Caulking Cedar Shake Siding

The best caulk for cedar siding has unique properties that keep it looking great and structurally intact for a long time.

Caulking cedar shake siding.

It performs excellently for shutting out the moisture during heavy rains and bars pests and mold from gaining a stronghold. Below is a link to their installation guide. Caulk by its adhesive nature will try to limit this movement leading to widespread failure and cracking in the caulk over time. 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.

For curb appeal that will make your house stand out in the neighborhood consider installing shingle siding. The wood s structural integrity will remain unless the wood is exposed to excessive moisture which can cause curling cracking and wood rot. The answer depends on the manufacturer and installation method used when the siding was first installed. When you try to restrict either it is at your peril.

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. Although cedar shingles take more time to install than most other types of siding they lend a rich textured look to your exterior. 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. It needs to move and breathe.

Width is a matter of taste and proper proportion. 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 western red cedar lumber association publishes a number of downloadable booklets concerning the design installation and finishing of cedar siding. I m not a painter but i do install cedar siding and i always caulk all the joints.

Recommendations for caulks are located on page 10. The siding expands and contracts with temperature and humidity. The corner boards and the ends of the siding are nailed to the corner studs which anchors the wood for a maintenance free joint. If i install a non finished product i usually go with a 3m paintable caulk.

If i am installing a prefinished product which i do mostly i use a color osi match caulk. Other technical resources can be found elsewhere on their website. Think of a wood home as a living thing. Generally we do not recommend caulking butt joints on cedar siding.