Exhibit 99.1

CONTINENTAL BUILDING PRODUCTS REPORTS THIRD QUARTER 2014 RESULTS

Herndon, Virginia, November 3, 2014. Continental Building Products, Inc. (NYSE: CBPX) (the “Company”), a leading manufacturer of gypsum wallboard and complementary finishing products, announced today results for the third quarter ended September 30, 2014.

Highlights of Third Quarter 2014 (Successor) as Compared to Third Quarter 2013 on a Pro Forma Basis^1,2

“Our focus on operational excellence and maximizing our returns from our low cost base was evident in our third quarter results,” stated Ike Preston, Continental’s CEO. “We significantly increased our adjusted EBITDA and demonstrated the operating leverage that we are able to generate as volumes grow. We also used the majority of our EBTIDA to reduce debt and further improve our credit ratios.”

Mr. Preston continued, “As we finish 2014 and look to the new year, we remain focused on realizing the full potential of our business. We are confident that the long-term fundamentals for construction growth remain strong and we remain focused on delivering value to our customers while actively managing our costs and continuing to deploy our capital in a disciplined manner to drive shareholder value.”

Third Quarter 2014 (Successor) vs. Third Quarter 2013 on a Pro forma Basis

Net sales for the third quarter of 2014 totaled $113.8 million, up 8.6%, compared to $104.7 million in the pro forma third quarter of 2013. The increase in sales was supported by a 6.3% increase in the average mill net price to $154.10 per MSF from $144.96 per MSF in the prior year quarter. Wallboard volumes also contributed to the sales increase with a rise of 3.8% to 590 MMSF compared to 568 MMSF in the prior year quarter, with a 6.7% increase in U.S. volumes partially offset by lower volumes in Canada. The improvement in sales was slightly offset by the impact of unfavorable foreign exchange rates.

The comparison of the periods presented was significantly impacted by costs associated with the Company’s acquisition by Lone Star in 2013. Gross profit was $28.0 million in the third quarter of 2014, compared to $14.1 million in the prior year quarter on a pro forma basis. Gross profit in the third quarter of 2013 includes $7.2 million of nonrecurring costs primarily related to lease termination costs and defined benefit plans no longer maintained by the Company following the acquisition. Excluding the impact of these nonrecurring items, gross profit improved $6.6 million, or 420 basis points, from the prior year quarter primarily as a result of higher average wallboard mill net prices and operating leverage achieved with increased sales volumes.

Selling and Administrative expense (SG&A) was $7.8 million in the third quarter of 2014, a decrease of 43.6% from $13.8 million in the prior year quarter on a pro forma basis. Excluding the impact of $4.6 million of nonrecurring expenses mostly related to closing fees for the acquisition, SG&A improved $1.4 million, or 200 basis points, from the prior year quarter as strict cost controls helped offset additional costs to operate as a stand-alone publicly traded company following the completion of our Initial Public Offering in February 2014. Services performed by Lafarge North America, which resulted in allocated SG&A costs in the prior year, are now performed in-house or through a transition services agreement with Lafarge North America, which we expect to terminate in November 2014. In the current quarter, all of these costs were captured in direct SG&A.

Operating income was $20.2 million in the third quarter of 2014, up $19.9 million from $0.3 million in the prior year quarter on a pro forma basis.

Interest expense was $4.9 million in the third quarter of 2014, down $0.8 million from $5.8 million in the prior year quarter on a pro forma basis, largely reflecting a reduction in long-term debt and a decrease in the interest rate on the Company’s borrowings. In August 2014, Moody’s upgraded the Company’s corporate rating to B2 from B3 with a stable rating outlook which resulted in a 25 basis point reduction of the interest rate paid by the Company. Year to date, the Company has reduced its interest rate margin spread on long-term debt under its first lien credit agreement by 75 basis points.

Net income was $9.5 million, or $0.22 per share, for the third quarter of 2014, compared to a net loss of $5.4 million, or a $0.12 loss per share, in the prior year quarter on a pro forma basis. Adjusted net income was $4.5 million, or $0.10 per share, for the third quarter 2013, excluding the impact of nonrecurring costs.⁴

Adjusted EBITDA increased 32.0% to $33.7 million for the third quarter of 2014 compared to $25.6 million for the prior year quarter on a pro forma basis.

