Hi,

My patio door from the conservatory into the garden has been getting
harder to open. Yesterday I lifted it out of its frame to find that
the back roller is stuck. Even with application of WD40, it refuses to
spin freely.

How easy is the roller to replace? Are there many different types? I
spoke to one "Double-Glazing-Doctor" type and he said he would have to
take off the bottom of the frame which seems quite likely as there was
no obvious way to remove the roller otherwise. Is taking the bottom of
the frame off easy? Will it just pull off - there are no screws as far
as I can see.

BTW, the door is aluminium.

TIA

Mr F.