NATCEM 35 Approved for use at ZERO Degrees
Date published:
June 28, 2024
Working in freezing conditions can be challenging for Civil Engineering projects, as many cement-based products are ineffective below 5°C. Natural Cement is pleased to announce that our NATCEM 35 is now approved for use in Public Water Supplies at temperatures as low as 0°C!

Based in Barnsley, South Yorkshire, Natural Cement manufactures eco-friendly mortars, grouts, and shotcretes using a Natural Cement binder in use for over 200 years. Our products are ideal for Concrete Repairs, Waterproofing, Grouting, Screeding, and Sprayed Concrete across Construction, Water & Utilities, Rail, Civil Engineering, Tunnelling, and Sea Defence & Coastal markets.
NATCEM 35 is an eco-friendly, fast-setting mortar with rapid strength gain, ideal for potable water applications in cold weather. It joins NATCEM AC, WATERSTOP, and NATCEM D in being approved under Regulation 31 of the Water Supply Regulations for use from 0°C, reducing winter project delays.
Construction products used from the water source to delivery in a consumer building must be approved under Regulation 31 of The Water Supply Regulations (Regulation 33 in Scotland and Ireland).
Natural Cement supply Environmentally Friendly mortars, grouts and shotcrete products which are DWI.reg 31 approved. For more information on the range or to organise a product training session please call our technical team on 01226 381133 or email enquiries@naturalcement.co.uk.
More from the water sector
Find out how the UK water sector is informing, innovating, and influencing change
Future Water Awards 2026 – Nominations now open
Celebrate excellence in the UK water sector by nominating outstanding individuals and organisations for the 2026 Future Water Awards, recognising emerging talent, people, and above-and-beyond contributions.
New UK testing facilities could speed up implementation of water innovation as Ofwat awards funding to Regulation 31 challenge finalists
Eight finalists to receive £50,000 each from Ofwat’s Water Innovation Implementation Programme to explore expansion of UK-based Regulation 31 testing capabilities
Ofwat awards 8 finalists £50,000 each to expand UK Regulation 31 drinking water testing capacity, tackling a key bottleneck to sector innovation.
Why the Best Water Solutions Start With the Right Partnerships
The water sector has always relied on collaboration - between utilities, contractors, manufacturers and regulators. But AMP8 is raising the stakes. With record investment, tightening efficiency targets and pressure to deliver at pace, the relationships that underpin delivery matter more than ever.
Show moreFinalist at Water Industry Awards: how our LoFlo partnership with Severn Trent shows what real supplier-utility collaboration delivers in AMP8.
