[PPT] - THE VERMONT RESIDENTIAL ENERGY CODE 2015 WORKSHOP CONTENT T PowerPoint Presentation

SLIDE 1

THE VERMONT RESIDENTIAL ENERGY CODE 2015

SLIDE 2

WORKSHOP CONTENT

T

he E ne rg y Co de

Ba c kg ro und / Ove rvie w
Whic h b uilding s, whe n?
Ob lig a tio ns o f the b uilde r
Wha t’ s Re q uire d?
Ba sic Re q uire me nts
Pe rfo rma nc e Re q uire me nts
F

iling the Pa pe rwo rk

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SLIDE 3

TODAY’S PRESENTATION

Spo nso re d b y

L a Va lle y Building Supply

De live re d b y E ffic ie nc y Ve rmo nt

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SLIDE 4

MAJOR CHANGES FOR 2015

Co mplia nc e with Stre tc h c o de re q uire d fo r Ac t 250

pro je c ts

Ne w insula tio n re q uire me nts a nd pa c ka g e s
ASHRAE

62.2 o ptio n fo r ve ntila tio n

Ma ke up a ir re q uire me nts fo r e xha ust ho o ds
Air tig htne ss re duc e d fro m 5 to 3 ACH50
75% o f lig hts must b e hig h e ffic a c y

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SLIDE 5

THE LEGISLATION -- ACT 20 OF 1997 “RESIDENTIAL BUILDING ENERGY STANDARDS”

Ba se d o n I

nte rna tio na l E ne rg y Co nse rva tio n Co de

Pe rfo rma nc e -b a se d sta nda rd
So me Ve rmo nt-spe c ific a dditio ns/ e xe mptio ns
Se lf-c e rtific a tio n b y b uilde r
T

hre e -ye a r re visio n c yc le

Pub lic re vie w pro c e ss
2015 c o de a pplie s to a ll pro je c ts tha t sta rt

c o nstruc tio n o n o r a fte r Ma rc h 1, 2015

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SLIDE 6

WHICH BUILDINGS MUST COMPLY?

Ne w c o nstruc tio n, lo w-rise re side ntia l
One a nd two fa mily dwe lling s
Multifa mily ho using thre e sto rie s o r le ss
Do e s no t inc lude c o mme rc ia l b uilding s
But do e s inc lude re side ntia l pa rt o f mixe d-use
E

xisting lo w-rise re side ntia l b uilding s

Additio ns
Only the a dditio n ne e ds to c o nfo rm
Re no va tio ns, windo w & e q uipme nt re pla c e me nt

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SLIDE 7

ALTERATIONS & RENOVATIONS

Applie s to a dditio ns, a lte ra tio ns, re no va tio ns o r

re pa irs to a n e xisting b uilding , b uilding syste m o r po rtio n the re o f (una lte re d po rtio ns ne e d no t c o mply)

Applie s to c ha ng e o f unc o nditio ne d to c o nditio ne d

spa c e

Applie s to insula tio n pro je c ts
Re pla c e me nt windo ws must c o mply
Sto rm windo ws a nd g la ss re pla c e me nt e xe mpt

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SLIDE 8

ALTERATIONS & RENOVATIONS

Wa lls e xe mpt if c a vitie s a re no t e xpo se d o r if

the y a re a lre a dy full o f insula tio n

Re ro o fing e xe mpt unle ss she a thing o r insula tio n is

e xpo se d a nd c a vity is e mpty

Re pla c e me nt o f le ss tha n 50% o f lig ht fixture s

a nd re pla c e me nt o f b ulb & b a lla st in e xisting fixture s is e xe mpt

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SLIDE 9

LOG HOMES

Ve rmo nt c o de disting uishe s b e twe e n lo g ho me s

a nd e ve rything e lse

I

n g e ne ra l, lo g ho me s a re a llo we d to b e le ss e ffic ie nt

But the re a re mo re string e nt re q uire me nts fo r o the r pa rts o f

the b uilding to pa rtia lly ma ke up fo r the diffe re nc e

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SLIDE 10

EXEMPTIONS

E

xtre me lo w e ne rg y use

le ss tha n 1 wa tt pe r sq ua re fo o t pe a k lo a d
Mo b ile ho me s
T

itle VI , Na tio na l Ma nufa c ture d Ho using Co nstruc tio n & Sa fe ty Sta nda rds Ac t o f 1974