On September 30, 2014, the Company had cash of $12.2 million and total debt outstanding of $374.0 million. In the third quarter of 2014, the Company generated operating cash flow of $33.4 million and incurred $3.2 million of capital expenditures. In the third quarter of 2014, the Company used cash on hand for the repayment of $24.9 million of debt with the next principal payment on the Company’s indebtedness not required until August 2020.

2

Investor Conference Webcast and Conference Call:

The Company will host a webcast and conference call on Monday, November 3, 2014 at 5:00 p.m. Eastern time to review third quarter results and discuss recent events. The live webcast will be available on the Investor Relations section of the Company’s website at www.continental-bp.com. To participate in the call, please dial 877-407-3982 (domestic) or 201-493-6780 (international). A replay of the conference call will be available through December 3, 2014, by dialing 877-870-5176 (domestic) or 858-384-5517 (international) and entering the pass code 13592221.

About Continental Building Products

Continental Building Products is a leading North American manufacturer of gypsum wallboard, joint compound and complementary finishing products. The Company is headquartered in Herndon, Virginia with operations serving the residential, commercial and repair and remodel construction markets primarily in the eastern United States and eastern Canada. For additional information, visit www.continental-bp.com.

On August 30, 2013, an affiliate of the Company’s controlling stockholder acquired substantially all of the assets of the gypsum business that was part of Lafarge North America Inc. (Lafarge) for a purchase price of approximately $703 million. The financial statements presented for periods prior to August 30, 2013, or the Predecessor statements, are derived from Lafarge’s consolidated financial statements and accounting records of its gypsum division. Continental, which was formed on July 26, 2013, had no operating results prior to its acquisition of the Lafarge gypsum division. The financial statements after August 30, 2013, or the Successor statements, reflect the net assets acquired at fair value and also include additional indebtedness arising from the acquisition. As a result, the Successor statements and Predecessor statements are not readily comparable.

Third quarter 2013 and nine months ended September 30, 2013, operating figures are presented on a pro forma basis to reflect the acquisition that was completed on August 30, 2013. The unaudited pro forma combined statements of operations give effect to the pro forma transactions as though the pro forma transactions had occurred as of January 1, 2012.

Forward-Looking Statements

This press release contains forward-looking statements. Forward-looking statements may be identified by the use of words such as “anticipate”, “believe”, “expect”, “estimate”, “plan”, “outlook”, and “project” and other similar expressions that predict or indicate future events or trends or that are not statements of historical matters. Forward-looking statements should not be read as a guarantee of future performance or results, and will not necessarily be accurate indications of the times at, or by, which such performance or results will be achieved. Forward-looking statements are based on historical information available at the time the statements are made and are based on management’s reasonable belief or expectations with respect to future events, and are subject to risks and uncertainties, many of which are beyond the Company’s control, that could cause actual performance or results to differ materially from the belief or expectations expressed in or suggested by the forward-looking statements. Forward-looking statements speak only as of the date on which they are made and the Company undertakes no obligation to update any forward-looking statement to reflect future events, developments or otherwise, except as may be required by applicable law. Investors are referred to the Company’s filings with the Securities and Exchange Commission, including its Annual Report on Form 10-K for fiscal year 2013 filed on March 27, 2014, for additional information regarding the risks and uncertainties that may cause actual results to differ materially from those expressed in any forward-looking statement.

3

Contact Information:

Investor Relations:

703 480-3980

Investorrelations@continental-bp.com

4

Continental Building Products, Inc.

Consolidated (Successor) / Combined (Predecessor) Statements of Operations

(dollars in thousands, except per share data)

(Unaudited)

5

6

Continental Building Products, Inc.

Consolidated Balance Sheets

(dollars in thousands)

7

Continental Building Products, Inc.

