0:00:02 > 0:00:04- I'm Mark.- And I'm Lauren. - And this is The Dengineers.
0:00:04 > 0:00:08The show that puts you in charge of building your very own dream den.
0:00:10 > 0:00:11Dens for adventure.
0:00:11 > 0:00:12Hello, trap door.
0:00:12 > 0:00:15Hanging out with your friends and family.
0:00:15 > 0:00:16This den is the best thing ever.
0:00:16 > 0:00:19And dens built to fulfil your dreams.
0:00:19 > 0:00:21- It's more than he could ever want. - Oh, mum!- Aw!
0:00:22 > 0:00:24Whatever your ideas,
0:00:24 > 0:00:28the Dengineers team are here to transform your inspiration
0:00:28 > 0:00:31- into amazing spaces. - Built especially for you.
0:00:31 > 0:00:33- ALL:- This den is done!
0:00:37 > 0:00:39Hello! KIDS SCREAM HELLO
0:00:39 > 0:00:41Yes, you, Lola...
0:00:47 > 0:00:48Let's do it.
0:00:53 > 0:00:55That is epic.
0:00:55 > 0:00:57- Really happy.- It's amazing.
0:01:03 > 0:01:06Today is an extra special episode of The Dengineers.
0:01:06 > 0:01:08It's our best bits.
0:01:08 > 0:01:10As well as looking back at some of our favourite bits,
0:01:10 > 0:01:13we'll be flying high with some never-seen-before exclusives.
0:01:13 > 0:01:17And taking a look at when things didn't always go to plan.
0:01:17 > 0:01:18SHE SCREAMS
0:01:18 > 0:01:20Right!
0:01:20 > 0:01:24We've seen it all on this series of The Dengineers.
0:01:24 > 0:01:25- Hello!- Hello!
0:01:26 > 0:01:29Mega-surprised faces, check.
0:01:30 > 0:01:32Mind-blowing engineering, check.
0:01:32 > 0:01:33Ta-da!
0:01:33 > 0:01:35Magical!
0:01:35 > 0:01:37That's why an arch is so much stronger.
0:01:39 > 0:01:41Mega-famous celebrities, check.
0:01:41 > 0:01:44- I'm going to come to the ginger den when it's ready.- Yeah.
0:01:44 > 0:01:48And most importantly, we've built loads of amazing dens.
0:01:48 > 0:01:49- BOTH:- Check!
0:01:51 > 0:01:54Oh, my gosh, it's amazing.
0:01:54 > 0:01:57- Do we like it? ALL:- Yeah!
0:02:01 > 0:02:04We had thousands of applications for this series.
0:02:04 > 0:02:07That is a lot of wannabe Dengineers.
0:02:07 > 0:02:10And surprising our lucky ten to tell them they were going to be
0:02:10 > 0:02:12getting their dream den was a tricky job.
0:02:12 > 0:02:14I tell you what, you lot are clever, you know.
0:02:14 > 0:02:17Yeah, there were a few times when we almost got caught, but, luckily,
0:02:17 > 0:02:19we were able to keep the secret and deliver the good news
0:02:19 > 0:02:21- to our Dengineers. - That's what we do.
0:02:23 > 0:02:25Before a Dengineers hit can go down,
0:02:25 > 0:02:27we need to set up our super-sneaky hidden cameras.
0:02:29 > 0:02:33But sometimes, they're not quite hidden enough for our eagle-eyed
0:02:33 > 0:02:36Dengineers, like when we went to surprise
0:02:36 > 0:02:39superstar DJ Joshua at his home in Cardiff.
0:02:40 > 0:02:43Oh, Daddy's friend came round this morning,
0:02:43 > 0:02:47he's thinking of doing some security system.
0:02:47 > 0:02:49- Who's in?- I don't know.
0:02:49 > 0:02:50- LAUREN:- Good save, Mum.
0:02:52 > 0:02:54And that's not the only close shave we've had on this series of
0:02:54 > 0:02:56The Dengineers.
0:02:56 > 0:02:57(That was close.)
0:02:57 > 0:02:59It's fine, it's fine.
0:02:59 > 0:03:01After all the sneaking around is done,
0:03:01 > 0:03:04it's surprise time, and we have had some belters this year.
0:03:05 > 0:03:08- Hello!- Hello!
0:03:08 > 0:03:10How are you doing?
0:03:10 > 0:03:12If this series has taught us anything,
0:03:12 > 0:03:15it's that surprised faces come in a range of styles.
0:03:15 > 0:03:16Surprise!
0:03:17 > 0:03:19Eleanor, how are you?
0:03:19 > 0:03:23There's the "smiley surprise" face.
0:03:23 > 0:03:25The "is this actually happening?" face.
0:03:25 > 0:03:27No, this isn't true.
