Flashing Between Chimney And Siding

6 install building paper.

Flashing between chimney and siding. 05 01 2011 05 17 am 5. Metal flashing or any metal to wood joint should not be caulked another water exit pathway that should never be sealed. Second step flashing needs to extend 8 to 14 inches above the shingles according to the national roofing contractors association nrca. Otherwise dripping water will leave its mark along the siding.

Also avoid caulking tongue and groove siding boards together. First step flashing must be installed before the siding so that the siding can cover the top of the flashing. Improper siding and flashing details can lead to siding failure even with hardie plank. With the flashing in place let s see what happens.

However my question is more about the water proofing of the joint between the chimney and the wall. Where the step flashing terminates along a sidewall is a common trouble spot for moisture problems. Wall flashing where siding meets a chimney clean out the gap use backer cord for large gaps and seal with good quality butyl caulk in clear colour. Attach the flashing to the face of the wall with 6 penny galvanized nails and a hammer.

The water runs down the siding and at the bottom of the first row of vinyl siding it drips off and contacts the metal flashing as it runs across the top of the fascia board. If this is a repair job the siding must also be removed and replaced with the flashing. Flashing vinyl siding next to vertical side of chimney. The best solution is a preformed or custom bent kick out flashing to divert the water away from the siding.

The nails should be inch from the outer edge of the flashing and 16 inches apart. The nails holding up the siding should not be caulked. Siding nails should not be caulked another item that needs room to play is siding boards themselves.