Hello everyone,
We're currently insulating the external-facing internal walls of our old Victorian house and are trying to address cold bridging issues, particularly with the bay window wall.
We'll use 60mm Steico wood fibre boards, Breasthaplasta Thermal plaster at 2.5 cm, and Contiga Solido tape around the windows and joists for insulation. Before installing the boards, we'll patch the wall holes with NHL2 lime plaster.
I have two concerns and would greatly appreciate your insights.
1. Thermal Bridging at the Bay Window Ceiling
While insulating the wall, we're worried about potential thermal bridging through the roof above the bay window (ceiling), which might not be insulated (we're not sure what's there). What are your thoughts on this? Should we:
• Remove the ceiling and insulate it from the inside, or
• Hire a roofer to insulate it from the outside.
2. Air Vents Above Suspended Floorboards
When we exposed the brick wall, we discovered that the air vents were coming above the suspended floorboards. To mitigate this, I took the following steps and would appreciate your feedback on my approach:
• Fitted a PVC air duct pipe was fitted to direct the air below the floorboard level.
• Filled the excess space around the pipe with polystyrene insulation blocks to ensure the new fibreboard isn't directly exposed to the elements, unlike the old plasterboard. This also provides a solid surface to plaster on before installing the fibreboards.
I would greatly appreciate any advice or suggestions you can offer, and I look forward to hearing your thoughts and recommendations.
Regards,
Val |