HomeMy WebLinkAboutFile Documents.401 Castle Creek Rd.0024.2019 (9).ACBK
July 15, 2019
TO: Steve Jones & Sam Meeks, FCI Construction
FROM: Tyler Cain, Lightly Treading, Inc.
RE: Air Tightness Test Report, 403 Castle Creek Rd, Aspen, CO, 81611
Summary
On Jul 15, 2019, air tightness testing was performed at 403 Castle Creek Rd, to verify compliance with
the following standard(s):
IECC 2015 Commercial
Threshold: ≤ 0.4 cfm @ 75 Pa per sqft of surface area
The test results are listed in the table below.
Location Infiltration Sur-
face Area, ft2
Threshold for
IECC 2015, CFM
Test Result @ 50
Pa, CFM Passing or Failing
Whole Building 25,328 ≤ 10,131 12,280 FAILING
Improvement Opportunities
See the images and comments below of the envelope air sealing opportunities for improvement. All of
the available improvement opportunities were corrected or sealed before the final air tightness test re-
sults were obtained. The only observed openings left unsealed were the gaps in the overhead garage
door gasketing at the very bottom and top corners. The remaining observed improvement opportunities
were addressed and corrected while we were on site. Based on the air leakage results being reduced by
about 3,000 cfm after all improvements were made and the lack of any other evidence of observed air
leakage sources, we recommend this building is PASSING, unless otherwise stated by the City of As-
pen.
Continued On Next Page
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Overhead Garage Doors
There are currently gaps at the corners of the top and bottom gasketing on the overhead gar-
age doors. There is not much that can be done about these gaps, so they were not sealed.
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We did observe air leaking from the side of the metal framing/rails on the sides of the overhead garage
doors. These gaps were sealed with clear sealant since this would not hinder the doors movement up
and down on the tracks.
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Windows
We observed some air leakage coming from the metal seams in the window frames on the East
side of the building. A few pieces of gasketing and some caulking were discovered to be missing
after further investigation. All these seams were then sealed either with gasketing or caulking
from the outside.
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The picture below shows how the temporary plastic covering was billowing outwards due to the air leak-
age coming from the windows while the envelope was under depressurization.
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Dampers on HVAC
Air leakage was observed to be coming from the HVAC system even though we were informed
all the outdoor air intakes or ventilation exhausts had closed dampers. These dampers need to
be inspected and fixed if necessary, but for the purposes of the test all these registers and
openings in the HVAC system were sealed.
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Exterior Wall Penetrations
There were a few penetrations in the North exterior wall that did not get 100% sealed before
our testing and were leaking air. During the test these were sealed with our blue duct mastic
tape.
Tyler Cain
Lightly Treading, Inc.
303.733.3078: work
303.295.2661: fax
866.973.9268: toll free
www.LightlyTreading.com
Please be advised that the recommendations provided by Lightly Treading as outlined in this response are in-
tended for the sole use and benefit of FCI Construction and should in no way be construed as replacing or other-
wise altering the contractual responsibilities of the design and construction team members as they relate to the
successful completion of the building envelope for this project. As such, the architect-of-record, shall be solely re-
sponsible for the review, incorporation and coordination of all Lightly Treading’s review recommendations ac-
cepted by the owner/developer for incorporation into the contract documents for this project.
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