Firstly not sure if this is the correct section but I will ask anyway.
How do you know if you have a lintel or not? Due to the design of our house the two door ways into the kitchen work better with no doors. We wish to take off the door architrave and make very gentle (not 60's overstated) arches.
One door way has plasterboard above it, will it need a lintel or will the load be taken in some other way.
The other doorway is the original back door of the house but the previous occupants built an extension on so that door way now takes you into the extension. This was originally the rear wall of the house so will be load bearing. I don't want to take out the architrave and find the bricks collapse.
Any tips on how to find out if you have a lintel or not and should I need one on the plasterboard wall?