Rigid Board Is Rigid!
Because it's inflexible, it does a poor job filling the gaps or cracks that may exist in your walls. As a result, you'll have air passage ways in and out of your home. Air traveling in and out will bring moisture with it. This can lead to a multitude of problems such as mold, mildew and rot. It also doesn't prevent radiant heat transfer.
Spray Foam Insulation Won't Stop Radiant Heat Transfer
In addition to being very expensive, spray foam insulation won't prevent radiant heat transfer (the primary source of heat-flow in and out w in and out of your metal building, pole barn or house). Without a radiant barrier, when your roof gets hot it radiates solar-generated heat down. This often results in it being hotter in your building or house than out. It's also suggested you supplement open cell foam with a vapor barrier. Why not get the vapor barrier all in one product?
Fiberglass R-value In A Lab
You need an insulation that doesn't lose its thermal protection when you need it most - In the humidity of a winter. Fiberglass and cellulose R-value tests are done with the parameters of no humidity and no air. Maybe that exists somewhere in the universe, but not in your house.
The Prodex R-value is not affected by humidity. Other insulations such as fiberglass lose R-value once damp - And it will get damp due to normal humidity levels. Once fiberglass insulation gets damp, it will stay damp. Not only will you have trapped moisture in the blanket causing rot and mold, the damp blanket will provide less and less R value as the moisture builds.
Moisture build-up between fiberglass and the exterior of your home cannot evaporate. Warnings on the insulation rolls advise you to completely protect yourself from coming into any contact with fiberglass. Batts do not seal wall and ceiling cavities tightly.
Couple this with the fact that fiberglass insulation does not prevent radiant heat transfer (primary source of heat flow) and you can see why fiberglass insulation is not the recommended as a stand-alone insulation for house.
Wet Cellulose Insulation
Moisture absorption makes it heavier, causing it to lose R-value. It is prone to create too much dust that is blown into the house through small cracks or holes around fixtures. Like fiberglass, it can be a health problem.
How R-values are Measured
What's the best?
Cold wet winters, hot summers and strong winds characterize the typical conditions a house insulation must address.
Insulation that loses R-value due to moisture, allows air passage, neither prevents condensation nor repels the summer heat is obviously NOT the best the insulation for your home.
Traditional insulation types such as fiberglass and cellulose lose R-value when exposed to humidity - We REPEAT - There is always humidity in a house. They do not prevent radiant heat gain. They also do not prevent air passage.
Prodex Total Plus = Insulation + Radiant Barrier + Vapor Barrier + Air Barrier - All in One Product! Given those facts, we submit it's the best insulation for a house. It definitely needs to be part of a complete house insulation system.
The only major difference between a mobile home and a standard home as it relates to insulation is space. You do not have the luxury of space to apply massive insulation. A (0.2 inch, 5mm) or (0.4 inch, 10mm) thick Prodex roll is a perfect match for your mobile home.
What is the cheapest way to insulate an old house?
An old house needs insulation to prevent heat loss. It especially needs a good seal from air. It requires protection from moisture and radiant heat gain. The cheapest way to insulate a home is to acquire ONE product that does everything. Prodex Total is uniquely qualified to address heat, cold, condensation and air.
Our delivered price is better than any insulation that matches our specifications. If you feel we're mistaken, please email sales@Insulation4Less.con the web address of where you feel you've found a better deal.
Heat, Cold and Condensation in a House
Any home that uses fiberglass rather than Prodex Total will incur condensation and loss of R-value as a consequence of moisture in the fibers. The house will also get hot on sunny days from radiant heat transfer.
Condensation - It can seem like a tropical rain forest inside an unprotected home. It's worse on those days where there is a greater contrast between temperatures at night vs. day. A temperature difference between outside and inside your home will create condensation - Similar to what happens when you leave a cold can of beer outside on a hot day.
- Heat - Mid-summer sun rays hitting the roof of a house radiates the heat inside (especially metal roofs). It makes it unbearably hot and humid inside.
- Cold - Winter temperatures on the exterior sheathing turns it cold. The cold sheathing sometimes creates the effect of an ice box making colder inside the house than out.
Why Do I have Ice Dams Inside My Roof?
Temperature differences between inside and outside your home can create condensation. The condensation that forms under roofing can make it seem like it's raining inside in the summer of frosting in the winter.
Prodex eliminates the moisture (condensation) from forming on the sheathing. It does this by making the temperature of the inside of the sheathing approximately the same as the outside. When the heat or cold from outside comes through the sheathing it hits the outside reinforce foil of Prodex and is reflected back upwards through the underside of the sheathing. This process keeps the sheathing temperature consistent on both sides. In addition, the inside layer of reinforced foil in Prodex reflects away the heat (heater) or cold (air-conditioning) from inside the house from getting to the sheathing. This also helps in preventing condensation.
It's Hotter Inside My House Than Outside
Ever wonder why it's so hot and humid upstairs in your house in the summer? Roof materials exaggerate the heat of the summer and frigid temperatures of the winter. Metal is a very good conductor of heat and cold. In hot weather, metal sheeting rapidly radiates the sun's heat into a house. In cold weather it rapidly releases the heat out of your house.
Prodex reflects 97% of the radiant energy (primary source of heat flow) that strikes it. Prodex also reflects back the heat inside your home. Each unit of radiant heat energy that is reflected away from your home in the summer, and each unit that is reflected back during the winter, means less operation of your heating and air conditioning system - Less wear and tear on your equipment - Less money you pay in utility costs.
These photos are just a gift to you.... We have used your brilliant material in this historical home and in the homes of many of our family members.... if a couple of 75 year olds can do it, anyone can...
Sam and Alice Welch - Chesapeake, Virginia