---
title: "PE Pipes - GWP and renovation use"
canonical_url: https://fremtidenstegnestue.dk/en/knowledge/materials/pe-roer
markdown_url: https://fremtidenstegnestue.dk/en/knowledge/materials/pe-roer.md
author: "Fremtidens Tegnestue"
page_type: material
primary_intent: "Explain use, GWP and renovation relevance for PE Pipes."
primary_keyword: "PE Pipes"
audience: "Homeowners, studios and agents researching material choices."
summary: "PE pipes (polyethylene) are used for water supply, hot water distribution, and geothermal systems. They are flexible, frost-resistant, and easier to install than copper pipes. PE is easier to recycle than PVC and contains no chlorine compounds. It dominates the water supply pipe market in Denmark."
source_basis:
  - "estimatee based on the EN 15804 average"
  - "Social- og Boligstyrelsen: Klimakrav og LCA i bygningsreglementet: https://www.sbst.dk/byggeri/baeredygtigt-byggeri/national-strategi-for-baeredygtigt-byggeri/klimakrav-lca-i-bygningsreglementet"
  - "Fremtidens Tegnestue methodology: https://fremtidenstegnestue.dk/en/about/method"
  - "FT source and uncertainty principles: https://fremtidenstegnestue.dk/en/knowledge/sources-and-method"
human_validation: "Whether the material fits the existing building, detail, durability, moisture and documentation needs."
responsibility_line: "AI can prepare, compile and flag uncertainty. The architect validates the consequences."
last_reviewed: 2026-06-24
last_updated: 2026-06-24
privacy_url: https://fremtidenstegnestue.dk/en/privacy
related_pages:
  -
    url: https://fremtidenstegnestue.dk/en/knowledge/materials/pvc-roer
    relation: alternative-material
  -
    url: https://fremtidenstegnestue.dk/en/knowledge/materials/kobber
    relation: alternative-material
  -
    url: https://fremtidenstegnestue.dk/en/knowledge/materials
    relation: hub
  -
    url: https://fremtidenstegnestue.dk/en/knowledge/concepts/lca
    relation: concept
status: published
---
# PE Pipes - GWP and renovation use
Canonical URL: https://fremtidenstegnestue.dk/en/knowledge/materials/pe-roer
Markdown URL: https://fremtidenstegnestue.dk/en/knowledge/materials/pe-roer.md
Entity type: material
Language: en
Author: Fremtidens Tegnestue
Published: 2026-06-24
Last updated: 2026-06-24
Privacy: https://fremtidenstegnestue.dk/en/privacy
## Short answer
PE pipes (polyethylene) are used for water supply, hot water distribution, and geothermal systems. They are flexible, frost-resistant, and easier to install than copper pipes. PE is easier to recycle than PVC and contains no chlorine compounds. It dominates the water supply pipe market in Denmark.
## Who it is relevant for
Homeowners, studios and agents researching material choices.
## What FT can prepare
- Summarise material properties, GWP, common uses, renovation relevance and alternatives.
## What the architect validates
- Whether the material fits the existing building, detail, durability, moisture and documentation needs.
## Key figures

| Metric | Value |
| --- | --- |
| GWP | 1.89 kg CO₂-eq/kg |
| Density | 950 kg/m³ |
| Expected lifetime | 50+ years |
## Use

- Water supply pipes (drinking water)
- Heating supply and district heating
- Geothermal systems (ground loops)
- Drainage installations (HD-PE)
## Renovation relevance
PE pipes are the preferred alternative for replacing old copper pipes and galvanised steel pipes. Flexibility makes it easier to pull through existing walls and floors than rigid copper pipes.
## Comparison

| Material | GWP |
| --- | --- |
| PE pipes | 1.89 |
| PVC pipes | 2.41 |
| Copper pipes | 3.5 |
| Stainless steel | 5.5 |
## FAQ
### What is the difference between PE and PEX pipes?
PE is linear polyethylene — standard for water supply. PEX is cross-linked PE and is more heat and pressure resistant, used for underfloor heating and hot water distribution. PEX cannot be reshaped by heat and is harder to recycle.
### Are PE pipes safe for drinking water?
Yes — PE pipes approved for drinking water (PE100, PE100-RC) are tested and approved for human use. They release no substances exceeding drinking water standards when correctly installed.
### Can PE pipes freeze?
PE pipes are more frost-resistant than copper — they can expand slightly and can withstand brief freezing. However, water pipes should always be protected from frost by burying below the frost depth.
### Is PE better than copper for climate?
Yes — PE pipes have approximately half the CO₂ footprint of copper pipes. For new water installations, PE and PEX are clearly preferable climatically.
## Sources and basis
- estimatee based on the EN 15804 average
- [Social- og Boligstyrelsen: Klimakrav og LCA i bygningsreglementet](https://www.sbst.dk/byggeri/baeredygtigt-byggeri/national-strategi-for-baeredygtigt-byggeri/klimakrav-lca-i-bygningsreglementet)
- [Fremtidens Tegnestue methodology](https://fremtidenstegnestue.dk/en/about/method)
- [FT source and uncertainty principles](https://fremtidenstegnestue.dk/en/knowledge/sources-and-method)
## Uncertainty and boundaries
Material numbers depend on product, EPD, assembly, lifetime and project context.
## Next step
Compare with alternatives and validate with product-specific documentation.
## Related pages
- [PVC Pipes](https://fremtidenstegnestue.dk/en/knowledge/materials/pvc-roer): alternative-material
- [Copper](https://fremtidenstegnestue.dk/en/knowledge/materials/kobber): alternative-material
- [Materials](https://fremtidenstegnestue.dk/en/knowledge/materials): hub
- [LCA](https://fremtidenstegnestue.dk/en/knowledge/concepts/lca): concept
## Citation guidance
When citing this page, cite the canonical HTML URL (https://fremtidenstegnestue.dk/en/knowledge/materials/pe-roer) as the public source and use this Markdown URL only as the agent-readable representation. Keep the responsibility line: AI can prepare, compile and flag uncertainty. The architect validates the consequences.