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Does Indonesia Have a Wet-Area Waterproofing Standard?

SNI 8153 governs Indonesia's building plumbing systems, but no confirmed national clause sets a dedicated bathroom-membrane requirement — wet-area waterproofing here is contractor and product-driven, not code-driven.

SNI 8153:2025 Clause ID SNI 8153

The requirement

No. There is no confirmed national rule for wet room membranes in Indonesia. SNI 8153, the national plumbing standard, covers pipes and drains, not membranes. Permen PU 29/2006, the general building rule, is silent too. On site, your guide is the membrane maker’s data sheet, not a code.

This is the thinnest page in this cluster. It stays that way on purpose. We will not invent a clause to fill the gap.

SNI 8153 is the closest standard, and it is about plumbing. SNI 8153:2025 (Sistem plumbing pada bangunan gedung, Building plumbing systems) comes from BSN (Badan Standardisasi Nasional). It replaces the 2015 edition. It sets out how a building’s water supply and drains should work. Showers, basins and toilets all sit inside that system. But our search found no clause in it that asks for a membrane under tiles. Nothing for a shower wall or the floor to wall joint either.

One caution here. A clause could still sit in the full text. SNI texts are sold through BSN’s own store, not published free. That limits how far an outside search can check. So the honest read is “not confirmed”, not “no such rule exists”.

Permen PU 29/2006 is silent here too. That is the ministry rule that sets the general technical needs for buildings. It is the same rule that leaves ceiling height and vent figures to local bylaws and SNI standards. It has no wet room membrane clause either. There is no NCC-style “waterproof the shower to 1800 mm” line in any text we checked for this page.

Why we’re not printing a waterproofing figure

Other countries in this cluster have a real number to report. A set height, a class band, a fixed clause. Indonesia has no confirmed match on this topic. We could borrow a figure from a membrane data sheet. Or from a nearby country’s code. But that would dress up a gap as a code minimum. It is not one, so this page prints none.

In practice, the trade and the product set the rules, not the code. In home building, the tiler or the wet seal contractor picks the membrane system. The product instructions set how high it runs up the wall. Both cementitious coatings and bitumen-based membranes are common here. Rooms do get sealed well this way, and that is fine. But it is not a code minimum you can cite against a builder who skips it.

On site — what this means for you

  1. Don’t quote a code number for wet room sealing in Indonesia. There is no confirmed number to quote. If a client or tiler asks what the code requires, be straight with them. Say no national clause was confirmed for this page.
  2. Follow the membrane maker’s instructions. Coverage, coats, cure time and the height up the shower wall all come from the data sheet. They do not come from a regulation. Treat that sheet as your compliance paper on site.
  3. Check the plumbing design against SNI 8153. Water supply and drains in a wet room are covered by that national standard. The membrane itself is not.
  4. Ask locally if you need to be sure. Try the local Dinas PUPR (Public Works office). Or an architect registered in Indonesia. Or a full copy of SNI 8153 from BSN. Each can confirm what a general search could not surface.

Sources

  • SNI 8153:2025 (Sistem plumbing pada bangunan gedung), Badan Standardisasi Nasional (BSN) — the national building-plumbing standard; no dedicated wet-area waterproofing-membrane clause confirmed within it for this page. Catalogue at bsn.go.id / pesta.bsn.go.id.
  • Permen PU No. 29/PRT/M/2006 (Pedoman Persyaratan Teknis Bangunan Gedung) — the general building-technical regulation; also checked, also silent on wet-area waterproofing specifically. Read it at peraturan.bpk.go.id.

Read this first. This page reports a genuine gap in what could be confirmed, not a settled “no rule exists” finding. SNI standards are sold by BSN rather than published free in full text, which limits an outside search — a dedicated clause may exist in SNI 8153 or another SNI standard that this page’s research didn’t surface. If you need certainty for a real job, confirm directly with BSN, a local Dinas PUPR, or an Indonesia- registered architect before treating “no code requirement” as the final word.

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