Metal Roof Without Battens

Can a metal roof be installed over my existing shingles without the use of battens.

Metal roof without battens.

This is a bit of a complicated question. Whereas many older metal roofs or metal roofs on larger buildings have been successfully installed over battens rather than solid decking it is the clear preference for residential applications that metal roofing always be installed over solid decking to avoid dangerous and damaging condensation issues. This great question comes from edward c a homeowner who plans to have a new metal roof installed over the aging existing shingles on his single story home. For example elevated battens are standard wood battens that have a block of plastic in some cases wood attached to the underside to elevate.

Note that you can have a metal roof. In most cases there is nothing about a metal roof that increases the need for ventilation beyond what is needed for an asphalt shingle roof. Metal roof installations without an air gap are done all the time. While roof battens are most commonly made of metal or wood they can be made of other materials like plastic or composite there are several different types of batten some combine two materials to get the needed affect.

The key in most cases is having a properly vented attic beneath that. Thanks edward for allowing me to share our correspondence on this frequently asked question. This is the case with most vertical seam products. Types of roof batten systems.

These products usually have an integral airspace or an insulated cavity between the metal and the roof deck. This creates a thermal break which is very similar to a vertically seamed metal roof installed on battens. They re installed before the tile is laid on the roof and may serve more than one purpose. If you do not have good ventilation in the attic then i have some concern about installing the metal roof without battens.

The roofing is manufactured in panels that install using aluminum nails or screws that fasten the panels to wood stripping also known as nailers or battens.