Site -c o nstruc te d c o mpo ne nts still must c o mply
Building s (o r a re a s) no t he a te d o r c o o le d
Hunting Ca mps
Histo ric b uilding s c a n a pply fo r e xe mptio n

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SLIDE 11

OWNER/BUILDER PROJECTS

Spe c ific a lly e xe mpte d fro m me e ting the te c hnic a l

re q uire me nts o f the c o de

Owne r must dire c t the de ta ils o f c o nstruc tio n,

inc luding e ne rg y ite ms, must live in the b uilding

Must do c a lc ula tio ns, c o mple te a nd file the

Owne r/ Builde r Disc lo sure Sta te me nt

Must disc lo se in writing to po te ntia l b uye rs b e fo re

purc ha se a nd sa le a g re e me nt

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SLIDE 12

LIABILITY

Ho me o wne r ma y ta ke c ivil a c tio n a g a inst

pe rso n c e rtifying b uilding

Da ma g e s ma y inc lude inc re a se d e ne rg y

c o sts a nd c o sts to b ring the b uilding into c o mplia nc e (a s we ll a s c o urt, a tto rne ys’ fe e s)

Cla ims must b e file d within six ye a rs

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SLIDE 13

THERMAL REQUIREMENTS

T

he ne xt fe w slide s o utline the the rma l re q uire me nts

f the ne w c o de
F
r a ve ra g e ho use s, insta lling the se le ve ls will me e t

the c o de

But the c o de re q uire s o ve ra ll pe rfo rma nc e , a nd

the re a re ma ny wa ys to g e t the re

So yo u c a n insta ll a sse mb lie s le ss e ffic ie nt tha n this,

b ut yo u ha ve to ma ke up fo r it so me whe re e lse in the b uilding , a nd yo u ha ve to use a me tho d tha t a c c o mmo da te s tha t tra de -o ff

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SLIDE 14

WINDOWS

F

e ne stra tio n (e xc e pt skylig hts)

Ma ximum 0.32 U-va lue (0.30 fo r lo g ho me s)
Skylig hts
Ma ximum 0.55 U-va lue
Gla zing a re a
Ma ximum 20%
Up to 15 sq ft o f g la zing a nd o ne do o r is e xe mpt

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Thermal Requirements

SLIDE 15

INSULATION

Ce iling s
Minimum R-49
F
r fla t c e iling s, R-38 de e me d to me e t R-49 if full he ig ht

unc o mpre sse d o ve r to p wa ll pla te

Slo pe d c e iling s OK

@ R-30 if no t mo re tha n 500 sq ft o r 20%

f c e iling a re a , whic he ve r is le ss
I

nsta lle r must c e rtify de ta ils, sig n, po st in c o nspic uo us lo c a tio n. De pth ma rke rs re q uire d fo r b lo wn a ttic s

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Thermal Requirements

SLIDE 16

INSULATION

Wo o d fra me wa lls
Minimum R-25
R-13 c a vity insula tio n plus R-10 insula te d she a thing de e me d

to c o mply.

Ma ss wa lls
Minimum R-15
R-20 re q uire d if mo re tha n ha lf o f the insula tio n is o n the

inte rio r

(L
g ho me s e xe mpt fro m wa ll R-va lue re q uire me nt)

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Thermal Requirements

SLIDE 17

INSULATION

F

lo o rs

Minimum R-30 (R-38 fo r lo g ho me s)
Minimum R-20 OK

if it fills the who le c a vity

Must ma inta in pe rma ne nt c o nta c t with unde rside o f

sub flo o r

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Thermal Requirements

SLIDE 18

INSULATION

Ba se me nt wa lls
Minimum R-15 c o ntinuo us o r R-20 c a vity
F

ro m to p o f wa ll to 10 ft b e lo w g ra de o r to b a se me nt flo o r, whic he ve r is le ss

E

xte rio r insula tio n must ha ve pro te c tive c o ve ring

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Thermal Requirements

SLIDE 19

INSULATION

Unve nte d c ra wl spa c e :
Minimum R-15 c o ntinuo us o r R-20 inte rio r c a vity
Pe rma ne ntly fa ste ne d to wa ll do wn to flo o r a nd the n

ve rtic a lly a nd/ o r ho rizo nta lly fo r a t le a st a n a dditio na l 24 inc he s

