September 26th and 27th, 2013

Ply Gem Industries

Zelman Housing Summit

LEGALDisclaimer

2

These slides and the accompanying oral discussion may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements involve known and unknown risks, uncertainties and other factors that could cause the actual results of the Company to differ materially from the results expressed or implied, including: downturns in the home repair and remodeling or the new construction end markets, or the economy or the availability of consumer credit; competition from other exterior building products manufacturers and alternative building materials; changes in the costs and availability of raw materials; consolidation and further growth of our customers; loss of, or a reduction in orders from, any of our significant customers; inclement weather conditions; increases in union organizing activity and work stoppages at our facilities or the facilities of our suppliers; our ability to employ, train and retain qualified personnel at a competitive cost; claims arising from the operations of our various businesses prior to our acquisitions; products liability claims, including class action claims, relating to the products we manufacture; loss of certain key personnel; interruptions in deliveries of raw materials or finished goods; environmental costs and liabilities; manufacturing or assembly realignments; threats to, or impairments of, our intellectual property rights; increases in fuel costs; material non-cash impairment charges; our significant amount of indebtedness; covenants in the ABL Facility and the indentures governing the 8.25% Senior Secured Notes and the 9.375% Senior Notes; failure to effectively manage labor inefficiencies associated with increased productions and new employees added to the company; failure to generate sufficient cash to service all of our indebtedness and make capital expenditures; limitations on our NOLs and payments under the tax receivable agreement to our current stockholders; failure to successfully consummate and integrate future acquisitions; actual or perceived security vulnerabilities or cyberattacks on our networks; control by the CI Partnerships; compliance with certain corporate governance requirements; certain of our directors’ relationships with the CI Partnerships; lack of a prior public market for our common stock and volatility of our stock price; future sales of our common stock in the public market; substantial dilution in net tangible book value; our dividend policy; provisions in our charter and by-laws; and failure to maintain internal controls over financial reporting. Consequently such forward-looking statements should be regarded as the Company’s current plans, estimates and beliefs. Except as required by law, the Company does not undertake and specifically declines any obligation to publicly release the results of any revisions to these forward-looking statements that may be made to reflect any future events or circumstances after the date of such statements or to reflect the occurrence of anticipated or unanticipated events.

3

REPAIR & REMODEL2

SIDINGWINDOWS

NEW RESIDENTIALCONSTRUCTION

2

59%41%

50% 50%

3

Leading exterior building and home improvement products company in North America

One of the Largest Manufacturers of Exterior Building and Home Improvement Products

~$1.41 Billion in sales~6,000 associates

U.S.93%

7%

CANADA

PLY GEM’sProfile

1 Pro forma for Gienow & Mitten acquisitions

2 Source: Management estimates

Aluminum Accessories

Western Canada

New Construction Vinyl and Aluminum Windows

Vinyl Siding#1

#1

#2

#2

Provider of branded products sold through many channels of distribution and covering price points across the depth of the market

#1 Post-recentacquisitions

4

MARKET Position Leading Manufacturer of Exterior Building

Products

• Mitten• Gienow

5

PRODUCTCategories

Gable vents and accessoriesGutter protection systemsVinyl and aluminum soffit

Window mantlesManufactured stone

Vinyl and designer accentsShutters

Mounting blocksDecorative corner posts

Rain removal systemsDoor surround systems

Patio doorsWindows

Railing and fencingComposite rail

Outdoor structures

New window technologyCellular PVC trim

Extensive Exterior Product Portfolio

Ply Gem5%

6

One, Integrated Business with Two Reportable Segments

Windows and DoorsSiding, Fencing and Stone

Window Market Share (All Types)Vinyl Siding Market Share

Ply Gem28%

CertainTeed31%

Associated Materials11%

KP7%

Crane4%

Royal5%

Heartland7%

Other7%

Ply Gem36%

CertainTeed27%

Associated Materials14%

Royal/Crane13%

Kaycan6%

Other4%

2008 2011

2007 2008 2009 2010 2011 2012$0

$200

$400

$600

$800

$1,000

(20.0%)(10.0%)0.0% 10.0% 20.0% 30.0% 40.0%

$535$466

$374 $392 $396 $463

Sales Operating earnings margin2007 2008 2009 2010 2011 2012

$0

$200

$400

$600

$800

$1,000

(20.0%)(10.0%)0.0% 10.0% 20.0% 30.0% 40.0%

$828$709

$577 $604 $639 $658

Sales Operating earnings margin

Note: 2008 operating earnings margins for both segments exclude goodwill impairments

PLY GEM’sSegments

Source: 2008 based upon the Principia Partners 2008 study; 2011based upon Management's estimate utilizing VSI data

