Fungus On Roof Timbers

In the vast majority of cases the mold growth is caused by condensation.

Fungus on roof timbers.

The first one we will talk about is algae. Re roofing with lining lining papers sarking roofing felt can cause severe mold growth and rot due to reduced ventilation. When seeing under the microscope the body of the mold will look like filaments. Excessive ceiling insulation pushed down into the roof edges can also cause condensation and mold growth because it frequently blocks off the eaves or soffit ventilation.

Mold growth on attic roof sheathing is a common issue in cool climates such as the pacific northwest. This fungus is particularly damaging to the roof itself when not taken care of as soon as it s noticed. Dry rot fungus is often thought of as a building cancer rampaging through buildings and rapidly destroying any timber in its path. There are four common types of roof fungus that cause the most problems whether it be damage to your home or your health.

Algae will devour your shingles and is also attracted to moisture. Alternatively it may be classified as either dry rot a brown rot caused by one fungus serpula lacrymans or wet rot white or brown rots caused by various fungi commonly coniophora puteana. They can appear as numerous white spots or blots or even small fibers when the growth is uncontrollable. This occurs when the temperature of the sheathing drops below the dew point creating a thin layer of moisture on the substrate.

The fungus which thrives in moist unventilated conditions will penetrate brickwork to get to more timber and can cause widespread destruction of structural timbers skirting boards and door frames and wood flooring.