Pella Corporation	SEPT 2020
102 Main Street
Pella, Iowa  50219
Toll Free	(800) 54-PELLA
Phone		(641) 621-1000
Website	www.pella.com

	Product Guide Specification

Specifier Notes:  This product guide specification is written according to the Construction Specifications Institute (CSI) 3-Part Format, including MasterFormat, SectionFormat, and PageFormat, contained in The Project Resource Manual-- CSI Manual of Practice.

The section must be carefully reviewed and edited by the Architect to meet the requirements of the project and local building code.  Coordinate this section with other specification sections and the Drawings.  Delete all “Specifier Notes” when editing this section.

Section numbers are from MasterFormat 1995 Edition, with numbers from MasterFormat 2004 Edition in parentheses.  Delete version not required.	

	SECTION 08572 (08 54 13)

	FIBERGLASS DOUBLE-HUNG WINDOWS

Specifier Notes:  This section covers Pella® Impervia® double-hung windows.  Frame and sash are manufactured from Duracast®, a five-layer, pultruded-fiberglass material, reinforced with a Pella-patented interlocking mat.  Consult your local Pella representative for assistance in editing this section for the specific application.	

PART 1	GENERAL

1.1	SECTION INCLUDES

A.	Fiberglass double-hung windows.

1.2	RELATED SECTIONS

Specifier Notes:  Edit the following list of related sections as required for the project.  List other sections with work directly related to this section.  Verify section numbers and titles.	

A.	Section 07270 (07 27 00) - Air Barriers:  Water-resistant barrier.

B.	Section 07920 (07 92 00) - Joint Sealants:  Sealants and caulking.

1.3	REFERENCES

Specifier Notes:  List standards referenced in this section, complete with designations and titles.  This article does not require compliance with standards, but is merely a listing of those used.	

A.	American Architectural Manufacturers Association (AAMA):
1.	AAMA 502 - Voluntary Specification for Field Testing of Windows and Sliding Doors.
2.	AAMA 624 - Voluntary Performance Requirements and Test Procedures for Organic Coatings on Fiber Reinforced Thermoset Profiles.

B.	American Society for Testing and Materials (ASTM):
1.	ASTM C 1036 - Flat Glass.
2.	ASTM C 1048 - Heat-Treated Flat Glass--Kind HS, Kind FT Coated and Uncoated Glass.
3.	ASTM D 3656 - Insect Screening and Louver Cloth Woven from Vinyl-Coated Glass Yarns.
4.	ASTM E 283 - Rate of Air Leakage Through Exterior Windows, Curtain Walls and Doors Under Specified Pressure Difference Across the Specimen.
5.	ASTM E 547 - Water Penetration of Exterior Windows, Curtain Walls and Doors by Cyclic Static Air Pressure Differential.
6.	ASTM E 1105 –  Standard Test Method for Field Determination of Water Penetration of Exterior Windows, Doors, Skylights and Curtain Walls by Uniform Static Air Pressure Difference.

C.	Screen Manufacturers Association (SMA):
1.	SMA 1201 - Specifications for Insect Screens for Windows, Sliding Doors and Swinging Doors.

D.	Window and Door Manufacturers Association (WDMA):
1.	ANSI/AAMA/NWWDA 101/I.S.2 - Voluntary Specifications for Aluminum, Vinyl (PVC) and Wood Windows and Glass Doors.

1.4	PERFORMANCE REQUIREMENTS

Specifier Notes:  Performance ratings for Pella Impervia windows vary by product and size.  Current performance information is found in the Pella Impervia Architectural Design Manual at www.pellaadm.com on the Design Data pages of each product section.  Consult your local Pella representative for more information.	

A.	Windows shall meet Rating H―LC―PG[ _____ ] specifications in accordance with ANSI/AAMA/NWWDA 101/I.S.2/A440-08 or ANSI/AAMA/NWWDA 101/I.S.2/A440-11.

B.	Window Air Leakage, ASTM E 283:  Window air leakage when tested at 1.57 psf (25 mph) shall be 0.3 cfm/ft2 of frame or less.

C.	Window Water Penetration, ASTM E 547:  No water penetration through window when tested under static pressure of 4.5 psf (42 mph) after 4 cycles of 5 minutes each, with water being applied at a rate of 5 gallons per hour per square foot.

1.5	SUBMITTALS

A.	Submit in accordance with Division 1 requirements.

B.	Product Data:  Submit manufacturer's product data, including installation instructions.

Specifier Notes:  Delete the following sentence if shop drawings are not required.	

C.	Shop Drawings:  Submit manufacturer's shop drawings, indicating dimensions, construction, component connections and locations, anchorage methods and locations, hardware locations, and installation details.

Specifier Notes:  Delete the following sentence if samples are not required.	

