Chestnut Plank Flooring Restoration – Ministry of Justice

San Bernardo building · Central Madrid · Chestnut plank floor over a historic floor structure

Restored chestnut plank floor at the Ministry of Justice on Calle San Bernardo, Madrid

Work performed

Full restoration of the chestnut plank floor at the Ministry of Justice. The historic building is on Calle San Bernardo in Madrid.

Characteristics of the base

The floorboards rest on timber battens over an old floor structure. Iberian chestnut gives good dimensional stability through Madrid’s humidity swings.

Technical intervention and finish

We fastened the boards to the battens with concealed fixings. Sanding with cyclonic dust extraction removed the dark varnish while taking off as little wood as possible. We applied an isolating, tannin-blocking primer and three coats of heavy-duty 2K waterborne varnish with a reaction-to-fire classification from the manufacturer.

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