Third Quarter & 2017 Nine Month Results

Third Quarter & 2017 Nine Month Results Gary E. Robinette Chairman & Chief Executive Officer Shawn K. Poe Chief Financial Officer

Agenda Third Quarter Review & Nine Month Results Gary Robinette Financial Results by Segment Shawn Poe Margin and Growth Initiatives Gary Robinette Economic Outlook Gary Robinette Questions and Answers Gary Robinette & Shawn Poe Closing Remarks Gary Robinette 2

Legal Disclaimer 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 Ply Gem Holdings, Inc. (the Company ) to differ materially from the results expressed or implied, including: downturns or negative trends in the home repair and remodeling or the new construction end markets, or the U.S. and Canadian economies or the availability of consumer credit; competition from other building products manufacturers and alternative building materials; inability to successfully develop new products or improve existing products; 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; product liability claims, including class action claims and warranties, relating to the products we manufacture; litigation outside of product liability claims; loss of certain key personnel; interruptions in deliveries of raw materials or finished goods; changes in building codes and standards could increase the cost of our products, lower the demand for our products, or otherwise adversely affect our business; environmental costs and liabilities; manufacturing or assembly realignments; threats to, or impairments of, our intellectual property rights; increases in transportation, freight and fuel costs; changes in foreign currency exchange and interest rates; material non-cash impairment charges; our significant amount of indebtedness; covenants in the ABL Facility, the credit agreement governing our Senior Secured Term Loan Facility and the indenture governing the 6.50% Senior Notes; limitations on our net operating losses and payments under the tax receivable agreement to our stockholders; failure to successfully consummate and integrate acquisitions; actual or perceived security vulnerabilities or cyberattacks on our networks; failure to effectively manage labor inefficiencies associated with increased production and new employees added to the Company; failure to generate sufficient cash to service all of our indebtedness and make capital expenditures; control by the CI Partnerships; and the risks set forth in the Company s filings with the Securities and Exchange Commission. 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. In addition, these slides and the accompanying oral discussion reference financial information determined by methods other than in accordance with accounting principles generally accepted in the United States of America ( GAAP ), such as adjusted EBITDA. The Company s management uses these non-gaap measures in its analysis of the Company s performance. The Company believes that the presentation of certain non-gaap measures provides useful supplemental information that is essential to a proper understanding of the operating results of the Company s core business. These non-gaap measures should not be viewed as a substitute for operating results determined in accordance with GAAP, nor are they necessarily comparable to non-gaap performance measures that may be presented by other companies. A reconciliation of each non-gaap financial measure to the most directly comparable GAAP financial measure is provided in the appendix to the slides and is included in our press release issued on November 6, 2017 and posted on www.plygem.com. 3

Ply Gem Overview 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 & Cost Savings Realization Strong Management Team with Significant Ownership Windows 53% US 89% (*) Siding 47% (*) Canada 11% Platform Built for Growth and Operating Leverage Leverage to New Housing Starts Repair and Remodel New Products and Innovation Drive Share Gains M&A Opportunities (*) LTM September 30, 2017 4

