If you are going to nail up ceiling paneling 15x120 mm on cross battens in the ceiling with both straight and sloped ceilings; can you nail these in the tongue or do you have to nail visibly? Will be using a nail gun. I have heard that if you nail in the tongue there might be a risk that it's not sufficiently stable and that the boards could "creep out" when it's as wide as 120 - true or not? The ceiling panel is pre-lacquered so the nails would be visible. How closely should you nail?
Personally, I never nail into the tongue, as it's difficult to fix the next board since the board being nailed is pressed downward...
I usually nail visibly, for example with finishing nails, or alternatively place a cover over it...
I also first only nail the "Rear" nails, meaning those located at the rear edge against the preceding board... then when I've nailed the next REAR, I nail the front of the last board...
A nail gun is taboo for me when it comes to "fine carpentry"... hammer and nails are the best, in my opinion.
Additionally, if you "save" the last hammer strike, you avoid the ugly hammer mark that can occur if you're not careful...
I usually nail visibly, for example with finishing nails, or alternatively place a cover over it...
I also first only nail the "Rear" nails, meaning those located at the rear edge against the preceding board... then when I've nailed the next REAR, I nail the front of the last board...
A nail gun is taboo for me when it comes to "fine carpentry"... hammer and nails are the best, in my opinion.
Additionally, if you "save" the last hammer strike, you avoid the ugly hammer mark that can occur if you're not careful...