Must ha ve Cla ss I

va po r b a rrie r o n flo o r, a tta c he d to wa ll, se a ms ta pe d

No ve nts to o utside
Ve nte d c ra wl spa c e
I

nsula te flo o r a b o ve

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Thermal Requirements

SLIDE 20

INSULATION

Sla b e dg e
Minimum R-15 pe rime te r
F
ur fe e t hig h o r hig h + wide to ta l
He a te d sla b
Minimum R-15 unde rne a th c o ntinuo us
E

xpo se d e xte rio r insula tio n must ha ve a pro te c tive c o ve ring

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Thermal Requirements

SLIDE 21

WHAT’S REQUIRED?

Ba sic Re q uire me nts
Pe rfo rma nc e Re q uire me nts -- T

hre e Me tho ds

 “F

a st T ra c k” me tho d

 RE

Sc he c k So ftwa re

 Ho me E

ne rg y Ra ting

Ce rtific a tio n

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SLIDE 22

WHEN TO DO THE ANALYSIS

No t re q uire d until a fte r, b ut...
Sho uld de te rmine whe re yo u

sta nd b e fo re c o mmitting to a de sig n

Or e spe c ia lly, b e fo re fra ming &

b a c kfilling

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SLIDE 23

BASIC REQUIREMENTS

Air T

ig htne ss

Va po r Re ta rde r
Duc ts
T

he rmo sta ts

So lid F

ue l Applia nc e s

Ve ntila tio n & Co mb ustio n Air
Windo w U-va lue
Pipe I

nsula tio n

L

ig hting

E

q uipme nt Sizing

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SLIDE 24

AIR LEAKAGE

Air le a ka g e lo c a tio ns must b e se a le d
Applie s to le a ka g e po ints b e twe e n:
Co nditio ne d spa c e a nd o utside
Co nditio ne d a nd unc o nditio ne d spa c e s
T

e sting o ptio n

L

e ss tha n 3 ACH @ 50 Pa

E

ve rything o pe n e xc e pt c himne y da mpe rs, c o ntinuo usly

pe ra ting ve nt syste m, a djusta b le pa ssive ve nts
Visua l inspe c tio n o ptio n

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Basic Requirements

SLIDE 25

VISUAL AIR BARRIER INSPECTION

Co ntinuo us, dura b le a ir b a rrie r
Bre a ks o r jo ints in the a ir b a rrie r se a le d
Spa c e b e twe e n fe ne stra tio n ja mb s a nd fra ming

se a le d with minimum e xpa nding fo a m

All plumb ing a nd wiring pe ne tra tio ns sha ll b e se a le d

to the a ir b a rrie r

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Basic Requirements

SLIDE 26

VISUAL AIR BARRIER INSPECTION

Junc tio ns o f the fo unda tio n a nd sill pla te , sill pla te

a nd rim-b a nd, a nd rim b a nd a nd sub flo o r, a nd to ps

f wa lls se a le d
Whe n a ir pe rme a b le insula tio n is insta lle d a t the rim

jo ist, a dura b le , rig id inte rio r a ir b a rrie r sha ll b e insta lle d

Air b a rrie r sha ll b e insta lle d a t a ny e xpo se d e dg e o f

flo o r insula tio n.

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Basic Requirements

SLIDE 27

VISUAL AIR BARRIER INSPECTION

Duc t sha fts, utility pe ne tra tio ns, a nd flue sha fts
pe ning to e xte rio r o r unc o nditio ne d spa c e sha ll b e

a ir se a le d

Air se a ling sha ll b e pro vide d b e twe e n the g a ra g e

a nd c o nditio ne d spa c e s

E

xte rio r wa lls a dja c e nt to sho we rs a nd tub s sha ll ha ve a dura b le , rig id a ir b a rrie r se pa ra ting the e xte rio r wa ll fro m the sho we r a nd tub s

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Basic Requirements

SLIDE 28

VISUAL AIR BARRIER INSPECTION

Air b a rrie r e xte nds b e hind e le c tric a l o r

c o mmunic a tio n b o xe s o r a ir se a le d type b o xe s sha ll b e insta lle d o r c re a te d

Air b a rrie r sha ll b e insta lle d in c o mmo n wa ll

b e twe e n dwe lling units. Co mmo n wa lls sha ll b e se a le d a t junc tio ns with o utside wa lls a nd a t the to p pre ssure pla ne o f the ho use