0:03:27 > 0:03:28And don't forget the
0:03:28 > 0:03:31"I can't believe Mark and Lauren just popped out of a recycling bin"
0:03:31 > 0:03:32face.
0:03:32 > 0:03:33- BOTH:- Hello!
0:03:34 > 0:03:38But the title of most shocked-face of the series goes to Lola
0:03:38 > 0:03:40when we surprised her at school.
0:03:40 > 0:03:44We're here to tell you - yes, you, Lola -
0:03:44 > 0:03:46that you're going to be building your very own
0:03:46 > 0:03:48dream Hollywood cinema den.
0:03:52 > 0:03:55Oh, I tell you what,
0:03:55 > 0:03:58it's nice to be able to just sit back and relax sometimes, isn't it?
0:03:58 > 0:04:01Do you know what, it is pretty good, isn't it?
0:04:01 > 0:04:03But it's not always like this.
0:04:03 > 0:04:06There has been some serious graft on The Dengineers.
0:04:06 > 0:04:08Yeah, you're right. Hard-working bunch, the old Dengineers.
0:04:08 > 0:04:10- Oh, yeah.- Salt or sweet, Loz?
0:04:10 > 0:04:12Oh, I'll go for salted please, I think.
0:04:12 > 0:04:14Wa-ha-ha!
0:04:14 > 0:04:16SHE LAUGHS WEAKLY
0:04:25 > 0:04:30Our Dengineers team work mega-hard from the second they arrive on-site.
0:04:30 > 0:04:31Dengineers have landed.
0:04:34 > 0:04:39And when the build gets going, no job is too big for the Dengineers.
0:04:42 > 0:04:45We've said "see you later" to a ceiling.
0:04:45 > 0:04:48It's coming. Yes!
0:04:48 > 0:04:49Woo!
0:04:49 > 0:04:50APPLAUSE
0:04:57 > 0:05:02We've carried a roof weighing over 220kg around a house...
0:05:02 > 0:05:05- LAUREN:- Watch this corner here, though - it's really, really tight.
0:05:06 > 0:05:10..through a garden, and up onto the structure of a den.
0:05:17 > 0:05:20But the biggest challenge of the series was in Manchester,
0:05:20 > 0:05:22when the Dengineers had to dig up not one,
0:05:22 > 0:05:26but two sections of a community centre.
0:05:26 > 0:05:29The team started by ripping up the ground in one area of the build
0:05:29 > 0:05:31and digging a massive hole in another.
0:05:34 > 0:05:37And the result of all this hard graft was the creation of an amazing
0:05:37 > 0:05:41running track and an awesome sunken trampoline.
0:05:41 > 0:05:43And the hard work doesn't stop there.
0:05:52 > 0:05:56The Dengineers team only have four days on-site to build each den,
0:05:56 > 0:05:59so we have to work our socks off every single second.
0:06:03 > 0:06:05And there were times this series when we cut it really close
0:06:05 > 0:06:07to the wire.
0:06:07 > 0:06:10I'm a bit worried, but if Dengineers can't do it, nobody can.
0:06:12 > 0:06:13SHE BELLOWS
0:06:13 > 0:06:15I'm going to drop it, I'm going to drop it!
0:06:18 > 0:06:22And the most dramatic finish of the series was in Cardiff,
0:06:22 > 0:06:26where it was a race against time to get Joshua's DJ den done for
0:06:26 > 0:06:27the Big Reveal.
0:06:28 > 0:06:32This was a huge ask and the whole team had to put in a massive shift,
0:06:32 > 0:06:34including me and Loz.
0:06:34 > 0:06:35That's it. Perfect.
0:06:37 > 0:06:39- LAUREN GRUNTS - I'll pull, you pull that.
0:06:39 > 0:06:40SHE LAUGHS
0:06:40 > 0:06:42- Go! - HE GRUNTS
0:06:43 > 0:06:46Joshua's friends and family arrived at the house and,
0:06:46 > 0:06:48despite work still being done on the den,
0:06:48 > 0:06:51the team had no choice but to set for the Big Reveal.
0:06:55 > 0:06:58But Dengineers work hard and never give up
0:06:58 > 0:07:01and we all made one final push for the finish line.
0:07:03 > 0:07:08And after a monumental effort, the DJ den was complete.
0:07:12 > 0:07:15I tell you what, I'm getting a sweat on just watching that hard work.
0:07:15 > 0:07:16We did loads, didn't we?
0:07:16 > 0:07:20Oh, we did. It was a hard run, but it's safe to say, along the way,
0:07:20 > 0:07:23we had a lot of fun. Wahey! SHE YELPS
0:07:26 > 0:07:29Us Dengineers work hard, but we also love to have a laugh.
0:07:34 > 0:07:36There we go, right? Here's for a ten.
0:07:36 > 0:07:37One, two, three, four.
