Caulking Cedar Siding Seams

When james hardie siding products butt into wood based materials a 1 8 gap will allow for expansion and contraction of the wood based product.

Caulking cedar siding seams.

Z flashing z flashing z flashing min. Nichiha panels bring the look of wood stone brick metal more to your commercial or residential projects with high performance fiber cement. If i install a non finished product i usually go with a 3m paintable caulk. The siding expands and contracts with temperature and humidity.

Grumpy chicago gutters. Do not caulk extend shingles at least 1 in. I m not a painter but i do install cedar siding and i always caulk all the joints. Siding caulk can be used on several different areas of your exterior siding to help prevent water damage and moisture buildup.

Me i would powerwash the house let dry overnight caulk the seams and around the edges with cedar colored caulk then stain. In my opinion caulking between the seams in any lapped siding either horizontal or vertical is not good practice but not just because of any potential vapor barrier effect. Generally we do not recommend caulking butt joints on cedar siding. Because the staing will tint the caulk slightly.

It needs to move and breathe. Slabs path steps to siding figure 7 deck to wall figure 8 ground to siding figure 9 gutter to siding figure 12 drip edge figure 13 block penetration figure 14 valley shingle extension min. Don t use a filler like wood filler as it will not move with the cedar siding. Some of the most commonly caulked areas of siding include both corners and crevices as well as some butt joints and window and door trim boards.

If i am installing a prefinished product which i do mostly i use a color osi match caulk. Out from the fascia.