Sealing concrete floors / Guides

Polished concrete floors and counters
Paints, finishes and natural coatings

Finishing concrete floors with silicate densifiers

...concrete slab on grade makes a perfect thermal battery for solar heat . Sealing concrete floors: Raw concrete is very porous and will have a lot of tiny, interconnected air pockets in it that will absorb moisture and other contaminants, and stain easily. It will also endlessly release dust into the air through any ...

Slab-on-grade construction technical guide
Slab on Grade

Slab-on-grade technical guide

...concrete slab that rests directly on grade. The technique lends itself to most types of terrain, with the exception of heavily sloped sites, and increasing the performance of slab on grade floors is simply done by adding insulation - yep, we have a guide for how to insulate slab on grade floors when building, here . ...

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

Mitigating radon gas in homes

...floors. More specifically, radon penetrates through: Stone foundations Crawl spaces Floor drains Un-sealed sump pump housings Cracks, gaps and joints in walls, floors, ceilings Openings around pipes Well Water What are the health effects of radon gas? Exposure to high levels of radon gas in air is...

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

Removing radon gas from basements and crawlspaces

...floors, this is possible in a crawlspace also if it is flat enough - though very few are. Radon mitigation example for when installing a basement floor, radon prevention is better than a cure Air sealing between floors to stop radon: If you have extremely high levels of radon, the Radostat and HRV option ma...

Canada's first LEED V4 Platinum certified home - The Edelweiss House
LEED Homes

Canada's first LEED V4 Platinum house - An EcoHome project checklist

...concrete floor, using it as a thermal battery for night time residual heat release. To make certain that the eco-friendly polished sealed concrete floor never feels cold underfoot, there is a 10-zone hydronic radiant-floor heating system paired with an electric boiler with carefully controlled backup heating control sy...

Renovate, Remodel or Rebuild? How to choose which is Best for Homes
Wall assemblies - renovation

Should I be renovating my home or tearing it down & rebuilding?

...concrete floor on top makes more sense. Voila, you now have a slab-on-grade foundation . You can then have either have a beautifully sealed and polished concrete floor or install eco-friendly hardwood flooring on top of the concrete if you prefer. Crawlspace renovation by filling with reclaimed rigid foam EPS panel...

Choosing a building envelope
Wall assemblies - new construction

Choosing a building envelope - starting with the perfect wall

...Concrete Forms: ICF block diagram courtesy Fox Blocks This is a system of polystyrene blocks that are stacked and filled with concrete to form the entire wall system of your home. Building with ICF blocks is great for reducing sound transmission and stopping the infiltration of air, insects and rodents - as w...

Passive House in Quebec
Passive House

The Passive-Aggressive House - Our History of a Passivhaus Build

...sealing all cracks. Less obvious, perhaps, is the minimization of “thermal bridges” such as concrete balconies – like those jutting out of most condos that siphon heat out of the floors all winter long. A super-duper heat recovery ventilator is necessary to bring in fresh air while minimizing heat loss. And finally, ...

Deck Construction, 10 Top Tips for Building Decks
Decks, porches and gazebos

Building a deck ? 10 Tips to make your deck last longer

...concrete with galvanized post support All of this can be done by an ambitious DIYer; you can either dig a wide hole with a shovel, or rent a gas powered or hand posthole digger. Find out the recommended local depth to get below the frost line and start digging. Drop a Sonotube (cardboard form) in the hole, level it...

Roxul mineral wool batt insulation in LEED Homes
Insulation and soundproofing

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

...concrete basement floor as insulation. I say this because it has been used for this purpose, and is completely ineffective. It would do no harm and still work as a vapour barrier, but it is a waste of money buried in concrete. See our pages on the best amount of basement slab insulation for more on how best to stay war...