More on: Refrigerated Storage inspectionsfor air leakage and insulation
More on: Residential or small commercial inspections for air leakage and insulation
A basis for planning, immediate repairs, remedial work or upgrades
Proof is possible for air leakage reduction efforts with the use of a calibrated blower door
Infrared imaging room-by-room while the building is depressurized
Poor air seal at chimney
Leakage at window frame
Leakage at recessed cans and around chimney
Leakage from attic inside split-level house half wall
Stack Effect considerations during blower door testing, infrared scanning and report writing:
Images from prior Armco Inspections refrigerated storage projects:
Cold air leakage at rear freezer wall insulated panel vertical joints and at wall penetrations for refrigeration pipe (dark blue vertical patterns)
Cold air leakage from damaged or poor wall/floor junction seal (dark blue pattern at bottom of wall panel)
Warm air leakage “trails” (bright orange) at automatic door joints (door is closedjustabove the temporary blower-door installation)
Cold air leakage “trails” (dark blue pattern) on wall at interior door between frozen and refrigerated storage areas
Refrigerated storage area manual sliding door perimeter warm air infiltration shown as warmer/orange pattern on wall
Frozen storage area warm air infiltration at exterior wall floor/wall junction (bright orange at highest leakage)
Frozen storage area warm air infiltration at wall/ceiling joint (bright orange sloping pattern)
Frozen storage area condensate formation on ceiling support structure from warmhumid air infiltration at defective wall-ceiling structure and failed seals (looks like icicles)
Exterior wall Insulation issues in frozen or refrigerated storage buildingscan be negligible as the engineered and pre-fabricated metal-clad insulating panels are usually interlocking and sealed from panel to panel. If the ceiling is similarly constructed and protected by a separate low-slope or pitched roof, the wall-ceiling joints will also be engineered and well sealed. In these cases, air leakage is typically around doors at damaged seals or where the walls or ceiling have been damaged or the wall-floor (slab) seals are damaged or deteriorated.
Ceiling panel insulation may be compromised if the ceiling/roof structure is conventional with corrugated decking, insulation boards,air/vapor barrier and covering membrane. In this case, water intrusion or leakage can cause degradation of the foam or fiberglass insulation resulting in significant levels of heat loss and increased utility expense.
For suspect conventional roof construction, Infrared and nuclear inspection is recommended to isolate areas of moisture contamination and excessive heat transmission for targeted repair. For more information on these techniquessee https://armco-inspections.com/roof-inspection/.
Residential images from prior Armco Inspections air leakage and insulation survey projects:
Recessed trophy area with no air barrier or insulation is directly coupled to humid exterior air resulting in high levels of mildew on the adjacent office walls below
Bedroomcold air infiltration through insulation and interior horizontal tongue and groove plank wall cladding – also migrating up and through ceiling with same construction
Missing and poorly installed insulation (rectangular orange topatterns) plus air leakage at chimney/ceiling transitionmissing results in higher than necessary cooling costs
Insulation with mottled appearance is water saturateddue air/water barrier (Tyvek) and transport of exterior humid air into the wall cavity
Insulation out of positionin vaulted area of wall results in cooler area immediately beneath
Interior wall is directly connected to crawlspace and un-insulated to boot – very cold living room in mid-winter
Partial interior wall is intermittently coupled directly to the attic airspace in this split-level home by missing insulation a typical problem for this residential design
Difference in heat transmission through insulated vs single pane (leaded glass) window – (dual pane window in entry door)
Air leakage shows beneath basement access door from infiltration in the basement (windows and wall penetrations)
Air infiltration from toilet pipe penetration in wall that is coupled to crawlspace by same pipe penetration through stud wall shoe
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