Drywall What Is Standard?

[LiteForce]

Hello!

We are wondering what the correct standard is regarding the thickness of plasterboards?

When looking for boards, there are different thicknesses like 13mm, 12.5mm and then they have varying lengths and widths, which does not make the choice easier. What thickness, length, and width are preferable when plastering over underlying plywood? Furthermore, are the same boards used for ceilings as for walls? Hope someone knowledgeable here can clarify this question in the plasterboard jungle.

 

[hempularen]

The thickness I thought was standard 13mm. It seems they've changed so that 12.5mm is a new standard.

Choose the length based on what fits. The most common standard length is 2.4m. But if you're building an interior wall that's a little more than 2.4m high, then you choose 2.5m, etc. To avoid unnecessary seams.

The width used to be 120 cm as standard. That width is quite heavy and awkward to handle. Therefore, professionals nowadays almost exclusively use 90 cm wide boards. It results in a few more seams to plaster, but the board is more manageable for one person.

 

[hempularen]

The same panels are used for the ceiling as for the walls. However, there are special ceiling gypsum boards. They are made with visible joints in a smaller, more manageable format, resulting in a checkered ceiling with V-shaped gaps between the panels.

If you want a smooth ceiling, you use regular gypsum boards. It's extremely helpful to rent a panel lift, which costs just a few hundred kronor over a weekend. You place the board on the lift, crank it up to the ceiling, fit it precisely, press it against the ceiling with the lift, and then screw it in place. If you plan to mount panels without the panel lift, you should be at least 3 people.

 

[LiteForce]

Thank you for a great informative answer hempularen, now the choice of records became much easier

 

[Joh_81]

The width used to be 120 cm as standard. That width is quite heavy and cumbersome to handle. Therefore, professionals nowadays almost exclusively use 90 cm wide boards. It results in a few more joints to plaster, but the board is more manageable for one person.

Of course, the professional carpenters use 900 boards, they're not the ones plastering.
It does require a bit more studs since they need to be placed closer together, and insulation intended for cc 450.

 

[RoBo]

The 90 sheets came because the Work Environment Agency required it. At 120 sheets, it states that two people should carry them. Therefore, too heavy for one man/woman.

 

[epw]

Of course, the professional carpenters use 900-panels, they aren't the ones doing the plastering.
It does require a few more studs since they need to be closer together, and insulation suitable for cc 450.

But they are the ones who have to live with the body they have left after a working life of lifting and hauling.

 

[Lutte]

The 90 boards came because the Swedish Work Environment Authority required it. For 120 boards, it is stated that two people should carry them. So too heavy for one person.

Yes, they still weigh 27kg, which is not little. Almost as much as my small toolbox at work. So one can understand that carpenters shouldn't lift them off the Starke Arvid wagon and lean them against the wall, holding them with one hand while screwing with the other.

 

[Thomas_Blekinge]

But what is it that requires the boards to be 13 mm thick? Rigidity?

 

[Isakare]

That they are exactly 13 mm is a remnant, just like lumber, which used to be in inch measurements. They somewhat carelessly translated half an inch to 13 mm, even though 12.5 is more accurate (12.7 mm).