0:07:37 > 0:07:40Oh, it's gone over the fence!
0:07:40 > 0:07:43- It's not rugby! - No, I know, mate. I know.
0:07:43 > 0:07:46What Sege lacks in footballing skills, he more than makes up for
0:07:46 > 0:07:47on the dance floor.
0:07:47 > 0:07:49Right, I'm starting to dress it up now.
0:07:49 > 0:07:50OK.
0:07:50 > 0:07:52# Got to dress it up
0:07:52 > 0:07:53# Dress it up got to dress it up
0:07:53 > 0:07:56# Na-na-na-na Na-na-na-na-na-na-na. #
0:07:56 > 0:07:58CHEERING
0:07:58 > 0:08:02And he's not the only one who caught the Dengineers Come Dancing bug
0:08:02 > 0:08:04this year.
0:08:06 > 0:08:09We've seen some brilliant Bollywood moves.
0:08:11 > 0:08:13- Go on, then.- Ready for this? - Yeah, yeah, go on.
0:08:13 > 0:08:15# Never gonna give you up never gonna let you down... #
0:08:15 > 0:08:18Oh, dad tune!
0:08:18 > 0:08:19Exactly.
0:08:19 > 0:08:22We've seen some less-than-brilliant dad dancing.
0:08:25 > 0:08:27# Da-da-da da-da. #
0:08:27 > 0:08:29This is how all the cool kids dance.
0:08:29 > 0:08:31Oh, I've done it wrong!
0:08:31 > 0:08:35And, as you can see, I'm not afraid to throw some shapes, either.
0:08:35 > 0:08:36SHE LAUGHS
0:08:36 > 0:08:37Ooh!
0:08:40 > 0:08:41Almost did a fall!
0:08:43 > 0:08:45Yeah, I...I've got other talents.
0:08:45 > 0:08:47Dancing isn't one of them.
0:08:49 > 0:08:53Whilst Lozza was showing her limited skills on the dance floor,
0:08:53 > 0:08:57I was showing my prowess with, well, let's just say, a wind instrument.
0:08:57 > 0:09:00A lot's been done, to be fair. We got the old chalkboard done.
0:09:00 > 0:09:02- Well done.- Um, did you hear that?
0:09:02 > 0:09:04I just farted as I said "chalkboard".
0:09:04 > 0:09:05It came out by accident!
0:09:05 > 0:09:07LAUGHTER
0:09:07 > 0:09:09Cor, that's bad. Can you smell that, Jay?
0:09:09 > 0:09:11LAUGHTER
0:09:11 > 0:09:13- That there...- What?
0:09:13 > 0:09:17- Don't start.- .. looks...- Do NOT start - I ain't got time for this.
0:09:17 > 0:09:19- Mark, I honestly... - HE FARTS
0:09:25 > 0:09:27HE FARTS
0:09:27 > 0:09:31- HE FARTS - No!
0:09:31 > 0:09:33No!
0:09:33 > 0:09:36Jen, Mark's doing you-know-what again.
0:09:36 > 0:09:39- HE FARTS - Was that what think it was?
0:09:39 > 0:09:41- That was my foot.- You sure?
0:09:41 > 0:09:43'Sorry, Loz, but it is only natural.'
0:09:43 > 0:09:47'That, Mark Wright, is one thing I certainly will not be missing.'
0:09:47 > 0:09:50Why am I spinning?! Why? No!
0:09:50 > 0:09:52'But I have loved dancing,
0:09:52 > 0:09:55'laughing and having loads of fun with the best den building team
0:09:55 > 0:09:56'in the world.'
0:09:58 > 0:10:00- She's out!- Oh! Careful!
0:10:04 > 0:10:06And as well as doing all of that really cool stuff,
0:10:06 > 0:10:09we met some amazing people along the way.
0:10:09 > 0:10:11Oh! Talking about me again, are you, Mark, eh?
0:10:11 > 0:10:14Yeah(!) No. We're talking about this lot.
0:10:16 > 0:10:20It's been a celeb-fest on this series of The Dengineers.
0:10:20 > 0:10:23We've met superstar names from music, radio,
0:10:23 > 0:10:25TV and only, like,
0:10:25 > 0:10:27one of the biggest authors in the world.
0:10:29 > 0:10:33Yeah, budding writer Eleanor got the surprise of her life when she got to
0:10:33 > 0:10:35meet her hero, Jacqueline Wilson.
0:10:35 > 0:10:37It's lovely to meet you, sweetheart.
0:10:37 > 0:10:40- LAUREN:- You are getting an actual signed copy
0:10:40 > 0:10:42of Jacqueline Wilson's new book.
0:10:42 > 0:10:44- How does that sound?- Sounds amazing.
0:10:44 > 0:10:47I don't think Eleanor will forget that experience in a while.
