Roof Moss Removal
Moss are those sponge-like rootless plants that absorb moisture resulting in your roof being constantly wet. They tend to grow in damp, shaded, cold areas with the absence of sunlight. Roofs are ideal for moss growth due to the way it collects rainwater during a downpour. They soak up moisture and keep your roof constantly moist. Moss reproduces by spreading its spores and a small patch of moss can grow to a bigger patch within a very short time.
Small amounts of moss growth on your roof is harmless. However, If left untreated, they can become large patches very quickly that can cause major damage and affect the structural integrity of your roof. As moss loves shaded areas, they typically grow in the crack between each roof tile or shingle. With time, as they become ticker, they lift and loosen the tiles or shingles and allow water through. This damage progresses from shingles to rotten underlayment and damaged framework. Large patches of roof moss cause the roof timber frame to rot leading to costly roof repairs or an expensive replacement.
Should moss be removed from the roof?
The simple answer is Yes. Better to avoid expensive repairs or roof replacements, moss should be removed from your roof tiles or shingles quickly especially if they cover a significant part of your roof. Moss can block gutters and the drainage outlets of your roof preventing the proper functioning of the water drainage system. Your roof is designed to run-off water and not to collect water.
As highlighted earlier, moss retains water and if left on the roof for long periods may result in cracks in the tiles especially in winter. Long term damage is possible. The proper functioning of the water drainage system prevents the roofing from freezing to pieces. Moss also grows in connecting areas of your roof and can weaken the bond where cement and other materials hold the roof.
When should I remove moss from my roof?
Roof moss grows actively in damp cold environments. Early spring, autumn and mild winters are excellent environments for moss growth. Moss grows very little in summer due to sunlight and the heat it brings.
The best time to remove moss from your roof is when it starts growing. Usually, they kick into gear in autumn time or early spring when there is a lot of rainfall. We recommend that you remove moss from your roof and treat your roof before the peak period of rains in autumn (around October).
As roof moss grows very quickly, it is always advisable to neutralise any growth as soon as possible so that the structural integrity of your roof is not compromised.
What is the best way to remove moss from a roof?
You can remove moss from your roof by yourself or use the services of a professional contractor. We highly recommend the later as they are equipped with the right tools, have the expertise and know the latest techniques to get the job done efficiently.
If you are removing moss yourself you will need the following tools – a stiff brush, a soft bristle brush, a long expendable pole, a roof scraper, garden hose with a sprinkler, a ladder, safety clothing and footwear, environmentally safe moss removal solution [or chemical] and plastic covering for your lawn, flower bed or garden. You should also have some water to clean the roof.
We recommend an experienced roofer or professional as they have a good handle on the tools and will apply treatment to the roof after cleaning. For roofs affected by moss, cleaning means you may not have moss for about 6 months. If the roof is cleaned and treated using a layer of coat to protect the roof, then you will not have moss growth for years.
Roof moss removal cost
We highly recommend the general maintenance of your roof to extend its lifespan and save you a lot of money. A roof that is well maintained will not need major repairs or replacement for a long while. Maintenance should consist of a roof inspection, cleaning the roof and fixing any minor roof problems like loose tiles, cracked tiles or shingles and even gutters or fascia. It is advisable to trim trees or their branches if they are close to your roof as they provide shade which is a good environment for moss growth.
It is clear that large patches of moss will damage your roof and may prevent the water drainage system of your roof from functioning properly. While cleaning your roof may save you some money, we advise using a professional as they have the expertise, know the latest techniques and have the tools to get the job done. Besides roof tiles and shingles are delicate and any mistake could lead to a costly error.
The estimated cost of roof moss removal is between £250 and £500 depending on the size of the roof and the location. You need to factor in the impact moss may have had on your roof. For instance, green moss is easier to remove than black moss. This also assumes that there are no broken tiles to be replaced and there is easy access to the roof. For larger homes like detached properties with a separate garage, it may cost between £750 and £1000.
Maintaining your roof is essential. It protects your roof and gives your home a great look.