West Sussex branch