HVAC re g iste r b o o ts tha t pe ne tra te b uilding

the rma l e nve lo pe sha ll b e se a le d to sub flo o r o r drywa ll

L
g ho me s ha ve the ir o wn c rite ria (I

CC-400)

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Basic Requirements

SLIDE 29

RECESSED LIGHTS

Must b e I

C (I nsula tio n Co nta c t) ra te d

Must b e a ir tig ht o r lo w le a ka g e fixture s
No pe ne tra tio ns b e twe e n the inside o f the re c e sse d fixture

a nd c e iling c a vity; se a le d o r g a ske te d to pre ve nt a ir le a ka g e

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Basic Requirements

SLIDE 30

ACCESS HATCHES

Ac c e ss do o rs must b e we a the rstrippe d a nd

insula te d to a le ve l e q uiva le nt to the insula tio n o n the surro unding surfa c e s.

Ac c e ss must b e pro vide d to a ll e q uipme nt tha t

pre ve nts da ma g ing o r c o mpre ssing the insula tio n.

A wo o d fra me d o r e q uiva le nt b a ffle o r re ta ine r is

re q uire d whe n lo o se fill insula tio n is insta lle d.

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Basic Requirements

SLIDE 31

VAPOR RETARDER

Cla ss I
r I

I (a luminum fo il, po ly, kra ft fa c ing ) re q uire d o n fra me wa lls

E

xc e pt b a se me nt wa lls & b e lo w g ra de wa lls

Cla ss I

I I (pa int) a llo we d if:

Ve nte d c la dding o ve r fib e rb o a rd o r g ypsum
I

nsula te d she a thing R-7.5 o n 2x4 wa ll

I

nsula te d she a thing R-11.25 o n 2x6 wa ll

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Basic Requirements

SLIDE 32

DUCTS

Duc ts o utside the rma l e nve lo pe must b e insula te d

to the sa me R-va lue a s re q uire d fo r imme dia te ly a dja c e nt surfa c e s

All duc ts must b e a ir se a le d
Ca n’ t use b uilding c a vitie s a s supply duc ts. Ma y b e

use d a s re turn duc ts, b ut o nly inte rio r c a vitie s

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Basic Requirements

SLIDE 33

DUCTS

I

f a ir ha ndle r o r a ny duc two rk is lo c a te d o utside c o nditio ne d spa c e , duc ts must b e te ste d a nd ha ve :

L

e ss tha n 4 CF M@ 25 Pa le a ka g e to o utdo o rs pe r 100 sq ft o f c o nditio ne d flo o r a re a (po stc o nstruc tio n), o r

L

e ss tha n 3 CF M@ 25 Pa to ta l le a ka g e pe r 100 sq ft o f c o nditio ne d flo o r a re a (ro ug h-in)

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Basic Requirements

SLIDE 34

HEATING CONTROLS

Pro g ra mma b le the rmo sta t re q uire d if furna c e , he a t

pump o r b o ile r

No t re q uire d fo r so lid fue l o r spa c e s se rve d b y

ra dia nt flo o rs

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Basic Requirements

SLIDE 35

COMBUSTION AIR FOR GAS & OIL

All c himne y-ve nte d g a s a nd o il a pplia nc e s

(Ca te g o ry l o r Ca te g o ry ll) must ha ve c o mb ustio n a ir a s spe c ifie d in the g a s a nd o il c o de s (NF PA 54 & 31), e ve n if tho se c o de s ha ve no t b e e n a do pte d in the lo c a l a re a .

All ne w ho me s a re “unusua lly tig ht c o nstruc tio n”

a s de fine d in the g a s & o il c o de s, so a ir must b e supplie d, re g a rdle ss o f the vo lume o f the spa c e

Also , ta king c o mb ustio n a nd dilutio n a ir fro m

a ttic s o r c ra wl spa c e s is spe c ific a lly pro hib ite d

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Basic Requirements

SLIDE 36

CHIMNEYS

All c himne y-ve nte d e q uipme nt must e sta b lish spill-

fre e dra ft within 2 minute s unde r wo rst-c a se c o nditio ns

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Basic Requirements

SLIDE 37

SOLID FUEL COMBUSTION

Must ha ve g a ske te d do o rs with c o mpre ssio n c lo sure
r c o mpre ssio n la tc h syste m
So lid fue l c o mb ustio n a ir must b e de live re d dire c tly

to the fire b o x (e xc e pt o lde r sto ve s whe re no t po ssib le )

Site -b uilt e xte rio r a ir inle t must me e t de ta ile d

insta lla tio n re q uire me nts

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Basic Requirements

SLIDE 38

MECHANICAL VENTILATION

Who le ho use ve ntila tio n
I

nc luding lo c a l e xha ust

Auto ma tic c o ntro ls
Minimum flo w ra te s
I

nsta lla tio n re q uire me nts

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Basic Requirements

SLIDE 39

HOW MUCH AIR?

