We have a large lounge with the original parquet flooring suspended over a timber frame. Unfortunately there is always cold air blowing through the parquet flooring leading to heat loss and expensive heating bills.
The flooring resides above the cellar in a crawl space. The cellar is open and very dry, and the crawl space is enclosed within the cellar. There are two large air vents a fraction below the parquet floor level which keep the crawl space and cellar well ventilated.
As the house is over 200 years old, we're keen to keep the ventilation as is, but as the same time insulate at the crawl space level. The timber frame rafters are 100mm, so we're proposing to use 70mm Kingspan (or equivalent) with a 30mm gap. However, as the air vents are at the same level as the rafters, we would be blocking them off. There is no option to put in new air vents or move the existing ones.
Should we use a flexible duct hose to redirect the air vent flow below the new insulation or is there an alternative option? Also, do we need a vapour barrier or anything else to consider?
The flooring resides above the cellar in a crawl space. The cellar is open and very dry, and the crawl space is enclosed within the cellar. There are two large air vents a fraction below the parquet floor level which keep the crawl space and cellar well ventilated.
As the house is over 200 years old, we're keen to keep the ventilation as is, but as the same time insulate at the crawl space level. The timber frame rafters are 100mm, so we're proposing to use 70mm Kingspan (or equivalent) with a 30mm gap. However, as the air vents are at the same level as the rafters, we would be blocking them off. There is no option to put in new air vents or move the existing ones.
Should we use a flexible duct hose to redirect the air vent flow below the new insulation or is there an alternative option? Also, do we need a vapour barrier or anything else to consider?
