The Greenstone Home Reference mark: a square quarry tile carrying the letters G R.

Greenstone Home Reference

Working notes on repairing, insulating and upgrading older masonry houses.

Heating & Ventilation

Two separate jobs that share the same rooms: getting heat where you want it, and moving moist air out before it condenses.

Section through a narrow three-storey house with arrows showing stack air movement upward through the stair and cross ventilation at each floor.
Stack movement up the stair core, and cross movement across each floor. A tall narrow house does the first well and the second badly.

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