INSULATION

Neponset Valley Construction is a leading installer of insulation in Massachusetts.  We offer several different types of insulation:  

Fiber glass insulation
Glass wool is a thermal insulation that consists of intertwined and flexible glass fibers, which causes it to "package" air, resulting in a low density that can be varied through compression and binder content. It can be a loose fill material, blown into attics, or, together with an active binder sprayed on the underside of structures, sheets and panels that can be used to insulate flat surfaces such as cavity wall insulation, ceiling tiles, curtain walls as well as ducting. It is also used to insulate piping and for soundproofing.  


Cellulose insulation
Cellulose is very good at fitting around items in walls like pipes and wiring, leaving few air pockets that can reduce the overall efficiency of the wall. Dense pack cellulose can seal walls from air infiltration while providing the density to limit convection, when installed properly.

Cellulose insulation is safe. It is made of paper, but the chemical treatment provides it with permanent fire resistance. There’s been static generated by the fiberglass industry warning that cellulose could burn however independent testing confirms that it is safe. Cellulose is approved by all building codes. In fact, many professionals consider cellulose to be more fire-safe than fiberglass. This claim rests on the fact that cellulose fibers are more tightly packed, effectively choking wall cavities of combustion air, preventing the spread of fire through framing cavities.

Wet insulation of any stripe is bad. But cellulose is hygroscopic. It’s able to soak and hold liquid water. Undetected leaks can wet cellulose causing it to sag within framing cavities. Water leaks can compress the blanket of fiber and in extreme cases, can create a void space, degrading its thermal value. Another concern is that chemicals used to protect cellulose from fire make it potentially corrosive in wet environments. Tests conducted by the Oak Ridge National Laboratory show chemical treatments used to treat cellulose can cause metal fasteners, plumbing pipes and electrical wires to corrode if left in contact with wet, treated cellulose insulation for extended periods of time.


Spray Foam Insulation
Spray Foam Insulation is generally known as being a more effective product than conventional insulators such as cellulose or fiberglass.

Some other benefits to using spray foam as insulation are:

• It is environmentally friendly The foam allows for air sealing, which helps with energy efficiency
• Indoor air quality is maintained
• Noise pollution is decreased
• Certain formulas are impervious to moisture which is excellent for preventing water damage and mold growth
• It is easily and quickly installed
• It has the most R Value per square inch

There are two major factors to understand and consider with regard to Spray Foam Insulation.  Those are open-cell vs. closed-cell products.  The first is the nature of the foam. It is either open-cell foam, where the tiny cells of the foam are not completely closed but instead they are broken, and air fills all of the “open” space inside the material. This makes the foam weaker or softer feeling than closed-cell foam.

Closed-cell foam differs in that all of its tiny foam cells are closed and packed together. They are filled with a gas that helps the foam rise and expand and become a greater insulator. These cells can be formulated to obtain many characteristics, the most common being size and density.

The advantages of closed-cell foam compared to open-cell foam include its strength, higher R-value, and its greater resistance to the leakage of air or water vapor. The disadvantage of the closed-cell foam is that it is denser, requires more material, and therefore, is more expensive. Only certain companies have the equipment to install this insulation, the rest need to outsource it to companies like us. Come direct to us and save money