Exterior basement insulation / Guides

Radiant floor heat in a bathroom
Delivery: radiant, forced-air and decentralized

DIY radiant floor installation

...basement floor behaves the same way. A heated floor will warm your feet and the air in the house (making it rise), but it will also be heating the ground below your house, and like any exterior surface of your home, the less insulation you add the more heat you will lose. We have installed a radiant heat system wit...

Choosing a building envelope
Wall assemblies - new construction

Choosing a building envelope - starting with the perfect wall

...insulation to the exterior. Mineral wool batts have higher R value than fiberglass, and they are much easier to cut and install properly. To discover the appropriate use of insulation, see our guide to insulation, here . Prefab homes: Prefab home construction image via Wikimedia In years past Pre-fab homes ...

Crawl Spaces or Slab on Grade Foundations?
Foundations and Basements

Slab on grade or crawlspaces, which is better?

...basement, so you get most of the cost, all the durability issues and potential hassles of a basement, PLUS a sore back and bruises on your head if you try to make any functional use of it. A crawlspace requires a concrete footing, then a short foundation wall, all the insulation on the walls and floor (or crawl-space c...

Crawl Spaces or Slab on Grade Foundations?
Crawl spaces

Should I Build on a Slab on Grade Foundation or a Crawl Space?

...basement, so you get most of the cost, all the durability issues and potential hassles of a basement, PLUS a sore back and bruises on your head if you try to make any functional use of it. A crawlspace requires a concrete footing, then a short foundation wall, all the insulation on the walls and floor (or crawl-space c...

Off grid, passively heated and cooled house in the Gatineau Hills, Que
Off-grid and Net-Zero Housing

Off grid living blog, part 2: passively heated, this house in Quebec aims for LEED certification

...exterior mineral wool board R5; plywood sheathing; house wrap; strapping; cement board siding. The ceiling is a mix of Roxul mineral wool batts and cellulose totalling R80, the basement is a mix of EPS foam and Roxul batts totalling R28. The benefits of a double exterior wall are plenty. It eliminates the...

$40k Interest-Free Loans for Green Home Renos, How to Apply Canada 2021
Grants and incentives

Greener Homes interest-free loan scheme 2021 Canada - the ultimate guide

...insulation and airtightness first, then look at the cool energy-saving gizmos. It's not that we don’t like gizmos ( see our favorite energy efficiency smart home gadgets here ), but gizmos break down and insulation doesn’t. No one ever called an insulation repair person in the middle of the night because their insula...

Why basements flood and how to prevent that with a sump pump
Basements improvements

Why Basements Flood & How to Prevent Flooded Basements

...insulation (see our pages on how to renovate basements so they don’t turn moldy and best practices for insulating new basements in cold climates ) Waterproof foundation membranes and drainage tiles directed towards sump pumps prevents basement floods. It's also a great idea to check around basement doors and wi...

Passive home designer Harold Orr, one of the original high performance homes
Passive solar home design

The principal designer of the house that inspired the global Passivhaus movement reflects on the project that started it all.

...insulation than 2x4's. Passive House Design Plans, the original Passive House looks like this on the design Second you can use rigid foam insulation on the exterior of the wall. The problem is that foam insulations are 5 to 15 times more expensive per Rvalue than the mineral fibre insulati...

Real estate

Evaluating a home before purchase: how to recognize value and potential problems

...Basements: Trust your nose - does it seem dank and mouldy? Is there any sign of previous flooding? Is it insulated, and how well? A good thing to know is when any upgrades were done; basements are almost always built poorly and will likely have a much shorter lifespan than above-grade walls. Sometimes walls in mechanic...

Slab-on-grade for Ecohome's upcoming video building guide
Slab on Grade

how to build a slab-on-grade on standard soil

...insulation After all the plumbing was in place, 8 inches of rigid insulation was installed - Rockwool underneath the slab and on the vertical exterior surface, and 8 inches of EPS under the footings. Comfortboard is great to work with, it cuts very easily and stays securely in place without slipping, allowing...

Frost in Attics: What causes Attic Ice? How to Fix it?
Roof assemblies - renovation

Why is there frost in my attic? Is ice in roofs a problem & How do I stop it?

...insulation, laying down a polyethylene vapour barrier over the whole surface (it can go up and down over joists) then reinstalling the insulation. Make sure the poly is well-taped at the seams and on the sides as well, it will serve little purpose if it allows air to flow up at the exterior edges. Pay close attention t...