Question 1

What insulation is used?

Accepted Answer

ZTC uses mineral wool, cellulose insulation and wood fibre insulation. The company operates an industrial Isofloc system for blowing cellulose and wood fibre insulation.

Question 2

How are panels connected?

Accepted Answer

Panels are connected with long screws or special timber connectors. A wind barrier is used externally and a vapour control layer internally, with membranes carefully taped across the building.

Question 3

What about sound in timber houses?

Accepted Answer

Airborne sound performance in timber houses can be very good. Impact sound in intermediate floors is addressed with appropriate floor and ceiling solutions.

Question 4

What is the difference between CLT and timber frame?

Accepted Answer

For houses up to around 3 storeys, timber frame is often more economical. CLT may suit load-bearing structures, hybrid solutions or exposed solid timber walls.

Question 5

How long does it take ZTC to build a house?

Accepted Answer

After project approval and contract signing, production can usually be scheduled within 1–3 months. Manufacturing requires at least around 2 weeks. On-site construction depends on the scope of work — an externally finished house is typically completed within 1–2 months. Overall, a house assembled on site is often ready in approximately 4–6 months.

Question 6

Does ZTC prepare architectural drawings?

Accepted Answer

ZTC does not prepare architectural plans. We work from a project prepared by the client or architect and provide engineering/structural design, manufacturing and assembly.

Question 7

Can we visit a completed house?

Accepted Answer

ZTC mainly builds individual projects and respects owners’ privacy. When a project is under construction, a site visit may be arranged. You are always welcome to visit the ZTC factory.

Question 8

What is the warranty period for ZTC houses?

Accepted Answer

Houses are designed for a service life of at least 50 years. The standard structural warranty is 3 years. In some cases an extension to 5 years may be considered where supported by material suppliers.

Hundegger CNC production for timber structures

ZTC experience and production facts

Why factory precision matters on site

Factory and CNC parameters

CNC precision

Factory

Capacity

Assembly

What precise production delivers

Fewer corrections

Predictable assembly

Quality control

Export projects

Precision Meets Recognition: Building for an Architect

Commitment & Trust – Building Homes Through Challenges

Industrial Facility Facade with CLT and Infill Panels

Residential Complex

Modern Coastal House with Curved Timber Structures

Sustainable Engineering: The CLT & SiOO:X Home

Frequently asked questions

Would you like to discuss production capacity?