Thursday, January 31, 2013

Roof Ventilation: What does Rosie recommend?

First, let’s look at the kinds of roof vents.

Gable/louvers vents. Louvers are covered openings that allow air to escape the attic. They are located on the gable (non load-bearing) ends of the house and allow limited airflow. This system relies on wind direction to create airflow through the attic. When the wind blows perpendicular to the ridge, it circulates air around the louver, which  acts as it own intake and exhaust vent. If the wind blows parallel to the ridge, the airflow pattern acts as a draft that moves in one louver and out the other.

Power fans. Fans draw air through the attic by creating an air flow. They are effective, but they don’t allow natural forces to ventilate the attic. Plus, it’s somewhat expensive to buy, install and operating power fans, a cost that is greater than the fans’ benefit. Fans do not create airflow over the roof sheathing. Even fans that automatically turn on and off at selected temperatures are not worth the investment because the summer heat in the attic will cause the fan to run almost continually.


Saturday, January 26, 2013

How can I renew my cultured marble countertops?

Cultured marble is made from powdered marble that has been cast in polymer and covered in a gel coat. Marble alone is very porous and would stain easily if installed alone. With every day use, the gel coat loses a little shine and surface scratches reduce the luster of cultured marble.

Restoring the life to your cultured marble takes some finesse and patience. You will need an electric buffer with a 1” thick wool buffing pad and a solid polishing compound. Be careful that you do not use a buffer with more than 1800-2300 RPM’s; a higher powered buffer will burn the cultured marble. We suggest a solid polishing compound over a liquid product. The solid will turn to dust when used, but dust is easier to clean up than the splashy mess that a liquid compound creates.

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