Green roofs are growing in popularity across Ireland for their insulation, biodiversity, and stormwater benefits. Here’s what to know before you build.
What Is a Green Roof?
A layered roofing system that supports vegetation over a waterproofing and root‑resistant membrane.
- Extensive: lightweight (sedum/moss), low maintenance
- Intensive: deeper soil, supports shrubs/small trees, higher maintenance
Key Benefits
- Thermal and acoustic insulation
- Stormwater retention and reduced runoff
- Longer membrane life by shielding UV and heat
- Urban biodiversity and visual appeal
Costs in Ireland (Indicative)
- Extensive: €90–€160/m² depending on build-up and access
- Intensive: €160–€300+/m² depending on depth and planting
Build-Up Essentials
- Root‑resistant waterproof membrane
- Protection fleece and drainage layer
- Filter layer, growing medium, vegetation blanket
Tip: Start with a detailed roof inspection to verify structure and drainage.
Planning & Regulations
- Many projects permitted, but check local council guidance
- Consider wind uplift zones and fall protection
Maintenance
- Seasonal weeding, irrigation checks in dry spells
- Annual inspection of outlets and drainage
Thinking green? Talk to our new roofs team for a compliant build-up and warranty.
Tags:
green roofsustainable roofingbiodiversityinsulationplanning
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