©2008 Pella Corporation
Part Number: 801U0102
INSTALLATION INSTRUCTION – INSTRUCCIONES DE INSTALACION
FOR CLAD FIXED FRAME AND CIRCLEHEAD WINDOWS
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Always read the Pella® Limited Warranty before purchasing or installing Pella
products. By installing this product, you are acknowledging that this Limited
Warranty is part of the terms of the sale. Failure to comply with all Pella installation and maintenance
instructions may void your Pella product warranty. See Limited Warranty for complete details at
Installation Instructions for Typical Wood Frame Construction.
These instructions were developed and tested for use with typical wood frame wall construction
in a wall system designed to manage water. These instructions are not to be used with any
other construction method. Installation instructions for use with other construction methods,
multiple units or bow and bay windows, may be obtained from Pella Corporation, a local Pella
materials, and site conditions unique to your project may require an installation method
different from these instructions and additional care. Determining the appropriate installation
method is the responsibility of you, your architect, or construction professional.
YOU WILL NEED TO SUPPLY:
TOOLS REQUIRED:
s 4APE MEASURE
s ,EVEL
s #EDAR OR )MPERVIOUS SHIMSꢀSPACERS ꢁꢂꢃ TO ꢃꢄ
s ꢃꢅ GALVANIZED ROOlNG NAILS ꢁꢂꢀꢆ LBꢇ
s #LOSED CELL FOAM BACKER RODꢀSEALANT BACKER ꢁꢂꢃ TO ꢈꢄ FTꢇ
s 0ELLA® SmartFlash™ foil backed butyl window and
door flashing tape or equivalent
s 3QUARE
s (AMMER
s (IGH QUALITY EXTERIOR GRADE POLYURETHANE OR
SILICONE SEALANT ꢁꢂ TUBE PER WINDOW
4&"-"/5
s 3TAPLER
s 'REAT 3TUFF ™ Window and Door Insulating Foam Sealant
by the Dow Chemical Company or equivalent low pressure
polyurethane window and door foam - DO NOT use high
PRESSURE OR LATEX FOAMS
s 3CISSORS OR UTILITY KNIFE
s 3EALANT GUN
s )NTERIOR TRIM ANDꢀOR JAMB EXTENSIONS ꢁꢂꢉ TO ꢆꢄ FTꢇ
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SETTING AND FASTENING THE WINDOW
2
A. Install and level sill spacers. 0LACE ꢂꢅ WIDE BY ꢈꢀꢋꢅ THICK SPACERS
ON THE BOTTOM OF THE WINDOW OPENING ꢂꢀꢃꢅ FROM EACH SIDEꢇ 3PACERS
are also required at points where windows are joined in multiple
window applications. Add shims as necessary to ensure the
spacers are level. Once level, attach spacers and shims to prevent
movement.
Óꢀ
Note: Improper placement of shims or spacers may result in
bowing the bottom of the window.
B. Remove plastic wrap and cardboard packaging from window.
Note: If grilles are removed from the window at this time, label them and store them in a
protected area.
C. Fold out installation fin to 90°. /N UNITS WITH PREꢌAPPLIED lN CORNERSꢍ BE CAREFUL NOT TO
REMOVE OR TEAR THE lN CORNERSꢇ
Note: If the fin is not at 90°, the window will not line up correctly on the interior.
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D. Insert the window from the exterior of the building. Place the bottom of the window on
the spacers at the bottom of the opening, then tilt the top into position. Center the window
BETWEEN THE SIDES OF THE OPENING TO ALLOW CLEARANCE FOR SHIMMINGꢍ AND INSERT ONE ROOlNG NAIL
IN THE lRST HOLE FROM THE CORNER ON EACH END OF THE TOP NAILING lNꢇ 4HESE ARE USED TO HOLD THE
window in place while shimming it plumb and square.
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E. Plumb and square window. 0LACE SHIMS ꢂꢅ
from the bottom and top of the window between
the window and the sides of the opening. Adjust
the shims as required to plumb and square the
window in the opening. If the frame height
EXCEEDS ꢉꢈꢅꢍ PLACE SHIMS AT THE MIDPOINT
of the window sides.
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Note: DO NOT shim above the
window or in the space between
the spacers at the bottom of the
window. DO NOT over shim.
