I need to replace a part of my sill, about 2 meters (rotten).
The previous sill is 70x120, but that dimension is a bit special nowadays.
Is there any problem with joining three pieces of 45x70 instead, and should I consider anything specific in such cases? Do you have any tips on insulation under the sill? Today there's something that looks like a plastic-wrapped sealing strip (1970s house).
I know it's probably possible to special order the dimension, but I'm in a bit of a hurry to get this done.