Wood Lap Siding Spacing And Joints

Framing or one bay for 24 inch o c.

Wood lap siding spacing and joints.

Sbc 16 in. Primed wood nickel gap ship lap siding and wall panel 6 pieces per box model bpafpss0106b 90 00 90 00. Gap at butt joints and ends. Lp requires a minimum 3 16 spacing at all 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. For example you install fiber cement lap siding in much the same way as wood siding but most manufacturers advise you to leave 1 8 inch gaps at the ends of the boards to allow for expansion and then caulk the gaps. Kimberly bay 3 4 in. Some laminate installers recommend leaving a gap of no less than 12 inches between the end joints of adjacent rows whereas hardwood installers say it should be three times the board width.

Lp smartside 76 series lap siding may be attached directly to framing members spaced a maximum of 24 inches 610 mm o c. A common problem with cement board siding products and some other types of horizontal lap siding is that older installation guidelines called for caulking the joint instead of flashing the joint. For walls longer than 12 feet you ll need to butt additional lengths of siding together. Butt joints should be staggered over successive courses.

It s best to stagger the joints in each successive course to avoid noticeable patterns. Butt joints in adjacent courses should be spaced apart by at least two stud bays for 16 inch o c. The irc requires that horizontal lap sidings have a minimum one inch lap joint or 1 2 inch if the siding is rabbeted. Apply siding in a method that will prevent moisture entry into the siding or wall cavity.

Lap siding also called horizontal siding or clapboard may be made of wood fiber cement plywood hardboard or similar materials. Use only approved methods to protect joints areas. Weather proofing butt joints in building siding in most climates it is a good idea to slip a small spline of asphalt felt paper behind each butt joint in horizontal sidings. It depends on the option you choose but if joint caulking option is selected seal all gaps at butt joints with a high quality exterior sealant meeting the astm c920 minimum class 25 sealant.

Set your store to see local availability see similar items. Install a minimum 3 16 in. Do i have to caulk at butt joints. How much space do you need between lap siding pieces.

Siding must not be in direct contact with stucco mortar stone brick concrete or masonry. Check your local building codes before starting to install siding to confirm if wood structural panel wall sheathing is required.