Handcrafted Log Homes are some of the most Thermally and Energy Efficient homes being built today and are great insulators. Easy to maintain warmth during winter and keep cool in summer. Conventional walls (brick veneer / weatherboard) with insulation batts and interior lining, have an insulation R-value varying from R2.5 to R 4.5, compared to a Log wall that has an insulation R-value of R8 or higher. Logs offer better thermal performance based upon their mass – but R-value of itself is not the only determining factor when it comes to your homes insulating efficiency.
R-value is a measure of resistance to heat flow through a given thickness of material. In theory, the higher the R-value, the greater that resistance. Unfortunately, R-Value has taken hold in the consumer’s mind as a universal method for comparing insulations – but not all R-Values are created equal, because they measure only one of the factors that determine how insulation will perform in the real world. Insulation is, first and foremost, meant to stop the movement of heat. The problem with using R-Value as the sole measure of an insulation’s effectiveness is that heat moves in and out of your home (or about any other structure) in four ways: by conduction (which R-Value measures), and by convection, radiation and air infiltration (none of which R-Value measures).
You may have already read about how well log walls protect from radiant heat in the Fire Protection FAQ. Our Custom Home floor plans, designed by the team at ‘Alpine Design’ using latest technology architectural computer programs, take into consideration such factors as the location on your land of the building envelope, north facing aspect, roof overhang, veranda roof angle, and location of windows to optimise the design. Having the Sun’s rays able to warm the walls during the day in winter but then keeping the Sun off the walls in Summer is one way to achieve solar radiation optimisation.
Our ‘full scribed’ log walls have joins between the logs that are so tight that you cannot even slide a cigarette paper in between them. Not only that, but the long grooves are insulated and gasketed, so air infiltration through the walls is totally non-existent.
We insist on using double glazed windows (mandatory requirement for new dwellings with most councils these days) and our method of window installation also completely negates air infiltration.
The roof of the home is a very important area to consider when it comes to thermal efficiency, because the most heat loss in a home occurs through the roof. Unfortunately, some people tend to overlook this fact, to the detriment of their home and this should not be so. It does not make sense to build a home of good thermal design, with walls that are so efficient, only to lose that advantage by having a poorly insulated roof. We insist on using ‘Air-Cell’ or equivalent brand of R2.5 roof sarking, as well as recommending high quality insulation such as polystyrene in the roof, just to bring it up to par with the rest of the building.
In conclusion, Alpine Log and Timber’s standard of excellence in design and construction will ensure that your home exceeds all expectations in terms of Insulation.