Drain blockages caused by accumulated fats and debris can be cleared using interceptor cleaning and high-pressure jetting techniques, with proper pipe sizing and smooth pipe surfaces essential for maintaining effective drainage flow.
Deep Dive
Prerequisite Knowledge
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Where to go next
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Deep Dive
Challenging drain clearance
Added:Put your time.
What they practice?
It's been here for a while.
I can't see.
Put this on cowboy builder connected to the wrong pipe or something. I don't know.
Okay, so it's June the 18th, 2026. Blockage located in Crobar, England.
See what the issue here is.
Excessive fat.
So, I'm going to try and clear this interceptor, and then we'll jet up. The actual issue's at the back. There's a larger one of them. That's a 2-in. This should be a 4-in.
Put my little assistant Madison today, Jay Bows. We're not actually going to be working on the tools today.
I'm going to be doing paperwork in a moment when she's coming.
Let's go do another one. Let's have a look. See.
4-in in there.
Oh, look. There's a bit of See that?
Put like a bit of brick in there.
Pass me the plank.
Is everyone doing that?
Yes, it's like like the back of your pan, that bit.
trap >> [snorts] >> And the pressure normally, if you're lucky, pushes the stuff inside.
Well, see that now looks like it's clear.
Problem with that is Now, what happens is on the drain going to the rear, where this has been blocked for so long, fat forms.
Yeah.
So, we'll have to blast it.
Okay.
All right.
All right, blast in the downpipe.
Huh? Blast in the downpipe.
Don't twist it.
What?
I've got to turn it down.
Yeah.
>> Put it across.
Can you just type the interceptor?
Yeah.
That's all that's it.
Come on, push it right in.
All right, give him the blank.
Well done.
The toilet inspector.
Hello, it's the toilet inspector.
Yep.
Lovely jubbly.
Pass the gas.
Well, I think it's is that on them?
Depends on the camera there.
Stop.
Oops.
You can't get in there anyway.
Stop. Stop.
Oops.
Stop.
What's going on?
Stop.
What happened here?
What's wrong with me?
Oops.
What's going on?
Okay. I don't think we cleared blockage at the back, but at least we know the drain is now okay. There's a back in the middle of the van.
Could you kindly get it, please?
Oh, well.
Manholes collapsing around the edge there.
>> [snorts] >> No one in my system J by would do this.
>> Do you want me to do it?
I don't know. My arms are reached.
>> I don't want to be that cruel to you.
>> How far does it go?
>> Don't be cruel.
>> Yeah, go on.
>> Do you want to stand Oh, well, you'll be all right there.
So, you >> Can I just >> Oh, no, not with those It's going to be wet. I'll just take it.
Put your tongue.
I do it on purpose.
What's happened here? A bit of the pinching on the manholes dropping.
I think if If it goes down there, it's The channel don't feel good, either.
Channel's gone.
>> Can I change it?
>> It's just like doing math pies when you were a kid.
There we go.
All right.
>> [snorts] >> I'm just going to hit that way.
There we go.
A bit of bit of fat on the back of that interceptor.
>> How much?
>> I probably need to jet that.
I'm passing the four.
Please.
>> Does the screen not show what we're doing?
>> Say?
>> The screen's not showing anything.
>> That's fine.
Yeah, this interceptor is a tighter than normal.
Normally these easily fit in.
Okay, so what we do for safety is to put the manhole halfway across the manhole.
>> Yeah.
>> Just across there, please.
I'll leave tripod cam there.
That'll do.
Okay, if you can grab the leader hose and the blank.
Please.
All right, we'll be back when we go around the back to the blocked drain and see what we can do from there.
Okay, so we come around the back. It's been here for a while.
Won't say.
What you got is a rainwater system, foul system.
On a shared combi pipe. It's on a shared manhole, separate lines, but stupid thing is in the main road they join.
And uh it's going to be fun, isn't it?
>> [snorts] >> In shingle. Don't know how we can clear that out.
But, we'll give it a go.
All right, so can you do the on and off instead of just holding down the on, wouldn't it?
>> Yeah.
