Eml on timber frame vented or not will crack to fook. Render carrier board and a thin coat render is what u need budJust rendering an extension on eml and had a call from the client who had a building in spector round and has told him it needs to be vented? In 40 Yr never heard this any one know what he's on about
Nhbc say its omitted from building regulations?Timber frame structures are natural materials…. They have moisture in the timber.
Cladding is weatherproof, if directly applied to a timber frame it traps the moisture in the structural timber, as well as having the dew point directly behind it (or maybe even in the structure), adding more water to the structure directly!
Moisture, moisture, moisture …. All trapped within a natural material where a cladding is directly applied… eventually it will cause the timber to degrade and rot!
The timber frame is structural, so the structure will collapse
This has happened….! The UK building regs, insurance providers and inspectors demand an open (top and bottom) cavity between cladding and natural structures… Think about it, cavity between timber frame and Blockwork as well….
This is a major issue in countries with damp and colder environments….
The issue gets worse when you get moisture on your car / van in the morning - that is dew. But, in a building without a cavity allowing it to drain or vent away, it will be stuck in the structure for a long time…
Sorry buddy, been known about and regulated for decades!