Floorboards

akist · 4 Jan 2022

I am considering what floorboards to use. There are design but also supply issues. Space is open, there is no roof covering built yet.

The choices are:

1) Egger protect boards (chipboard), 2440x600, 22mm, tongue+grooved all over, 60 day weather guarantee. Installed with some special glue over the joists, very few mechanical fixings required.

2) P5, Moisture Resistant Chipboard, 2400x600, 18mm, Tongue and Grooved - not sure about weather resistance

3) Structural Osb 3 TG4 2440 x 600 x 18mm, Tongue and Grooved

4) Plywood, 18mm, not tongued

What is the best to use?

jeds · 4 Jan 2022

22mm t&g chipboard. The choice is weather resistant or standard P5. WR is best and higher density but costs a bit more. You should use PVA adhesive in the joints and D4 Polyurethane adhesive liberally on the joists.

ajstoneservices · 4 Jan 2022

Egger protect if you can get it. I am building a house at the moment and had to use Krono fast protect as that was the only board available to us. Whatever board you can get it will cost you dear.

akist · 4 Jan 2022

Thank you!

I read now that D4 glue can be used from -40C to 140C. We are expecting -5C to +5C in the next few weeks. https://www.stick2products.co.uk/products/chipstick-d4-chipboard-adhesive
This was my one worry.

My next worry is longevity, how many years until it comes undone (vibrations etc) ? Should I compliment with screws to be safe?

ajstoneservices · 4 Jan 2022

I started using nails until the actuator in my paslode broke. I think it was due to the cold. I switched to flooring screws. Only problem with that is they sometimes pulled in too deep.

conny · 4 Jan 2022

ajstoneservices said:
I started using nails until the actuator in my paslode broke. I think it was due to the cold. I switched to flooring screws. Only problem with that is they sometimes pulled in too deep.

And the answer to that is to slow down when they are nearly home.

Happy New Year Tony.

big-all · 4 Jan 2022

i personally would avoid d4 glue below about 8 degrees
store it indoors and do not leave it in the cold for longer than nesissery
is its in the sun it will be a few degrees warmer if its been cold overnight it can take a long time to warm up
just checked my everbuild d4 and it says 10 degrees and above for use and between 15+ and 23+ to store

ajstoneservices · 4 Jan 2022

conny said:
And the answer to that is to slow down when they are nearly home.
Happy New Year Tony.

You would I would have learned that by now

Happy new year to you too Terry.

Deleted member 174758 · 4 Jan 2022

big-all said:
i personally would avoid d4 glue below about 8 degrees

Likewise PVA which will start to chalk out at about 2 to 3 degrees, this includes D4 PVA (PU D4 is not the same thing). Also, it's the material temperature which is the significant issue, not the air temperature - leave a pile of boards on an unheated building at this time of year and it might be late afternoon before the boards are warm enough that they don't chill the glue or chalk it out

I've always screwed boards (generally collated) - I dislike nailed chipboard floors as I've had to fix a number where nails have partly missed joists or have started to pull out, something you are far less likely to experience with screws.

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Floorboards

Deleted member 174758

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