Timber Structural Engineering & Mass Timber

Design, calculation and optimisation for Passivhaus and high-performance projects

We develop efficient, safe and industrialisable timber structures, integrating advanced structural calculations, building physics and Passivhaus criteria.

  • CLT, GLT and LVL

  • Lightweight lattice

  • Hybrid systems

  • CTE and Eurocode 5

  • PHPP integration and hygrothermal analysis

Request
technical advice

Consultancy

What is included in our
structural timber engineering

  • Structural calculation and dimensioning

    • Complete calculation according to CTE and Eurocode 5

    • Limit state verification (ELU / ELS)

    • Verification and justification by fire

    • Joint design and verification

    • Wind and seismic actions

  • Technical modelling and optimisation

    • 3D structural modeling (Cadwork / Timbertech)

    • Generation of manufacturing drawings

    • Optimisation of sections and meetings

    • BIM coordination with architecture and facilities

    • Design for industrialisation and prefabrication

  • wood engineering

     Passivhaus integration and hygrothermal control

    • PHPP analysis by structural typology

    • Calculation of structural thermal bridges

    • Hygrothermal simulation (WUFI)

    • Continuity of sealing design

    • Compatibility with Passivhaus and EnerPHit standards

Benefits

Benefits of the wood engineering

Zepassiv wood engineering

  • Advanced structural calculation

  • Mass Timber and structural systems

  • Passivhaus integration

  • Industrialisation

  • Expert technical team with +20 years of experience

    • Tell us
    your project

Work

Who we
work with

  • Architectural studios

  • Engineering

  • Technical promoters and self-promoters

  • CLT and Lightweight Framing Manufacturers

  • Specialist timber construction companies

We

Our
process

Request
technical consultancy

  • Preliminary analysis and risks

  • 3D structural modelling

  • Complete structural calculation

  • Technical optimisation

  • Coordination with manufacturer

  • On-site support

Request
technical consultancy

Why

Why choose
Zepassiv?

  • International experience in Passivhaus projects and high efficiency buildings

    More than two decades working in Spain, UK and Portugal, with residential, public and private projects.

  • Specialists in Mass Timber and Lightweight Framing

    Multidisciplinary team proficient in PHPP, WUFI, Flixo/THERM, TM59, comfort analysis and building physics.

  • Fully collaborative approach

    We work closely with architects, engineering and construction companies, facilitating technical decisions at all stages of the project.

  • Risk reduction by design

    We identify thermal bridges, damp, overheating and construction problems before they appear on site.

  • Cost and performance optimisation

    We propose viable, efficient solutions aligned with energy objectives, regulations and certification (Passivhaus, EnerPHit, AECB, Net Zero).

  • Trilingual service (ES / EN / PT)

    We facilitate communication in international teams or cross-border projects.

Portfolio

Some of our
recent projects

Find out how to Zepassiv accompanies professionals on the
development of sustainable projects and Passivhaus certificates.

Accredited vocational training to transform the sector.

As certified consultants and trainers, we believe that training is key to driving real change. Our programmes help professionals to successfully apply Passivhaus principles in their projects.

Discover our training

Testimonials

What they say
OUR CLIENTS

  • Jesús Menéndez is a wonderful person and a superb professional with extensive knowledge of the wood industry. He is also an excellent teacher of both structural engineering and energy efficiency. He runs a top-tier consulting firm specializing in the wood sector.

    Client

    Spain
  • Read more testimonials

FAQs

Frequent
questions

Do you offer on-site supervision?

Yes, we provide technical support throughout the project.

Do you work with manufacturers?

Yes, we liaise directly with manufacturers.

Can you integrate the building structure and the PHPP?

Yes, we work on both the structure and energy efficiency at the same time.

Do you carry out full structural calculations?

Yes, in accordance with CTE and Eurocode 5.