"How can I paint my concrete floor when there's white powder on it?"
White powder is salt deposits called efflorescence that is there because high quantities of moisture are migrating through the floor. You need to solve the water problem first or no paint will stick. So find out why there is wa...
The national building code requires a minimum level of insulation in a basement that reaches about two feet below the outside grade level. The objective is to make this storage space a heatable space. Hence some materials and techniques have developed that satisfy this minimum code requirement th...
I recently spent some time at the Terrazzo, Tile and Marble Association training centre in Toronto and learned some very basic but surprising things, like just how to apply tile mastic and why it makes a difference.
Using a notched trowel gives you a measured quantity of mastic or thinset m...
The best way for air to move through a duct is to have a straight duct with a smooth inside wall and a round form will have the smallest surface area to cause the air to slow down. That straight smooth round duct is what is considered the benchmark for good ducting.
Everything else is measure...
We caught a viewer in the hardware store who asked if they could paint ceramic tiles.
Yes, now it is possible.
First take the gloss off of the tiles with sandpaper. This is not easy to do and is best done with a belt sander. The paint companies will tell you that it is not necessa...
Evert from Brownsburg, Quebec has the problem of a sewer odour in his bathroom but isn't sure where it is coming from and whether or not he needs to change his toilet.
It can in fact be difficult to localize the source of sewage odours and hence which fixture or drain is guilty.
One technique ...
When plumbing pipes and chimneys have to go through sloped roofs, they are always cut fairly large just to make sure that the pipe will pass through. The problem is that a 3 inch round pipe needs an oval hole in a sloped roof. There is an easy trick for drawing out the hole.
Hold the p...
How do you get enough space above the wall and below the roof for both massive insulation and ventilation? One way in new construction, or even in the rebuilding of a roof, is what we call a Raised Heel Truss. This design forces the overhang of the house further out from the house, but does gi...
In all too many new houses, there is a seasonal problem where in the winter the ceiling actually lifts itself right off the wall in the centre of the house, and then settles down after the heating season. Even in some older houses this goes on every year.
What causes this crack?
Avoiding...
"Decor" paints are the deep rich colours that are often used for decorative trims or accent walls. But home painters are constantly complaining to me that they can't get the right colour at home, or that it requires three and four coats to cover the old wall.
To understand what is wrong and h...
