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Is it okay to cut through ceiling joists?

anotheruser · 2019-07-19 15:08:45

They aren't the main house ones but they seem to hold up the ceiling plasterboard. I want to run a plastic water pipe through three of them.

Comments

markin Posts: 3,864 Forumite

20 July 2019 at 9:42PM edited 20 July 2019 at 10:00PM

If it was 2x6 it could span 10ft, From memory 2x4 can only span 6ft, any more and it will bend/deflect to much and crack the plasterboard.

If its resting on an internal wall, then that to the outside wall would be the span, im guessing its way more than 5 ft. You really need to measure the wood and get a real idea of the actual span.

They do also likely serve as part of the roof to stop the roof spreading and pushing out the walls.

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