Technical Guidance

Question:

Is it necessary to soundproof sections of SVP’s which do not pass through adjoining rooms or floor voids?

Considerations:

• NHBC Standards clause 8.1 – S8(c) states ‘insulation should be provided to all soil pipes passing through dwellings’.

Answer:

All sections of an SVP including those which do not pass through other rooms e.g. ground floor stub stacks and SVP’s in bungalows,
should be fully soundproofed in accordance with the details shown in NHBC Standards clause 8.1 – S8 (c), unless they have a third
party assessment to indicate the pipe meets with building regulations and NHBC requirements.