Laying Joists On A Concrete Floor

[mol]

Hi! Can anybody tell me whether it is better to use anchor bolts or splitz to hold down joists on to a concrete floor? When laying a wooden floor on joists, is black plastic necessary as a moisture barrier and if so, why would you put glue on the joists to hold them down? ( aren't you just glueing the joist to the plastic)

[Tools]

Hi Mol...what are splitz?

[mol]

hallo,

A splitz is a funny looking/shaped nail that is used for anchoring flooring to concrete slabs.

[glock40sw]

G'day.
I see you are in Brisvegas.
Do yourself a favour and drop into The Timber Queensland office in Brunswick Street in the valley.
They have all the info you will ever need.

When you say joists, do you mean battens?

joists are 4x2, 6x2 etc etc etc. Battens are 3x1, 3x1and 1/4, 2x1and1/2 etc etc etc.

menbrane the slab with 2 micron poly overlap the edges 300 mm tape the joins with high quality 200 mph tape. bring the poly sheet 70mm up the walls and tape to the wall. the Skirting will cover it, Don't worry.

Install the battens at 400 centres with splitz at 400 centres.

[mol]

Thanks for the info Trevor,

Could I ask another q?

Is the use of 6mm X 40 mm dyna bolts recommended or do you have to use splitz. I'm getting confused with terminology. I have bought 500 dynas are these suffice? The battens I'm using are 100mm x 23 mm. What size would you recommend? Hope you can help me!

Neil

Just Sth of Bris.

[Tools]

hallo,

A splitz is a funny looking/shaped nail that is used for anchoring flooring to concrete slabs.

I am none the wiser! I googled it,but that didn't help either.......

[boban]

There are a few different brands available.

Hilti make DBZ's (have a look at the PDF which you will find here http://www.hilti.com.au/holau/modules/editorial/edit_singlepage.jsp?contentOID=1009547 ) which are easily the most expensive.

Ramset, Reid and Scan make a aluminium pin with a nail inside. They have a mushroom head and there is a version that is also nylon (not that you would use it for flooring).

I also saw some different types at Ankors flooring which follow the same principle. While I think the Dynabolts will work, it will take forever and a day. If its an option take the dynabolts back and get the mushroom type fixings.

[glock40sw]

G'day Neil.
Mate, No worries.

[Bally]

There is a heap of instructionals on the web on how to go about wat your doing. I thought I read somewhere not to cover concrete with plastic as the slab needs to still breath? :confused:

[Carpenter]

This should clear up the confusion with splits. I've used these for timber battens for floors & they're easy & quick.http://www.powers.com.au/products/focus.aspx?bgid=83

[julianx]

I think I recall some lengthy discussions about this topic on these forums,do a search and you should find them.

[glock40sw]

There is a heap of instructionals on the web on how to go about wat your doing. I thought I read somewhere not to cover concrete with plastic as the slab needs to still breath? :confused:

G'day.
If you DO NOT cover the slab with plastic membrane, you can kiss your timber floor goodbye.
Have a look at http://www.timber.org.au

D/load the 5 flooring fact sheets.
This is all the info you will need.

Don't take advise from mates, Bunnies sales people, A builder mate of a mate or architects.

Follow the recommendations in these sheets.
If you do, you can't go wrong.

[Bally]

G'day.
If you DO NOT cover the slab with plastic membrane, you can kiss your timber floor goodbye.

:eek: Awww crap, I sealed the concrete with floor paint but no membrane. I sure as hell don't want to pull that floor up and do it again.