T

wo wa ys to c o mply with c o de

Pre sc riptive
I

nsta ll re q uire d minimum ra te d c a pa c ity

Pe rfo rma nc e
Ha ve syste m te ste d

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Basic Requirements

SLIDE 40

MINIMUM RATED CAPACITIES

Number of Bedrooms Minimum Rated Capacity (CFM) Minimum Number of Fans (if not central system) 1 50 1 2 75 1 3 100 1 4 125 2 5 150 2 > 3000 sq ft 0.05 x sq ft 2

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Basic Requirements

SLIDE 41

PERFORMANCE TESTING

Me a sure d flo w must b e a t

le a st 15 CF M plus 15 pe r b e dro o m

2 b e dro o m – 45 CF

M

3 b e dro o m – 60 CF

M

4 b e dro o m – 75 CF

M

5 b e dro o m – 90 CF

M

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Basic Requirements

SLIDE 42

LOCAL VENTILATION

Ba thro o ms must ha ve e xha ust
50 CF

M c a pa c ity fo r inte rmitte nt

20 fo r c o ntinuo us
Ca n use the who le -ho use syste m o r a se pa ra te fa n
K

itc he n e xha usts o ve r 400 CF M must ha ve ma ke -up a ir

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Basic Requirements

SLIDE 43

NOISE

Quie t is impo rta nt
Or o c c upa nts will turn it o ff
E

q uipme nt within 4 fe e t o f lo uve rs, g rills o r o pe ning s must b e ra te d no mo re tha n 1.5 so ne s

Re mo te ly-mo unte d e q uipme nt must b e a c o ustic a lly

iso la te d fro m fra ming a nd iso la te d fro m duc ting b y sho rt (1-2 ft) runs o f insula te d fle x duc t

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Basic Requirements

SLIDE 44

CONTROLS

Co de re q uire s c o ntinuo us o pe ra tio n o r

a uto ma tic c o ntro l (no re lia nc e o n huma ns)

Co ntinuo us o pe ra tio n
Must ha ve la b e le d, re mo te ly-mo unte d switc h
No lo c a l wa y o f turning o ff
Auto ma tic Co ntro l
Must ha ve time r o r o the r fully a uto ma tic c o ntro l
Cra nk time rs, de humidista ts, switc he s no t a llo we d

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Basic Requirements

SLIDE 45

VENTILATION DUCTWORK

F

a n ho using s a nd inle t g rills must b e se a le d to c e iling o r wa ll

Duc t runs o ve r 8 fe e t must b e a smo o th wa ll

ma te ria l

Duc ts in unhe a te d lo c a tio ns must b e insula te d
F

a ns must b e c o nne c te d to duc ts with me c ha nic a l fa ste ne rs

Jo ints & c o nne c tio ns must b e a ir se a le d

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Basic Requirements

SLIDE 46

BATH FAN SELECTION

Must b e ra te d fo r “c o ntinuo us duty”
Must no t e xc e e d 50 wa tts
As liste d b y ma nufa c ture r
F

a n po we r o nly, no t lig hts, he a te r, e tc

F

a ns unde r 20 wa tts a va ila b le

Must b e no mo re tha n 1.5 so ne s
F

a ns unde r 1 so ne a va ila b le

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Basic Requirements

SLIDE 47

WINDOW EFFICIENCY

T

he a ve ra g e a re a -we ig hte d U-va lue o f windo ws ma y no t e xc e e d 0.32

Skylig hts ma y no t e xc e e d U-0.55

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Basic Requirements

SLIDE 48

HOT WATER PIPES

Me c ha nic a l syste m piping in unc o nditio ne d spa c e s

c a pa b le o f c a rrying fluids a b o ve 105 de g re e s F must b e insula te d to a minimum R-3