0:10:49 > 0:10:51And who can forget Joshua's face
0:10:51 > 0:10:53when he found out he was getting
0:10:53 > 0:10:56VIP access to his favourite radio station?
0:10:56 > 0:10:59What if I told you that we're going to take a little tour
0:10:59 > 0:11:02around the Radio 1 studios?
0:11:02 > 0:11:05- Really?- Yes. Would you like that? - Yeah.
0:11:05 > 0:11:07- Shall we go for it?- Yeah. - Come on, let's go.
0:11:08 > 0:11:12On his tour of the Radio 1 studios, Joshua met not one...
0:11:12 > 0:11:14Nice to meet you, Josh. I'm Greg.
0:11:14 > 0:11:15..not two...
0:11:15 > 0:11:17- Hello.- Hello.
0:11:17 > 0:11:19- Hi, Lauren.- Matt Edmondson! - Hi, Josh.
0:11:19 > 0:11:21..but three mega-famous DJs.
0:11:21 > 0:11:23Hi, Joshua.
0:11:23 > 0:11:25- Hiya.- Hi, I'm Annie.
0:11:25 > 0:11:27One of which was his fave DJ, Annie Mac,
0:11:27 > 0:11:30who gave him an extra-special music lesson.
0:11:30 > 0:11:32And then, bring this fader down.
0:11:32 > 0:11:34MUSIC VOLUME DECREASES
0:11:34 > 0:11:35Yes.
0:11:37 > 0:11:38DJ!
0:11:38 > 0:11:41- You did it!- DJ in the place! - Amazing!
0:11:41 > 0:11:43DANCE MUSIC PLAYS
0:11:43 > 0:11:45Yes, Joshua!
0:11:45 > 0:11:46Did you enjoy that, Josh?
0:11:46 > 0:11:48These den day outs were great,
0:11:48 > 0:11:51but my fave famous meet of the series has to be when Carrie got
0:11:51 > 0:11:55VIP tickets to see Jess Glynne perform at Wembley Arena in London.
0:11:55 > 0:11:57# Darling, hold my hand
0:11:59 > 0:12:01# Oh, won't you hold my hand?
0:12:03 > 0:12:06# Cos I don't wanna walk on my own any more
0:12:06 > 0:12:08# Won't you understand?
0:12:10 > 0:12:12# Cos I don't wanna walk alone
0:12:12 > 0:12:15# I'm ready for this There's no denying
0:12:15 > 0:12:19# I'm ready for this You stop me falling
0:12:19 > 0:12:23# I'm ready for this I need you all in... #
0:12:23 > 0:12:25- Can you believe how close we are? - I know!
0:12:25 > 0:12:27# So, darling, hold my hand. #
0:12:31 > 0:12:32Wow!
0:12:32 > 0:12:36And our Carrie didn't just get to see her favourite artist
0:12:36 > 0:12:40perform live, she also got to meet Jess backstage to tell her about
0:12:40 > 0:12:43her amazing gingerbread house den.
0:12:43 > 0:12:45So, Carrie, meet Jess, Jess, meet Carrie.
0:12:45 > 0:12:48- I like the colour of your hair. - Thanks!
0:12:48 > 0:12:50What have you got to say about the colour of your hair?
0:12:50 > 0:12:52What are you doing with The Dengineers?
0:12:52 > 0:12:55- Well, people used to tease me because of my hair colour...- Oh.
0:12:55 > 0:12:57so I wanted to, like, do a den to, like, be proud of it
0:12:57 > 0:12:59and to be positive and stuff.
0:12:59 > 0:13:02- Oh, yeah. Can I come? - Yeah.- Oh, wicked!
0:13:02 > 0:13:05- Would you let Jess into your den? - Yeah.- Oh, that's exciting.
0:13:05 > 0:13:08- I'm going to come to the ginger den when it's ready.- Yeah.
0:13:08 > 0:13:10'Imagine that -
0:13:10 > 0:13:12'Jess Glynne popping round your den for a cup of tea?'
0:13:17 > 0:13:20Tell you what, Mark, you wouldn't catch any of them lot getting things
0:13:20 > 0:13:22- wrong.- I know. Unlike you, Lozza.
0:13:22 > 0:13:25Uh, what? I think you'll find you're the person getting things wrong
0:13:25 > 0:13:26all the time.
0:13:26 > 0:13:29I'll say again - what's my surname?
0:13:29 > 0:13:31Wright.
0:13:31 > 0:13:34Mark Wright, not Wrong.
0:13:35 > 0:13:38It is day one of Whitney's eco-den build and the Dengineers
0:13:38 > 0:13:42have arrived. And when they arrive, they arrive in style.
0:13:42 > 0:13:44I think I'd better go give them a hand.
0:13:44 > 0:13:46Oh, that was not the end of the van!
0:13:48 > 0:13:52On this series of The Dengineers, things haven't always gone to plan.