Consolidated (Successor) / Combined (Predecessor) Statements of Cash Flows

(dollars in thousands, except per share data)

(Unaudited)

8

Description of Pro forma Adjustments for the Unaudited Combined Pro Forma Results of Operations for 2013

The following unaudited pro forma combined statements of operations data for the three and nine months ended September 30, 2013 have been derived by application of pro forma adjustments to our historical combined financial statements. The unaudited pro forma combined financial information is for illustrative and informational purposes only and does not purport to represent what our financial position or results of operations would have been if we had operated as a stand-alone public company during the periods presented or if the transactions described below had actually occurred as of the dates indicated, nor does it project our financial position at any future date or our results of operations or cash flows for any future period.

Our unaudited pro forma combined financial information has been prepared to reflect adjustments to our historical financial information that are: (1) directly attributable to the transactions described below; (2) factually supportable; and (3) expected to have a continuing impact on our results. The unaudited pro forma combined financial information does not include non-recurring items, including, but not limited to, legal and advisory fees related to our initial public offering. The unaudited pro forma combined financial information gives effect to the following transactions, or the Pro Forma Transactions, as if they had occurred as of January 1, 2012:

At the closing of the acquisition, we entered into a transitional services agreement, under which Lafarge provides certain services to us that were previously provided when we were wholly owned by Lafarge for fees specified in that agreement. The services include corporate services, such as information technology, accounting and finance services, marketing support, customer support, treasury, facility and other corporate and infrastructural services. We also incur additional costs for financial reporting and compliance, corporate governance, treasury and investor relations activities, which costs include additional compensation to current and future employees and professional fees to external service providers. No pro forma adjustments have been made to the historical financial statements to reflect the additional costs and expenses described in this paragraph.

9

Continental Building Products, Inc.

Pro Forma Combined Statements of Operations for the Three and Nine Months Ended September 30, 2013

(dollars in thousands)

(Unaudited)

10

Notes to the unaudited pro forma statements of operations:

The unaudited pro forma combined statements of operations reflect an adjustment for the increase in depreciation and amortization expenses related to the fair value adjustments to tangible and long-lived intangible assets with definite lives assuming the acquisition occurred at January 1, 2012. The incremental pro forma amortization expense for long-lived intangible assets with definite lives was $ 2.6 million and $10.4 million for the three and nine months ended September 30, 2013, respectively. The incremental pro forma depreciation expense for long-lived tangible assets was $1.8 million and $7.2 million for the three and nine months ended September 30, 2013, respectively.

The Successor results for the period July 26 to September 30, 2013 include an additional expense of $1.5 million for inventory that was stepped up to fair value as part of purchase accounting on August 30, 2013 and expensed through cost of sales as the inventory was sold. The unaudited pro forma combined statements of operations for both the three and nine months ended September 30, 2013 reflect an adjustment to lower cost of sales by $1.5 million as this purchase accounting adjustment is assumed to have taken place on January 1, 2012, the date that the transaction is assumed to have occurred for pro forma purposes.

In conjunction with our initial public offering that we completed in February 2014, we granted approximately 142,000 stock options and 75,000 restricted shares to employees. The fair value of the restricted shares is based on the share price on the date of grant, which was the offering price of $14.00 per share. The unaudited combined statements of operations reflect compensation expense for this award assuming the awards were granted on January 1, 2012. Pro forma compensation expense of $0.1 million and $0.4 million has been recognized in selling and administrative expense for the three and nine months ended September 30, 2013 based on a vesting period of four years.

In connection with the acquisition, we entered into a $320 million first lien credit agreement that also included a revolving credit facility of up to $50 million U.S. dollars, and a $120 million second lien credit agreement. At the closing of the acquisition, US $28.5 million was borrowed under the revolver. On December 2, 2013, we entered into amendments to the first lien credit agreement and the second lien credit agreement pursuant to which we issued additional term loans in an aggregate principal amount of $95 million under the first lien credit agreement and $35 million under the second lien credit agreement with the proceeds distributed as a return of capital to our owner, Lone Star. On February 10, we used the proceeds from our initial public offering and cash on hand to completely repay the $155 million due under the second lien credit Agreement. For our pro forma statements of operations, all three of these events are assumed to have happened on January 1, 2012 and result in the unaudited pro forma combined statements of operations reflecting an adjustment for interest expense and the amortization of deferred financing costs on the $415 million first lien term loans and approximately $28.5 million revolver borrowings. Incremental pro forma interest expense was $3.5 million and $15.0 million for the three and nine months ended September 30, 2013, respectively.

