MOST HOMEOWNERS DON’T REALLY UNDERSTAND HOW IMPORTANT THE INSULATION IS NEEDED TO GIVE YOU COMFORT AND REDUCE THOSE ENERGY BILLS IN YOUR HOME. BELOW IS SOME SIMPLE INFO ON INSULATION.
HOW INSULATION WORKS
You need insulation in your home to provide resistance to heat flow. The more heat flow resistance your insulation provides, the lower your heating and cooling costs.
Heat flows naturally from a warmer to a cooler space. In the winter, this heat flow moves directly from all heated living spaces to adjacent unheated garages, basements, and even to the outdoors. Heat flow can also move indirectly through interior floors, walls and ceilings wherever there is a difference in temperature. During the cooling season, heat flows from the outdoors to the interior of a house.
To maintain comfort, the heat lost in the winter must be replaced by your heating system and the heat gained in the summer must be removed by your cooling system. Properly insulating your home will decrease this heat flow by providing an effective resistance to the flow of heat.
Insulation’s resistance to heat flow is measured or rated in terms of its thermal resistance or R-value.
HERE ARE THE BASIC CATEGORIES OF INSULATION
LOOSE FILL INSULATION
Insulation that is made out of small chunks of fibers. It is also known as blown in insulation because it is blown in with a blower, a giant vacuum cleaner that works in reverse.
With batt insulation, insulative fibers are woven together to create a blanket of material. Batt insulation is available in 16 and 24 inch wide rolls usually in 8 ft. sections to fit standard spacing between the framing members in walls and ceiling joist. A paper or foil moisture barrier is installed on one side of this type of insulation which becomes the backing. The backing always is laid toward the inside of the house.
Insulative fibers that are tightly sandwiched together between 2 layers of foil, creating a solid insulative material that looks a lot like plywood. Rigid Insulation is usually installed in between roof sheathing and roof covering when no attic exists.
Spray Foam Insulation usually works in the most convoluted and irregular areas where normal insulation is hard to reach. Unfortunately this method usually only works if you have an open wall from remodeling or add on.
DIFFERENT INSULATION MATERIAL
Fiberglass Insulation is the most popular and most widely available type of insulation. You can purchase it as either batt style or loose filled. It’s one of the least expensive and the batts are easily installed. Its not flammable and resist water damage.
Fiber glass batt is spun from molten glass and sand into fibers and is an extremely effective insulating material because tiny pockets of air resist the flow of heat and cold.
Fiber glass loose filled insulation is an extremely effective insulating material because its fibers prevent air movement and the resulting heat loss to resist the flow of heat and cold. It is designed for use in attics and hard-to-reach locations such as corners, nooks and crannies. It is installed dry, and because it will not settle over time, maintains its full R-Value over the life of the home.
ROCK AND SLAG WOOL
Rock and Slag wool batt is similar to fiber glass except that it is spun from slag and other rock-like materials instead of molten glass. It is sometimes called mineral wool. Mineral wool insulation was among the earliest commercial insulation types.
Rock wool (or slag wool) loose filled insulation is similar to fiberglass except that it is spun from blast furnace slag (the layer of impurities that forms on the surface of molten metal) and other rock-like materials instead of molten glass. The production of rock wool uses by-products that would otherwise be put in a landfill. Rock Wool insulation is well suited for locations where it is difficult to install other types of insulation, such as irregularly shaped areas, around obstructions (such as plumbing stacks), and in hard-to-reach places. Blown-in loose fill insulation are particularly useful for retrofit situations because, except for the holes that are sometimes drilled for installations, they are one of the few materials that can be installed without disturbing existing finishes. Rock wool is installed dry, and because it will not settle over time, maintains its full R-Value over the life of the home.
Cellulose is made from ground-up newspapers. It is treated with fire retardants, some of which have been known to cause corrosion of wiring and pipes. The product settles significantly over time and must be over-installed to compensate for this settling. All loose-fill insulation are required to detail their installed and settled thickness on the bag label to let consumers know the expected settled R-Value. Cellulose is applied using a mechanical blowing machine. In an attic, cellulose is not typically installed above an R-30 because its weight can cause sagging of the drywall. Most energy codes now call for R-30 to R-60 in attics.