0:13:52 > 0:13:55I mean, I think it's great that you're such a good loser.
0:13:55 > 0:13:57Oh! Sorry, you've got a line there, haven't you?
0:13:57 > 0:13:59Hello, son!
0:13:59 > 0:14:02- Out-take. Crash. Let's go again. - There he is.
0:14:06 > 0:14:08LAUREN LAUGHS
0:14:08 > 0:14:09I like a good quote.
0:14:09 > 0:14:11- Makes you feel inspired. - What's your favourite quote?
0:14:11 > 0:14:13Um, I like...
0:14:13 > 0:14:15- What about...?- What? - ..YOLO?
0:14:15 > 0:14:17- YOLO's not a quote!- You just confirmed.
0:14:17 > 0:14:19That's what you put in a text message.
0:14:19 > 0:14:21- Of course it's a...- YOLO?!
0:14:21 > 0:14:22Of course it's a quote!
0:14:22 > 0:14:24You only live once.
0:14:24 > 0:14:26Yeah, put that as the quote - "You only live once" -
0:14:26 > 0:14:29- don't put YOLO across the top! - No, YOLO's the short version
0:14:29 > 0:14:30of the quote.
0:14:36 > 0:14:39So it's the day of Whitney... HE SIGHS
0:14:43 > 0:14:44LAUGHTER
0:14:49 > 0:14:52So it's the day of Whitney's big den reveal.
0:14:54 > 0:14:57'And it's not just me and Mark who struggle with our lines.'
0:14:57 > 0:14:59OK, this is the fun bit, this is...
0:14:59 > 0:15:02I'll start again. OK, this is another one of those fun...
0:15:02 > 0:15:04No, no. Sege! Pow!
0:15:04 > 0:15:05All right.
0:15:05 > 0:15:09OK, Rufus, what I've got for you now is a really cool upcycle idea.
0:15:11 > 0:15:14- Not a hi-dear.- Hi, dear?- No, idea. - CREW:- Hi, dear!
0:15:14 > 0:15:19And the thing is, even when we get it right, things can still go wrong.
0:15:19 > 0:15:21- I reckon... - SHE SCREAMS
0:15:21 > 0:15:23SHE LAUGHS
0:15:23 > 0:15:25You'll be wearing goggles after that.
0:15:25 > 0:15:27Oh, my gosh. Oh, my gosh.
0:15:27 > 0:15:29That couldn't have gone any worse.
0:15:29 > 0:15:32Thing is, they're all helping each other, I'm here on me own.
0:15:32 > 0:15:33Right.
0:15:36 > 0:15:38- DENGINEER:- Yeah, don't touch the plywood.
0:15:39 > 0:15:40What am I going to do?
0:15:40 > 0:15:42I don't know, Mark, it's broken, mate.
0:15:42 > 0:15:45Sege? Sege?!
0:15:49 > 0:15:51We do make a good team, don't we, Lozza?
0:15:51 > 0:15:53Yeah, we do, actually. We really do.
0:15:53 > 0:15:55And it's great that you don't mind that I beat you
0:15:55 > 0:15:57- at everything as well.- Uh, what?
0:15:57 > 0:15:59Well, I...I think it's great that you, you know,
0:15:59 > 0:16:01you're such a good loser. It's amazing.
0:16:01 > 0:16:04Seems to me that you've got some kind of, like, selective memory loss
0:16:04 > 0:16:07or something, Mark. Better...better get that checked out, mate, yeah?
0:16:09 > 0:16:11MARK: One, two...
0:16:11 > 0:16:15'Me and Lozza have pitted our wits against each other at, well,
0:16:15 > 0:16:18'pretty much everything this series.'
0:16:18 > 0:16:19HE LAUGHS
0:16:19 > 0:16:22'But, whatever the challenge, you can be sure of one thing -
0:16:22 > 0:16:25'Mark likes to think he's the best.'
0:16:25 > 0:16:28Beat that! Yes!
0:16:28 > 0:16:30'But after months of den building,
0:16:30 > 0:16:32'we finally found Mark's Achilles heel.'
0:16:32 > 0:16:36There is no better painter on the Dengineers than moi.
0:16:36 > 0:16:37Oh.
0:16:38 > 0:16:40Olga?
0:16:40 > 0:16:42- Olga?!- Yeah?
0:16:42 > 0:16:43Quick. I've painted the red.
0:16:45 > 0:16:47Unlucky, Marky boy.
0:16:47 > 0:16:48Speaking of challenges,
0:16:48 > 0:16:51there's been one this series that has been totally
0:16:51 > 0:16:52out of our control...
0:16:54 > 0:16:55..the weather.
0:16:55 > 0:16:59Yeah, we've had our fair share of rain this year.
0:16:59 > 0:17:02We had showers in Surrey when building our plane den.
