A new concept in solar power, photovoltaic shingles, can help protect your home from the elements while generating pollution-free electricity.Wires from the photovoltaic cells on each shingle connect to a junction box. The current is sent to a battery for storage, and an inverter converts it to AC power. You can operate everything from a home computer to a security system with the electricity generated by these shingles.

Here s another great tip from BobVila.com. While we all know they don t like to be fenced in, after thousands of years of domestication, dogs need boundaries to be safe. Fortunately, dog owners have lots of options to choose from when it comes to fences. If your yard isn t fenced or you d simply like to keep Rover out of the lily bed, you can build him a dog run with 4- to 7-foot wire or polyethylene rolled fencing. Staked into the ground without the use of heavy equipment, this dark mesh fencing is designed to be easily movable, strong and unobtrusive. You can also find chain link or powder-coated metal kennel kits to keep your dog safe outside and limit his range. Look for fencing that s 12-gauge or heavier and doesn t include aluminum fittings, which can weaken over time outside. If a kennel or dog run isn t something you want in your yard, an underground electronic fence may be the answer. Some brands are even wireless now so no ditch digging is necessary. As the dog approaches the fence boundary, his collar emits first a warning sound and then an electronic stimulus, or correction, to keep him away. To avoid confusing your dog, training has to accompany this system. Electronic fences are available with incremental strength levels for training and for different sized dog breeds. You don t want your dog escaping and getting injured because of a dead transmitter battery so look for a system with the longest battery life possible. And remember to check the battery regularly. Find out more at BobVila.com: the ultimate home improvement web site! 2008 BobVila.com

Here s another great tip from BobVila.com. When photovoltaics or the conversion of solar energy to electric power came on the scene 30 years ago, it was so inefficient that few thought it could ever power American homes. But the technology has come a long way, and demand for PV systems in the U.S. is now growing at almost 25 percent per year. In sunny California, brownouts and energy crises have pushed the state to set an ambitious goal of putting photovoltaic systems on a million roofs by 2016. The cost of installation can be daunting for homeowners, but government incentives make them much more enticing. The federal government rebates $2,000 per system. In California, the state not only gives a property tax reduction for the cost of the system, it also rebates $2.50 for every system watt. So, a 4-kilowatt system that costs $36,000 only winds up costing the homeowner $24,000. In Florida, homeowners can get $4 per system watt, so the same system costs only $18,000. Add to that the value of the electricity generated by the system which, depending on your area, can be between $250 and $750 per year and photovoltaics start to make a lot more sense. As roof-mounted panels or even integrated into asphalt roof shingles, photovoltaic cells contain silicon wafers which react to sunlight by releasing free electrons. These electrons create direct electric current, or D/C power. The system s inverter switches the D/C to the alternating current, or A/C, that powers our homes. Household photovoltaic systems have become simpler and better adapted to mainstream use now that grid-tied net metering is easier and no battery backup is needed. Any electricity the system generates that s not used in the home gets sold directly back to the power company. In sunny areas, the larger 4-kilowatt systems available today can generate half or more of what the average household consumes. Even where it s not so sunny, photovoltaic systems have become so viable that many forward-thinking developers are pairing them with geothermal heat systems to market the new non-polluting, low-energy home. Find out more at BobVila.com: the ultimate home improvement web site! 2008 BobVila.com

Bob reviews two types of water barriers installed in the basement to prevent water intrusion. The water barriers block moisture that comes through the walls and channel it into a perimeter drainage system in the floor. Larry Janesky of Basement Systems reviews the WaterGuard system and explains how the pipes are set to a proper elevation by backfilling with crushed stone. Pitching the pipes makes the water drain into a sump hole where it can be pumped out of the home. Janesky shows Bob the WaterGuard ports that open into the embedded channels for inspection or cleaning, and provide a drainage outlet for the dehumidifier. Janesky then reviews the TripleSafe Sump Pump and how it works to pump collected water out of the home. The system uses three pumps to minimize the risk of flooding by pump failure. The primary pump has a secondary backup pump in case the it fails or becomes overloaded. Both pumps are hardwired into the home's electrical system. Each pump has its own discharge pipes so that the system will not be overloaded by increased demand. A third pump is battery-operated in case of power failure. An alarm sounds when the battery-driven pump kicks in to alert the homeowner so that power can be restored before the battery runs down. IceGuard fittings have been put on the discharge pipes outside so that water will clear the home even if the underground discharge pipes are frozen.

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