SPRAYFOAM Professional - Summer 2017 - 28

continued from page 26

ACCA's HVAC Quality Installation
Specification (ANSI/ACCA 5 QI-2015),
based on manufacturer recommendations, covers proper sizing, load calculations, duct leakage, airflow delivery and
refrigerant charges.
Then there's Manual J, also known as
Heat Load Calculation or Cooling Load
Calculation, a protocol for sizing equipment that has been used by professionals for decades.
Sheldon, for example, who was a
heating and air contractor for 15 years,
was one of the first in his area to use

Manual J calculations, and said he
learned early on how insulation and
HVAC impact each other.
"So we would run a Manual J calculation, and builders would say, 'Oh,
yeah, we've got great insulation. I'm
going to have R-30.' Or R-40, or whatever they were proposing. And we'd
calculate our equipment and ducts
accordingly, but sometimes it wouldn't
work well. We'd have hot rooms, cold
rooms and just generally undersized
systems, and I was perplexed. Even
though it was the last thing I wanted

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1

| Summer 2017

3/15/17 2:36 PM

to do, we too started oversizing systems to make sure they would actually
work. Once we got infrared cameras
and other forensic analysis tools, we
were able to find areas the insulation
wasn't there. It was simply missing in
places, or it was in poor condition and
the house was leaking like a sieve. The
HVAC system and the insulation and
air sealing systems are dependent on
each other and neither can provide the
intended comfort, energy efficiency and
durability without the other."
Of all the elements of HVAC, it's the
"V" or ventilation that concerns Sheldon
the most.
"Heating and air guys have better
tools now, and can properly analyze the
house and house plan to determine the
equipment size needed. If we do our
job, we can make sure the heated or
cooled air stays in the house, but if we
do a great job insulating and air sealing,
and they don't do the ventilation part
of HVAC, people could be hurt. It's not
healthy, it's not comfortable, and durability suffers when we under-ventilate.
It's also the root cause of many odorrelated problems we hear about with
spray foam. Odors are not necessarily
the fault of the foam, but of poor ventilation in the house causing the customer complaint."
Spray foam workers partnering with
HVAC contractors should work together
to calculate proper equipment size and
an appropriate ventilation strategy. If the
HVAC contractor is not engineering and
installing ventilation, Sheldon said, he's
in violation of the building code.
"Unfortunately, code officials in
some areas don't know the ventilation
requirement in the code even exists,"
he said. Code officials do the best they
can to keep houses safe, but there are a
multitude of codes to keep up with and
some inspectors aren't well versed in
mechanical ventilation requirements.
"It's up to us as an industry, and by
'us' I mean HVAC and insulation and airsealing contractors, to understand the
durability enhancement we're responsible for, the indoor air quality we're
responsible for, and the general health of
the building and its occupants we affect
when we install our building envelope
and climate control systems." o


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Table of Contents for the Digital Edition of SPRAYFOAM Professional - Summer 2017

Sprayfoam 2017 Wrap Up
How SPF and Hvac Contractors Should Work Together
Bringing Spray Foam to Social Media
2017 SPFA Contractor Awards
California STSC Announces Next Regulatory Stage for SPF
Engaged Employees Make or Break Your Business
Ask the Expert
Executive Director’s Corner
President’s Post
Foam Business News
SPFA Today – Membership News & Numbers
Legislative Update
Calendar of Events
Index of Advertisers | Advertisers.com
SPRAYFOAM Professional - Summer 2017 - Intro
SPRAYFOAM Professional - Summer 2017 - cover1
SPRAYFOAM Professional - Summer 2017 - cover2
SPRAYFOAM Professional - Summer 2017 - 3
SPRAYFOAM Professional - Summer 2017 - 4
SPRAYFOAM Professional - Summer 2017 - 5
SPRAYFOAM Professional - Summer 2017 - 6
SPRAYFOAM Professional - Summer 2017 - Executive Director’s Corner
SPRAYFOAM Professional - Summer 2017 - 8
SPRAYFOAM Professional - Summer 2017 - President’s Post
SPRAYFOAM Professional - Summer 2017 - 10
SPRAYFOAM Professional - Summer 2017 - 11
SPRAYFOAM Professional - Summer 2017 - Foam Business News
SPRAYFOAM Professional - Summer 2017 - 13
SPRAYFOAM Professional - Summer 2017 - SPFA Today – Membership News & Numbers
SPRAYFOAM Professional - Summer 2017 - 15
SPRAYFOAM Professional - Summer 2017 - Sprayfoam 2017 Wrap Up
SPRAYFOAM Professional - Summer 2017 - 17
SPRAYFOAM Professional - Summer 2017 - 18
SPRAYFOAM Professional - Summer 2017 - 19
SPRAYFOAM Professional - Summer 2017 - Legislative Update
SPRAYFOAM Professional - Summer 2017 - 21
SPRAYFOAM Professional - Summer 2017 - 22
SPRAYFOAM Professional - Summer 2017 - 23
SPRAYFOAM Professional - Summer 2017 - How SPF and Hvac Contractors Should Work Together
SPRAYFOAM Professional - Summer 2017 - 25
SPRAYFOAM Professional - Summer 2017 - 26
SPRAYFOAM Professional - Summer 2017 - 27
SPRAYFOAM Professional - Summer 2017 - 28
SPRAYFOAM Professional - Summer 2017 - 29
SPRAYFOAM Professional - Summer 2017 - 30
SPRAYFOAM Professional - Summer 2017 - Bringing Spray Foam to Social Media
SPRAYFOAM Professional - Summer 2017 - 32
SPRAYFOAM Professional - Summer 2017 - 33
SPRAYFOAM Professional - Summer 2017 - 2017 SPFA Contractor Awards
SPRAYFOAM Professional - Summer 2017 - 35
SPRAYFOAM Professional - Summer 2017 - 36
SPRAYFOAM Professional - Summer 2017 - 37
SPRAYFOAM Professional - Summer 2017 - California STSC Announces Next Regulatory Stage for SPF
SPRAYFOAM Professional - Summer 2017 - Engaged Employees Make or Break Your Business
SPRAYFOAM Professional - Summer 2017 - 40
SPRAYFOAM Professional - Summer 2017 - Ask the Expert
SPRAYFOAM Professional - Summer 2017 - Index of Advertisers | Advertisers.com
SPRAYFOAM Professional - Summer 2017 - cover3
SPRAYFOAM Professional - Summer 2017 - cover4
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