Flat Mossy Green Roof

Asphalt roof shingle defects.

Flat mossy green roof.

Identifying removing preventing algae fungus lichens moss on roof shingles. This thin layer on the top of the shingles expands and becomes wide thick and mat like. Here we discuss the causes of algae moss lichens or fungal growth on roof shingles the effects of these conditions and how to cure or prevent them. The seams between the shingles and the shingles edges also develop moss because they tend to be especially shaded.

The most effective method of cleaning algae and moss from a roof is with a 50 50 mix of laundry strength liquid chlorine bleach and water. These have been successfully i nstalled utilizing a variety of different methods described below. As a rule of thumb professionally removing moss will cost about 5 of what it would take to replace your roof altogether. Pre grown moss mats moss acres has now furnished moss for several green roof projects.

Removing moss and algae from a flat roof can seem like a never ending task. Most homeowners will have noticed that their flat roof is regularly invaded by the green pest and while it does no damage to flat roofing materials it can retain moisture which will accelerate wear and tear on the flat roof. Moss on a roof begins with a thin dusting of green that you may notice only from low angles. Using bleach is recommended by most shingle roof manufactures and the arma asphalt roofing manufactures association.

A standard roofing membrane and insulation layer is laid onto the underlying roof structure then a studded perforated drainage membrane such as oldroyd xv 20 greenxtra is used in addition to provide a drainage layer. Please contact our technical department on 01403 210204 or submit an enquiry for more information.