D.	Samples:  Submit full-size or partial full-size sample of window illustrating glazing system, quality of construction, and color of finish.

1.6	QUALITY ASSURANCE

Specifier Notes:  Edit the following paragraph as required for inclusion of field testing.	

A.	Mockup:
1.	Provide sample installation for field testing window performance requirements and to determine acceptability of window installation methods.
2.	Approved mockup shall represent minimum quality required for the Work.

Specifier Notes:  Edit the following sentence as required for inclusion of the mockup.	

3.	Approved mockup shall [not] remain in place within the Work.

1.7	DELIVERY, STORAGE, AND HANDLING

A.	Delivery:  Deliver materials to site undamaged in manufacturer's or sales branch's original, unopened containers and packaging, with labels clearly identifying manufacturer and product name.  Include installation instructions.

B.	Storage:
1.	Store materials in accordance with manufacturer's instructions.
2.	Store materials off ground and under cover.
3.	Protect materials from weather, direct sunlight, and construction activities.

C.	Handling:  Protect materials and finish during handling and installation to prevent damage.

PART 2	PRODUCTS

2.1	MANUFACTURER

A.	Pella Corporation, 102 Main Street, Pella, Iowa 50219.  Toll Free (800) 54-PELLA.  Phone (641) 621-1000.  Website www.pella.com.

2.2	FIBERGLASS DOUBLE-HUNG WINDOWS

A.	Double-Hung Windows:  Pella Impervia.
1.	Factory-assembled window with sash installed in frame.
2.	Frame and Sash Material:  Duracast.  5-layer, pultruded-fiberglass material, reinforced with interlocking mat.

Specifier Notes:  Specify frame type.  Block frames can be used in new block walls or as replacement windows in pocket applications.  New construction frames have an integral pultruded-fiberglass fin on all four sides with mitered corners.  Flush-flange frames may be used when replacing windows in existing stucco walls.  The flush-flange frame seals to existing window frame to allow the replacement of existing windows without disturbing the stucco opening.	

B.	Frame:
1.	Type: [Block frame] [New construction frame] [Precision Fit frame].
2.	Interior and Exterior Frame: Pultruded, fiberglass composite [with foam inserts].
3.	Overall Frame Depth:  3 inches for Block frame and New Construction frame; 3-1/4 inches for Precision Fit frame.
4.	Nominal Wall Thickness of Fiberglass Members:  0.050 inch to 0.070 inch.
5.	Frame Corners:
a.	Mitered at head and jamb on 10 degree sill.
b.	Joined and bonded with nylon corner lock, with thermoset polyurethane adhesive and mechanically fastened.

1.	
Specifier Notes:  Include the following sentence when specifying block frames and flush-flange frames.	

6.	Jambs:  Factory-drilled, counter-bored, installation screw holes.

C.	Sash:
1.	Interior and Exterior Sash: Pultruded, fiberglass composite [with foam inserts]
2.	Lower Sash:  Lower sash vent, tilts for cleaning exterior glass.
3.	Upper Sash:  Upper sash vent, tilts for cleaning exterior glass.
4.	Sash Corners:
a.	Mitered.
b.	Bonded and sealed with injected thermoset polyurethane adhesive.

D.	Glazing:
1.	Float Glass:  ASTM C 1036, Quality 1.

Specifier Notes:  Tempered glass is optional for clear and Low-E coated with argon glazing.  Tempered glass is standard for obscure glazing.	

	a.	Tempered Glass:  ASTM C 1048.

Specifier Notes:  Specify glazing type. High-altitude glass is also available.	

2.	Type:  Tape-glazed, 11/16-inch thick, insulating glass, [clear [tempered]] [multi-layer Low-E coated with argon [tempered]] [obscure tempered].

E.	Weather Stripping:
1.	Vent Upper Sash:  Fin-type pile on jambs, top rail and stile.
2.	Vent Lower Sash:  Vinyl-wrapped foam at sill on frame and bottom rail.

2.3	OPTIONS

Specifier Notes:  The following paragraphs specify optional products.  Specify required options.  Consult your local Pella representative for more information.	

A.	Grilles:
1.	Insulating Glass:  Contain 3/4-inch, contoured, aluminum grilles between the glass.
2.	Finish:  Factory-finished.  Match window frame.

Specifier Notes:  If insect screens are not specified, delete ASTM D 3656 and SMA 1201 from Article 1.3 References in this section. 18/16 mesh is standard. Specify 18/18 mesh to designate InView™ screens.	

B.	Insect Screens:
1.	Compliance:  ASTM D 3656 and SMA 1201.
2.	Screen Cloth:  Half- or full-size with [black, vinyl-coated, 18/16 mesh] [Vinyl-coated 18/18 mesh], fiberglass screen cloth set in aluminum frame fitted to outside of window.
3.	Complete with necessary hardware.
4.	Screen Frame Finish:  Baked enamel.
a.	Color:  Match window exterior.

