Our house has an extension with a crawl space (the rest of the house has a basement). The previous owner had a frozen pipe one winter and was forced to create an entry into the crawl space to fix the damage.
How can I best seal this hole to keep out the cold and unwanted "tenants"? My initial thought was a plywood board over it, but that won't keep out the cold. It is very cold in the extension compared to the rest of the house.
How can I best seal this hole to keep out the cold and unwanted "tenants"? My initial thought was a plywood board over it, but that won't keep out the cold. It is very cold in the extension compared to the rest of the house.
Best answer
Mortar and leca blocks do seal up, but it's good to be able to get in and inspect when needed, right?
Cut a piece of foam plastic and attach it with foam sealant, then attach a fiber cement board over the hole so no uninvited guests come in. That way, it only takes a few minutes for you to open it up again when needed.
Cut a piece of foam plastic and attach it with foam sealant, then attach a fiber cement board over the hole so no uninvited guests come in. That way, it only takes a few minutes for you to open it up again when needed.