How Much Of A Gap Do You Need In Siding

Correct methods and techniques.

How much of a gap do you need in siding.

Cedar shake style products have a shiplap edge at their ends that automatically aligns adjacent pieces with the proper gap but it s still necessary to leave a 3 16 inch gap between the siding and trim pieces. Lp requires a minimum 3 16 spacing at all butt joints. On most new homes the trim goes up after the siding is installed which creates a large gap that should not be caulked. When installing in freezing weather below 40.

Generally an acceptable gap between deck boards is between 1 8 inch and 1 4 inch. Allow a 1 4 in. Many jurisdictions following the international building code which requires a minimum 1 8 inch spacing between boards. Both sizes have their pros and cons.

Siding must be cut in lengths to provide for expansion. Do i have to caulk at butt joints. Always caulk between the siding and the trim. Gap for expansion wherever siding butts accessories.

Caulking siding trim windows doors etc. Vertical trim gap caulking. Leave a 1 8 gap between the siding and the trim or other materials to allow for structural movement. Do not caulk between siding and any built in receiving channels located at or around windows.

Install lap siding without shiplap edges to incorporate a 3 16 inch gap at the butt joints between adjacent pieces of siding. The eighth inch spacing provides for a safer surface for walking. How much space do you need between lap siding pieces.