Just re-read that thread, and my post came after the mention of Red Label lining paper (The Toolstation one). That stuff has quite a high pulp content, so for that reason, I would be careful with edge gaps in the first instance. My comments were about the Red Label, not the paste-the-wall stuff.

Some liners have a higher pulp content than others, so the chance of shrinkage can be greater, and using powder paste (with a higher water content) can make this effect more pronounced. Leaving a gap with what I've just described, could cause problems, and keeping a tighter edge in these situations would be more prudent, just in case. This wouldn't really affect a paste-the-wall liner that the thread originally mentioned.

But with a liner with a lower pulp content (or a non-woven) and the use of ready-mix, the chance of shrinkage isn't really an issue, so leaving a small gap is a lot safer.

You had me thinking there bradley

Thinking? Oh, no. What have I started?

Don't worry - It doesn't happen often.

Thanks fellas I guess if you were lining for wallpaper then you could but joint them and after it had dried, if they had overlapped a tad then a quick rub down along the seam would solve the problem - no?

Yes, sort of ... but it would leave the paper feeling rough.

I would think it would be impossible for paper which is butted to then start overlapping when it dries. Paper can shrink but not expand while it dries.

Paste-the-wall paper is the best to use as it won't shrink.