Removing bumps from lino

[Helveticus]

I would like to lay engineered hardwood flooring over lino which in turn is laid over a concrete floor. The lino is mostly acceptably flat, but it has a few surface bumps which were caused by the feet of heavy furniture. Can these bumps be flattened somehow (sanded, ironed...)? Or should I just cut out the bumps and fill the gaps in the lino? Or do I have to remove all the lino? If so, does the lino adhesive also have to be completely removed (scraped off and/or removed chemically?), or can I simply cover the lino adhesive with self-levelling floor compound?

[Mosaic]

If most of the flooring is stable, level and glued down then filling and smoothing down should work for small areas, but anything bigger than say where a chair leg has been is always going to be a gamble. Are you going to use an underlay in addition? This might help you get away with it.

[Helveticus]

Hi Mosaic, Thanks for the answer. Yes, I plan to lay a 0.2mm damp-proof membrane, then 3mm underlay, then the engineered hardwood flooring. Even so, one should not rely on the underlay to even out bumps.

[The Builder]

Decent 16-18mm flooring would span a few imperfections. As Mosaic says, you'd probably get away with it. My worry would be how you're going to fix it. Gluing would be best, but I don't know how it would take to the lino.
De-luxe option would be to fix 50 x 50mm treated battens to the floor.......... even 25 x 50mm battens (laid flat) ........... put 25 or 50mm of Celotex insulation between them ................... thin polythene over the lot .....them fix the boards with a proper floor nailer (the type you bash with a mallet ........ you can hire them).

[AlBags]

You can't glue to thermoplastic tiles or lino.
I would remove lino. You can hire a medium breaker with tile remover blade.

[Helveticus]

Thanks for the answers. I plan to lay the engineered hardwood flooring floating i.e. not fixed to the subfloor. If I were to lay it over the lino and the bumps were a problem, I could therefore take it all up again, remove the lino (and its adhesive?) and re-lay the engineered hardwood flooring, but it would be a pain to have to do the job again.