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F. Check the interior reveal. Make sure the
measurement from the interior face of the
window to the interior face of the wall is
equal at several points around the window.
Note: If the dimensions are not equal,
check to make sure the fins are folded out
to 90˚ at all points.
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'ꢇ Fasten the window to opening. /N WINDOWS WITH A lXED
Óꢄ
EXTRUDED lNꢍ DRILL ꢂꢀꢋ DIAMETER HOLES IN THE lN EVERY ꢂꢃꢅꢇ
(ꢇ Drive a 2" galvanized roofing nail into each of the pre-punched and pre-drilled holes.
For flexible fin: $RIVE NAILS UNTIL THE HEAD CONTACTS THE lNꢍ HOWEVER DO NOT SINK THE HEADꢇ
This allows for movement of building materials.
Note: Make sure all fin corners are lying as flat as possible.
INTEGRATING THE WINDOW TO
THE WATER RESISTIVE BARRIER
A. Units that do not have pre-applied fin corners: #UT FOUR PIECES OF mASHING TAPE ꢂꢌꢂꢀꢃꢅ LONGꢇ
!PPLY ONE PIECE OF mASHING TAPE TO EACH END OF THE SILL lN SO THAT IT EXTENDS ꢂꢌꢂꢀꢃꢅ PAST THE
END OF THE SILL lNꢇ !PPLY ONE PIECE OF
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flashing tape to the bottom end of
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EACH mEXIBLE lNꢍ BEGINNING ꢂꢌꢂꢀꢃꢅ
FROM THE END OF THE lNꢍ AND LAPPING
OVER THE mASHING TAPE THAT EXTENDS
FROM THE END OF THE SILL lNꢇ
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B. Apply side flashing tape. #UT TWO PIECES OF mASHING TAPE ꢆꢅ
longer than the frame height of the window. Apply one piece
ꢂꢀꢃꢅ UP ONTO THE FRAME CLADDING OVER THE NAILING lN AND ONTO
THE WATER RESISTIVE BARRIER TO EACH SIDEꢇ 4HE TAPE SHOULD EXTEND
ꢃꢅ ABOVE THE TOP OF THE WINDOW AND ꢃꢅ BELOW THE BOTTOM OF
THE WINDOWꢇ 0RESS THE TAPE DOWN lRMLY WHILE FOLDING DOWN THE
EXCESS TAPE AT THE TOP AND BOTTOM OF THE WINDOWꢇ
Note: DO NOT tape or seal the bottom nailing fin.
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C. Apply top flashing tape. Cut a piece of
flashing tape long enough to go across the
TOP OF THE WINDOW AND EXTEND AT LEAST ꢂꢅ PAST
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the side flashing tape on both sides. Apply
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THE TAPE ꢂꢀꢃꢅ UP ONTO THE FRAME CLADDING
OVER THE TOP NAILING lN AS SHOWNꢇ &OLD THE
overlapping tape down, and press all tape
DOWN lRMLYꢇ
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#ꢂꢇ Apply top flashing tape to circle top windows. Several pieces of flashing tape will be needed
TO COVER THE TOP lNꢇ 3TART TAPING FROM THE SIDES OF THE WINDOW WORKING TOWARD THE PEAKꢇ 4O
determine the length of cuts, hold the tape along the radius, and cut the tape just past where it
LEAVES THE TOP lXED EXTRUDED lN OR FOR THE mEXIBLE lNꢍ JUST PAST THE mEXIBLE WEATHER STRIPꢇ 4HE
top tape must overlap the one beneath it in order to divert water properly. The sharper the arc
of the window, the shorter the pieces of tape will be.
#ꢃꢇ Apply top flashing tape to an angle top window 1/2" up
onto the frame cladding, over the top fin onto the sheathing.
/N THE SHORT SIDE OF A TRAPEZOID WINDOWꢍ DO NOT ALLOW THE SIDE
mASHING TAPE TO EXTEND HIGHER THAN WHAT THE TOP TAPE WILL COVERꢇ
&OLD THE OVERLAPPING TAPE DOWNꢍ AND PRESS ALL TAPE DOWN lRMLYꢇ
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D. Fold down top flap of water resistive barrier (3D).
