Why natural materials?

Traditional Buildings

The term ‘traditional building’ describes buildings which were constructed before about 1900 with solid walls, shallow foundations and before 1875 with no damp proof course. The soft lime mortar and plaster gave the buildings flexibility to move on their shallow foundations without causing permanent cracking. The use of stone, soft bricks, clay and timber with permeable lime mortar and limewash allows the buildings to ‘breathe’ and thus avoid damp problems.

Repairing an old building using modern materials creates problems, in particular re-pointing or rendering with cement and trying to keep out damp with waterproof coatings. Traditional lime mortars and plasters preserve breathability and flexibility. They prevent frost, water and salt damage to masonry, damp in plasterwork and floors and rot in timbers.

Repairs and decoration using traditional, natural materials also look better and are more in keeping with the traditional appearance. The finishes have soft variations and the colours a natural subtlety that cannot be achieved artificially.

New Build

Lime is also making a comeback for new build ranging from prestigious projects, such as the new headquarters for the RSPB to starter homes for Housing Associations . It should not be overlooked that it was used for virtually all new-build until a hundred years ago. Lime has many advantages for new build including environmental, avoiding unsightly expansion joints and producing a healthier living environment.