- BENG Bijna Energie Neutraal Gebouw (Near-Energy-Neutral Building)
- Dutch building regulation since 2021. A new or renewed roof must meet BENG insulation standards, typically 120 mm PIR insulation. At roof renewal we combine standard with BENG-compliant insulation.
- ISDE Investeringssubsidie Duurzame Energie (Sustainable Energy Investment Subsidy)
- Subsidy via the Dutch RVO on roof insulation. Refunds €30-40 per m². The application must be filed by you with RVO.
- VCA Safety, Health and Environment Checklist for Contractors
- Construction safety standard. VCA-certified roofers work to documented safety protocols — required by commercial and residents'-association clients.
- EPDM Ethylene Propylene Diene Monomer rubber
- Synthetic rubber for flat roofs — seamless, very durable (30+ years lifespan). We use EPDM for smaller flat surfaces like dormers, garden rooms and garages.
- APP / SBS Atactic Polypropylene / Styrene-Butadiene-Styrene
- Two polymer additives that reinforce bitumen. APP is heat-resistant (for sun-exposed flat roofs), SBS is more flexible in cold (for shaded roofs). Both carry up to 15 years manufacturer warranty from Iko or Esha.
- MJOP Meerjaren Onderhoudsplan (Long-Term Maintenance Plan)
- Legally required for Dutch residents' associations (VvE's). A 10-15 year plan with urgency ratings per maintenance category. We provide inspection reports with direct MJOP input for the roof components.
- VvE Vereniging van Eigenaren (Owners' Association)
- Legal Dutch organisation of owners in an apartment complex. We regularly work for residents' associations — with written reporting, MJOP input and project-based scheduling for multiple homes at once.
- NedZink / VMZINC Premium zinc manufacturers
- Two Dutch/European zinc manufacturers for roof gutters, valley gutters and zinc details. We are a certified Zinkunie installer and use heavy-gauge premium zinc for projects where lifespan (25+ years) and salt resistance (coastal towns) matter.