Caulking Cemplank Siding

V caulk replacement when sealant is in need of replacing carefully remove existing caulk and replace with a high quality paintable latex caulk.

Caulking cemplank siding.

Always caulk between the siding and the trim. However this detail may not be effective at sealing the ends allowing water to be absorbed and swell the board ends. Where two pieces of siding meet. 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.

Caulk and seal all cracks in the siding as well as any open seams joints or gaps with a quality acrylic or siliconized acrylic caulk. Cemplank lap siding can be installed over braced wood or steel studs spaced a maximum of 24 in. See general fastening requirements. Caulk is usually used with fiber cement siding to prevent water intrusion at the butt joints.

Caulking around windows doors eaves and trim edges gives added insurance that leaks will not occur. What must be caulked caulking corners. Leave a 1 8 gap between the siding and the trim or other materials to allow for structural movement. 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.

Always prime or paint any cut edges that are inserted into a window j channel. Trim boards wood windows. 2 house built before 2008 so has no flashing okay to caulk. Cemplank lap siding and cempanel vertical siding can be installed and finished like wood.

Cemboard fiber cement siding products are an attractive and durable alternative to vinyl and wood based siding. A mark parlee a general contractor in des moines iowa responds in my experience water that gets trapped against fiber cement sidingcan be absorbed by the material causing joints to swell and shrink during freeze thaw cycles. This is a must do for all houses. Cemboard siding provides the look and texture of wood with proven fiber cement performance at an exceptional value.

Should they always be caulked. Moisture likes to hide in corners edges and under ledges. Do not caulk between siding and any built in receiving channels located at or around windows. Irregularities in framing and sheathing can mirror through the finished application.

Butt joints but not all butt joints. For best results use a latex caulk that complies with astm c 834 astm c920 or better. Or directly to minimum 7 16 in. 1 i chose this caulk because it has 25 flexibility compared to silicone based caulk.