Dimensions of roof battens in the overview

The roof battens lie across the rafters and carry the roof tiles or roof panels and must reliably shoulder a high weight. The cross-sections and lengths for roof battens have therefore been specified in a DIN standard.

Roof battens according to DIN standards

The Association of the German Sawing and Wood Industry e.V. has agreed on DIN standard 4074 for roof battens together with the trade associations, especially the roofing trade, as well as with the construction trade association.

  • Also read - Roof battens dimensions - a small overview
  • Also read - Guide for impregnated roof battens
  • Also read - Small buying guide for roof battens

All quality guidelines for roof battens are laid down in it. The permitted level of residual moisture in the wood of 20 percent is also specified here.

Cross sections of roof battens

Here are some dimensions of roof battens, with the associated sorting classes according to DIN 4074 for roof battens. At the same time, the maximum span is also given for these cross-sections.

  • 24 x 48 millimeters - up to 0.70 meters span - sorting class S13
  • 24 x 60 millimeters - up to 0.80 meters span - sorting class S13
  • 30 x 50 millimeters - up to 0.80 meters span - sorting class S10
  • 40 x 60 millimeters - up to 1.00 meter span - sorting class S10

Sorting lengths for roof battens

In the timber trade, for example, the following lengths are available sorted as packages. This is just a small overview of the possible cross-sections and the available lengths.

  • 18 x 48 millimeters - from 3.00 to 4.00
  • 24 x 48 millimeters - from 1.35 to 5.00
  • 24 x 60 millimeters - from 4.00 to 5.00
  • 28 x 48 millimeters - from 1.35 to 6.00
  • 38 x 68 millimeters - from 3.00 to 6.00
  • 30 x 50 millimeters - from 1.35 to 6.00
  • 40 x 60 millimeters - from 3.00 to 6.00

Determine the appropriate length

Not only the cross-section of the roof battens is important, but also the required length. Lengths of six meters or more are significantly more expensive than short roof battens, so you should determine the shortest possible length you need.

Tips & Tricks It is not absolutely necessary that roof battens are impregnated. You are not exposed to direct weather and you do not have to pay this extra charge, which is often charged for it. There is also no risk from insects and fungi with roof battens.