0:17:02 > 0:17:06We had bucket-loads of rain in Manchester on our community den.
0:17:06 > 0:17:09And in Cardiff, we had torrential rain storms to contend with
0:17:09 > 0:17:12when building Joshua's DJ den.
0:17:12 > 0:17:15These downpours threatened to wash out our builds,
0:17:15 > 0:17:17but it was in Leeds, at Carrie's gingerbread house den,
0:17:17 > 0:17:20where we faced our most dangerous weather challenge.
0:17:20 > 0:17:22If the wind gets too strong,
0:17:22 > 0:17:25we'll have to just stop doing the shingles today, cos it could
0:17:25 > 0:17:27genuinely get quite dangerous.
0:17:27 > 0:17:29There's stuff we can still be doing inside,
0:17:29 > 0:17:31so we've not really thought about that yet. As you can see,
0:17:31 > 0:17:32it's really windy.
0:17:34 > 0:17:36Fortunately for the Dengineers, though,
0:17:36 > 0:17:39the fierce winds eventually died down
0:17:39 > 0:17:41and the team were able to push on.
0:17:46 > 0:17:47Building complicated dens
0:17:47 > 0:17:50comes with loads of engineering challenges too
0:17:50 > 0:17:52and this series, we've had plenty.
0:17:53 > 0:17:57We've seen the engineering behind a retractable dome in the style of the
0:17:57 > 0:17:58Taj Mahal in India.
0:18:00 > 0:18:03We've found out how wind turbines work.
0:18:05 > 0:18:09And we've seen how a staircase can support the weight of 20 people
0:18:09 > 0:18:13despite looking like it's floating in thin air.
0:18:13 > 0:18:17But our favourite engineering explanation had to be on
0:18:17 > 0:18:20the plane den when Sege used a couple of bricks and some card
0:18:20 > 0:18:22to show me why a curved roof is stronger than a flat one.
0:18:23 > 0:18:26This is your flat top - that's not your roof, OK?
0:18:26 > 0:18:28But if I place that brick on there...
0:18:28 > 0:18:30- Yeah.- ..you can see what happens to it.
0:18:30 > 0:18:31- Yeah, yeah.- Very, very weak.
0:18:31 > 0:18:35- Yeah.- It has no support of its own to speak of, so it just caves in.
0:18:35 > 0:18:39However, if I take this card and bend it into an arch,
0:18:39 > 0:18:42into the shape of a Nissen hut,
0:18:42 > 0:18:46and then I place this half-brick on top.
0:18:46 > 0:18:48- Ta-da! - Magical!
0:18:48 > 0:18:49- You see?- That is really clever.
0:18:49 > 0:18:52And that's why an arch is so much stronger.
0:18:52 > 0:18:54It's self-supporting.
0:18:54 > 0:18:55Ah, that's fascinating.
0:18:55 > 0:18:58So that's what it's going to be like on Philip's den.
0:18:58 > 0:19:00- Without the half-brick. - Let's take the bricks away.
0:19:00 > 0:19:03- We'll take the bricks away. - We don't want the bricks.
0:19:03 > 0:19:05- That's magical!- So Philip's den's going to look like that.- Amazing.
0:19:08 > 0:19:12We have made some absolutely brilliant dens this series.
0:19:12 > 0:19:15- They have been amazing, haven't they?- They've been so, so good.
0:19:15 > 0:19:19But imagine one great, big, huge,
0:19:19 > 0:19:20ultimate den!
0:19:23 > 0:19:27Our dream den would have to have the size and scale of our amazing
0:19:27 > 0:19:29community den in Manchester.
0:19:29 > 0:19:31Well, there's no doubt about it - it's got to get finished.
0:19:31 > 0:19:33We're not even going to consider a backup,
0:19:33 > 0:19:34we're just going to get it done.
0:19:34 > 0:19:36And for the outside of the den,
0:19:36 > 0:19:39we'd have to go for the colourful retro exterior
0:19:39 > 0:19:41of Soibi's journalism den.
0:19:41 > 0:19:45We'd cover the roof in the stylish shingles from
0:19:45 > 0:19:46Carrie's gingerbread house den.
0:19:46 > 0:19:48CHEERING
0:19:48 > 0:19:49And on said roof,
0:19:49 > 0:19:53we'd have the solar panels and wind turbine from Whitney's eco-den
0:19:53 > 0:19:56to allow our den to make its own electricity.
0:19:57 > 0:20:00The inside of our super den would have the laser effect lighting
0:20:00 > 0:20:02from Joshua's DJ den.
0:20:03 > 0:20:06The mega-cool hidden desk from Eleanor's magical library den.
0:20:08 > 0:20:10And the pilot's chair from Philip's plane den.
