What thickness underlay for engineered wood flooring

Question

I'm planning out a lounge renovation, but one thing is tripping me up and I'm getting lots of mixed answers. Just need to know what type and thickness of underlay to use for engineered wood flooring. And what kind of cost am I looking at?

Lovepreet · Accepted Answer

“For engineered wood flooring we usually use a 2–3 mm underlay. Over concrete it needs a built-in moisture barrier; thicker 3–5 mm is only used if extra sound reduction is needed and the manufacturer allows it. Underlay typically costs £2–£10 per m², depending on the type.” and if you  want to know the labour charges it depends on how much area is to work.

Claudiu · Answer

Minimum 5 mm underlay you need to install and about price its depends how many.

Volodymyr · Answer

Толщина подложки должна быть 2-3 мм, в случаях для досок свыше 18 мм толщины, подложка будет до 5 мм

Wallison · Answer

Hello,
How are you?
My name is Wallison.
I can help you. 
Underlay 3mm
Wood Flooring 8 or 9 mm it’s okay.

Robert · Answer

Can lay 3mm  4mm or 5mm. Cost is between £12 - £20 \ sqm2

Costel · Answer

Hi there,for the engineering wood flooring the 5 mm underlay is just good enough

Scott · Answer

For a engineered wood I’d recommend a 5mm fibre board underlay.

Shahida · Answer

3mm underlay, Foil backed protects against moisture. 8mm Laminate. Based on on a 15m2 sqm room. Your materials could cost you around £350, including underlay, Flooring , scotia. If you choose more expensive laminate products price will be higher.

Kirill · Answer

3-6 mm  ...The best underlay for engineered wood flooring depends on the installation method (floating, nail-down, or glue-down) and factors like subfloor type, moisture levels, and desired sound insulation. Engineered wood is versatile, but underlay helps with noise reduction, moisture protection, and minor subfloor leveling.

Andreea · Answer

For engineered wood you normally use a foam or rubber underlay with a built-in vapour barrier. Most are around 2–3mm thick, or up to 5–6mm if you want extra sound reduction. If it’s going over concrete you definitely need the damp proof layer.
Underlay usually costs around £1–£6 per m² depending on the type. Best thing is to match the underlay to the flooring manufacturer’s recommendation so you don’t affect the warranty.

What thickness underlay for engineered wood flooring

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