>> Which one was it?
>> Do not worry about it.
What I've got to do is break this down there with water.
I can't really work out that hose pipe situation.
So, what we do is when that interceptor's now clear, the hose will help make it proper.
I'm hoping that two blocks here.
The first time we did the kitchen, I don't know if that was causing this.
When I fixed that line, nothing came out.
I'm hoping we break this down and the blockage is fixed here.
And if we divert the galley, so there's no access to the bathroom to go through the house.
Okay.
Okay.
This is a problem.
That's the foul line.
This is the surface one, Charles. It's higher. It's backed up and coming. All that's connected to the wrong thing.
It's fun.
>> Oh dear, this isn't going to be good.
I'm going to have to do something I really don't want to do.
Funny thing is we've just been for a swim, had a shower.
Um okay.
Look at that down there.
>> I can't stand that stuff.
>> I know you can't.
>> I would not put anyone through what I'm about to do.
>> What is some cowboy builder connected to the wrong pipe or something? I don't know.
Let's get this sewage out.
Anyway.
We can have a look.
See what we can do.
All right, what we've done is we've released the solid around here.
Inlets that's coming in but can't get away so from the galley. So the water's now draining to the galley.
It can't get away.
I've got to do a clean job there.
>> Uh I'm hoping that perforated is coming in above the outlet.
Disturb this enough to go.
I'm good.
I'm good. Oh, [ __ ] it.
Okay.
What's that looking like?
You're right.
Looking forward to getting my hip replaced.
Be able to bend down and do this job a lot easier.
All right.
It's like getting an old dis done.
Look at everything in here.
Okay.
So.
>> So.
>> We're not going to go for lunch, but some of the salad is still salad.
We're having dinner.
>> Huh?
>> We also know it's dinner time.
>> Dinner?
Dinner.
Make sure you say Mr. D.
>> No.
I think he's tired, isn't he?
I mean, if I bust him too hard, he'll kill me.
What do you reckon it's worth?
The bars put the money in.
>> Mhm.
>> Do you think he'll do them, or do you think he'll just fly off the Just think if we had that down from Cotswold Farm we might have had to bend it cuz they were mating or they were having babies and we might have had to wait two weeks for it to be over.
Let's see who's more interested in birds than us. Ducks like that.
So, save the birds but not the ducks, yeah?
So, all right.
You might as well about that one.
Happy with that?
Thanks from there. See that? Sewage is going to catch on that.
>> On what?
>> See that there?
>> Yeah.
>> Sewage will catch on that.
So that needs to be bent in and it needs to be man holes needs to be smooth.
That sound? Can you hear it? That's it dropping into the interceptor.
Have the one on the other side.
One at a time.
As I say, these are supposed to be one fell one man effort.
Doing some time in development.
Some drone.
A wine builder and check what he's doing.
New roads, new discs. Keeps coming undone.
The up drainage tube is pretty [ __ ] isn't it?
>> Yeah, I think we'll have to go home and have a shower before we go to lunch, don't >> Mate.
Something's not right there.
There we go.
Like loads of sugar packs or something in there.
Fascinating.
Got some movie on there. it?
>> All right, give me that.
So, let's just Nothing I can do with this. Look at the stones. Needs to dry out.
Great day for stones.
I don't want to slip.
>> It's a beautiful lot.
>> What?
>> [ __ ] I got to say how interesting must be something going on in the lot while I >> I'm just playing by the flies.
That's what I was going to tell her the flies are on.
By the time one of those flies in that moment the color's gone black.
>> Yeah.
>> So, yeah, it's been like that for a little while.
And also this place that you wouldn't notice sitting here, would you?
>> No, I understand.
>> What?
>> Just looking out the window.
>> No, I was just looking around, wasn't I?
Okay, so I could tell the lady the good news and the bad [laughter] news at the same time.
>> Oh, sorry. I was going to say that.
>> All right, what we'll do is to check Man, all none of it's backed up there.
No. We're good?
>> Yeah.
>> Okay, sweet.
We uh Stop that. We'll stop that.
We're going to try to put
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