How to do a sub-base and concrete floor to an extension 

Great. Explained a lot of unanswered questions👍Thanks Chris

Enjoy watching your video

Excellent, thank you Chris really great help

Always enjoy your vids chris

Cheers Chris. That will be handy for tomorrow 😉😧

do you have a video of you doing the roof work on this project? would love to see that.

Excellent job Chris. Thanks for sharing that. Learned a couple of things I didn't know! :)

Great videos! One question.. Why do you use PIR insulation instead of polystyrene?

Hi Chris, why the additional layer of visqueen on top of the insulation?

Hi Chris. So it's fine to have the screed above dpm and dpc level?

how does the concrete not cruch the foam and eventually sink very badly???

Chris, really unhappy about all that weight of concrete sitting on essentially plastic foam. Is it not better to lay the foam insulation on the concrete?

I've just had a floor laid like this except they didn't put in insulation. I'm having underfloor heating from an air source heat pump. Is it ok there's no insulation in the floor?

Brave guys. No shirts in December.

i was always taught that the insulation goes under the screed not the concrete, or is there a reason its done differently here?

What material is the insulation made of?

Is this the last video following this job?

Great

So you don't actually have to have screed?

How come only single skin of block up off the trench blocks for this build and not a cavity wall? Any more vids to come on this extension please?

Hi why the extra layer of membrane?

Tip - dampen your hardcore, water is a fantastic compaction aid.

Why do people use screed instead of just concreting up to ffl?

Great vid, but I’d hate to work for you, it’s a bit belts and braces. 2 stages of whacking the hardcore, 2 layers of damp proof membrane, getting a level out to make sure the concrete is level are all way over the top 🤔

whacker = compactor

Overkill! Use a laser for putting the concrete in, Much quicker and easier. Before you mention the price of them they are quite cheep nowadays.

Hire a dumper