Project: building a DIY floor hatch

As I mentioned in a previous post we've had questions marks over the ground moisture in the back corner room so to be able to keep an eye on what's happening at ground level I recently installed a floor hatch to help us monitor the ground underneath, here's how I did it.

I had a rough idea in my head of how it might work but a quick Google later I found this post on how to build a floor hatch. The hatch in that post led to a basement (I think) but the idea was the same: an insulated, removable piece of subfloor & floorboards!

I was fortunate my dad helped sketch out the idea for me (I did too but I’ve lost the paper & his version was much better), always helps clear out ideas!

Building a floor hatch
My dads sketch of the floor hatch idea!

Basically I would make a liftable box which contained the underfloor including the windpaper & insulation then I cut the floorboards accordingly to fit the box & just screw them down to make them easy to get up, simple! And unlike most things in this house this actually was simple & went to plan!

Step 1: Take out the existing underfloor boards & screw them together.

Floor hatch
Step 2: Next I built boxing around the 2 underfloor boards

Building a floor hatch
Step 3: I checked the box actually would fit in the hole

Building a floor hatch
Step 4: I added windpaper to the floor hatch box & then taped around the overlaps

Building a floor hatch
Step 5: Added insulation to the box, put it in place & then attached some wire handles to be able to pull it out with

Building a floor hatch
Step 6: Cut & place the floor boards over the box, done, a floor hatch!!

So that’s it, a pretty simple floor hatch and here’s how it looked once the floor was back down:

Building a floor hatch
The final floor (ish) with the floor hatch

We’re going to post lots shorter posts like this about the smaller project in the house so sign up to our newsletter to get notified when we add new content like this!

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