The borrowings for the debt assumed to be outstanding at January 1, 2012 are floating rate at LIBOR plus a specified spread (plus 3.75% for the first lien term loans and plus 3.00% for the revolver), with the agreements stipulating a LIBOR floor of 1%. A rise of current interest rate levels to above the 1% floor would be required to increase our interest expense and a reduction in interest rates would have no impact. As of September 30, 2014, we had elected to use three month LIBOR with a rate of 0.25%. A hypothetical 1% increase in interest rates would have increased interest expense by $0.2 million and $0.7 million for the pro forma three and nine months ended September 30, 2013, respectively.

11

The termination fee of $2.0 million for the asset advisory agreement with an affiliate of Lone Star and the $3.1 million for the 2% call premium on early repayment of our second lien credit agreement were not included in the pro forma income statement as each represents a non-recurring expense.

As of the acquisition and through September 30, 2013, the equity interest in Seven Hills remained with Lafarge. Under the terms of the Asset Purchase Agreement entered into in connection with the acquisition, Lafarge is passing through all of the benefits and burdens of the Joint Venture Agreement and the other operative agreements to us, and our supply of paper from the joint venture has continued after the closing of the acquisition under the same terms and conditions as existed prior to the acquisition. We elected to measure this financial interest in Seven Hills at fair value and the pro forma combined statements of operations eliminate the equity earnings of this investment.

Due to our limited history and the history of pre-tax losses generated by the Predecessor, deferred tax benefits were not recorded on the pro forma adjustments.

Reconciliation of GAAP Measures to Non-GAAP Measures

EBITDA, Adjusted EBITDA, Adjusted EBITDA Margin, Adjusted Net Income and Adjusted Earnings Per Share have been presented in this press release as supplemental measures of financial performance that are not required by, or presented in accordance with, Generally Accepted Accounting Principles (“GAAP”). We have presented EBITDA, Adjusted EBITDA, Adjusted EBITDA Margin, Adjusted Net Income and Adjusted Earnings Per Share as supplemental performance measures because we believe that they facilitate a comparative assessment of our operating performance relative to our performance based on our results under GAAP while isolating the effects of some items that vary from period to period without any correlation to core operating performance and eliminate certain charges that we believe do not reflect our operations and underlying operational performance. Management also believes that EBITDA, Adjusted EBITDA, Adjusted EBITDA Margin, Adjusted Net Income and Adjusted Earnings Per Share are useful to investors because they present a better reflection of our performance as an independent company following the acquisition and allows investors to view our business through the eyes of management and the Board of Directors, facilitating comparison of results across historical periods.

EBITDA, Adjusted EBITDA, Adjusted EBITDA Margin, Adjusted Net Income and Adjusted Earnings Per Share may not be comparable to similarly titled measures of other companies because other companies may not calculate EBITDA, Adjusted EBITDA, Adjusted EBITDA Margin, Adjusted Net Income and Adjusted Earnings Per Share in the same manner as we do. EBITDA, Adjusted EBITDA, Adjusted EBITDA Margin, Adjusted Net Income and Adjusted Earnings Per Share are not measurements of our financial performance under GAAP and should not be considered in isolation or as alternatives to operating income determined in accordance with GAAP or any other financial statement data presented as indicators of financial performance or liquidity, each as calculated and presented in accordance with GAAP.

12

The following is a reconciliation of operating income to EBITDA, adjusted EBITDA and adjusted EBITDA margin:

13

The following is a reconciliation of net income (loss) and earnings (loss) per share to adjusted net income and adjusted earnings per share:

14

Interim Volumes and Mill Net Prices

(unaudited)

15