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Knowledge base

We share our knowledge to help customers navigate the choices that have to be made when building a house and provide answers to frequently asked questions.

Frequently asked questions

Modular or volumetric element house construction is one of the prefabricated construction systems that produces volumetric parts of the house (modules) in the factory and ships them to the building site. ZTC produces buildings in panelized system which means that the building is prefabricated in wall, roof, floor elements that are delivered and assembled on site. Each timber frame house construction system has its pros and cons.

The building set is produced in Latvia and delivered to the construction site via road transport (and ship where necessary). As a rule of thumb a building kit for an outside finished house may require a truck for about every 30-40 m2 of floor. However this can vary a lot depending on how high thermal resistance requirements are for the building, type of siding, the complexity of architecture and other factors.

Find out more about prefab house delivery.

A standard scope of a project from ZTC includes:

  • Panelized building elements, siding and sheathing materials
  • Thermal insulation and other insulation materials
  • Roofing
  • Rain gutters and downpipes, external windowsills
  • Wooden windows and doors
  • Delivery
  • Installation

These are tailored to customer’s needs and interior finishing can be provided in some cases.

Production of a house includes development of production and installation designs which takes about 2 months for a single family house. When the design is finished it takes about a month to produce. The delivered building set is installed and finished from outside within a month. The overall timeline depends on the scheduling for each of these services and is agreed upon in the contract. Client’s circumstances such as building permissions from municipality often influence the project schedule.

Building sustainability beyond energy efficiency

It’s time to start judging building sustainability by looking at the whole building life cycle not just energy efficiency during it’s use. See how timber frame buildings stack up in a life cycle assessment and what can be done to build as sustainably as possible.

What prefab exterior wall panels consist of and how it matters?

We share insights on what makes a good exterior wall panel and what choices and tradeoffs a client might face when making choices on price and performance. 

What is a blower door test?

A blower door test may be required by building regulation for new buildings or renovation and it is a valuable tool to find air leakage problems for a timely fix.

What you should know about prefab panel house delivery?

Learn about how prefab house delivery to building site is planned, what the buyer should consider and most common mistakes to avoid.

Making sense of prefab construction – panelized or modular

We give you a brief overview of the differences between types of construction commonly referred to as “prefabricated”, “modular”, “panelized” or “kit homes” and how that matters.

Prefab house price offer comparison – avoid common mistakes!

A common topic with potential clients is comparing quotes of alternative suppliers with our offering. This article gives you advice how to better understand and compare prefab house price quotes and avoid common mistakes.

If there’s nowhere to build – build up! Building extensions

Wood panel construction is a great opportunity to improve and develop existing buildings where other development possibilities are scarce. Building extensions upwards could be a gamechanger in the years to come!

Building in timber frame and CLT helps reduce emissions

Timber structures would allow us to draw carbon from the air and store it in our homes and offices – leading some to believe that wooden buildings are the future of architecture.

Optimal indoor air humidity is important for health

Ecological house built with “breathing” envelope structures act as a buffer between differing air humidity levels inside and outside. Living in optimal relative humidity can improve health, comfort, productivity nad sleep quality.

ZTC switches to ecological insulation with newest system

From November Zemgale Technological Centre has changed the production process to using an industrial insulation system, so that panels are packed with cellulose or wood fibre wool with the highest quality.