Structural damage is inevitable if there is a serious and long standing roof leak.
Slate roof and wood beams leaking brown liquid.
Don t automatically assume it s the slate roof that s at fault.
You also need to check the sheathing under the slates when you re fixing leaks.
It could be the flashing so you will need to check that as well.
The damage from the expansion allows the wood sap to bleed or sweat out from deep within the beam.
5 common reasons for a roof leak.
Use a putty knife to spread the tar into the leaking hole on the inside of your roof.
Before you leave your attic use a measuring tape to roughly map out where the leak is so you can find it once the rain stops.
In an attempt to decrease that pressure the molecules begin to move outwardly that results in an expansion or wound in the wood.
Spongy and weak water damaged wood can end in peeling paint damaged ceilings and buckled wall coverings.
The nail will provide a path for the water.
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You can also face expensive wood framing repairs if water leaks down into ceiling joists and walls.
The flashing and the guttering are actually the weakest points of a slate roof so look at them first.
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Insert a nail in the hole where water is leaking through the roof.