White Patches On Roof Timbers

The white powder wipes off readily with just your hand the vertical line was created by doing this.

White patches on roof timbers.

When you see white spots on wood they are almost certainly white mold since efflorescence cannot appear on wood. Where the fungus is exposed to light it often has a lemon yellowish tinge. Typical roof mould damp cold timber condensation mold growth. Indicates condensation increase ventilation add soffit or ridge vents apply mould cleaner treat with boracol 10rh.

Algae lichens and moss for example. If you have mold covering large sections of sheathing all over the attic the culprit is. If the mold appears in localized patches it is likely caused by leaks from windows plumbing or roofs. The client will certainly expect an explanation for this white material on the roof rafters in the attic.

After all some mold shows up as a white powdery material but more often in a crawl space than an attic. The roof sheathing and trusses were dry but there is plenty of evidence that they had condensation problems prior to installing the new roof metal ridge vent the length of the house and baffles to keep the soffit vents clear. It is difficult to declare this one substance over another simply based on one s senses of sight or smell. Initially the fungus appears as off white felt like or cotton wool like sheets on brickwork and timber and in later stages can develop fungal strands as thick as your finger.

White stains on wood shingle roofs the white stains shown on this wood shingle roof are in fact not a stain but an absence of lichens or moss. White or less black roof surfaces may also be found below copper or aluminum flashing whose salts run down the roof surface in wet weather preventing algae or moss growth and leaving a white area on an otherwise stained roof surface. Mould white blue or black spots on timber lining felt masonry. The mold usually appears first as small dust like white spots.