Guidebook for impregnated roof battens

In addition to the usual sawn or planed available battens, there is always an impregnated variant. You can read all about impregnated roof battens here.

Background information

According to DIN regulations, roof battens do not necessarily have to be impregnated, since the risk of fungal or pest infestation in the roof structure or in ventilated facades, for which roof battens are generally used, is negligibly small. In individual cases, but that can be quite different. Occasionally, roof battens are also used for other constructions where they come into contact with moisture. There is an impregnation of the roof battens then makes sense of course.

Priced impregnated battens are usually slightly higher - but the price differences are almost always in the cent range per meter.

Current offers

technically dried, 24 x 48 mmbausep.de0,54 EUR / running meter
technically dried, 24 x 48 mmholz-wicharz.de0,42 EUR / m²
raw, untreated 38 x 58 mmholz-wicharz.de0,79 EUR / running meter
impregnated 38 x 58 mmholz-wicharz.com0,87 EUR / m²

What to look for when buying? / Recommendations

When buying, you should make sure that the dealer is actually in the wood grade according to the regulations of the DIN directed, and not according to the formerly used "Tegernseer customs". Many old-established woodworking companies still do that in part.

Observe residual moisture and batten distances

On the one hand, DIN regulations stipulate certain residual moisture values ​​in the structural area - usually less than 20% - and the lath spacing, span and sorting class of the wood must be coordinated with each other - otherwise a corresponding static proof is required. By the way, chemical wood protection is inadmissible for battens according to DIN and must not be used.

Video Board: Condensation and Metal Roofing – Metal Roofing 101 with Todd Miller