I recently purchased a house and have noticed the floors seem to sag in certain spots. I notice in the basement that there are several sections where the joists were cut and then extended via tecos to the sill plate. Presumably because the sill plate needed to be replaced. I attached a photo of a small section showing what I'm describing. The majority of my basement is finished and can I can peek into a little space to allow the plumbing to run and there looks like there is a long stretch of this seemingly hack. Note, there was a significant house fire hence why the joists were painted/sealed.

1) is this a legit way to repair joists/sill plates?

2) is this safe?

enter image description here

  • I find the plumbing line held up by strapping to be the odd thing in this picture.
    – Jim
    Nov 30, 2017 at 15:37

1 Answer 1


There's no way we can say. The doubled joists may be sufficiently stout to carry the cross-beam. Or they may not. It's a question for an on-site engineer. Strategically there are no concerns, and there's nothing "hack" about it. It's no different than a break in the joists at any other beam. Almost every home in the U.S. has such a scenario.

By the way, those are called "joist hangers". Teco is a brand that manufacturers many products. I've never actually heard them called that, but I've heard the heavy-gauge 1-1/2" nails referred to as "teco nails".

  • Yes "Teco" is not a thing -- it is a brand (an adjective) used on things, such as connectors, hangers and fasteners made by Timber Engineering Company, and later by others, including United Steel Products, under that brand.
    – Upnorth
    Nov 30, 2017 at 15:09
  • Simpson also makes things like that. Nov 30, 2017 at 22:18
  • Thanks. I'm not a carpenter but I've heard several carpenters refer to "joist hangers" as tecos. Probably a regional thing (NY - LI). Again , I'm not a carpenter but I would think the right/better way would be to insert a new joist.
    – Paul
    Dec 2, 2017 at 3:57
  • That's easier said than done. It's very difficult to get a large piece of lumber into a tight space from both ends at the same time.
    – isherwood
    Dec 2, 2017 at 18:39

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