0:20:12 > 0:20:15This den needs extra seating for when our mates come round,
0:20:15 > 0:20:18'so we'd take Aaron's magnificent throne from his Bollywood den.'
0:20:18 > 0:20:22Oh, this looks ace! Look at that!
0:20:22 > 0:20:25And there would deffo be a place for the
0:20:25 > 0:20:27humongous projector from Lola's cinema den.
0:20:27 > 0:20:29'And last but not least,
0:20:29 > 0:20:33'we'd have the awesome trap door from Rufus' adventure den.'
0:20:33 > 0:20:34- Hello, trap door!- Whoa!
0:20:34 > 0:20:39Now, that, Lozza, really would be the ultimate dream den.
0:20:43 > 0:20:46None of our brilliant dens would have been possible without our
0:20:46 > 0:20:47brilliant designers.
0:20:47 > 0:20:50Yeah, we've had five of the top creative minds in the world
0:20:50 > 0:20:53- working on our dens. - And, boy, did they do good.
0:20:54 > 0:20:58Our five awesome designers have been responsible for producing
0:20:58 > 0:21:02some of the most complicated and ambitious builds ever.
0:21:02 > 0:21:04You just want it to move that way slightly, towards Greg.
0:21:04 > 0:21:08And they each bring a unique style and creativity to their dens.
0:21:13 > 0:21:16She's a master of designing huge-scale dens
0:21:16 > 0:21:18which make her builds stand out from the crowd.
0:21:18 > 0:21:21- What do you reckon? - It's fantastic.
0:21:21 > 0:21:23- You like it?- Yeah.- You like the colours?
0:21:23 > 0:21:25- Yes.- Yes!
0:21:25 > 0:21:27And Olga's not afraid to take a risk,
0:21:27 > 0:21:29as we saw on the journalism den when
0:21:29 > 0:21:32she decided to use a material so delicate
0:21:32 > 0:21:36that one false move with a drill would spell disaster for the den.
0:21:38 > 0:21:40I'm looking a bit worried cos this is the most important part
0:21:40 > 0:21:42of the den.
0:21:42 > 0:21:45So, literally, every single screw can damage the acrylic and it can
0:21:45 > 0:21:49snap. And if it snaps, we have nothing to replace it with.
0:21:49 > 0:21:52And when she's not designing and building dens,
0:21:52 > 0:21:55our Olga loves to throw some shapes on the dance floor.
0:21:55 > 0:21:56This is the best bit.
0:22:01 > 0:22:02Next up...
0:22:04 > 0:22:07With over 30 years' experience in the building industry,
0:22:07 > 0:22:09he's the daddy when it comes to designing dens.
0:22:12 > 0:22:14Easy! Easy! Come on, let's get cracking.
0:22:14 > 0:22:16Do you think that one needs to go back...?
0:22:16 > 0:22:18Sege's attention to detail is legendary,
0:22:18 > 0:22:20as we saw with the plane den,
0:22:20 > 0:22:23when he combined Philip's two favourite World War II planes
0:22:23 > 0:22:25into the den of his dreams.
0:22:25 > 0:22:27- Wow!- You like it? - This looks incredible!
0:22:27 > 0:22:29- It's cool, isn't it?- Thank you.
0:22:31 > 0:22:35Sege is a busy man on his builds and likes to keep his energy levels up
0:22:35 > 0:22:36whenever possible.
0:22:36 > 0:22:39- How many of them have you had? - HE GRUNTS
0:22:39 > 0:22:41- I love these.- Unbelievable.- Try one.
0:22:41 > 0:22:45- I've had one, they're lovely, but that is ridiculous.- I know.
0:22:48 > 0:22:52She's an awesome architect who loves to think big with her designs.
0:22:52 > 0:22:56I've started looking at your ideas and I've come up with
0:22:56 > 0:22:58a woodland theme den.
0:22:58 > 0:23:03Maral's got loads of creative flair, as we saw in Lola's cinema den
0:23:03 > 0:23:06when she turned a fun photo shoot into personalised film posters
0:23:06 > 0:23:08for the outside of the den.
0:23:11 > 0:23:15Maral loves getting stuck in, but she also runs a tight ship.
0:23:15 > 0:23:18Lauren, you can't be eating all of the popcorn!
0:23:18 > 0:23:19Get out!
0:23:19 > 0:23:22And last but not least, we've got the tremendous twosome.
0:23:24 > 0:23:27The great thing is, it's all made out of recycled materials,
0:23:27 > 0:23:28or reclaimed materials.
0:23:28 > 0:23:31And the other thing we've done is, we've got a wind turbine
0:23:31 > 0:23:32on the corner that captures the wind...
0:23:32 > 0:23:35- Oh, yeah!- ..so that will help to power it.
0:23:35 > 0:23:39These architects and lecturers have over 40 years' experience designing
0:23:39 > 0:23:40amazing structures.
