White Mold On Roof Trusses

Attics tend to have the perfect conditions for mold growth hot humid and an abundant food source with the wood sheathing.

White mold on roof trusses.

In the vast majority of cases the mold growth is caused by condensation. Fungus and mold will grow on the trusses if the lumber moisture content exceeds and remains above 20. Mold growth provided it is not just cosmetic mold which can simply be left alone can be cleaned from wood surfaces by blasting scrubbing or even simple surface wiping depending on the surface accessibility and. Generally tearing off a roof and roof sheathing and perhaps roof framing to remove mold would not be sensible nor cost justified.

This is why it s less common to see mold growth on base trim after a flooding event. Note the roofing felt many old roofs are upgraded by installing roof lining felt this. Mold growth in an attic comes as a consequence of excess moisture. If there is a leak in the roof plumbing or windows the mold will reappear if the water is.

Home house mold what causes attic mold how to remove it. White mold tends to grow in high humidity environments rather than areas suffering from total saturation. When looking for attic mold trace both leak. The photo at page top shows white attic mold on the roof sheathing and rafters and some brown or black mold on the attic side of ceiling drywall where we pulled back insulation.

In the attic photograph at left we show a mix of green gray and white attic mold. To prevent future mold growth remove the source of moisture causing it. Attics are one of the most common areas of mold growth in the home. Mold growth on attic roof sheathing is a common issue in cool climates such as the pacific northwest.

Prevent future mold growth. Indicates condensation increase ventilation add soffit or ridge vents apply mould cleaner treat with boracol 10rh. Typical roof mould damp cold timber condensation mold growth. The vast majority of attic mold is caused by humidity which is why white mold growth is common here.

If the wood used in trusses is kiln dried the moisture content is equal to or less than 19. This growth will cease once the moisture content drops to 19 or less.