I made some panelling in our bathroom a few years ago out of water resistant MDF. Stupidly, i didn't glue the join and just screwed two sections to a fish plate piece of MDF behind them.
I now find that that the join expands and contracts depending on the time of year. In the summer, when the heating is not on, it closes up to virtually nothing. In the winter, when the heating is on, the crack opens up to a mm or so wide.
I want to fill and paint the but need to deal with the expansion/contraction issue at the same time.
Can anyone suggest how to deal with it? Wood filler will not bond the crack and will only crack again. I'm also worried that cauk will be squeezed out when the MDf expands in the summer.
All advice appreciated
Photo below
I now find that that the join expands and contracts depending on the time of year. In the summer, when the heating is not on, it closes up to virtually nothing. In the winter, when the heating is on, the crack opens up to a mm or so wide.
I want to fill and paint the but need to deal with the expansion/contraction issue at the same time.
Can anyone suggest how to deal with it? Wood filler will not bond the crack and will only crack again. I'm also worried that cauk will be squeezed out when the MDf expands in the summer.
All advice appreciated
Photo below