Using HardieBacker Board

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I'm putting a new kitchen next month with a tiled floor. I've been doing some reading and think it may be worth investing in HardieBacker Board or No More Ply to firm up my floorboards.

Floor is in good condition, 40yo, but given we're spending a chunk on the kitchen why skimp on 6mm play at £50 if i can get a proper solution for £100 more?

I've read the install guide:
https://www.jameshardie.co.uk/import/Documents/HardieBacker Installation Guide.pdf

I'm going to be up against time getting the kitchen completed as I'm doing it myself and only taking a week off of work (plus two weekends). So.... unless someone is going to tell me not to use such a solution...

I'm wondering how long do I need to leave the board for before tiling? Will it be...
Day 1 - lay boards
Day 2 - tile
Day 3 - grout

Then, whats best way to protect my new floor as I install my kitchen?
 
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Unless you plan on soaking your kitchen it's likely overkill. That said and like you say if it only slightly more to ensure your sub floor doesn't swell in a flood then why not. Your timing looks fine also.
 
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Hi there

HardieBacker installed on a solid timber substrate floor would offer a warranted floor if installed as per our installation guide. 6mm HardieBacker would offer a 10 year limited warranty.

The British standard for over boarding a timber floor is minimum 15mm ply. Therefore if you use under 15mm such as 6, 9, 12mm Ply you aren't meeting code. You have no warranty or cover should the timber cause a tile failure.

Any questions feel free to drop me an email at luke.stratford@jameshardie.com
 
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Hi there

HardieBacker installed on a solid timber substrate floor would offer a warranted floor if installed as per our installation guide. 6mm HardieBacker would offer a 10 year limited warranty.

The British standard for over boarding a timber floor is minimum 15mm ply. Therefore if you use under 15mm such as 6, 9, 12mm Ply you aren't meeting code. You have no warranty or cover should the timber cause a tile failure.

Any questions feel free to drop me an email at luke.stratford@jameshardie.com
Hi Luke,

What type of adhesive do I need for putting HBB on top of wooden floorboards? Is adhesive actually required? - Seems a bit excessive on top of the screws.

Also, is it fair to say I'd be best to lay the boards in opposite direction to the floor joists?

Thanks
 
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Adheisve is required for our warranty. It is only there as a void/gap filler and leveller. The type of tile you are using determines which adhesive is suitable and any can be used under the boards.

The boards need to be laid brick bond, so no seem goes from one side of the room to another. You need to use 12 x screws per m2, this is down from 39 so even quicker. Tape the joints with an alkaline resistant tape and you're good to go.

Check out www.jameshardie.co.uk/HardieBacker for our full installation guide.

Regards

Luke
 
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