Applie s to spa c e he a ting pipe s o nly, no t do me stic

ho t wa te r

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Basic Requirements

SLIDE 49

LIGHTING EFFICIENCY

At le a st 75% o f lig hting fixture s must b e hig h-

e ffic ie nc y la mps

CF

L

r e q uiva le nt

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Basic Requirements

SLIDE 50

SYSTEM SIZING

He a t lo a d c a lc ula tio n must b e do ne
Ma nua l J o r o the r a ppro ve d me tho do lo g y
Air c o nditio ne rs a nd he a t pumps must no t b e
ve rsize d b y mo re tha n 15%
F

ue l-fire d a pplia nc e s must no t b e o ve rsize d b y mo re tha n 40%

Or use sma lle st a va ila b le unit

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Basic Requirements

SLIDE 51

WANNA SHORT BREAK?

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SLIDE 52

COMPLIANCE METHODS

“F a st T ra c k” Me tho d So ftwa re Me tho d Ho me E ne rg y Ra ting

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SLIDE 53

 FAST TRACK METHOD

Adva nta g e s
Simple st me tho d
Minima l c a lc ula tio ns
L
w c o st (do it yo urse lf)

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SLIDE 54

 FAST TRACK METHOD

Dra wb a c ks

L

e a st fle xib le , limite d type s o f ho me s

Gla zing a re a c a nno t e xc e e d 20% o f wa ll a re a
Ca nno t use fo r me ta l fra ming in e xte rio r wa lls
Must c o mply with c o nditio ns
Attic ha tc h insula te d e q ua l to a ttic flo o r
Ba se me nt wa ll insula tio n full-he ig ht
Spe c ifie d de pth fo r sla b , c ra wl spa c e insula tio n

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SLIDE 55

 FAST TRACK: PROCESS

Ca lc ula te g la zing pe rc e nt a re a F ind the rig ht F a st T ra c k ta b le fo r yo ur b uilding type Cho o se de sire d pa c ka g e Co mple te a nd file Ce rtific a te a fte r b uilding is finishe d

62

SLIDE 56

GLAZING PERCENTAGE

THE ONE MAIN CALCULATION FOR THE FAST TRACK METHOD

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124 perim x 18 (includes 2 band joists) = 2232 sq ft gross wall
16 windows x 15 sq ft = 240 sq ft
4 bmt windows x 4.5 sq ft = 18 sq ft
Total window area = 258 sq ft
258 / 2232 = .116, or 11.6%

36’ 26’ 18’

Fast Track Method

SLIDE 57

FOUNDATION INSULATION

F
r ta b le s, b a se me nt wa ll insula tio n must e xte nd

fro m the to p o f the wa ll to the flo o r

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Fast Track Method

SLIDE 58

CRAWLSPACE INSULATION

Ve nte d c ra wlspa c e :
T

he flo o r a b o ve a ve nte d c ra wlspa c e must b e insula te d

Must b e se pa ra te d fro m c o nditio ne d b a se me nt
Unve nte d c ra wlspa c e w/ wa ll insula tio n:
Wa ll insula tio n must g o fro m to p o f wa ll to a t le a st 12”

b e lo w g ra de

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Fast Track Method

SLIDE 59

CRAWLSPACE WALL INSULATION

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“a” must be 12” minimum (inside or

utside frost wall)

a

Fast Track Method

SLIDE 60

SLAB-ON-GRADE FLOORS

I

nsula tio n is re q uire d whe n to p o f sla b is:

At o r a b o ve g ra de
L

e ss tha n 12” b e lo w g ra de

I

nsula tio n re q uire me nt a pplie s to wa lk o ut po rtio n o f c o nditio ne d b a se me nt (inc lude s unhe a te d b a se me nt b e lo w a n uninsula te d flo o r)

I

nsula tio n de pth (o r to ta l o f de pth + width) must b e a t le a st 48”

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Fast Track Method

SLIDE 61

SLAB INSULATION--EXAMPLE 1

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“a” must be 48” (inside

r outside frost wall)

a

Fast Track Method

SLIDE 62

SLAB INSULATION--EXAMPLE 2

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a+b must total 48” (other configurations possible)

a b

Fast Track Method

SLIDE 63

FLOORS

I

f e xpo se d flo o r (o ve r o utdo o rs):