Made from cotton or recycled scrap denim there has been little independent testing done to look at the fire performance and moisture absorption of these products. Similar to cellulose insulation, these materials require the addition of fire retardant chemicals because they are combustible. Some fire retardants used in these products are know to cause corrosion of pipes and wiring.
THE R-VALUE OF INSULATION
R-value indicates an insulation’s resistance to heat flow. The higher the R-value, the greater the insulating effectiveness.
The R-value depends on the type of insulation and includes its material, thickness, and density. When calculating the R-value of a multi layered installation, add the R-values of the individual layers. Installing more insulation in your home increases the R-value and the resistance to heat flow.
The effectiveness of an insulation’s resistance to heat flow also depends on how and where the insulation is installed. For example, insulation that is compressed will not provide its full rated R-value. The overall R-value of a wall or ceiling will be somewhat different from the R-value of the insulation itself because some heat flows around the insulation through the studs and joists. Therefore, it’s important to properly install your insulation to achieve the maximum R-value.
The amount of insulation or R-value you’ll need depends on your climate, type of heating and cooling system, and the section of the house you plan to insulate.
BEFORE REPLACING OR ADDING INSULATION TO YOUR ATTIC YOU SHOULD DETERMINE WHETHER OR NOT YOU HAVE MOISTURE PROBLEMS. PROBLEMS WITH MOISTURE CAN BECOME WORSE WITH ADDING INSULATION. INSULATION CAN TRAP MOISTURE CAUSING MILDEW AND MOLD TO GROW AND SPREAD. IN ADDITION, WHEN WATER AND MOISTURE COLLECT IN THE ATTIC, IT CAN CAUSE STAINS AND ROT. BEFORE PUTTING IN ANY INSULATION, IT IS BEST TO SEAL ALL AIR LEAKS. THIS NOT ONLY HELPS MOISTURE, BUT ALSO REDUCES HEATING BILLS BY KEEPING COLD AIR FROM ENTERING THE HOME. YOU MAY NEED TO CONSIDER A RADIANT BARRIER.
Radiant Barrier is nothing more than a light weight aluminum fabric that blankets the existing attic insulation. Radiant Barriers have hundreds of thousands of tiny holes that allow vapors to pass and prevent condensation from occuring at the ceiling level. These barriers also refelect heat from above during summer time, while at the same time holding on heat during the winter time. You install the barrier as a single sheet. Radiant barriers are not insulation, and by definition, have no R-value. However, there are some radiant barrier products that have entrapped air spaces (bubble pack or multilayer films) where an R-value may be available for the product. Testing has shown that it is more cost effective to add insulation than a radiant barrier.
With advancements in renewable energy technology, many people are starting to be turned on to its potential. If you’re thinking about going to renewable energy, here are five reasons that you may want to go ahead and make the move to this type of energy.
1. Saving Money
One of the reasons that you may want to make the switch to the renewable energy is to save money. In today’s market, regular forms of energy are getting much more expensive by the day. The way things are going, you may end up paying quite a bit more for electricity from the electric company than you would from a renewable source of energy like solar panels.… Read the rest
You may be surprised at just how much your window treatments can affect the appearance of a home. Many people tend to see them simply as additions to the home that are only there to serve a practical purpose. This couldn’t be further from the truth as certain window treatments can help you achieve certain looks and effects in the home. One such example of this is the understated, subtle option of wooden venetian blinds, which can really play a big part in helping you give your home a modern appearance.
One of the very first things that people consider when it comes to any factor of interior design is colour, and venetian blinds are no exception to this rule.… Read the rest
While a deck can add style and a comforting place to entertain, it is far from a maintenance free addition. The proper maintenance is necessary to protect the life and appearance of your deck.
It is a common misconception that pressure treated wood, which is the wood most often used for decks, requires little maintenance. The pressure treating process involves the injection of chromated copper arsenate into the wood cells. Copper acts as a fungicide, while arsenic is an insecticide. While these chemicals protect against insects and fungus, they leave the surface vulnerable to the effects of rain and sun. Even redwood and cedar, two other common woods used for decks, can be damaged by the elements.… Read the rest
I recently performed my routine maintenance on the jacuzzi tub we have in the master bath. I thought I would share some of the tips I’ve picked up during my home inspection career. I’m always seeking to better my knowledge on questions that may come up during one of my home inspections.