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E. Apply flashing tape to diagonal cuts. Cut pieces of
mASHING TAPE AT LEAST ꢂꢅ LONGER THAN THE DIAGONAL CUTS
in the water resistive barrier. Apply the tape covering
the entire diagonal cut in the water resistive barrier
at both upper corners of the window. If vertical
cuts were also made, apply flashing tape to
them in the same manner.
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Note: The top tape must overlap the tape
below it to divert water properly. Be sure
to overlap the top corners (3D).
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INTERIOR SEAL
4
Caution: Ensure use of low pressure polyurethane window and door insulating foams
and strictly follow the foam manufacturer’s recommendations for application. Use of high
pressure foams or improper application of the foam may cause the window frame to bow and
hinder operation.
A. Apply insulating foam sealant. From the interior, insert the
NOZZLE OF THE APPLICATOR APPROXIMATELY ꢂꢅ DEEP INTO THE SPACE
BETWEEN THE WINDOW AND THE ROUGH OPENING AND APPLY A ꢂꢅ
DEEP BEAD OF FOAMꢇ 4HIS WILL ALLOW ROOM FOR EXPANSION OF THE
FOAM AND WILL MINIMIZE SQUEEZE OUTꢇ )F USING FOAM OTHER THAN
'REAT 3TUFF™ Window and Door Insulating Foam Sealant
by the Dow Chemical Company, allow the foam to cure
COMPLETELY ꢁUSUALLY ꢋ TO ꢃꢆ HOURS BEFORE PROCEEDING TO THE
NEXT STEPꢇ
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Note: DO NOT completely fill the space from the back of
the fin to the interior face of the opening.
SEALING THE WINDOW TO THE
EXTERIOR WALL CLADDING
When applying siding, brick veneer or other exterior finish material, leave adequate space
between the window frame and the material for sealant. Refer to the illustration that
corresponds to your finish material.
5
Note: The sealant details shown are standard recommendations from the sealant industry.
Contact your sealant supplier for recommendations and instructions for these and any
other applications.
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A. Insert closed cell foam backer rod into the space around the
WINDOW SO THERE IS APPROXIMATELY ꢈꢀꢋꢅ CLEARANCE BETWEEN THE
BACKER ROD AND THE EXTERIOR FACE OF THE WINDOWꢇ
Note: Backer rod adds shape and depth for the sealant line.
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B. Apply a bead of high quality exterior grade sealant to
the entire perimeter of the window.
Note: For wood siding applications, when using
the flexible fin, ensure the sealant bead covers the
exterior edge of the fin weather-strip.
C. Shape, tool and clean excess sealant. 7HEN lNISHEDꢍ
the sealant should be the shape of an hourglass.
Note: This method creates a more flexible sealant
line capable of expanding and contracting.
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INTERIOR FINISHING
)F PRODUCTS CANNOT BE lNISHED IMMEDIATELYꢍ COVER WITH CLEAR PLASTIC TO PROTECT FROM DIRTꢍ DAMAGE
AND MOISTUREꢇ 2EMOVE ANY CONSTRUCTION RESIDUE BEFORE lNISHINGꢇ 3AND ALL WOOD SURFACES LIGHTLY
WITH ꢂꢋꢄ GRIT OR lNER SANDPAPERꢇ $/ ./4 USE STEEL WOOLꢇ "% #!2%&5, ./4 4/ 3#2!4#(
4(% ',!33ꢇ 2EMOVE SANDING DUSTꢇ
0ELLA PRODUCTS MUST BE lNISHED PER THE BELOW INSTRUCTIONSꢎ FAILURE TO FOLLOW THESE INSTRUCTIONS
voids the Limited Warranty.
s /N CASEMENT AND AWNINGSꢍ IT IS OPTIONAL TO PAINTꢍ STAIN OR lNISH THE VERTICAL AND HORIZONTAL SASH
edges.
s /N SINGLEꢌHUNG AND DOUBLEꢌHUNGꢍ DO NOT PAINTꢍ STAIN OR lNISH THE VERTICAL SASH EDGESꢍ ANY lNISH
ON THE VERTICAL SASH EDGES MAY CAUSE THE SASH TO STICKꢎ IT IS OPTIONAL TO PAINTꢍ STAIN OR lNISH THE
HORIZONTAL SASH EDGESꢇ
s /N PATIO DOORSꢍ IT IS OPTIONAL TO PAINTꢍ STAIN OR lNISH THE VERTICAL AND HORIZONTAL PANEL EDGESꢇ
Note: To maintain proper product performance do not paint, finish or remove the weather-
stripping, mohair dust pads, gaskets or vinyl parts. Air and water leakage will result if these
parts are removed. After finishing, allow venting windows and doors to dry completely before
closing them.
