large scale tree felling on slope damages house downstream

[Anna12]

Hello,

my grandparents live on a slope in the forest in Finland. 

the forest owner decided to fell a whole slope of trees a few years ago up stream of the house on the slope. 
last year they noticed damage to the property rotting foundations. 
We think the water isn’t being absorbed by the large amount of trees now and is running down from the forest slope under ground and has destroyed the foundations of the house while it has also visibly changed the shape of the land surrounding the house. 
Eg. There is a newly formed stream to the side of the house running to the lake. 

my grandparents can’t live there because no electricity now and they are trying to get evidence of what caused the problem , their own house insurance doesn’t cover this as it’s to do with the foundations . 
surely there is a law in Finland that prevents felling causing this kind of problems ?
Please advise ! 

 

 

[Mick Dempsey]

I don’t think there’s many experts on Finnish property law on here Anna.

Sorry