Does Wood Siding Need Flashing

Start by installing a metal or vinyl base flashing first.

Does wood siding need flashing. As part of the t1 11 installation wherever a wall height requires more than a full sheet of siding a z shaped metal flashing is added at all horizontal seams to ensure a proper seal against rain or moisture. Also avoid caulking tongue and groove siding boards together. Click to enlarge any image. While paint does tend to somewhat glue these pieces together caulking them is never advised and can cause permanent damage.

Also see windows doors. And when those corners. Flashing helps prevent any moisture which can collect due to condensation or small gaps in the siding that flows downward from infiltrating behind the house wrap where it can do damage. Therefore the upper piece of wrap or flashing should always overlap any lower pieces.

The gap should be 1 or more inches behind brick or stone veneer 3 4 inch behind stucco and 1 16 inch behind lap siding wrinkled house wrap will provide this 1 16 inch gap how to construct a drainable wall assembly with wood or fiber cement sided walls. When it comes to flashing siding corners many builders simply use a 1x wood corner. Install the kickout flashing underneath the first shingle photo 1. But unlike fiber cement siding wood is almost sure to rot.

It would run along the top until it found a tiny crack and then it might flow behind the fascia. If the shingle already has flashing on it the kickout flashing has to slip beneath it and you ll have to loosen or remove siding to do this. Metal flashing or any metal to wood joint should not be caulked another water exit pathway that should never be sealed. T1 11 exterior wood siding has been in wide use for over 30 years and is distinguished by vertical grooves that simulate a spaced board appearance available in 4 6 8 and 12 inch groove spacing.

Never caulk the joint between the siding and the head casing or the sill leaving these joints open to drain any trapped water. Stop wood sidings at least 1 inch short of the bottom leg at step flashings and other roof flashings. Siding details at roof wall joint step flashings to avoid rot. In certain instances flashing may need to be installed on the exterior of siding.

This could cause a leak indoors or start to rot the wood fascia board the wall sheathing or any other wood indoors. Add felt if needed before nailing the new wood on and prime the new wood on all four sides before installing it. Without the flashing in place water would roll down the vinyl siding and contact the top of the fascia board. Siding nails should not be caulked.