Are eco-building products more expensive than the regular products from builders merchants?
This is a tricky question to answer, and of course there is always the added dimension that many conventional products are, in effect, not paying their way — what you pay does not cover the cost of their impact on the environment. Eco products can cost more, but sometimes their inherent qualities can be harnessed to keep costs down. More thermally efficient components for example, will in the long run save energy and money. Similarly with low water use appliances. Another example might be solid timber floorboards, finished with oils and waxes, instead of chipboard floors finished with good quality conventional carpets.