Cement Board Siding Joints

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.

Cement board siding joints.

The joint covers protect the butt joint where two siding planks meet and provide an expansion joint to help prevent siding buckling. Butt end joints should be installed with factory sealed or factory prefinished ends butted together in moderate contact. Fiberglass cement siding is a composite made of portland cement silica and wood fiber. Do not caulk fiber cement siding butt joints edges.

It is never acceptable to leave a gap of any size at a butt end joint. Caulk is usually used with fiber cement siding to prevent water intrusion at the butt joints. This has proven problematic over time as caulking the joint results in unsightly surface appearances due to the different textures as well as resulted in failure of the caulk joint and associated ongoing maintenance. A wraparound lower lip hooks the siding and requires one nail to hold it in place.

Fiber cement siding accessories. For pricing and availability. We ve been providing a better way to build for over 100 years. However this detail may not be effective at sealing the ends allowing water to be absorbed and swell the board ends.

Founded in the mid 1950s this diversified japanese company has been quietly producing fiber cement siding products for years mainly for commercial properties. It s available in many styles and widths both smooth and wood textured and you still get the crisp joints and details that ll make your home s exterior stand out. Your nearest restaurant bank theater or grocery store just might be sided with nichiha fiber cement board. Weatherside fiber cement siding is the one and weatherside fiber cement siding is the one and only solution for replacing or repairing old asbestos siding shingles.

Once painted it looks almost identical to wood. It is available in a variety of sizes and shapes to match many of the old siding shingles installed over the last 60 years. Joint covers are intended for use with hardboard and cement siding. How to flash siding butt joints after the siding is installed.

For pricing and availability. If you have never heard of nichiha fiber cement siding you are not alone.