Basements / Guides

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

Why Basements Flood & How to Prevent Flooded Basements

...basements is very common and most times can be easily avoided. Why basements flood in the first place is pretty easy to answer – it’s a hole in the ground and the ground is wet! Basements are sometimes below the water table to begin with, but water tables rise during the spring snow melt, and without proper basement dr...

Crawlspace radon barrier installation for radon mitigation
Radon in Homes - Mitigation

Removing radon gas from basements and crawlspaces

...basements: The dedicated HRV system mentioned above is also an option for removing radon gas from unfinished basements, as is sub-slab depressurization. If you have extremely high levels and the HRV isn’t sufficient and you also are not able to do sub-slab depressurization, you can pour an additional concrete slab on...

Basement wall insulation
Insulation and soundproofing

Properly insulating basements and concrete slab floors

...basements built to code are still often chronically under-insulated. Current building codes vary by region and state, but what is consistent is that if you insulate to the minimum requirements of code, your basement will still account for a significant and unnecessary portion of the heat loss in your home. Somewhere ...

Better Basement Design on basement walls prevents mold and midlew
Healthy indoor air quality

Basement renovations: How to prevent mold when finishing basements

...basements listed below that work well in the battle against moldy basements. EPS (Expanded Polystyrene), XPS (Extruded Polystyrene), Mineral wool: SPUF is quite expensive; so rigid insulation panels and a 2x4 wall with batt insulation can be a much more affordable option - but you need to know the right techniques ...

Exterior damp proofing and drainage mat to protect basements from wate
Insulation and soundproofing

Best practices for basement insulation in new home construction

...Basements Flooding - Flood Prevention, Pumps & Alarms here Slab floors: A large portion of heat is lost to poorly insulated basements, including below slab floors. The optimum levels of insulation below slabs varies by region and climate, but also by individual building site and soil conditions. To save both mon...

Finished basements can lead to mold and mildew
Healthy indoor air quality

Why are basements moldy? How to fix or Prevent a Moldy Basement

...basements especially in relation to the best insulation types to choose for basements. Better basement insulation techniques: The materials and design you choose are very important to prevent mold and should be appropriate for the environment they are destined to inhabit. Be very careful how and where you install w...

Roxul mineral wool batt insulation in LEED Homes
Insulation and soundproofing

Choosing the right insulation: the pros, cons and applications for walls, slabs & basements

...basements due to its sensitivity to moisture. Cellulose rigid foam panel insulation Cellulose rigid foam insulation is a greener choice than styrofoam UPDATE: A new environmentally-friendly rigid foam insulation board made from cellulose nanocrystals is a viable alternative to Styrofoam - according to res...

Slab on Grade

Finishing the exterior of an insulated slab-on-grade floor

WATCH MORE sustainable building VIDEOS Once a decision has been made to choose between a crawlspace or a slab foundation , you need to know how to finish the edge off durably. Typically the exterior edge of a slab on grade is made of EPS foam and can be parged. Having used rigid Rockwool panels meant we needed a...

Radon Mitigation - Installing a radon evacuation stack in a slab floor
Radon in Homes - Mitigation

Mitigating radon gas in homes

...basements & crawlspaces: Removing radon from basements & crawlspaces is easier if prevented rather than cured, and existing homes that are found to have high levels of Radon should look at mitigation asap. Depending on the state of your basement and or crawlspace, there will be varying degrees of difficulty in mitiga...

Slab on grade or a foundation and basement?
Foundation choices

Choosing between a slab-on-grade or a foundation and basement

...basements altogether and choosing to build a slab-on-grade instead. Concrete foundations - pros & cons: For a modest sized home, a concrete foundation will cost you easily between $20,000 and $30,000 . Factor in a subfloor and finished flooring, you’ll be lucky to stay under $40,000. Building basements ‘just becaus...

Slab on grade for a Passive Solar LEED Home insulated by Rockwool © Ecohome
Insulation and soundproofing

Insulating below slab-on-grade floors

...basements and stay 4 to 5 feet below grade is to avoid frost heave, using dirt to insulate. With a slab-on-grade, the difference is you use 'insulation' to insulate, rather than dirt. This effectively moves the frost line from 4 feet down to just 6 inches, problem solved. Building above grade on a slab can be a much ...