Uninsulated Masonry Wall
Insulated Masonry Wall
Move shelving, and all household items away from wall to be insulated.
With clients permission, remove any fixtures from the wall such as shelving and decorations that can be easily removed.
Remove any foundation ties or other obstructions that could damage pin n drape materials.
Follow work orders and guidance in Air Seal Basement or Crawl walls to complete air sealing of wall and sill prior to installing insulation
Follow work orders and step 3a-3f to install insulation.
Materials shall be installed to have a minimum expected service life of 30 years.
Install insulation with the R-value specified on work orders to improve the thermal performance of the basement or crawlspace.
Install a continuous air barrier on the interior (warm) side of the insulation to allow insulation to dry to the interior of the home, to prevent condensation on the basement wall, and to increase durability of the measure.
Vapor barrier must be durable, and vapor permeable such as Tyvek™ HomeWrap, or perforated vinyl or similar.
Install insulation so that the thermal barrier is as complete and continuous as possible across the surface of the wall.
Insulate all the way to the corners, floor and ceiling.
Align or abut new insulation with existing insulation to create a continuous thermal barrier with minimal breaks.
Only walls on the thermal boundary of the dwelling should be insulated.
If you are unsure about where the thermal boundary is being established, consult with the energy auditor.
Use the methods in steps 4a-4d to secure the insulation to the wall
Install furring strips around windows, doorways, and other openings in the thermal boundary to attach insulation to.
Attach air barrier to the furring strips using staples or other mechanical fasteners to ensure a durable installation that will last the life of the measure.
Install insulation pins, per manufacturer's specs, to attach insulation to the wall with a durable connection and prevent insulation from sagging or moving.
Use the appropriate length of pins to prevent compression of batts
Overlap and tape all seams on the air barrier to provide a continuous barrier.
Use only manufacturer approved tapes.
Tape should not be used to secure the insulation to other substrates like the foundation, framing members, or furring strips. Mechanical fasteners should be used for these connections
Insulation should cover existing electrical wires (except knob and tube), and plumbing drain lines that are fastened to the wall.
Select the best option from steps 5a-5c to address each supply line on the wall being insulated.
Whenever possible move the supply lines in front of insulation to keep them in the envelope to prevent freezing
Use pipe wrap to insulate supply lines that are secured to the wall.
If it is not possible to insulate or bring supply lines into the envelope, then install a break in the insulation
Follow Steps 6a-6f to fit insulation around windows, doors and utility access points.
Insulation shall fitted be securely affixed around windows, doors, electrical boxes, and plumbing cleanouts and valves.
Windows and access points should be accessible, with a minimal break in the thermal boundary.
Trim the Insulation out of the window or other openings in the thermal boundary.
Cut the air barrier where it covers the window, or other openings in the thermal boundary.
Use a diagonal cut from the top corner of the cutout to bottom. Then cut from opposite corners creating an X.
Use furring strips and/or Insulation pins to secure assembly to wall, to prevent it from detaching from the foundation wall.
Use the flaps from the house wrap to cover the exposed insulation around the edge of the window or opening in thermal boundary.
Tape the corners to cover any insulation still exposed.
Secure the air barrier to the furring strips with staples or other mechanical fasteners.
Tapes tend to fail here and should not be used unless also mechanically fastened
Avoid unnecessary compression of the insulation near the edges and around access points to maximize overall r-value.
In some situations the wall insulation can also be used to insulate the sill. Follow steps 7a-7e to install this method.
Install insulation on wall with enough excess insulation to cover the sill.
Trim the house wrap, insulation and vapor retarder to fit around the floor joists
Install insulation on wall and sill in a manner that prevents air gaps between the insulation assembly and the wall and sill.
Use staples or similar to secure the housewrap to the floor above the sill, and to the sides of each floor joist.
A dated insulation certificate signed by the installer will be posted on a wall in the space where the furnace is located, a utility room or an approved location inside the building.
Certificate shall include: Insulation Type, Coverage Area, installed thickness and minimum settled thickness, Number of bags installed in accordance with manufacturer specifications
Educate the client on use and care of newly installed Insulation.