Johns Manville Formaldehyde-Free™ Insulation
When adding insulation to your home or office, it is most important to:
- Insulate your attic to the recommended level, including the attic door, or hatch cover.
- Bring the level of insulation in existing exterior walls up to the levels recommended for new construction.
- Provide the recommended level of insulation under floors above unheated spaces, around walls in a heated basement or unventilated crawl space, and on the edges of slabs-on-grade.
Our free energy smart home audit you determine where and how much insulation is needed to bring your home up to the recommended levels.
Our free energy smart commercial audit can help you determine where and how much insulation is needed to bring your building up to the recommended levels.

Our free energy smart commercial audit can help you determine where and how much insulation is needed to bring your building up to the recommended levels.

Attic Insulation
When you think about it, it's no surprise that the U.S. Department of Energy (DOE) states that one of most cost-effective ways to cut heating and cooling costs and make a home more comfortable is to add more insulation in the attic. The level of attic insulation is so important that the Georgia Energy Code of 1992 requires attics be insulated to at least the R-30 level. At Wilserv, we believe in going the extra mile, so we insulate attics to a R-38 level.
In the summer, the temperature in a typical Georgia attic can reach 140 degrees. In the winter, the same attic will usually match the outside temperature. A well-insulated barrier is needed to separate the rest of your home from extreme attic temperatures.
We use Johns Manville™ specially designed Attic Protector to insulate attics. This formaldehyde-free blow-in loose-fill fiberglass insulation contains a number of performance advantages including:
- Thermal Efficiency - provides effective resistance to heat transfer of a range of R-values.
- Sound Control - reduces transmission of sound through ceiling assemblies.
- Fire-Resistant and Noncombustible.
- Non-corrosive - does not accelerate corrosion of pipes, wiring or metal studs.
- Durable - it will not rot, mildew or otherwise deteriorate.
- Flexible - forms readily around corners and curved surfaces.
Attic doors and hatch covers should also be insulated. While they may seem inconsequential, the attic entry door is often a significant percentage of the total attic floor area.
And don't forget, a well-insulated attic should be adequately ventilated to prevent moisture accumulation. We can help you with this as well.
And don't forget, a well-insulated attic should be adequately ventilated to prevent moisture accumulation. We can help you with this as well.
Wall Insulation
Complete insulation coverage is one of the key factors to effective home insulation. This means all exterior walls should be properly insulated, including:- walls between living spaces and unheated garages, shed roofs, or storage areas
- foundation walls above ground level
- foundation walls in heated basements, full wall either interior or exterior.
Floor Insulation
The main advantage of boosting floor insulation is that extra R-value can be added with little additional cost. Attic floors over flat ceilings are one of the easiest parts of a home to insulate. You should also insulate floors above cold spaces, such as vented craw spaces and unheated garages. Also insulate:
- any portion of the floor in a room that is cantilevered beyond the exterior wall below;
- slab floors built directly on the ground; and
- foundation walls of unvented crawl spaces;
- To reduce air flows, be sure to extend the insulation into joist space.


