1. the construction technique of reinforcing a structural member by attaching a new piece of lumber alongside it
Usage: construction; carpentry

1. present participle of sister: to reinforce a structural member by attaching new lumber alongside it
Usage: construction; carpentry

Examples

• The contractor recommended sistering the damaged floor joists.
• Sistering is a common method for strengthening old wooden beams.
• They were sistering the rafters to meet current building codes.
• The sistering process involves bolting new lumber to existing framing.
• After sistering the weakened studs, the wall was structurally sound.
• The carpenter explained the sistering technique to the homeowner.