Source: Management estimates1Based on WDMA

20111

• Andersen• Pella• JELD-WEN• Marvin• Atrium• Associated Materials• Milgard

Windows Manufacturers(all substrates)

7

SIDINGGroup

• #1 vinyl siding manufacturer in North America (with approx. 36% share in the US)

• Consolidated industry with 4 participants holding approx. 90% share

• Strong trade brands

• Multi-channel distribution network servicing both new construction and R&R

• State-of-the-art automated manufacturing facilities with capacity to support planned growth

Key Brands

North American Market Summary

Why We Win

$ millions

Market size: According to Principia Partners

Exterior Cladding Market Size

Vinyl Siding Market Size

Ply Gem 2012 Net Sales

$658

Market Leader in Vinyl Siding

~$1,800

~$5,300

Market Size Ply Gem 2012 Net Sales

$463

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WINDOWSGroup

• #2 vinyl & aluminum window manufacturer in the US

• #1 window & door manufacturer in Western Canada (post-acquisitions)

• Multi-channel distribution network servicing both new construction and R&R covering every price point

• Highly efficient, vertically integrated production

• Continued to gain market share during downturn

Why We Win Key Brands

North American Market Summary

$ millions

Market size: Company estimate – New construction and R&R

Leader in Vinyl and Aluminum Windows

~$9,000

9

GROWTHInnovation

A Key Growth Initiative

Open Innovation Opportunities

Furthering a Culture of Innovation

• Several businesses currently active in foundation labs

• Research concentration in advanced materials and physics

• Each Hi-Po serves on an Innovation project team

• Implemented innovation into Ply Gem’s compensation structure

• Product development and innovation continues to drive new sales

• Developed a collaboration platform and now measure engagement

• Drive collaboration to achieve significant cross-selling potential

• Improved platform for idea generation process

• Managing innovation as a business process through foundation labs

• Focus on supplier/partner/universities

• Prime relationship with two major building products companies in developing new business opportunities

Innovation Driving Exciting New Opportunities

$400+mm of incremental annual sales from new products introduced since 2009

New products

• Cellular PVC trim product

• New Glass Technology

• Composite building materials

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THE DESIGNEDExterior

• Provides differentiation for Ply Gem customers• Provides a single sourcing opportunity• Hits the sweet spot of an emerging trend• Features NAHB Green Approved products• Fulfills the “One Ply Gem” MISSION

Alexandria, VA Designed Exterior Remodel

BEFORE

Three Weeks later using The Designed Exterior concept

AFTER

Complete Exterior Solution Offering for Customers

Regional local one-step

distributors

Regional local one-step

distributors

DISTRIBUTION

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Multi-Channel Distribution Network Servicing a Broad Customer Base

New Construction

Regional/local one-step distributors

National one-stepdistributors

Retailers

Two-stepdistributors

Home Repair and Remodeling

• Homebuilders

• Contractors

• Contractors

• Individuals

Two-step distributors

Two-step distributors

National one-step distributors

National one-step distributors

RetailersRetailers

HomebuildersHomebuilders

Representative CustomersBuilding products supply chain

Sells Multiple Ply Gem Products

Diversity of channels and customers with limited customer concentration (Top 10 customers account for only ~46% of sales)

END-MARKETS

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Significant Opportunity to Capture Growth Related to Housing Market Recovery

New construction80%

Home repair & remodel

20%

Windows and Doors¹Siding, Fencing and Stone¹

New construction35%

Home repair & remodel

65%

New construction¹50%

Home repair & remodel¹50%

Ply

Gem

Mix

Hou

sing

Out

look

Home Improvement Product Sales² Single Family Housing Starts³

$319 bn$274 bn

2012 2015E

5.3% CAGR

¹ Source: Management estimates² Source: Home Improvement Research Institute, Sep 2012³ Source: U.S. Census Bureau

2005 2006 2007 2008 2009 2010 2011 2012 20150

500

1,000

1,500

2,000 1,719

1,474

1,036

616

442 471 434 535

Ply Gem

?

Gaining Share Throughout the Downturn, Poised for the Upturn

• Broad product offering at diverse price points with new construction and R&R exposure• Strong brand recognition and cross-selling opportunities• Introduction of new products (R&R windows, cellular PVC trim and mouldings)• National window platform against highly fragmented competition• Strong relationships with industry leading customers who continue to expand their business• Lag time between starts and product placement expanding due to labor shortages

Market share gains of over $350 million from 2007 to 2011¹

2007 2012

Single Family Housing Starts 1,036 535

% change (48.4%)

Ply Gem Net Sales $1,363.5 $1,121.3

% change (17.8%)

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OUTSIZEDGrowth

Note: Single family housing starts data from U.S. Census Bureau¹ Source: Management estimates