Third Quarter 2017 Highlights ($ in Millions) Q3 2017 Q3 2016 Net Sales Y-O-Y Change Gross Profit Gross Profit % Operating Earnings Y-O-Y Change Adj. EBITDA As % of Net Sales $564.7 6.5% $132.0 23.4% $61.9 (9.0%) $77.1 13.7% End Market Exposure Q3 2017 Home Repair & Remodel 46% $530.4 $136.8 25.8% $68.0 $82.5 15.6% New Construction 54% Key Highlights Sales increased $34.3M during the quarter. Our U.S. businesses experienced an organic growth rate of 4.7% which was primarily driven by increased demand for our products within our Siding, Fencing and Stone segment and our new construction windows and doors. Favorable price and product mix provided a sales increase of $11.4M within our segments. Including the impact of $2.1M in favorable currency exchange rates and favorable pricing product mix, Canadian sales increased $11.5M during the quarter. Gross margin contracted 240 basis points primarily driven by unfavorable commodity costs, mainly PVC resin and aluminum, relative to Q3 2016 in our Siding, Fencing & Stone segment, and unfavorable freight costs, partially offset by higher average selling prices in our Siding, Fencing & Stone and Windows and Doors segments. The unfavorable commodity and freight costs were partially attributed to Hurricanes Harvey and Irma. Adjusted EBITDA margin decreased by 190 basis points due to unfavorable commodity and material costs and the unfavorable impact from Hurricanes Harvey and Irma which contributed to 40 basis points of the decrease, partially offset by higher average selling prices in both of our business segments. Q3 2017 LTM adjusted EBITDA of $230.2M. Note: Certain amounts in this presentation have been subject to rounding adjustments. Accordingly, amounts shown as total may not be the arithmetic aggregation of the individual amounts that comprise or precede them. 5

Adj. EBITDA Net Sales Third Quarter 2017 Highlights $600.0 Third Quarter Net Sales Performance Bridge ($ in Millions) $550.0 $530.4 11.4 17.8 9.3 4.2 $564.7 $500.0 $450.0 $400.0 3Q 2016 Net Sales Price/Mix U.S. Volume CAD Volume & FX Impact Hurricanes Impact 3Q 2017 Net Sales Third Quarter Adjusted EBITDA Performance Bridge ($ in Millions) $120.0 $100.0 11.4 8.3 $80.0 $82.5 19.2 3.5 2.4 $77.1 $60.0 $40.0 3Q 2016 Adj EBITDA Price/Mix Volume Material Costs / Freight Hurricanes Impact / Other Conversion / Fixed Costs 3Q 2017 Adj EBITDA 6

2017 Nine Month Highlights ($ in Millions) 9M 2017 9M 2016 Net Sales Y-O-Y Change Gross Profit Gross Profit % Operating Earnings Y-O-Y Change Adj. EBITDA As % of Net Sales $1,539.4 6.2% $358.4 23.3% $139.8 0.0% $185.3 12.0% End Market Exposure 9M 2017 $1,449.6 $358.8 24.8% $139.8 $184.1 12.7% Key Highlights Sales increase of $89.9M during the first nine months of 2017 was primarily due to organic growth in our U.S. and Canadian businesses. Our U.S. and Canadian businesses experienced organic growth rates of 6.0% and 14.4%, respectively, which was primarily driven by increased demand for our products within our Siding, Fencing and Stone segment and our new construction windows and doors. Favorable price and product mix provided a sales increase of $36.0M within our segments. Including the impact of favorable currency exchange rates and favorable price and product mix, Canadian sales during the first nine-months increased $18.1M. These sales drivers were partially offset by $6.2M resulting from 1 less shipping day in the first quarter compared to 2016 due to the Company s fiscal calendar. Home Repair & Remodel 44% New Construction 56% Gross margin contracted 150 basis points primarily driven by unfavorable commodity costs, mainly PVC resin and aluminum, in our Siding, Fencing & Stone segment, partially offset by higher average selling prices in our Siding, Fencing & Stone and Windows and Doors segments. Adjusted EBITDA increased $1.2M or 0.6% due to higher sales levels within both of our segments partially offset by unfavorable commodity and material costs, and the unfavorable impact from Hurricanes Harvey and Irma. 7

Adj. EBITDA Net Sales 2017 Nine Month Highlights 2017 Nine Month Net Sales Performance Bridge ($ in Millions) $1,600.0 $1,500.0 $1,449.6 52.5 36.0 11.7 6.2 4.2 $1,539.4 $1,400.0 $1,300.0 $1,200.0 9M 2016 Net Sales U.S. Volume Price/Mix CAD Volume & FX Impact Impact of Shipping Days Hurricanes Impact 9M 2017 Net Sales 2017 Nine Month Adjusted EBITDA Performance Bridge ($ in Millions) $260.0 20.9 $220.0 36.0 $180.0 $184.1 42.7 8.3 3.0 1.7 $185.3 $140.0 $100.0 9M 2016 Adj EBITDA Price/Mix Volume Material Costs / Freight Conversion / Fixed Costs Hurricanes Impact / Other Impact of Shipping Days 9M 2017 Adj EBITDA 8

