We have a split-level villa built in 1988. In the lower floor, there is 22 x 95 mm spaced paneling and on that 6.5 x 280 x 1800 mm ceiling panels in masonite (it was primed white from the factory). After about 20-25 years, the ceiling in one bedroom started to sag. I pressed it up and fastened it with staples (Rapid 34 gun and probably 10.6 x 14 x 1.3 mm staples). I removed a ceiling molding to locate the exact position for the spaced panels and used a laser for marking where to shoot the staples.
Now I've noticed that the ceiling in the living room and another bedroom is starting to come loose, so it’s time to fix these as well. I've searched for instructions online for a suitable method, since they are relatively thin ceiling boards with tongue/groove, staples seem like a good method. The best match of instructions for my ceiling suggests a width of staples of 11 mm, which I agree with, but not the recommended length of at least 35 mm.
Spaced panel 22 mm
Ceiling board at the thickest spot 6.5 mm, perhaps 3 mm through the tongue.
I was thinking of using a staple length of 14 mm, is that reasonable or is there something I'm not realizing that justifies a 35 mm length?
The spaced paneling is hard after 30 years of drying, I noticed during a test shot.
