Blown-in Attic Insulation
When properly installed, blown-in attic insulation provides a much better level of coverage than fiberglass batt insulation. Blown-in insulation is pneumatically installed and results in an even, seamless, blanket of insulation that completely covers your entire attic. Thicker blankets of insulation have higher R-Values and are better at maintaining the energy efficiency of your home.
The most common R-Values we install are:
- R40 (minimum level required to meet code)
- R50 (for customers looking to maximize their investment in energy savings)
Whether you have a new home or are planning an attic top-up, we strongly suggest a minimum finished value of R40. See our “Links” page for more information.
Rigid Board Insulation
Rigid foam board insulation is typically installed as an insulation and vapor barrier over exposed concrete or on the outside of exterior walls. It generally offers an R-Value of “5 per inch”, based on the thickness of the material (ie: a 2″ thick sheet would have an R-Value of 10). We commonly install thicknesses of 1″, 1.5″, and 2″. Sheets are nailed or glued to your exterior wall, and all joints are sealed with construction tape to further reduce air flow.
Blown-In Wall Insulation (for older, uninsulated homes)
Many homes that are 40 yrs or older commonly have no insulation in the outside wall cavities. If you currently own an older home and are looking to upgrade the wall insulation, we can help. This will typically involve drilling holes around the outside perimeter of your house, pumping insulation into each empty wall cavity, then resealing the holes and repairing the siding.
Homes with wooden or vinyl siding make excellent candidates, and we have a long list of happy customers should you wish a referral.
Through Vent Installation
Through vents (rafter vents or eave vents) and their blocking are used inside your attic at the outside edges of your home, and commonly serve two purposes. They act like a funnel, allowing air to flow through your attic assisting ventilation. They also help make sure that the insulation installed in your attic does not fall into the eaves of your home, potentially blocking your soffit vents and restricting air flow.
Although spray and blown-in insulation are becoming increasingly popular among energy-conscious homeowners, fiberglass batts are still common in new home construction. “Batts” are blankets of fiberglass insulation, typically 4′ long with widths of either 15″ or 23″, this allows the batt insulation to fit snugly in place when framing is 16″ or 24″ on center.
R-Values for batt insulation, the measure of resistance to heat flow, generally varies from R12, R20, R31, or R40. Higher R-Values mean thicker batts, for example, a 2×4 wall would be insulated with an R12 batt, while R20 would be used in a 2×6 wall.
Fibreglass batt insulation can also be used in attic areas. Currently, our local Building Code demands a bare minimum of R40 in all attic spaces. Most homeowners are opting to upgrade this to R-50, as the upgrade charges are generally small.
Fiberglass batt insulation also has acoustical properties. It is often used to help with soundproofing between interior walls and floor/ceiling assemblies.
If you have decided to use fiberglass batts for your new home, the next important decision to make is which installer to select. Fiberglass batts must be carefully cut and fitted into each cavity to ensure they are not compressed (not even a little bit!!) or that there are no air pockets or gaps between them. Improper installation can lead to a wide range of problems (cold spots, condensation, mold, reduced R-value), many of which will not be evident until you have been living in your home for several months. Fiberglass batt insulation, properly installed by Twin City Contracting, can help you save money on energy costs and keep your home warm, dry, and comfortable.
We’re very proud of the quality of our workmanship. Please visit our image gallery for pictures of some finished fiberglass batt insulation projects, then contact us for a free quote. As always, we encourage you to ask us for references or ask your local building inspector what they may think of the quality of our work.
Vapour Barrier and Sealant
Installed on the warm side of your insulation, a polyethylene vapor barrier is required by code for all insulation in our area.
Proper vapor barrier installation is important for reducing air flow and preventing moisture and mildew buildup inside your walls. The vapor barrier is installed directly over the insulation with no air space in between. Keeping out any wrinkles, the vapor barrier can have a mirror-like finish, completely wrapping your wall, ceilings, and perimeter joists.
In order to be effective, the vapor barrier must be completely sealed. All edges join, seams and penetration of the barrier are finished with an acoustical sealant to further restrict the passage of vapor through the wall.
Please see our gallery for more information on properly installed vapor barrier and sealant.