Old box sash windows are usually far too good a piece of craftsmanship to replace, but in winter the draught comes through every joint. At this property in Berlin-Zehlendorf we retrofitted seals to around 15 window sashes: a groove is routed into the rebate of each sash with a router, and a silicone tubular seal […]
Tag: Wood & building preservation
Crumbling clinker brick step rebuilt
On this outdoor staircase one step had crumbled away completely: the clinker bricks were lying loose and the mortar beneath had turned to soil. At this property in Berlin-Zehlendorf we took the step apart entirely, cleaned the old bricks of mortar and cleaned the base down to the solid core. So that the new mortar […]
Box windows reglazed – three examples in 4 mm float glass
In old box sash windows the original panes are often only 2–3 mm thin, and at some point the first one cracks. At this property in Berlin-Zehlendorf we replaced several cracked panes: removed the old remains, cleaned the rebates of old putty and fitted new panes of 4 mm float glass, puttied and neatly struck […]