OPERATING Platform

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Facility Overview

Source: Company filings and management estimates

2012 Cost Structure (Net Sales – EBITDA)

Variable79%

Fixed21%

Materials54%

Variable Manufacturing18%

Freight & Other7%

Fixed21%

Highly Efficient, Flexible, Low Cost Operating Structure…

Vinyl = 20%

Aluminum = 13%

Other materials = 21%

Window MFG

Siding/Access MFG

Corporate/HQ

Canada Distribution

Stone MFG

Locations

10

62

3

34

1

58Total

Fence + Rail MFG

Gienow 1Mitten 1

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MGMTTeam

Gary E. RobinettePresident & CEO

Industry experience: 35 years

Shawn PoeVice President & CFO

23 years

John WayneExecutive Vice President & COO

28 years

Dave SchmollSenior Vice President, HR

24 years

Lee Clark-SellersInnovation Officer

20 years

Tim JohnsonGeneral Counsel

12 years

Proven Ability to Successfully Operate the Business Through Evolving Market Cycles

• Significant management equity ownership of 3.7% post -IPO

• Consistently outperformed the market

• Deep and proven management bench

Art SteinhafelPresident, U.S. Windows

20 years

Richard BoyerPresident, Ply Gem Canada /

Gienow14 years

John BuckleyPresident, Siding Group

22 years

Doug RendePresident, Mitten, Inc.

30 years

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STRATEGICEvolution

2012 2016to

A Market Leader The Market Innovator

A Ply Gem Brand The Leading Brand

Organic Growth (Market Share)Growth Through Strategic Acquisitions

Coordinated back office Lean through Technology

Executive Dev & Succession Our Future Leaders

New Products and Share New Channels and Markets

“Ply Gem’s Future”

Financial Overview

($ in millions)2011

Actual 2012

Actual

LTM Q2-13 Actual

YTD Q2-13 Actual

YTD Q2-12 Actual

Net Sales $1,034.9 $1,121.3 $1,200.1 $625.2 $546.5

Gross Profit 210.5 244.2 244.0 116.1 116.3

% Margin(1) 20.3% 21.8% 20.3% 18.6% 21.3%

Adjusted EBITDA 114.5 127.3 123.1 53.1 60.4% Margin 11.1% 11.4% 10.3% 8.5% 11.0%

Capex 11.5 24.6 27.9 11.4 8.1% of sales 1.1% 2.2% 2.3% 1.8% 1.5%

Debt (Bonds & ABL) 961.7 964.4 827.8Cash on hand 11.7 27.2 27.9Net Debt $950.0 $937.2 $799.9

Leverage Ratio 8.3x 7.4x 6.5x

FINANCIALSummary Summary YTD Q2-2013 Results

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FINANCIALSummary 2012 Net Sales = $1.1 Billion

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2007 2008 2009 2010 2011 2012Single Family Housing Starts 1,036 616 442 471 434 535

(29.7)% (40.5)% (28.2)% 6.5% (8.1)% 23.3%

Ply Gem Net Sales $1,363.5 $1,175.0 $951.4 $995.9 $1,034.9 $1,121.3

(13.4)% (13.8)% (19.0)% 4.7% 3.9% 8.4%

• Ply Gem continues to outperform the market• SFHS down 48% from ‘07 to ‘12, Ply Gem

down 17.8%• Market share gains of over $350 million from 2007 to

2011• Numerous new customer wins as Ply Gem is a clear

industry leader• Our product breadth and geographical footprint

continue to expand• Customer mix is well balanced at approx. 50%/50% 2007 2008 2009 2010 2011 2012

$600

$800

$1,000

$1,200

$1,400 Ply Gem sales

2005 2006 2007 2008 2009 2010 2011 2012 2013 ‘05 – ’12 Avg.

Q1 19.8% 20.0% 16.5% 11.9% 7.1% 18.1% 16.6% 17.9% 16.3% 16.0%

Q2 24.1% 23.9% 25.0% 20.0% 24.1% 23.4% 23.5% 23.9% 20.6% 23.5%

Q3 24.4% 23.6% 23.2% 19.1% 26.4% 23.2% 22.1% 23.1% 23.1%

Q4 22.2% 17.1% 18.1% 14.0% 22.5% 20.8% 20.6% 21.3% 19.6%

Full Year 22.8% 21.2% 20.6% 16.6% 21.2% 21.7% 21.0% 21.8% 20.9%

Ply Gem has demonstrated the ability to maintain profit margins through wide swings in commodity costs

2008 Rewind – Oil prices went to $148 a barrel; gas prices went to $4.00

2009 Includes one time “take or pay” aluminum buy

We demonstrated the ability to address commodity fluctuations and return to historical averages