All whirlpool bathtubs have a small amount of residual water left in the pipeline. Minerals in water begin a process of calcifying around the insides of your pipes. This hard scale build up not only restricts water flow, but becomes a perfect breading ground for infectious bacteria. As the algae breaks off, you will see it in your bath water as ugly black flecks.… Read the rest
How many people actually maintain their lawn equipment and store them properly before the winter season hits. In this article, I will show you how to perform some common routine maintenance on your gas powered mowers, weed trimmers and spreaders to insure they will operate properly for next spring.
Fill the gas tank on your mower just enough to complete the last mowing. Afterwards, run the mower until it runs out of gas. If gasoline is left in the tank all winter, it turns stale and collects water droplets from condensation. If to much gas is in the tank to run out, you can drain it or worst case, purchase some fuel stabilizer from your local auto parts store and add the recommended amount to your tank.… Read the rest
If you find the constant scheduling of tasks or general chaos in your household is too much to handle, then perhaps investing in a family command center is good idea. There are many versions of a family command center and each one is specifically designed to fit different household and family needs. The best thing about creating a family command center is that it is a great DIY project, so it won’t end up costing a fortune to get your family’s duties back on track.
How to Create a Family Command Center
Materials & Location
The general materials you will need to create a simple family command center are:
- Bulletin/dry erase/chalk board
- Hammer/electric drill
- Measuring tape
- Writing utensils (markers or chalk)
Depending on the complexity of your creativity skills or budget, you can also add decorative measures, such as ribbons, bows or picture frames of each family member, but feel free to be as basic as possible.… Read the rest
10 Easy Ways to Save Energy in Your Home
Most people don’t know how easy it is to make their homes run on less energy, and here at Leahy’s Inspections, we want to change that. Drastic reductions in heating, cooling and electricity costs can be accomplished through very simple changes, most of which homeowners can do themselves. Of course, for homeowners who want their homes to take advantage of the most up-to-date knowledge and systems in home energy-efficiency, Home inspector energy auditors can perform in-depth testing to find the best energy solutions for your particular home.
Why make your home more energy efficient?… Read the rest
During the hot Texas summer heat waves, all our hard work from the spring can go right out the window on our lawn and landscapes. Extra care needs to be done in order to keep the plants in our landscapes alive during the summer and especially during a heat wave. Here are some tips to keep your plants healthy and help them survive a heat wave.
Water, of course, is essential to keep your plants alive. If you are used to watering once a week, you will need to increase that to twice, and possible three times a week.
Note that young plants and trees that were planted during the spring will need extra care.… Read the rest
FORT WORTH DALLAS HOME INSPECTOR ON LEAKING A/C DUCTS.
CENTRAL HEATING AND COOLING SYSTEMS USE AN AIR DISTRIBUTION OR DUCT SYSTEM TO CIRCULATE HEATED AND/OR COOLED AIR TO ALL THE CONDITIONED ROOMS IN A HOUSE. EVEN WHEN PROPERLY DESIGNED, DUCT SYSTEMS MUST BE INSTALLED CORRECTLY TO BE EFFICIENT, MAINTAIN UNIFORM TEMPERATURES THROUGHOUT THE HOUSE, OPERATE QUIETLY, AND NOT ADVERSELY IMPACT COMFORT OR INDOOR AIR QUALITY
AT LEAHY’S INSPECTIONS WE LOOK THE SYSTEM OVER AND IF THE DUCT WORK IS BAD AND LEAKING, I MAKE THE RECOMMENDATION TO REPAIR OR REPLACE IT.
MAKE SURE DUCTS ARE PROPERLY SEALED AND INSULATED IN ALL NON-AIR-CONDITIONED SPACES RUNNING FROM OUR AIR CONDITIONERS AND HEATING SYSTEMS.… Read the rest
A moisture meter is a device designed to measure the moisture content of various building materials, such as roofing, siding, insulation, drywall, plaster, wood, tile and fiberglass. Structural and safety hazards, such as mold, rot and decay are all potential consequences of elevated moisture levels in these materials. An inspector can use a moisture meter to locate moisture that would not otherwise be apparent.
Here are a few ways that inspectors may find moisture meters useful:
•A moisture meter can be used to determine whether a material is moist enough to allow mold to grow. Mold will begin to accumulate on surfaces that contain approximately 20% moisture, although this value varies based on vapor pressure and other factors.… Read the rest