The crossing of the roof, especially when in wood, is one of the most critical points in the construction of the chimney for biomass appliances, from boilers to stoves.

The industry of chimneys and flues, in recent years, has developed specific and SAFE products, which allow us to respond to the numerous requests of designers and installers. Thus avoiding often complex calculations, which otherwise must be an integral part of the declaration of conformity DM37 / 08.