Caulking Cemplank Siding

Do not caulk between siding and any built in receiving channels located at or around windows.

Caulking cemplank siding.

Is the old caulking removed before new coats are applied. Always prime or paint any cut edges that are inserted into a window j channel. Cemplank lap siding and cempanel vertical siding can be installed and finished like wood. Similar to paint previous coats of.

Always caulk between the siding and the trim. Cemboard siding provides the look and texture of wood with proven fiber cement performance at an exceptional value. V caulk replacement when sealant is in need of replacing carefully remove existing caulk and replace with a high quality paintable latex caulk. Dents chips cracks and other minor surface damage in james hardie siding and trim products can be filled with cementitious patching compound.

Vertical trim gap caulking. For best results use a latex caulk that complies with astm c 834 astm c920 or better. Instead we snug the joints up tight and. In my experience water that gets trapped against fiber cement siding can be absorbed by the material causing joints to swell and shrink during freeze thaw cycles.

The nails holding up the siding should not be caulked. Leave a 1 8 gap between the siding and the trim or other materials to allow for structural movement. Caulking sealant must be applied in accordance with the caulking sealant manufacturer s written instructions or astm c1193. A diyer or a novice painter might attempt to achieve a cleaner look by caulking the siding nails but the nail is guaranteed to push the caulking material out within a few months.