0ELLA #ORPORATION IS NOT RESPONSIBLE FOR INTERIOR PAINT AND STAIN lNISH IMPERFECTIONS FOR ANY
PRODUCT THAT IS NOT FACTORYꢌAPPLIED BY 0ELLA #ORPORATIONꢇ 5SE OF INAPPROPRIATE lNISHESꢍ SOLVENTSꢍ
brickwash, or cleaning chemicals will cause adverse reactions with window and door materials and
voids the Limited Warranty.
&OR ADDITIONAL INFORMATION ON lNISHING SEE THE 0ELLA /WNERgS -AUAL OR GO TO www.pella.com.
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Additional cutting patterns
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EXTERIOR FINISH
4HE EXTERIOR FRAME AND SASH ARE PROTECTED BY ALUMINUM CLADDING WITH OUR %NDURA#LAD® or
%NDURA#LAD 0LUS BAKEDꢌON FACTORY lNISH THAT NEEDS NO PAINTINGꢇ #LEAN THIS SURFACE WITH MILD
soap and water. Stubborn stains and deposits may be removed with mineral spirits. DO NOT
use abrasives. DO NOT scrape or use tools that might damage the surface.
5SE OF INAPPROPRIATE lNISHESꢍ SOLVENTSꢍ BRICKWASH OR CLEANING CHEMICALS WILL CAUSE ADVERSE
reactions with window and door materials and voids the Limited Warranty.
CARE AND MAINTENANCE
Care and maintenance information is available in the Pella Owner’s Manual. You can obtain
an owner’s manual by contacting your local Pella retailer. This information is also available
IMPORTANT NOTICE
"ECAUSE ALL CONSTRUCTION MUST ANTICIPATE SOME WATER INlLTRATIONꢍ IT IS IMPORTANT THAT THE WALL
system be designed and constructed to properly manage moisture. Pella Corporation is not
RESPONSIBLE FOR CLAIMS OR DAMAGES CAUSED BY ANTICIPATED AND UNANTICIPATED WATER INlLTRATIONꢎ
DElCIENCIES IN BUILDING DESIGNꢍ CONSTRUCTION AND MAINTENANCEꢎ FAILURE TO INSTALL 0ELLA PRODUCTS IN
ACCORDANCE WITH 0ELLAꢏS INSTALLATION INSTRUCTIONSꢎ OR THE USE OF 0ELLA PRODUCTS IN WALL SYSTEMS WHICH
do not allow for proper management of moisture within the wall systems. The determination
of the suitability of all building components, including the use of Pella products, as well as the
design and installation of allow for proper management of moisture within the wall systems. The
determination of the suitability of all building components, including the use of Pella products,
as well as the design and installation of flashing and sealing systems are the responsibility of the
Buyer or User, the architect, contractor, installer, or other construction professional and are not
the responsibility of Pella.
Pella products should not be used in barrier wall systems which do not allow for proper
MANAGEMENT OF MOISTURE WITHIN THE WALL SYSTEMSꢍ SUCH AS BARRIER %XTERIOR )NSULATION AND &INISH
3YSTEMSꢍ ꢁ%)&3 ꢁALSO KNOWN AS SYNTHETIC STUCCO OR OTHER NONꢌWATER MANAGED SYSTEMSꢇ %XCEPT
IN THE STATES OF #ALIFORNIAꢍ .EW -EXICOꢍ !RIZONAꢍ .EVADAꢍ 5TAHꢍ AND #OLORADOꢍ Pella makes
no warranty of any kind on and assumes no responsibility for Pella windows and doors
installed in barrier wall systems. In the states listed above, the installation of Pella Products
in barrier wall or similar systems must be in accordance with Pella’s installation instructions.
0RODUCT MODIlCATIONS THAT ARE NOT APPROVED BY 0ELLA #ORPORATION WILL VOID THE ,IMITED 7ARRANTYꢇ
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