Technical information
Explore prefabricated construction - knowing the components helps you understand how an impressive, energy-efficient home is built:
Prefab houses, turnkey prefabricated homes
A prefabricated house offers a contemporary approach to constructing an energy-efficient home quickly and with superior quality. As one of the most popular types of residential, prefab houses have demonstrated their durability and sustainability over the years. Prefab house is often called as a House-Kit.
Nordik House sources prefabs that are manufactured according to the Ontario Building Code (OBC) & European Technical Assessment Organization (ETA).
It is important that the CE certifications have been followed in production:
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Glue laminated timber GL24h, GL28h, GL32h according to EN14080: 2013
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Finger jointed timber according to EN 15497: 2014
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Strength graded timber C14 - C30 according to EN 14081-1: 2005 + A1: 2011
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Use of FSC® (C-108038) certified wood materials​
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Cross-laminated timber (CLT) is a new generation of engineered mass timber product. Several layers of kiln-dried lumber stacked in alternating directions are bonded with structural adhesives and pressed to form a solid, straight, rectangular panel.
Log houses and premium wooden house-kits
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Laminated logs thickness: 90mm, 134mm, 150mm, 180mm, 210mm, 250mm
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CLT logs 110 (thickness) x210mm (height), 134x210mm, 202x260mm, 270x260mm
Wood samples
CLT
Glulam
Comparison of European & North American Insulation value
U-Value vs. R-Value
U-Value
U-Value & R-Value
Conversion basis: North American R-value uses h·ft²·°F/Btu. If U is in Btu/(h·ft²·°F), R = 1 ÷ U. If U is in W/(m²·K),
R (North American) = 5.678 ÷ U. Lower U-values and higher R-values indicate better insulation
Log Wall Thermal Resistance Comparison
Calculation assumptions: Nominal wood-only resistance uses λ = 0.12 W/m·K. The added mineral wool needed to reach nominal R-35 uses λ = 0.036 W/m·K. Metric resistance is RSI = thickness ÷ λ; North American R-value = RSI × 5.678; metric U-value = 1 ÷ RSI. The log U-value applies to the wood layer alone, while the total wall U-value corresponds to the nominal combined R-35 target.
Connections, profiles, moisture, air films, finishes, fasteners, framing, compression, and thermal bridging are not included.
Element House details
External wall element
1. Timber frame (18 mm)
2. insulation (50 mm)
3. Vapour barrier
4. Rafters + insulation (200 mm)
5. Wind protection fabric
6. Ventilation slats (30 mm)
7. Timber frame (18 mm)
Internal wall element
1. Gypsom board (12.5 mm)
2. Rafters + insulation (100 mm)
3. OSB3 (12 mm)
4. Gypsom board (12.5 mm)
Roof element
1. Timber frame (12 mm)
2. Insulation (95 mm)
3. Vapour barrier
4. Rafters + insulation (200 mm)
5. Roof membrane
6. Ventilation slats (45 mm)
7. Slats 20x95 (103 mm)
