Hi,
I have a 1790s timber frame building plastered externally over an expanded metal lath (EML). Internally the space between the rafters are in-filled with plasterboard and stuffed with glasswool insulation.
One exposed space shows that where the rafters meet the wall plate you can see the EML and external plaster between the underside of the tiles and the wall plate (I would describe this as the eaves - but happy o be corrected!).
As you can see from the example image below, there are gaps between the rafters, tiles and external plaster/EML. Some gaps are quite large, some are small like the picture and some completely sealed. The irregular look seems to be as the result of inconsistent plastering rather than a design feature.
Questions:
How would this area between the eaves have originally been constructed - would they have had some form of ventilation and if so how would this have been formed/maintained or would the lath and plaster sealed right up to the underside of the tiles?
I've checked out the neighbouring houses from the same period and some appear to be plastered right to the eaves and one appears to have an exposed and more modern looking EML than mine and therefore ventilation between every rafter and these appear to be relatively modern applications - so I can't tell what the original configuration was.
Regards,
Dave
I have a 1790s timber frame building plastered externally over an expanded metal lath (EML). Internally the space between the rafters are in-filled with plasterboard and stuffed with glasswool insulation.
One exposed space shows that where the rafters meet the wall plate you can see the EML and external plaster between the underside of the tiles and the wall plate (I would describe this as the eaves - but happy o be corrected!).
As you can see from the example image below, there are gaps between the rafters, tiles and external plaster/EML. Some gaps are quite large, some are small like the picture and some completely sealed. The irregular look seems to be as the result of inconsistent plastering rather than a design feature.
Questions:
How would this area between the eaves have originally been constructed - would they have had some form of ventilation and if so how would this have been formed/maintained or would the lath and plaster sealed right up to the underside of the tiles?
I've checked out the neighbouring houses from the same period and some appear to be plastered right to the eaves and one appears to have an exposed and more modern looking EML than mine and therefore ventilation between every rafter and these appear to be relatively modern applications - so I can't tell what the original configuration was.
Regards,
Dave