(1) 2011 & 2013 Gross Margins adjusted to exclude the impact of the one-time Home Depot buy-back

FINANCIALSummary Stable Gross Profit Margins

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2005 2006 2007 2008 2009 2010 2011 (1) 2012 20130%

5%

10%

15%

20%

25%

30% Q1 Q2 Q3 Q4

Impact of "Take orPay" Contract

2007 2008 2009 2010 2011 2012$0

$20

$40

$60

$80

$100

$120

$140

$160

$180

$200

0%

2%

4%

6%

8%

10%

12%

14%

16%

• Superior EBITDA Margins despite historically low demand• Sales that outperformed the market including new products• Cost reduction actions have generated over $45 million in savings:

Closed 6 plants over last 5 years = approx. $30 million annual savings Reduced headcount by approximately 50% from 2006 to 2010 Other cost reduction initiatives (Direct & Indirect) over $10 million

• Market share wins of over $350 million from 2007 to 2011• Successful acquisition integration and cost savings realization• Managed Capital Spending & Working Capital to enhance cash flow

FINANCIALSummary Adjusted EBITDA 2012 = $127.3M or 11.3%

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Fiscal Year Ended December 31, ($ in millions) 2007 2008 2009 2010 2011 2012Single Family Housing Starts 1,036 616 442 471 434 535 Net Sales

Siding, Fencing and Railing $828.1 $709.4 $577.4 $604.4 $639.3 $658.0 % Growth (17.4%) (14.3%) (18.6%) 4.7% 5.8% 2.9%

Windows and Doors 535.4 465.6 374.0 391.5 395.6 463.3 % Growth (6.6%) (13.0%) (19.7%) 4.7% 1.0% 17.1%

Total Ply Gem $1,363.5 $1,175.0 $951.4 $995.9 $1,034.9 $1,121.3 % Growth (13.4%) (13.8%) (19.0%) 4.7% 3.9% 8.4%

Gross ProfitSiding, Fencing and Railing $168.7 $130.6 $149.4 $155.5 $158.8 $180.2

% Margin 20.4% 18.4% 25.9% 25.7% 24.8% 27.4% Windows and Doors 111.7 64.3 52.2 60.6 51.7 64.0

% Margin 20.9% 13.8% 14.0% 15.5% 13.1% 13.8% Total Gross Profit $280.4 $194.9 $201.5 $216.0 $210.5 $244.2

% Margin 20.6% 16.6% 21.2% 21.7% 20.3% 21.8% Reported Adjusted EBITDA $176.0 $96.1 $116.2 $123.1 $114.5 $127.3

% Margin 12.9% 8.2% 12.2% 12.4% 11.1% 11.3% CapEx $20.0 $16.6 $7.8 $11.1 $11.5 $24.6

% of Sales 1.5% 1.4% 0.8% 1.1% 1.1% 2.2%

FINANCIALSummary

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2007 PF for run-rate acquisitions > $200mm

23

FINANCIALSummary

Fiscal Year Ended December 31,

($ in millions) 2007 2012

Single Family Housing Starts 1,036 535

Net Sales

Siding, Fencing and Railing $828.1 $658.0

% Growth (17.4%) 2.9%

Windows and Doors 535.4 463.3

% Growth (6.6%) 17.1%

Total Ply Gem $1,363.5 $1,121.3

% Growth (13.4%) 8.4%

Gross Profit

Siding, Fencing and Railing $168.7 $180.2

% Margin 20.4% 27.4%

Windows and Doors 111.7 64.0

% Margin 20.9% 13.8%

Total Gross Profit $280.4 $244.2

% Margin 20.6% 21.8%

Reported Adjusted EBITDA $176.0 $127.3

% Margin 12.9% 11.3%

CapEx $20.0 $24.6

% of Sales 1.5% 2.2%

Action Taken Through the Cycle Positions Ply Gem for Expanding Profitability

Increased sales from market share

($350mm)

Determined action through the cycle

8 plant closures, saving $30mm

annually

$50mm in synergies achieved

($24mm post 2007)

Mittenand Gienowacquisitions

INVESTMENTHighlights

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Repair and Remodel Leverage to New Housing Starts

New Products and Innovation Drive

Share GainsM&A Opportunities

• Leading Manufacturer of Exterior Building Products

• Comprehensive Product Portfolio with Strong Brand Recognition

• Multi-Channel Distribution Network Servicing a Broad Customer Base

• Balanced End Market Exposure Driven by Diversified Product Mix

• Highly Efficient, Low Cost Operating Platform

• Proven Track Record of Acquisition Integration and Cost Savings Realization

• Strong Management Team with Significant Ownership

Key Investment Highlights

Platform Built for Growth and Operating Leverage