The doors we see in everyday houses are usually designed specifically to exclude draughts, with sophisticated and long-lasting designs intended to prevent airflow and heat loss. However, on older doors, especially the kinds of doors you would see in preserved buildings, there are often gaps through which air can travel. As well as that, normal wear and tear on a centuries-old door, combined with rot, shrinkage, swelling and decay in the wood, will often make it necessary to repair older doors and replace the damaged parts.
We have a great deal of experience in dealing with these older designs and maintaining their architectural and aesthetic beauty while bringing them up to modern standards of energy efficiency.