UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G

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Rule 13d-1(b)

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Rule 13d-1(c)

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Rule 13d-1(d)

CUSIP No.  073685109

1.

Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only)
Code, Hennessy & Simmons III, L.P.

2.

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

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(b)

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3.

SEC Use Only

4.

Citizenship or Place of Organization
Delaware

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
200,795

6.

Shared Voting Power 
-0-

7.

Sole Dispositive Power 
200,795

8.

Shared Dispositive Power
-0-

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
200,795

10.

Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

11.

Percent of Class Represented by Amount in Row (9)
0.7%

12.

Type of Reporting Person (See Instructions)
PN

1.

Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only)
CHS Management III LP

2.

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

o

(b)

ý

3.

SEC Use Only

4.

Citizenship or Place of Organization
Delaware

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
200,795

6.

Shared Voting Power 
-0-

7.

Sole Dispositive Power 
200,795

8.

Shared Dispositive Power
-0-

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
200,795

10.

Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

11.

Percent of Class Represented by Amount in Row (9)
0.7%

12.

Type of Reporting Person (See Instructions)
PN

1.

Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only)
Code, Hennessy & Simmons LLC

2.

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

o

(b)

ý

3.

SEC Use Only

4.

Citizenship or Place of Organization
Delaware

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
200,795

6.

Shared Voting Power 
-0-

7.

Sole Dispositive Power 
200,795

8.

Shared Dispositive Power
-0-

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
200,795

10.

Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

11.

Percent of Class Represented by Amount in Row (9)
0.7%

12.

Type of Reporting Person (See Instructions)
OO

Item 1.

(a)

Name of Issuer

This statement on Schedule 13G relates to shares of common stock of Beacon Roofing Supply, Inc., a Delaware corporation (the “Issuer”).

(b)

Address of Issuer’s Principal Executive Offices
1 Lakeland Park Drive, Peabody, MA  01960

Item 2.

(a)

Name of Person Filing

Pursuant to Rules 13d-1(k)(1) and (2) promulgated under the Securities Exchange Act of 1934, as amended (the “Act”), the undersigned hereby file this Schedule 13G on behalf of Code, Hennessy & Simmons III, L.P., a Delaware limited partnership (“Fund III”), CHS Management III LP, a Delaware limited partnership (“Code Management”), and Code, Hennessy & Simmons LLC, a Delaware limited liability company (“Code LLC”).  The foregoing persons are sometimes referred to collectively as the “Reporting Persons.”  The Reporting Persons are making this single, joint filing because they may be deemed to constitute a “group” within the meaning of Section 13(d)(3) of the Act, although neither the fact of this filing nor anything contained herein shall be deemed an admission by any of the Reporting Persons that such a “group” exists.

(b)

Address of Principal Business Office or, if none, Residence
The address or principal business office of each of the Reporting Persons is 10 South Wacker Drive, Chicago, Illinois 60606.

(c)

Citizenship
Fund III and Code Management are limited partnerships organized under the laws of the State of Delaware.  Code LLC is a limited liability company organized under the laws of the State of Delaware.

(d)

Title of Class of Securities
The securities reported herein are shares of common stock, $0.01 par value per share, of the Issuer (“Common Stock”).

(e)

CUSIP Number
073685109

Item 3.

If this statement is filed pursuant to §§240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:

(a)

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Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).

(b)

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Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).

(c)

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Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).

(d)

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Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C 80a-8).

(e)

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An investment adviser in accordance with §240.13d-1(b)(1)(ii)(E);

(f)

o

An employee benefit plan or endowment fund in accordance with §240.13d-1(b)(1)(ii)(F);

(g)

o

A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);

(h)

o

A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i)

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A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j)

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Group, in accordance with §240.13d-1(b)(1)(ii)(J).

Item 4.

Ownership

Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1.

The percentages stated herein are based on a total of 28,923,463 shares of Common Stock outstanding as of January 6, 2006 as disclosed in the Issuer’s Schedule 14A filed with the Securities and Exchange Commission on January 17, 2006.

(a)-(b)

Fund III. Fund III beneficially owns 200,795 shares of Common Stock, constituting approximately 0.7% of the shares of Common Stock outstanding.

Code Management  By reason of its status as the general partner of Fund III, Code Management may be

deemed to beneficially own the 200,795 shares of Common Stock held by Fund III, constituting approximately 0.7% of the shares of Common Stock outstanding.  Code Management disclaims beneficial ownership of those shares in which it does not have a pecuniary interest.

Code LLC  By reason of its status as a general partner of Code Management, the general partner of Fund

III, Code LLC may be deemed to beneficially own the 200,795 shares of Common Stock held by Fund III, constituting approximately 0.7% of the shares of Common Stock outstanding.  Code LLC disclaims beneficial ownership of those shares in which it does not have a pecuniary interest.

(c)(i) – (iv)

Fund III. Fund III has sole power to vote or direct the vote and sole power to dispose or direct the disposition of 200,795 shares of Common Stock.

Code Management  By reason of its status as the general partner of Fund III, Fund III may be deemed to have sole power to vote or direct the vote and sole power to dispose or direct the disposition of the 200,795 shares of Common Stock held by Fund III.  Code Management disclaims beneficial ownership of those shares in which it does not have a pecuniary interest.

Code LLC   By reason of its status as a general partner of Code Management, the general partner of Fund III, Code LLC may be deemed to have sole power to vote or direct the vote and sole power to dispose or direct the disposition of the 200,795 shares of Common Stock held by Fund III.  Code LLC disclaims beneficial ownership of those shares in which it does not have a pecuniary interest.

Item 5.

Ownership of Five Percent or Less of a Class

If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following   ý.

Item 6.

Ownership of More than Five Percent on Behalf of Another Person

Not applicable.

Item 7.

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company or Control Person

Not applicable.

Item 8.

Identification and Classification of Members of the Group

See Items 2 and 4(a)-(b) hereof.

Item 9.

Notice of Dissolution of Group

Not applicable.

Item 10.

Certification

Not applicable.

Dated as of February 14, 2006.

CODE, HENNESSY & SIMMONS III, L.P.

By:

CHS Management III, L.P., its general partner

By:

Code Hennessy & Simmons LLC, its general partner

By:

/s/ Peter M. Gotsch

Name:

Peter M. Gotsch

Its:

     Member

CHS MANAGEMENT III, L.P.

By:

Code Hennessy & Simmons LLC, its general partner

By:

/s/ Peter M. Gotsch

Name:

Peter M. Gotsch

Its:

     Member

CODE HENNESSY & SIMMONS LLC

By:

/s/ Peter M. Gotsch

Name:

Peter M. Gotsch

Its:

      Member

Exhibit

Document Description

A

Agreement pursuant to Rule 13d-1(k)(1)(iii)

Dated as of February 14, 2006.

CODE, HENNESSY & SIMMONS III, L.P.

By:

CHS Management III, L.P., its general partner

By:

Code Hennessy & Simmons LLC, its general partner

By:

/s/ Peter M. Gotsch

Name:

Peter M. Gotsch

Its:

     Member

CHS MANAGEMENT III, L.P.

By:

Code Hennessy & Simmons LLC, its general partner

By:

/s/ Peter M. Gotsch

Name:

Peter M. Gotsch

Its:

     Member

CODE HENNESSY & SIMMONS LLC

By:

/s/ Peter M. Gotsch

Name:

Peter M. Gotsch

Its:

      Member