Edit if you have to lift the door to open it you probably need to adjust the hinges.
French doors swelling in heat.
Moisture in the air is absorbed by the wood in some doors.
Some doors stick even in dry winter weather of course so a balky door can be a year round problem.
This is likely to be because the upvc has swollen.
Humid summer weather sometimes brings an irritating byproduct sticking doors.
Because heat causes the wood to expand against its frame avoid placing heaters less than 36 inches from a door.
The doorlandia website explains that warps and swelling can occur because of a heat source too close to the door or because of poor ventilation.
French doors ease of access makes up for the amount of space they need to open.
When it is cold outside the door gets slightly smaller and has small gaps around the door seal.
When it is hot outside the door gets slightly larger and is difficult to open and close.
A quick fix to get it locked use hose pipe or bucket of water and spay or throw bucket of water on door to cool down then should be able to lock it you will need door adjusting to fix this prob as it will happen every time its hot hope this helps.
My upvc exterior door appears to have swollen in the present hot weather and i now have difficulty getting the locks to engage.
But by august heat has driven moisture deep into the grain and the once yielding door has become swollen and stuck.
This old house general contractor tom silva confronts a stubborn summertime door with a jack plane and a little restraint.
In extreme heat you may have noticed your windows or doors becoming stiff or not opening or closing properly.
It s probably moisture not the heat causing your doors to stick.
I have to leave the door until late evening when it is cooler before being able to lock it.
The wood swells and the doors become difficult to open and close.
A shrinking or swelling door most likely will be difficult to open when it swells and when shrunk will let the cold exterior air into your home.
French doors typically use weather stripping at the floor level where the doors meet to prevent water ingress.
Your windows and doors are not are not broken and do not need replacing.
Pulled tight in winter it s a stalwart guardian against chills and drafts.
If the doors are hung properly use a level to check the jamb and you just want a simple solution you might be able to get away with shaving a little off the side of the door that sticks.
Has anyone else suffered this problem and is there anything i can do.