Which Way up Underlay?

If you are using rubber underlay, it should be face-down so the rubber is against the floor and the backing faces up. Foam underlay should also be face-down, with the coloured film on the floor and the backing face up.

What side of underlayment faces up?

If you are using rubber underlay, roll it out rubber side down with the paper facing up - if you're using polyurethane underlay, like the ones we supply, the printed side should face up.

Does it matter which way you lay underlay?

Lay the carpet underlay

It's important to ensure the underlay is rubber or foam-side down. Try to keep the underlay as straight (and bump-free!) as possible and secure in place – either by stapling inside the gripper or by using an effective adhesive. Each roll of underlay should be laid in the same way.