I've put down underlay before and I've taken up plenty of dog-stained stuff
which previous owners have left behind. I now want to put some new underlay
down and somehow my brain's got scrambled. Please unscramble my brain and
tell me - flat side up or ridged rubber side up?

Festive cheers

I've put down underlay before and I've taken up plenty of dog-stained
stuff
which previous owners have left behind. I now want to put some new
underlay
down and somehow my brain's got scrambled. Please unscramble my brain
and
tell me - flat side up or ridged rubber side up?



flat side up

LJ

Replace any dodgy (wobbly) floorboards now.
Otherwise in (admittedly) several years you will find the curved one
will end up causing a wear ridge in your carpet, especially if high wool.

Remember that telephone cable you ran between the floorboards?
Don't Do That :-) (note to self :-)
--
DB.