Exclusive: Blockhead's sneaky observation about co-star aired in unseen video you won't see on TV: 'Something shifty is going on'

EXCLUSIVE: You never want to go head-to-head with Foreman Dan, especially not in your first week on The Block.

But that's exactly what happened when Han disobeyed Dan's orders to not waterpoof without a license.

You can see exactly how the confrontation played out in an exclusive, extended and unseen video above.

Stream every episode ever of The Block for free on 9Now.

After Han and Can's waterproofer slept in, the girls were feeling the pressure to get their second coat of waterproofing under way.

THE BLOCK EP 2 RECAP: Waterproof Wednesday hits hard as a disaster leak threatens one team's entire week

Han told Dan and site manager Aidan that she needs their approval of her "one-and-a-half coats" of waterproofing.

According to Dan, and everybody else in the construction industry, a one-and-a-half coat job is completely unheard of and Dan sensed something wasn't quite right.

"Something shifty is going on here," he said.

After telling Han not to waterproof until a licensed waterproofer was on site, he caught her red-handed doing just that.

He wasted no time confronting the Blockhead.

"You've disobeyed my instruction, so now I've lost trust here. You've just gone behind my back," he scolded Han.

Han was immediately apologetic and at one point broke down in tears.

"I feel like I just got told off by my parents as a kid," she sobbed into partner Can's arms.

After the confrontation with Han, Foreman Dan made his rounds through The Block to remind the other contestants no waterproofing without a licensed waterproofer present was allowed.

WATCH: Block star's sneaky on-screen act backfires: 'She tried to steal'

"I caught someone trying to do it on their own, then they lied to me about it. If that happens there's going to be severe consequences," Dan warned Robby and Mat in House 5.

While Dan didn't specify who he was talking about, it didn't take the boys very long to figure it out.

"Word on the street is there's been somebody cutting corners, jumping the queue," Mat told cameras.

As Mat spoke to cameras, Han interrupted to generously offer her plasterer to them.

It was in that short time that Mat made a sneaky "little observation" of his own.

"Did you see her hands? Blue! They were all blue," he said referring to the colour of the waterproofing solution covering Han's hands.

"Her hands would be water tight. Even if she washed her hands, it would be like water off a bathroom floor," Mat made a cheeky dig at Han.

The Block airs Sundays at 7pm and continues Monday to Wednesday at 7:30pm and Sunday at 7:00pm on Channel 9 and 9Now.

Stream every episode ever of The Block for free on 9Now.

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