Journal

Before you choose a surface

Six better questions about emissions, finishes, moisture, cleaning and repairability.

A craftsperson sands a piece of timber by hand

“Natural” is a label, not a material specification. A healthier choice depends on what a product contains, how it is finished, where it is used and what happens over time.

Ask for the layer you cannot see

The visible surface is only one part of an assembly. Adhesives, sealers, substrates, grouts and maintenance products can matter as much as the top layer. Ask for the product data and emissions documentation for the whole system.

A low-emitting material is not automatically suited to a wet area, a food-preparation surface or a high-wear floor. Consider health, durability and ease of cleaning together.

A hand opens a timber-framed window above a textured stone sill

Design for the next ten years

Can a damaged area be repaired without replacing the whole surface? Can junctions dry after a leak? Will the cleaning method require harsh products every week? Longevity is not an abstract sustainability claim; it is an everyday property.

Six questions to carry

What is the complete assembly? Is there credible emissions information? What happens when it gets wet? How is it cleaned? Can it be repaired? Where does it go at end of life? If a supplier cannot answer, that uncertainty belongs in the decision.

Sources and boundaries

Read the evidence behind the guide.

U.S. EPA · Volatile organic compounds indoors · 2026WHO · Indoor air quality: dampness and mould · 2009