Ce iling R-va lue s a pply
I

f o ve r unc o nditio ne d spa c e (b a se me nt, c ra wl spa c e o r g a ra g e ):

F

lo o r R-va lue s a pply

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Fast Track Method

SLIDE 64

ATTIC INSULATION AT THE EAVES

T

a b le a ssume s diminishe d insula tio n a t e a ve s

R-49 re q uire d
I

f full R-va lue e xte nds to a b o ve o utside fa c e

f e xte rio r wa ll, o nly R-38 re q uire d

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Fast Track Method

SLIDE 65

RAISED TRUSS EXAMPLES

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Raised heel truss Rigid foam Raised rafter (engineered)

Fast Track Method

SLIDE 66

OTHER CONDITIONS FOR TABLES

1% o f windo w a re a a nd up to o ne do o r e xe mpt

fro m U-va lue re q uire me nts

Still must inc lude sq ua re fo o ta g e in g la zing pe rc e nta g e
Allo ws use o f de c o ra tive windo w o r do o r

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Fast Track Method

SLIDE 67

FAST TRACK TABLE

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Fast Track Method

SLIDE 68

FAST TRACK TABLE – STRETCH CODE

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SLIDE 69

 FAST TRACK: THINGS TO REMEMBER

Gla zing a re a pe rc e nt o f gr

ss wa ll a re a
Must a lso inc lude windo ws o f c o nditio ne d b a se me nt (e ve n

if the wa ll the y a re in is no t c o nsid e re d a b o ve -g ra de ) a nd skylig hts

F lo o rs o ve r o utside a ir use c e iling R-va lue Me e t c o nditio ns o f the ta b le

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Fast Track Method

SLIDE 70

SOFTWARE METHOD

Adva nta g e s

E

a sy to try va ria tio ns, upda te c ha ng e s

Re duc e s c a lc ula tio n time a nd e rro rs
Use fo r wide va rie ty o f de sig ns
Do -it-yo urse lf, with b a sic c o mpute r skills
Ge ne ra te s re po rt a uto ma tic a lly

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SLIDE 71

DEFINITION: BUILDING ENVELOPE

Co mpo ne nts tha t se pa ra te c o nditio ne d

spa c e s fro m o utdo o rs, o r fro m unc o nditio ne d spa c e s

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Sun room Basement 1st floor Garage 2nd fl

Software Method

SLIDE 72

MEASURING BUILDING COMPONENTS

Gro ss wa ll a re a : e xte rio r dime nsio ns, inc luding windo ws

a nd do o rs; inc luding b a nd jo ists b e twe e n insula te d wa lls. I nc lude s slo pe s within 30 de g re e s o f ve rtic a l.

Windo w, Skylig ht, Do o r: use ro ug h o pe ning size
Ba se me nt wa lls: T

re a t e a c h wa ll se pa ra te ly. F

r

c o nditio ne d b a se me nts, wa lls tha t a re mo stly a b o ve g ra de a re inc lude d with the o the r a b o ve -g ra de wa lls

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Software Method

SLIDE 73

BASEMENTS

Conditione d -- he a te d b a se me nt, o r unhe a te d

b a se me nt b e lo w a n uninsulate d flo o r:

F
unda tio n wa lls must b e insula te d
Duc ts a nd pipe s do no t ne e d insula tio n o r se a ling
Unc onditione d -- unhe a te d b a se me nt b e lo w a n

insulate d flo o r:

F
unda tio n wa lls ne e d no t b e insula te d
I

nsula te wa lls o f b a se me nt sta irs, sta irs to se c o nd flo o r

I

nsula te duc ts a nd pipe s

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Software Method

SLIDE 74

MEASURING CONDITIONED BASEMENTS

I

nc lude fo unda tio n wa lls tha t a re 50% o r mo re a b o ve g ra de with o the r e xte rio r wa lls

F
unda tio n wa lls tha t a re mo re tha n 50%

b e lo w g ra de , a re c o nside re d “b a se me nt wa lls” (lo we r R-va lue re q uire me nt)

I

f the b a se me nt is c o nditio ne d, inc lude a ll windo ws a nd do o r a re a s fro m b a se me nt wa lls