0:23:41 > 0:23:44These guys love pushing the boundaries of den building
0:23:44 > 0:23:47and showed this with their crooked and wonky designs for Carrie's
0:23:47 > 0:23:48gingerbread house den.
0:23:48 > 0:23:51I think the wonkiness, like, really paid off.
0:23:51 > 0:23:52I think it looks amazing.
0:23:52 > 0:23:55Proper wonk factor, innit?
0:23:55 > 0:23:57As well as designing some amazing dens,
0:23:57 > 0:24:01Tony and Satwinder have also given us some mega LOLs.
0:24:01 > 0:24:03This naughty little knob won't go on!
0:24:05 > 0:24:07- I'm just going to stamp this one. - LAUREN LAUGHS
0:24:09 > 0:24:13These five awesome designers all bring different styles and skills
0:24:13 > 0:24:16to their work, but they all have one thing in common -
0:24:16 > 0:24:18they produce amazing dens.
0:24:22 > 0:24:26We have absolutely loved building these fantastic dens.
0:24:26 > 0:24:27But it's not what we think that counts.
0:24:27 > 0:24:31Let's see what the Dengineers and their friends and family thought.
0:24:31 > 0:24:33Guys, are you ready to see your den?
0:24:33 > 0:24:35- ALL:- Yes!
0:24:35 > 0:24:37CHEERING
0:24:39 > 0:24:42Five, four, three,
0:24:42 > 0:24:43two, one...
0:24:48 > 0:24:50What do we reckon?
0:24:50 > 0:24:52It's amazing!
0:25:03 > 0:25:05Oh, my gosh, it's amazing!
0:25:05 > 0:25:07What do you reckon, Whitney?
0:25:07 > 0:25:09Oh, it's so cool, I love it.
0:25:09 > 0:25:12- DAD:- Wow!
0:25:12 > 0:25:13Whoa!
0:25:13 > 0:25:16That is epic!
0:25:16 > 0:25:17That's so cool.
0:25:17 > 0:25:19Do we like it?
0:25:19 > 0:25:22- ALL:- Yes!- Have a look round, come on.
0:25:22 > 0:25:24Go, go, go, go, go.
0:25:27 > 0:25:30I think it's so good! Oh, my gosh,
0:25:30 > 0:25:33it has so many different colours,
0:25:33 > 0:25:34it's amazing.
0:25:34 > 0:25:37Welcome to your news den.
0:25:39 > 0:25:40Whoa!
0:25:42 > 0:25:43Come on.
0:25:45 > 0:25:47Whoa!
0:25:47 > 0:25:48Wow!
0:25:49 > 0:25:51That's fantastic.
0:25:51 > 0:25:52Lola!
0:25:53 > 0:25:57Oh, look, "Lola's Cinema"!
0:25:59 > 0:26:01Wow! It's incredible.
0:26:01 > 0:26:03That is so cool.
0:26:03 > 0:26:05It's just absolutely brilliant.
0:26:05 > 0:26:06More than he could ever want.
0:26:06 > 0:26:09- Oh, mum!- Aw!
0:26:09 > 0:26:11- Bless her!- Group hug.
0:26:11 > 0:26:13I'm really happy with my den.
0:26:13 > 0:26:16- Thank you, Sege.- Oh, my pleasure, it's been fantastic.
0:26:16 > 0:26:19It's been just as much fun for me as it is for you.
0:26:19 > 0:26:20I've had a great time.
0:26:20 > 0:26:23Welcome to DJ JJ Josh's club.
0:26:23 > 0:26:24- Come on in.- LAUREN:- Come on in!
0:26:24 > 0:26:25CHEERING
0:26:30 > 0:26:31SHE GASPS
0:26:32 > 0:26:33Whoa!
0:26:33 > 0:26:35That is amazing!
0:26:38 > 0:26:40Whoa!
0:26:40 > 0:26:42Oh, Carrie, this is well good.
0:26:42 > 0:26:45This den is, like, the best thing ever.
0:26:56 > 0:26:58Well, we are nearly done, Mark.
0:26:58 > 0:27:00I know, Lozza. We've seen the great surprise hits.
0:27:00 > 0:27:02The masses of hard work.
0:27:02 > 0:27:04The bits that didn't go so well.
0:27:04 > 0:27:07And all the amazing people that made this such a fantastic series.
0:27:07 > 0:27:09There's only one thing left to see...
0:27:09 > 0:27:11- BOTH:- The finished dens!
0:27:39 > 0:27:42This has been an absolutely incredible series,
0:27:42 > 0:27:45and if you want to see more Dengineering action,
0:27:45 > 0:27:46then visit the CBBC website.
0:27:58 > 0:28:02And, of course, there is only one way to say goodbye.
0:28:02 > 0:28:05- ALL:- This den is done!
0:28:05 > 0:28:06CHEERING