Secret Garage/Tunnel Update #6 FLOODED!!

So in the freak storms of November water had got in more places than first imagined. Its starting to feel like a room now rather than a steel box, hopefully wont be to long till we start to dig a bit more out. SO SORRY this was late but we got there in the end. Subscribe if you haven't as nearly a Million Secret Garage fans.

"A mop is conceding I've had a flood. Whereas this is merely... a spillage." Love the attitude there.

Colin. You really need to add a sump hole to the underground garage design with corrugated pipe around the remainder of the walls to allow any water a path to a location when it can be managed. Collecting any water that comes in at a level lower than the steal base will allow you to add an automated ejector pump to keep the space dry.

4:22 As a former elechicken- Yes. That is the ultimate earth/ground for electrical lol Though I would still run a proper ground rod, even deeper, just to ensure the metal box you're in doesn't end up holding/running a charge and biting you.

If you ever sell your house, please just plasterboard over the hidden rooms/basements/tunnels and let some future owner discover your hidden labyrinth.

*takes notes*

Dear Colin. May I tell you what I have learned about cellars and tunnels? 1) Never put anything directly on the floor! Raise it al least 1ft or put it into a sealed plastic container. 2) Do it like a submarine and separate the rooms and add a water barrier between them so water cannot creep from one room to the other. 3) You even might seal each iron bar rectangle on the floor and protect its filling from rot. 4) Why not add some sensors for each room? Detecting temperature, humidity and water would be nice. This will notify you so you can react when things get bad. 5) Maybe you even add pumps that can counter a water breach as a fun project (and connect them with the sensors). It surely is over-engineered but when you even have pressure tubes that should be easy. 6) Paint everything. Use paint even as a sealer. Keep it up! I'm digging it. :D

"To all the electricians, look"😆 (Sweeping up)😂😂

Two things I would recommend to do at this point. One, set a pair of leak detector discs under the floor for future problem detection. Secondly, I would add a sump pump just inside the doorway. to the garage area. You should close or caulk the doorway into the tunnel into the garage. the pump will then catch any future influx of water. I hope you used marine-grade lumber for that floor. It will take water dripping in.

You should definitely treat the wet areas with some disinfectant to kill any possibilities of mold growth once you get mold spores growing in a confined space like that it will be a nightmare in the future when humidity rises. Also running an ozone machine will kill any mold spores. And You should invest in a battery-operated Shop-Vac it makes little water messes like that go very easy. Great work on the videos.

Colin, for your future peace of mind look into installing some moisture alarms in the floors. That way you can catch it early and potentially prevent any damage and understand immediately where it’s coming from. I live in FL and use the small battery powered ones so I know if my garage is flooding. It’s nice to not have to guess or worry and have an immediate alert whenever something happens instead of finding out when your tools are ruined or your stuff is all moldy/rusty…

hey colin, hope you now have planned for a proper bulkhead door, how's your fire suppression happening? choke it out? there is quite a lot of wood, carpet, insulation that would give plenty of nasty consequences + if spred... a pump well with an oil separation system. just considering you plan to keep cars and inventions down there... love the project

The amount of knowledgeable people in your comments section regardless of the problem your facing is mind blowing. So many incredibly smart and capable people all gathered to watch you and even lend some insight when they see a chance. So cool.

even after years of watching you dig holes and weld steel, this is still by far my favorite upload of any week! never stop being you colin!

i love the fact you are one of our own colin,by that i mean an eccentric brit. i mean that in the nicest possible sense too,can i assume this will be your forever home after the insane amount of work you have put in to this project,even so i would imagine it would add a lot to your house value...big fan,love the channel. keep up the cool content

I recommend you source a wet and dry vacuum cleaner, to save on the paper tovels. You also might consider a Munthers adsorption de-humidifier which is simply the best for your type of application i.e your bunker

Colin, Cheap insurance would be to put a ground water sump pit in the corner somewhere out of the way. A automatic float switch turns it on if there's water intrusion in the tunnel. You might never need it, but if you did it would be there. Love the tunnel series, keep up the great videos! Wayne in USA

Furzey! That water under the floor, get some of them smart home water sensors and put them at different points along the sub floor, then watch when they get triggered - it’ll tell you where the water is coming from and when the water is building up without you taking ye olde floor up! 💃

As a point on the risk of flooding in the tunnel Colin - I'd suggest where the car lift is going to be, or possibly by the entrance to the tunnel - add a 0.25x 0.25m x sump pit Maybe a small gutter trench across the tunnel entrance with a mesh border, falling off to the sump pit? You can then fit something like a Karcher submerible pump that has a built in float switch, and have it plumbed out to the drains It would give a perminant and easy to check solution

Colin, you should make the floor in compartiments. Just weld some strip between the box section and the wall. And seal everything with silicone. If you have leakage it cant creep. And you keep the water within one section.