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  • Similar problem at a previous house: I resorted to battens shaped on one side to the profile of the wall using a spoke shave - doubtless there is a more modern power tool that will do the job, but shavings are much easier to clear up than dust. Said battens varied from 1/4" to 1. 1/4" thick, and allowed a ply panel to be fitted true, or at least as close enough, screwing through the ply and batten into the wall.
    The biggest problem I found was drilling into Victorian brick - carbide masonry drills were good for no more than two holes...

  • Screwed the battens to the wall - packed with wedges / scrap to give vertical - marked a constant distance from the wall to give a guideline - remove screws and cut to line.

    wall contour


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