Window & Doors (W&D) Segment Third Quarter Third Quarter Results ($ in Millions) Net Sales $286.5 $271.5 $33.7 $26.0 $252.8 $245.5 Q3 2017 Q3 2016 U.S. Canada Gross Margin % Q3 2017 Q3 2016 U.S. 20.3% 20.3% Canada 26.2% 24.2% Key Highlights Sales were favorable by $15.0M or 5.5% primarily driven by organic growth of our U.S. new construction products and Canadian business and favorable price and product mix. Our U.S. new construction business increased $6.6M or 3.8%, while our U.S. repair & remodeling products increased modestly $0.8M or 1.1%. Our Canadian business increased $7.6M or 29.3% which included a favorable foreign currency exchange of $1.0M. As a result of Hurricanes Harvey and Irma, our U.S. new construction and repair & remodeling products incurred lost sales of approximately $4.2M in the third quarter of 2017. Gross margin expanded by 40 basis points primarily driven by improved pricing and product mix for our U.S. new construction products and Canadian business, partially offset by increased commodity costs, mainly PVC resin, aluminum and glass, increased freight costs and a deterioration of gross margins in our U.S. repair and remodel products. SG&A expense increased $2.8M during the quarter primarily due to higher sales. As a percent of sales, SG&A expense increased modestly 40 basis points from 12.5% to 12.9%. End Market Exposure Q3 2017 Home repair & remodel 30% W&D Segment 21.0% 20.6% New construction 70% 9

W&D Segment Gross Margin Third Quarter 1,046 Historical Gross Margin Performance 622 445 471 431 535 618 648 715 782 836 20.9% 15.4% 14.0% 15.4% 13.1% 13.8% 9.7% 12.9% 18.1% 19.8% 20.4% 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 3Q17 LTM Annual Gross Profit % U.S. SFHS - in thousands (*) 25.0% 23.0% 21.0% 19.0% 17.0% 15.0% 20.6% 3Q16 Gross Margin Quarterly Gross Margin Performance 2.2% 0.2% Selling Price / Product Mix Conversion Costs & Other 1.7% 0.3% Commodity Costs / Freight Hurricane Impact 21.0% 3Q17 Gross Margin Selling price/product mix reflect favorable product mix and impact of selling price increases implemented in 2017 for the U.S. and Canada. Commodity costs unfavorable due mainly to increasing PVC resin, aluminum and glass costs. Hurricane impact relates to $4.2M in lost sales, unfavorable commodity and freight costs attributed to Hurricanes Harvey and Irma. 10

Window & Doors (W&D) Segment 2017 Nine Month 2017 Nine Month Results ($ in Millions) Net Sales $806.8 $769.8 $81.2 $69.0 $725.6 $700.8 9M 2017 9M 2016 U.S. Canada Gross Margin % 9M 2017 9M 2016 U.S. 20.6% 20.1% Canada 22.1% 19.0% Key Highlights Sales were favorable by $37.0M or 4.8% primarily driven by organic growth of our U.S. new construction products and Canadian business, and favorable price and product mix, partially offset by $3.6M resulting from 1 less shipping day in the first nine months of 2017 compared to 2016 due to the Company s fiscal calendar. Our U.S. new construction business increased $31.1M, or 6.4%, which was partially offset by a $6.3M, or 3.0%, decrease in our repair & remodeling products. Our Canadian business increased $12.2M, or 17.7%, which included a favorable foreign currency exchange of $0.8M. As a result of Hurricanes Harvey and Irma, our U.S. new construction and repair & remodeling products incurred lost sales of approximately $4.2M in 2017. Gross margin expanded by 80 basis points primarily driven by improved pricing and product mix for our U.S. new construction products and Canadian business, partially offset by increased commodity costs, mainly PVC resin, aluminum and glass, increased freight costs, and a deterioration of gross margins in our U.S. repair and remodel products. SG&A expense increased $2.9M, however as a percent of sales, SG&A expense decreased 30 basis points from 14.2% to 13.9% as a result of improved leverage on the fixed component of SG&A expense. End Market Exposure 9M 2017 Home repair & remodel 28% W&D Segment 20.8% 20.0% New construction 72% 11

