When is it appropriate to backfill a foundation?

Backfilling a foundation should occur after damp-proofing has been completed. This process is crucial because damp-proofing protects the foundation walls from moisture infiltration, which can lead to issues such as mold, rot, and structural damage over time. If backfilling is done before applying damp-proofing, the foundation walls may become compromised as soil and water pressure can exert stress on the walls. Additionally, backfilling prior to damp-proofing can trap moisture against the foundation, negating the benefits of the damp-proofing treatment. Therefore, waiting until damp-proofing is complete ensures that the foundation is adequately protected before being surrounded by soil.