When a waterproofing material will be covered by tiles, installed on an exposed roof or built into a basement system, buyers need more than a sales claim. A SIRIM certificate can provide useful evidence, but only when it matches the exact product being proposed.

In this article, we explain what SIRIM certification means for waterproofing products in Malaysia, what buyers should verify, what certification does not guarantee and how it should influence the selection of a waterproofing manufacturer or supplier.

The direct answer is: SIRIM certification shows that a specific product has been assessed within a defined certification scope or against stated requirements. It does not automatically mean that every product from the same brand is certified, or that the product is suitable for every roof, bathroom, balcony, basement or exterior wall.

What SIRIM Certification Means for Waterproofing Products

SIRIM is widely recognised in Malaysia for testing, inspection and certification. Under its Product Certification Scheme, SIRIM QAS assesses products against specified standards or accepted requirements. Buyers can also use the official Malaysian Certified directory to search for certified organisations and products.

This gives contractors, developers, consultants and project purchasers a more objective basis for reviewing a material than brochures or verbal assurances alone. However, a compliant product may still be unsuitable for a particular substrate or exposure condition. The certificate should be reviewed together with the technical data sheet, project specification and application method.

The Certificate Must Match the Exact Product Being Supplied

One common purchasing mistake is assuming that “SIRIM certified” applies to a manufacturer’s entire product range. In practice, certification is issued within a defined scope. The product name, model or grade shown in the submission should match the relevant certificate.

This matters because waterproofing materials are not interchangeable. A cementitious slurry used beneath bathroom tiles performs a different role from an exposed roof coating, transparent wall coating, sealant or torch-applied membrane. If a quotation or material submission states that a product is SIRIM certified, ask for the document covering that exact product—not a general company certificate or one issued for another product.

Five Details Buyer Should Verify Before Approval 

A certificate becomes useful only when its details can be connected to the material arriving on site. Before approving a waterproofing product in Malaysia, check the following:

Product identity – Does the product name, model or grade match the quotation, packaging and technical data sheet?

Applicable standard – Does the document state the requirement against which the product was assessed?

Certificate number – Is there a clear reference number that can be checked with the issuing body or official directory?

Supporting documents –Are the technical data sheet, safety data sheet, application guideline and relevant test reports available?

Project compatibility – Does the proposed product suit the substrate, moisture condition, UV exposure, movement, traffic and final finish of the actual area?

This review is not paperwork for its own sake. A mismatch may only become visible after tiles are installed or the product has faced repeated heavy rain.

SIRIM-Certified and SIRIM-Tested Do Not Mean the Same Thing

These terms are not interchangeable. A test report records the results of particular samples tested using stated methods and conditions. Product certification confirms conformity within the scope of a certification scheme.

When a supplier makes a certification claim, request the certificate rather than accepting only a laboratory report. If a particular property matters—such as water permeability, adhesion or tensile strength—review the relevant test report and confirm that the method relates to the proposed application.

Manufacturer Capability Still Matters After Certification

After verifying the documents, buyers should assess the manufacturer’s technical capability. A reliable waterproofing manufacturer and supplier should explain where the product can be used, whether it is for exposed or concealed application, which primer or protective layer is required and what site conditions may affect adhesion or curing.

A roof exposed to direct sun and ponding water cannot be treated like a tiled bathroom. A basement subject to water pressure also requires a different approach from exterior wall seepage. The supplier should be able to connect the product documents with these practical site conditions.

As a waterproofing manufacturer, supplier and solutions provider in Malaysia, QingLong supplies coatings, membranes, cementitious waterproofing materials, sealants and construction repair products for different residential, commercial, industrial and infrastructure applications.

Our product and site experience helps the team look beyond the product name. The proposed system should reflect the substrate, moisture condition, exposure, building movement and intended use. When certification or testing is required, request the current documents that match the exact QingLong product proposed rather than assuming that one document covers the full range.

Conclusion

SIRIM certification gives buyers a stronger, more verifiable starting point when comparing waterproofing products in Malaysia. However, the value of the certificate depends on whether it is current, whether it matches the exact product being supplied and whether the product is suitable for the site. Long-term waterproofing performance still depends on correct system selection, surface preparation, detailing and workmanship.

Before approving a waterproofing material, verify the document, review the technical requirements and confirm the application method. If you are sourcing materials for a residential, commercial, industrial or infrastructure project, contact QingLong Waterproofing to discuss the product documents, project requirements, pricing and suitable waterproofing system.

Frequently Asked Questions (FAQs)

1. Does SIRIM certification mean a waterproofing product will not leak?

No. Certification confirms compliance within a defined scope. Preventing leaks also depends on correct diagnosis, product selection, substrate preparation, detailing and application.

2. How can I verify a SIRIM-certified waterproofing product?

Check the product name, certificate number, standard or scheme, manufacturer and current status. You can also search the official Malaysian Certified directory or ask the supplier for the latest certificate.

3. Can one SIRIM certificate cover all waterproofing products from the same manufacturer?

Not automatically. Certification applies according to the product and scope stated on the document. Always confirm that the certificate matches the exact product being purchased.

4. Is SIRIM certification compulsory for every waterproofing product in Malaysia?

Requirements can vary by product category, project specification, tender condition and relevant authority. Buyers should confirm the requirements for their project before ordering materials.

5. What if a waterproofing product has no SIRIM certification?

A product without SIRIM certification is not automatically unsuitable. It may be supported by recognised laboratory test reports, international standards or other technical documentation. However, buyers should verify its performance data, intended application and compatibility with the project requirements. For tenders, regulated works or high-risk projects, confirm the required certification with the consultant, client or relevant authority before purchasing.