W&D Segment Gross Margin 2017 Nine Month 25.0% 23.0% 2017 Nine Month Gross Margin Performance Selling price/product mix reflect favorable product mix and impact of selling price increases implemented in 2017 for the U.S. 2.7% and Canada. 21.0% 19.0% 20.0% 1.8% 0.1% 20.8% Commodity costs unfavorable due mainly to increasing PVC resin, aluminum and glass costs. 17.0% 15.0% 9M16 Gross Margin Selling Price / Product Mix Material Costs / Freight Hurricane Impact 9M17 Gross Margin Hurricane impact relates to $4.2M in lost sales, unfavorable commodity and freight costs attributed to Hurricanes Harvey and Irma. 12

Siding, Fencing & Stone (SFS) Segment Third Quarter Third Quarter Results ($ in Millions) Net Sales $278.2 $258.9 $26.5 $22.6 $251.7 $236.3 Q3 2017 Q3 2016 U.S. Canada Gross Margin % Q3 2017 Q3 2016 U.S. 25.5% 31.5% Canada 28.3% 28.9% SFS Segment 25.8% 31.2% Key Highlights Sales increase of $19.3M or 7.4% primarily driven by organic unit growth of 6.2% and 4.9% in the U.S. and Canadian businesses, respectively, and $3.7M of price and product mix, including favorable foreign currency which impacted sales by $1.1M. Gross margin contracted by 540 basis points, primarily driven by unfavorable commodity costs due mainly from PVC resin, unfavorable by 7.7%, and aluminum, unfavorable by 24.0%, and freight costs partially offset by realized selling price increases. The unfavorable commodity and freight costs were partially attributed to Hurricanes Harvey and Irma. SG&A expense decreased by $1.2M during the quarter due to lower management incentive compensation expense. As a percent of sales, SG&A expense decreased 100 basis points from 8.7% to 7.7%. End Market Exposure Q3 2017 Home repair & remodel 61% New construction 39% 13

SFS Segment Gross Margin Third Quarter Historical Gross Margin Performance.5208.6200.5288.6458.6971.6975.7134.7534.7250.7617.8200 20.4% 18.4% 25.9% 25.7% 24.8% 27.4% 26.8% 26.1% 28.4% 29.3% 26.1% 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 3Q17 LTM Annual Gross Profit % PVC Resin Price/lbs (*) 35.0% 30.0% 25.0% 31.2% Quarterly Gross Margin Performance 1.0% 4.7% 1.3% 0.4% 25.8% Selling price/product mix reflects selling price increases announced during 1Q17 and 2Q17. Commodity costs unfavorable due mainly to increasing PVC resin, unfavorable by 7.7%, and aluminum costs, unfavorable by 24.0%. 20.0% 15.0% 3Q16 Gross Margin Selling Price / Product Mix Commodity Costs / Freight Conversion Costs & Other Hurricane Impact 3Q17 Gross Margin Hurricane impact relates to unfavorable commodity and freight costs attributed to Hurricanes Harvey and Irma. 14

