---
title: "SZC - Waterproofing Materials"
ocid: "ocds-b5fd17-0f766914-0285-47c9-ba06-4bed14af78b0"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-b5fd17-0f766914-0285-47c9-ba06-4bed14af78b0"
markdown_url: "https://d3tenders.com/contract/ocds-b5fd17-0f766914-0285-47c9-ba06-4bed14af78b0.md"
json_url: "https://d3tenders.com/contract/ocds-b5fd17-0f766914-0285-47c9-ba06-4bed14af78b0.json"
source: "Contracts Finder"
current_stage: "Tender"
buyer: "SIZEWELL C LIMITED"
published: "2026-04-14"
---

# SZC - Waterproofing Materials

Buyer: SIZEWELL C LIMITED  
Current stage: Tender  
OCID: ocds-b5fd17-0f766914-0285-47c9-ba06-4bed14af78b0

[View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-b5fd17-0f766914-0285-47c9-ba06-4bed14af78b0)  
[Download OCDS JSON](https://d3tenders.com/contract/ocds-b5fd17-0f766914-0285-47c9-ba06-4bed14af78b0.json)

## Summary

Sizewell C Limited has initiated a procurement process for "SZC - Waterproofing Materials." This tender invites companies involved in waterproofing work, classified under industry code CPV 45261420, to supply bonded and unbonded membranes, waterbars, sealants, and related accessories required for a comprehensive waterproofing system. The project is set to deliver materials across various territories, including the United Kingdom, Europe, and other global locations. The tender is currently in the active stage, with a closing deadline for submissions on 23rd April 2026 at 17:30 BST. The contract period is scheduled to commence on 3rd November 2026 and conclude by 2nd December 2027. Interested parties should note the procurement requires specialised goods with an estimated value of £5,000,000 GBP.

For businesses specialising in construction goods, particularly waterproofing products, this tender presents a significant opportunity for growth and expansion into international markets. With a focus on supplying a vast array of waterproofing solutions, companies can leverage their expertise and resources to meet the contract's technical and geographical demands. Small and medium enterprises are also encouraged to bid, as their suitability has been highlighted, although voluntary and community sector enterprises may not be compatible with this tender. The opportunity is ideal for those who can efficiently manage the supply chain logistics required to meet the specifications and delivery timeline outlined by Sizewell C Limited.

## Notice

The waterproofing package includes the supply of all materials, namely bonded and unbonded membranes, waterbar materials and accessories, which are assembled and installed to form a specific waterproofing system to meet the design requirements. Dependent on the waterproofing system used, the waterproofing materials can be cast into the concrete when poured or applied post pour. The system design is installed to prevent the ingress of water into. The requirement includes 120,000 m2 bonded membrane, 45,000 m2 unbonded membrane, 30,000 l/m joint waterbars, 4,500 l/m hydrophilic waterbars, 15,800 l/m elastomer waterbars, 36,540 l/m PVC waterbars as well as related accessories such as 22,000 units of sealants and adhesives and compressible materials to suit seismic design.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Contracts Finder |
| Latest notice | https://www.contractsfinder.service.gov.uk/Notice/033a6847-82a6-4030-9ad0-3eadc2586851 |
| Notice type | Tender Notice |
| Procurement type | Standard |
| Procurement category | Goods |
| Procurement method | Not Specified |
| Procurement method details | Not specified |
| Tender suitability | SME |
| Awardee scale | Not specified |
| All stages | Tender |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 14 Apr 2026 |
| Submission deadline | 23 Apr 2026 |
| Future notice date | Not specified |
| Award date | Not specified |
| Contract period | 3 Nov 2026 - 2 Dec 2027 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £5,000,000 |
| Lots value | Not specified |
| Awards value | Not specified |
| Contracts value | Not specified |

## Status

| Field | Value |
| --- | --- |
| Tender status | Active |
| Lots status | Not specified |
| Awards status | Not specified |
| Contracts status | Not specified |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | SIZEWELL C LIMITED |
| Locality | LONDON |
| Post town | West London |
| Postcode | W1T 4EZ |
| Country | England |
| ITL 1 | TLI London |
| ITL 2 | TLI3 Inner London - West |
| ITL 3 | TLI36 Camden |
| Local authority | Camden |
| Electoral ward | Bloomsbury |
| Westminster constituency | Holborn and St Pancras |
| Delivery location | Not specified |

## CPV Codes

### Divisions

- 45 - Construction work

### Codes

- 45261420 - Waterproofing work

## Release History

- 14 Apr 2026 at 16:10 - Tender - Tender Notice - https://www.contractsfinder.service.gov.uk/Notice/033a6847-82a6-4030-9ad0-3eadc2586851

## Documents

- https://www.contractsfinder.service.gov.uk/Notice/033a6847-82a6-4030-9ad0-3eadc2586851
  14th April 2026 - Opportunity notice on Contracts Finder
- https://www.competefor.com/business/viewOpportunityDetailsSupplier.html?id=110888233
  Please follow this link to view the notice.

## Provenance

This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-b5fd17-0f766914-0285-47c9-ba06-4bed14af78b0. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-b5fd17-0f766914-0285-47c9-ba06-4bed14af78b0.json.