- Wall assembly
- R-24+ insulated, sealed
- Steel line ceiling
- R-60 insulation
- Built
- Indoors, on dry materials
- Engineered for
- Northern cold, wind, and snow
- Code floor
- Same OBC as site-built
Are modular homes energy efficient?
Yes. A modular home meets the same Ontario Building Code energy requirements as any site-built house, and indoor factory assembly tends to deliver a tighter envelope than a build exposed to weather. ModBox homes carry an R-24+ insulated envelope with sealed construction, engineered for Northern Ontario.
The question hides an old assumption, that factory-built means built down to a price. The opposite is closer to the truth: a modular home must be engineered stiff enough to survive highway transport and a crane set, and the same discipline that protects the structure protects the insulation and sealing details inside it.
Why does factory construction produce a tighter envelope?
Because the details that decide airtightness, insulation fit, vapour barrier continuity, and sealing around penetrations, are done at fixed indoor stations on dry materials, and inspected before the module moves down the line. On an open lot the same work happens in wind, rain, and cold, on whatever day the schedule allows.
Framing lumber that has never been soaked does not dry, shrink, and open gaps the way weather-exposed material can, and a station worker who seals the same details every week gets them right by habit. This is the same quality argument that runs through our modular vs stick-built comparison, applied to the part of the house you cannot see after drywall.
What do ModBox homes actually carry for insulation?
Wood models are built with an R-24+ insulated wall assembly and sealed construction. Every model in the light steel frame line carries R-60 ceiling and R-24 wall insulation. Custom and commercial buildings are specified per project against their use and location.
Those numbers are set for this region's climate rather than a code minimum somewhere milder. Model-by-model construction details, insulation, heating, and electrical, are listed on each page of the wood catalogue and steel frame line, so you can compare specifications the way you would compare floor plans.
What does this mean for heating costs in the north?
The envelope is the biggest lever on a northern heating bill. Insulation and airtightness reduce how much heat the home loses every hour of a winter that runs for months, which matters regardless of whether the heat comes from gas, propane, or electricity.
That is also why efficiency belongs in the buying decision alongside price. A home is paid for once; it is heated every winter it stands. If you are working out the full picture, the cost guide covers what sits in the purchase price, and heating and envelope choices are settled with us during the design stage of the build.
Are modular homes more energy efficient than stick-built homes?
They meet the same Ontario Building Code minimums, so the floor is identical. In practice, indoor assembly tends to produce a tighter envelope than a weather-exposed site build, because sealing details are done at fixed stations on dry materials and checked before the next station.
Are modular homes cold or drafty?
No. A ModBox home carries an R-24+ insulated envelope with sealed construction, engineered for Northern Ontario cold, wind, and snow. A structure stiff enough to survive highway transport is also a structure that holds its sealing details.
What insulation values do ModBox homes have?
Wood models carry an R-24+ insulated wall assembly with sealed construction. The light steel frame line carries R-60 ceiling and R-24 wall insulation. Custom and commercial projects are specified per project.
Why does building indoors make a home tighter?
Because insulation, vapour barrier, and air sealing go in at fixed stations, on materials that have never sat in rain or snow, with each step inspected before the module moves on. On an open site those same details are done in whatever weather the schedule lands on.
Does an energy-efficient envelope matter more in the north?
Yes. Heating dominates the running cost of a Northern Ontario home, so the envelope is where efficiency is won or lost. Insulation and airtightness work every hour of a long winter, regardless of what fuel or equipment does the heating.
Can I choose the heating system and efficiency options?
Envelope and mechanical choices are settled during the design stage of the build, against your site, budget, and how the home will be used. Heating equipment goes in at the factory as part of the finished module.