Caulking Cemplank Siding

Vertical trim gap caulking.

Caulking cemplank siding.

Cemboard siding provides the look and texture of wood with proven fiber cement performance at an exceptional value. Cemboard fiber cement siding products are an attractive and durable alternative to vinyl and wood based siding. On our jobs we typically don t leave gaps for caulk at butt joints because this detail can contribute to the problem. A mark parlee a general contractor in des moines iowa responds.

Similar to paint previous coats of. 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. Dents chips cracks and other minor surface damage in james hardie siding and trim products can be filled with cementitious patching compound. Always caulk between the siding and the trim.

Cemplank lap siding and cempanel vertical siding can be installed and finished like wood. Instead we snug the joints up tight and. 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.

The nails holding up the siding should not be caulked. Always prime or paint any cut edges that are inserted into a window j channel. Is the old caulking removed before new coats are applied. Do not caulk between siding and any built in receiving channels located at or around windows.