Breathable building envelope

breathing
air tight
sick
cost
toxins
natural
longeviety
thermal storage quality
effective insullating quality
fire safety
reduce moisture
resistance to mould and mildew
non toxic
non outgassing
thermal mass
lighting
colour
acousting dampening
balance of -ve and +ve ions
avoid building in static electricty
Geomagnetism
Electric
ergonomics
renewable
slab
foundation
walls
roof
water
moulds
preferred materials
desireable propereties
Vapour permeablilty diffusion
Hygroscopicity adsorption / desorption
Capillarity absorption / desorption
Thermal mass
outsulation
radiant heat transfer
structural integrity
stable energy
hygrothermal
mould formation
vapour from high concentration to low concentration
1 perm passage of 1 grain of water/sqf/hour under pressure 1″Hg
pore structure diffusion rate
air flow is different from water vapour movement
air change
rain
condensation
ACH air change per hour
mould colinies establishmnet
VOC volitile organic compounds
equilibrium moisture content EMC
high EMC high adsorption capacity.
Lime plaster Logs
Penetretion
depth
thickness
density
EMC
position of material in house
capillary absorption


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