Damp Proofing and Building Regulations

Typically, when you're installing a new Damp-Proof Course (DPC) – which is a barrier designed to stop moisture from rising through walls – or replacing an existing one, you usually won't need to get official permission from building regulations.

However, specific Building Regulations do apply when you're undertaking new constructions or adding extensions:

• For all brand-new structures and additions to existing properties, you must incorporate a DPC.

• When dealing with external walls, it's crucial that your DPC is positioned at least 150mm above the surrounding ground level.

You might also need additional building regulations consent if your damp proofing work involves certain modifications to your property:

• For instance, if it alters the structural integrity of your building.

• Or if it impacts the building's thermal performance – meaning how effectively it insulates.

If you're ever unsure whether your particular project requires approval, your best course of action is to contact your local council's building control department; they can offer expert guidance.