Flashing Between Chimney And Siding

Otherwise dripping water will leave its mark along the siding.

Flashing between chimney and siding.

With the flashing in place let s see what happens. Flashing vinyl siding next to vertical side of chimney. The nails should be inch from the outer edge of the flashing and 16 inches apart. Where the step flashing terminates along a sidewall is a common trouble spot for moisture problems.

However my question is more about the water proofing of the joint between the chimney and the wall. 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. Siding nails should not be caulked another item that needs room to play is siding boards themselves. 08 09 2015 12 51 pm 7.

If this is a repair job the siding must also be removed and replaced with the flashing. Attach the flashing to the face of the wall with 6 penny galvanized nails and a hammer. Second step flashing needs to extend 8 to 14 inches above the shingles according to the national roofing contractors association nrca. The best solution is a preformed or custom bent kick out flashing to divert the water away from the siding.

Metal flashing or any metal to wood joint should not be caulked another water exit pathway that should never be sealed. Also avoid caulking tongue and groove siding boards together. The nails holding up the siding should not be caulked. First step flashing must be installed before the siding so that the siding can cover the top of the flashing.

6 install building paper. The water then runs off the flashing because it can t go up the flashing as it extends up behind the siding. 05 01 2011 05 17 am 5.