2.4	HARDWARE

A.	Balances:  Galvanized steel block-and-tackle balances.

B.	Lock:
1.	Type:  Self-aligning, cam-action lock.
2.	Windows 37 Inches Wide or Greater:  2 locks.
3.	Finish: [Match window finish] [satin nickel] [bright brass] [oil-rubbed bronze].

C.	Tilt Latches:
1.	Glass reinforced Nylon 6
2.	Integrated into sash corner
3.	Finish is matte gray

D.	Lower Sash Lift:  Integrated into Duracast checkrail.

E.	Upper Sash Lift: Color-in ABS Resin.

2.5	TOLERANCES

A.	Windows shall accommodate the following opening tolerances:
1.	Vertical Dimensions Between High and Low Points:  Plus 1/4-inch, minus 0 inch.
2.	Width Dimensions:  Plus 1/4-inch, minus 0 inch.
3.	Building Columns or Masonry Openings:  Plus or minus 1/4-inch from plumb.

2.6	FINISH

A.	Exterior and Interior Duracast Finish:  Factory-applied powder-coat paint, comply with AAMA 624.

Specifier Notes:  Specify one of the following two sentences. Option two, Dual color, is not available with integral nail fin.	

1.	Color:  [White] [Tan] [Brown] [Black] [Morning Sky Gray].
Dual-color: [Tan] [Brown] [Black] [Morning Sky Gray] exterior with White interior.

2.7	INSTALLATION ACCESSORIES

Specifier Notes:  Flashing/sealant tape is not used for flush-flange frame windows.	

A.	Flashing/Sealant Tape:  Pella SmartFlash.
1.	Aluminum-foil-backed butyl window and door flashing tape.
2.	Maximum Total Thickness:  0.013 inch.
3.	UV resistant.
4.	Verify sealant compatibility with sealant manufacturer.

B.	Interior Insulating-Foam Sealant:  Low-expansion, low-pressure polyurethane insulating 
	window and door foam sealant.

C.	Exterior Perimeter Sealant: “Pella Window and Door Installation Sealant” or equivalent high quality, multi-purpose sealant as specified in the joints sealant section.

Specifier Notes:  Specify one of the following installation accessories to attach the windows to the opening when specifying block frames.	

D.	Block Frame Installation Accessories: [Vinyl installation fin]  [Vinyl installation fin with head drip flashing]  [Offset vinyl installation fin]  [Installation clips]  [Installation screws for frame screw applications].

E.	Precision Fit Frame Installation Accessories: [Sill Adapter]  [1/4” Jamb Extension]  [Installation screws].

2.8	SOURCE QUALITY CONTROL

A.	Factory Testing:  Factory test individual standard operable windows for air infiltration in accordance with ASTM E 283, to ensure compliance with this specification.

PART 3	EXECUTION

3.1	EXAMINATION

A.	Examine areas to receive windows.  Notify Architect of conditions that would adversely affect installation or subsequent use.  Do not proceed with installation until unsatisfactory conditions are corrected.

3.2	INSTALLATION

A.	Install windows in accordance with manufacturer's instructions.

B.	Install windows to be weather-tight and freely operating.

C.	Maintain alignment with adjacent work.

D.	Secure assembly to framed openings, plumb and square, without distortion.

Specifier Notes: The following paragraph applies to windows installed using installation fins only.  If the windows are not being installed with installation fins, delete this paragraph.	

E.	Integrate window system installation with exterior water-resistant barrier using flashing/sealant tape.  Apply and integrate flashing/sealant tape with water-resistant barrier using watershed principles in accordance with window manufacturer's instructions.

F.	Place interior seal around window perimeter to maintain continuity of building thermal and air barrier using insulating-foam sealant.

G.	Seal window to exterior wall cladding with sealant and related backing materials at perimeter of assembly.

H.	Leave windows closed and locked.

3.3	FIELD QUALITY CONTROL

Specifier Notes:  Field testing is optional.  Delete Field Quality Control if field testing is not required.  If Field Quality Control is deleted, delete AAMA 502 from Article 1.3 References in this section.	

A.	Field Testing:  Field water testing shall be conducted in accordance with ASTM E1105 Test Procedure B. The test pressure shall be based on the maximum positive components and cladding design pressure. Utilizing the AAMA 502 field test reduction, the water test pressure is 10% of the maximum positive design pressure.

3.4	CLEANING

A.	Clean window frames and glass in accordance with Division 1 requirements.

B.	Do not use harsh cleaning materials or methods that would damage finish or glass.

C.	Remove labels and visible markings.

3.5	PROTECTION

A.	Protect installed windows to ensure that, except for normal weathering, windows will be without damage or deterioration at time of substantial completion.

END OF SECTION