Which adhesive?

[Arnold9801]

I'm just about to lay my green chipboard t&g flooring on top of the beams. 

 

I'll screw them down but which adhesive is best to use on the joints? 

 

Arnold9801 

[SuperPav]

Any "D4" adhesive will do the job. This sort of thing: https://amzn.to/3e3I9Vf

 

If you can be bothered, I'd glue the boards to the joists as well, this will result in a much stiffer structure.

[nod]

Caberfix D4

I wouldn’t screw them down 

Better using a ring nail 

[joe90]

My floor was glued only (D4) to joists and themselves, very solid, no squeaks In 2 years.

Edited December 17, 2021 by joe90

[Arnold9801]

Many Thanks for your replies.

[Mr Punter]

It is very messy and does not come off your hands for a couple of days.

[joe90]

53 minutes ago, Mr Punter said:

It is very messy and does not come off your hands for a couple of days.

Nearly as bad as expanding foam ?

[Onoff]

My upstairs 18mm, t&g floor was "screwed" up with PVA and angular ring nails and squeaked like a barsteward.

 

It's a lot better since I put a load of proper, Spax flooring screws in.

[Arnold9801]

I need quite a lot with 100 x8ft x 2ft boards to lay. Would there be much difference if I use normal white pva wood adhesive instead of a D4?

 

The reason I ask is due to availability and need to buy 25litres which I will have to mail order!

 

[bassanclan]

Any D4 will do.

Normal pva is no good.

D4 is expanding glue and much stronger.

Easily available online or from Toolstation or Screwfix

[Arnold9801]

4 minutes ago, bassanclan said:

Any D4 will do.

Normal pva is no good.

D4 is expanding glue and much stronger.

Easily available online or from Toolstation or Screwfix

Is this D4 below suitable?

[JamesP]

I used screws and Caberfix D4  on top of the joists and joints, wear gloves.

[epsilonGreedy]

1 hour ago, Arnold9801 said:

Is this D4 below suitable?

 

It is best applied from a bottle similar in size to a bottle of fairy liquid no larger than one litre with a nozzle.

[Onoff]

Decant into a plastic Lucozade bottle.

[bassanclan]

Before you use it drop the bottle into a bucket of hot water, it will make it more runny and flow easier. For 100 boards i doubt you will use more than 2l

Much easier to use from the purpose made bottles unless that is mega cheap

Edited December 17, 2021 by bassanclan

[SimonD]

I think there is some confusion here about what glues are what. The D4 category is simply a durability category for interior areas exposed to frequent wetting, or external use.

 

What you need is a polyurethane glue that expands within the joints of the boards as well as at the joist board connection. The D4 everbuild glue linked to doesn't do that. @nod    suggested the Caberfix. You can also use the Soudal 30min or 5min PU wood glue, which also gently expands.

 

example PU wood glues:

 

https://www.ironmongerydirect.co.uk/product/soudal-trade-30min-d4-pu-wood-adhesive-290ml-clear-737362?vat=1&shoppingxp=true&msclkid=591dab1002551015fd7acaade429e924&utm_source=bing&utm_medium=cpc&utm_campaign=Shopping > Top Products&utm_term=4580909046907901&utm_content=Top Products

 

https://www.toolstation.com/30-minute-polyurethane-wood-glue/p52489