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Software Method

SLIDE 75

WALKOUT BASEMENT EXAMPLE

A, B a nd C a re “b a se me nt wa lls” (mo stly b e lo w g ra de )
D is a dde d to “g ro ss wa ll a re a ” a nd insula te d a s suc h
Sla b e dg e insula tio n is re q uire d fo r e xpo se d e dg e a t wa ll D

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Grade line Wall A Wall D (wood frame) Wall C Wall B

Software Method

SLIDE 76

86

SLIDE 77

 SOFTWARE METHOD: THINGS TO REMEMBER

Use g ro ss c e iling a nd wa ll a re a s Diffe re nt R-va lue s within the sa me c o mpo ne nt type a re e nte re d se pa ra te ly I nc lude a ll b a se me nt windo ws a nd do o rs in a c o nditio ne d b a se me nt E nte r a c c e ss ha tc he s a s se pa ra te a re a s if R-va lue is diffe re nt fro m surro unding a re a

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Software Method

SLIDE 78

 HOME ENERGY RATING

Adva nta g e s

Hig h de g re e o f fle xib ility
Ca lc ula tio ns do ne b y e ne rg y spe c ia list
Give s c re dit fo r a ir se a ling a nd pa ssive so la r g a ins (c a n b e

e a sie r to pa ss)

Dra wb a c ks

Co mple te b uilding de sig n re q uire d

Ca n pa y fo r the ra ting , b ut mo st a re do ne a s pa rt o f E ffic ie nc y Ve rmo nt’ s Re side ntia l Ne w Co nstruc tio n pro g ra m

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SLIDE 79

 HOME ENERGY RATING: PROCESS

Se nd in ske tc h o r pla ns with dime nsio ns, fill o ut she e t with insula tio n, he a ting pla ns Re vie w re po rt, de c ide o n a ny c ha ng e s T wo inspe c tio n, o ne pre -drywa ll, o ne upo n c o mple tio n F ina l re po rt inc lude s e ne rg y c o de c e rtific a te , fille d o ut a nd re a dy fo r sig na ture

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SLIDE 80

THE CERTIFICATE

Pro vide s:
De ta ils a b o ut the ho use
Builde r’ s wo rd tha t ho use

me e ts c o de

F

ill o ut & file

Po st in ho use , file with to wn,

c o py to sta te

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SLIDE 81

CERTIFICATION

Ce rtific a te s a re a va ila b le fro m E

ne rg y Co de Assista nc e Ce nte r; o the rs a re a c c e pta b le if sub sta ntia lly simila r

Must b e sig ne d a nd po ste d o n o r ne a r he a ting
r c o o ling e q uipme nt o r e le c tric a l se rvic e pa ne l
Co pie s must b e se nt to the De pa rtme nt o f

Pub lic Se rvic e , a nd re c o rde d in the to wn la nd re c o rds within 30 da ys o f c o mple tio n

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SLIDE 82

OWNER-BUILDER DISCLOSURE STATEMENT

Ve ry simila r to c e rtific a te
Must me e t c e rta in c o nditio ns to q ua lify
Owne r must a c tua lly b e in c ha rg e o f c o nstruc tio n
Owne r must live in b uilding
Owne r must disc lo se no n-c o mplia nc e (with de ta ils) to

po te ntia l b uye r, a nd file Owne r/ Builde r Disc lo sure Sta te me nt with DPS a nd to wn la nd re c o rds within 30 da ys o f sa le

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SLIDE 83

SUMMARY -- WHAT’S REQUIRED?

Ba sic Re q uire me nts
Pe rfo rma nc e Re q uire me nts -- T

hre e Me tho ds

 “F

a st T ra c k” Me tho d

 So ftwa re Me tho d  Ho me E

ne rg y Ra ting

Ce rtific a tio n

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SLIDE 84

RESOURCES

E

ffic ie nc y Ve rmo nt

Re side ntia l Ne w Co nstruc tio n pro g ra m
Ho me Pe rfo rma nc e with E

NE RGY ST AR

Ve rmo nt Gre e n Ho me Allia nc e
L

E E D fo r Ho me s, Ve rmo nt Builds Gre e ne r, Na tio na l Gre e n Building Sta nda rd, Pa ssive Ho use

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SLIDE 85

ENERGY CODE ASSISTANCE CENTER

I

nfo rma tio n o n pro duc ts a nd te c hniq ue s

Co pie s o f ha ndb o o k, c e rtific a te s, so ftwa re
Re fe rra ls to o the r pro g ra ms

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