Siding, Fencing & Stone (SFS) Segment 2017 Nine Month 2017 Nine Month Results ($ in Millions) Key Highlights $732.6 $61.6 Net Sales $679.7 $56.3 Sales increase of $52.9M or 7.8% primarily driven by organic unit growth of 5.6% and 4.7% in the U.S. and Canadian businesses, respectively, and $9.4M of price and product mix, including the impact of favorable foreign currency which impacted sales by $0.9M, partially offset by $2.6M resulting from 1 less shipping day in the first half of 2017 compared to 2016 due to the Company s fiscal calendar. $671.0 $623.4 9M 2017 9M 2016 U.S. Canada Gross Margin % 9M 2017 9M 2016 U.S. 25.8% 30.6% Canada 27.7% 26.9% SFS Segment 26.0% 30.1% Gross margin contracted by 410 basis points, primarily driven by unfavorable commodity costs due mainly from PVC resin, unfavorable by 10.3%, and aluminum, unfavorable by 21.9%, partially offset by realized selling price increases. A portion of the unfavorable commodity and freight costs were attributed to Hurricanes Harvey and Irma. SG&A expense increased slightly by $0.3M during the first nine months of 2017 due to increased sales and marketing from the 7.8% sales increase partially offset by lower management incentive compensation. As a percent of sales, SG&A expense decreased 60 basis points from 10.0% to 9.4%. End Market Exposure 9M 2017 Home repair & remodel 60% New construction 40% 15

SFS Segment Gross Margin 2017 Nine Month 35.0% 30.0% 25.0% 30.1% 2017 Nine Month Gross Margin Performance 0.9% 3.4% 1.4% 0.2% 26.0% Selling price/product mix reflects selling price increases announced during 1Q17 and 2Q17. Commodity costs unfavorable due mainly to increasing PVC resin, unfavorable by 10.3%, and aluminum costs, unfavorable by 21.9%. 20.0% 15.0% 9M16 Gross Margin Selling Price / Product Mix Commodity Costs / Freight Conversion Costs & Other Hurricane Impact 9M17 Gross Margin Hurricane impact relates to unfavorable commodity and freight costs attributed to Hurricanes Harvey and Irma. 16

Leverage Ratio Historical Leverage Ratio ($ in Millions) 2011 2012 2013 2014 2015 2016 3Q16 LTM 3Q17 LTM Senior Notes $950.0 $1,000.0 $852.0 $650.0 $650.0 $650.0 $650.0 $650.0 Term Loan Facility - - - 426.8 422.5 258.2 359.3 255.0 ABL 55.0 15.0 - - - - - - Total Debt $1,005.0 $1,015.0 $852.0 $1,076.8 $1,072.5 $908.2 $1,009.3 $905.0 Cash 11.7 27.2 69.8 33.2 109.4 52.0 62.7 28.4 Net Debt $993.3 $987.8 $782.2 $1,043.6 $963.1 $856.2 $946.6 $876.6 Adj. EBITDA $112.2 $126.8 $117.5 $124.2 $184.6 $229.0 $227.4 $230.2 Interest Coverage 1.2 1.3 1.4 1.9 3.1 3.9 3.8 4.1 Leverage Ratio 8.9 7.8 6.7 8.4 5.2 3.7 4.2 3.8 10.0 8.0 8.9 7.8 6.7 8.4 6.0 5.2 4.0 3.7 4.2 3.8 2.0-2011 2012 2013 2014 2015 2016 3Q16 LTM 3Q17 LTM 17 Note: On November 3, 2017, the Company made a $40.0M voluntary payment on the Term Loan Facility bringing our cumulative payments on the Term Loan Facility to $200.0M since 2016.

