Caulking Cedar Shake Siding

If you re thinking of installing shingle siding it s important to note that this option can be used only if the sheathing is boards plywood or osb.

Caulking cedar shake siding.

If i install a non finished product i usually go with a 3m paintable caulk. The best caulk for cedar siding has unique properties that keep it looking great and structurally intact for a long time. It performs excellently for shutting out the moisture during heavy rains and bars pests and mold from gaining a stronghold. Caulk by its adhesive nature will try to limit this movement leading to widespread failure and cracking in the caulk over time.

If i am installing a prefinished product which i do mostly i use a color osi match caulk. Also it is versatile so that you can use it for windows sinks and other areas in and around the. While cedar stands up to the elements fairly well on its own putting a seal or a coat of paint on it can enhance the color and protect the wood from inclement weather. Think of a wood home as a living thing.

Corner boards are applied to the sheathing with siding fitting tightly against the narrow edge of the boards allowing for expansion and an adequate caulking bead. The siding expands and contracts with temperature and humidity. The answer depends on the manufacturer and installation method used when the siding was first installed. Natural siding boards are designed to expand and contract with the elements and we do not want any adhesive to prevent their natural movement.

The wood s structural integrity will remain unless the wood is exposed to excessive moisture which can cause curling cracking and wood rot. It needs to move and breathe. Generally we do not recommend caulking butt joints on cedar siding. For curb appeal that will make your house stand out in the neighborhood consider installing shingle siding.

Recommendations for caulks are located on page 10. Other technical resources can be found elsewhere on their website. Below is a link to their installation guide. Width is a matter of taste and proper proportion.

The western red cedar lumber association publishes a number of downloadable booklets concerning the design installation and finishing of cedar siding. Although cedar shingles take more time to install than most other types of siding they lend a rich textured look to your exterior. Butyl rubber is sometimes recommended for exterior siding since it s a specialty outdoor caulk that can withstand changes in temperature and repeated exposure to the elements but you can choose any exterior caulk that will bond to your siding just make sure to read the labels and spot check on an unseen portion of your siding to make sure. I m not a painter but i do install cedar siding and i always caulk all the joints.