>>>Is quick and cheap though
that's what you get when you only spend 150k

That scares me!
I've never ever seen that! Is that done in the UK?

yeah the chipboard type RC, they have been in use for over 40 years in the UK that I know about, the down side is unless they are installed the same way as your plumbing etc your not allowed/suppose to bore any holes over a certain size but the type I used a couple of years ago as per the link are superb, a lot lighter in weight and will span further plus the depth can be reduced by fixing 2 together

This was crucial with the loft conversion I was working on as the head room was limited, it does not seem a lot but we saved 50mm in height which meant the building control officer was satisfied with the overall ceiling height, if we had used conventional timber joist or those cheap chipboard engineered wooden beams then we would not of achieved the headroom required

>That scares me!

What about me, I have to walk on it.

My focus is the opposite of RC's, I don't care about the stuff you can't see just the stuff you can. This is the stairs to the floor.

nearly broke my neck looking at the photo

looks very nice Mark, very nice indeed

For a business I can see the benefits but for a home..... na..... I wouldn't be happy.

We have added Pantone logos since, looks very nice.

I know what you are thinking RC, but no, I just like rainbows.

>thinking

50.5 / 49.5

But which is over half?

Mick, those metal and wood j- joists are cool.  I'm going to show those to my builder, I think she would love them.

Most new housing around here is using the type of manufactured wood I joists, NFFC has pictured, including me.  The town just passed an ordinance requiring a metal tag be affixed to the outside of new homes built with those joists.  They burn through much quicker than solid wood, and the fire department needs to know that before they enter.  Tag gets put near the electric meter.

>quicker

They're kindling suspended in accelerant, for crap's sake.

>>>>They burn through much quicker than solid wood, and the fire department needs to know that before they enter.  Tag gets put near the electric meter.

WOW so instead of addressing the problem they make you put a sign on the house, the UK is very strict with building requirement and even more so with fire regulations, we use different coloured plasterboards, green red blue and grey

green plasterboard = moisture resistant for walk in showers, bathrooms etc
red/pink plasterboard (fireboard) = fire resistance
blue plasterboard = acoustic plasterboard
grey plasterboard = normal board either 9mm or 12mm thick (various sizes) and skimmed for domestic purposes

we used to use 12mm plasterboard which gives half hour fire check and double boarding with 12mm gives 1 hour fire check, this is for encasing any steel or if its flats and you would double board the down stairs ceiling and skim the total area, this has now been changed to using the red/pink plasterboard but is still plastered with board finish to the total area

We do the same. Except I'm not sure about pink and blue color codes --ours is just by thickness.  Greenboard is for wet locations.  But fires burn hotter now due to all the plastics used.

Don't forget double boarding mick on fire areas, or I had to last time.

I like the image Mark, so the painters get the right colours per step.

>>>>double boarding with 12mm gives 1 hour fire check
was you not wearing your glasses when you read my post ?