Margin Enhancements & Growth Initiatives Selling Price Increases W&D Q1 2018 price increases were announced in October 2017. Selling price increases range from 5% to 8% SFS Q1 2018 price increases for all vinyl products were announced in November 2017. Selling price increases range from 8% to 10% SFS Q1 2018 price increases for all metal and metal accessory products were announced in November 2017. Selling price increases range from 6% to 8% Growth Initiatives Cross Selling Opportunities Continue to integrate our extensive product categories across our legacy customer base and acquired Simonton customer base Expand market penetration of Ply Gem s adjacent products such as PVC trim, engineered roofing and engineered stone Implementation of our 2x20 initiatives which is to produce a 2% incremental improvement of our adjusted EBITDA margin by 2020 Continued new product innovation through the Ply Gem Insight Center and Foundation Labs 18

Economic Outlook & Guidance Expect Continued Steady Growth in U.S. Housing Starts Expect a 2017 U.S. housing recovery growth of 6% to 8% in our markets Expect an overall moderate growth rate for big ticket R&R spend of approximately 3% in 2017 Overall 2017 Canadian housing starts expected to be relatively flat compared to 2016 2017 EBITDA Guidance and Debt Leverage On November 3, 2017, the Company made a $40.0M voluntary payment on the Term Loan Facility bringing our cumulative payments on the Term Loan Facility to $200.0M since 2016 Based on the forecasted growth of the U.S. housing market and R&R spend for the remainder of 2017, the short-term headwinds associated with Hurricanes Harvey and Irma, the impact of our enacted selling price increases and other margin enhancing initiatives, we expect our Q4 2017 adjusted EBITDA to be in the range of $50M to $55M which would equate to a full year 2017 adjusted EBITDA of $235M to $240M 19

Appendix Non-GAAP Adjusted EBITDA Reconciliation 20

Third Quarter Adjusted EBITDA Reconciliation (amounts in thousands) For the three months ended September 30, 2017 For the three months ended October 1, 2016 Net income $27,534 $54,755 Interest expense, net 17,518 17,805 Provision (benefit) for income taxes 17,659 (49,128) Depreciation and amortization 13,237 14,123 EBITDA $75,948 $37,555 Non cash loss (gain) on foreign currency transactions (810) 111 Customer inventory buybacks 1,089 334 Restructuring/integration expense 134 16 Litigation class action charges, net 757 - Loss on modification or extinguishment of debt - 2,251 Tax receivable agreement liability adjustment - 42,215 Adjusted EBITDA $77,118 $82,482 21

Third Quarter EBITDA Adjustments By Segment (*) (amounts in thousands) Non cash loss (gain) on foreign currency transactions For the three months ended September 30, 2017 SFS Segment W&D Segment Total For the three months ended October 1, 2016 SFS Segment W&D Segment Total ($75) ($735) ($810) ($58) $169 $111 Customer inventory buybacks 600 489 1,089 334-334 Restructuring/integration expense - 134 134 11 5 16 Litigation class action charges, net - 82 82 - - - $525 ($30) $495 $287 $174 $461 (*) Does not reflect unallocated and corporate EBITDA adjustments 22

Nine Months Adjusted EBITDA Reconciliation (amounts in thousands) For the nine months ended September 30, 2017 For the nine months ended October 1, 2016 Net income $53,756 $68,824 Interest expense, net 51,770 55,012 Provision (benefit) for income taxes 35,882 (48,597) Depreciation and amortization 39,792 42,466 EBITDA $181,200 $117,705 Non cash gain on foreign currency transactions (1,582) (728) Customer inventory buybacks 2,287 1,401 Restructuring/integration expense 1,546 513 Litigation class action charges, net 1,870 - Tax receivable agreement liability adjustment - 60,606 Loss on modification or extinguishment of debt - 4,650 Adjusted EBITDA $185,321 $184,147 23

Nine Months EBITDA Adjustments By Segment (*) (amounts in thousands) Non cash gain on foreign currency transactions For the nine months ended September 30, 2017 SFS Segment W&D Segment Total For the nine months ended October 1, 2016 SFS Segment W&D Segment Total ($318) ($1,264) ($1,582) ($261) ($467) ($728) Customer inventory buybacks 1,798 489 2,287 1,414 (13) 1,401 Restructuring/integration expense 348 134 482 190 323 513 Litigation class action charges, net - 122 122 - - - $1,828 ($519) $1,309 $1,343 ($157) $1,186 (*) Does not reflect unallocated and corporate EBITDA adjustments 24