SECURITIES & EXCHANGE COMMISSION
                             Washington, D.C. 20549
                             ----------------------

                                 SCHEDULE 13GA*
                                 (Rule 13d-102)

             INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
           TO RULES 13d-1(b), (c) AND (d) AND AMENDMENTS THERETO FILED
                              PURSUANT TO 13d-2(b)

                           Beacon Roofing Supply, Inc.
                                (Name of Issuer)

                                  Common Stock
                         (Title of Class of Securities)

                                    073685109
                                 (CUSIP Number)

                                December 31, 2005
             (Date of event which requires filing of this statement)



     Check the appropriate box to designate the rule pursuant to which this
Schedule 13GA is filed:


     [ ]  Rule 13d-1(b)
     [X]  Rule 13d-1(c)
     [ ]  Rule 13d-1(d)





                              (Page 1 of 12 Pages)
----------------
     *The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which would
alter the disclosures provided in a prior cover page.

     The information required in the remainder of this cover page shall not be
deemed to be "filed" for purposes of Section 18 of the Securities Exchange Act
of 1934 ("Act") or otherwise subject to the liabilities of that section of the
Act but shall be subject to all other provisions of the Act (however, see the
Notes).






CUSIP No. 073685109                 13GA                   Page 2 of 12 Pages

-----------------------------------------------------------------------------
     (1)    NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NO.
            OF ABOVE PERSONS (ENTITIES ONLY)
                                                 Scout Capital Partners, L.P.
-----------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
                                                                  (a)  [X]
                                                                  (b)  [ ]
-----------------------------------------------------------------------------
     (3)    SEC USE ONLY
-----------------------------------------------------------------------------
     (4)    CITIZENSHIP OR PLACE OF ORGANIZATION
                            Delaware
-----------------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                                                -0-
SHARES         ______________________________________________________________

BENEFICIALLY   (6)  SHARED VOTING POWER
                                                42,599
OWNED BY       ______________________________________________________________

EACH           (7)  SOLE DISPOSITIVE POWER
                                                -0-
REPORTING      ______________________________________________________________

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                                                42,599
-----------------------------------------------------------------------------
     (9)    AGGREGATE AMOUNT BENEFICIALLY OWNED
            BY EACH REPORTING PERSON
                                                42,599
-----------------------------------------------------------------------------
     (10)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES **                       [ ]
-----------------------------------------------------------------------------
     (11)   PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (9)
                                                0.16%
-----------------------------------------------------------------------------
     (12)   TYPE OF REPORTING PERSON **
                                                PN
-----------------------------------------------------------------------------
                     ** SEE INSTRUCTIONS BEFORE FILLING OUT!






CUSIP No. 073685109                 13GA                   Page 3 of 12 Pages

-----------------------------------------------------------------------------
     (1)    NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NO.
            OF ABOVE PERSONS (ENTITIES ONLY)
                                              Scout Capital Partners II, L.P.
-----------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
                                                                  (a)  [X]
                                                                  (b)  [ ]
-----------------------------------------------------------------------------
     (3)    SEC USE ONLY
-----------------------------------------------------------------------------
     (4)    CITIZENSHIP OR PLACE OF ORGANIZATION
                            Delaware
-----------------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                                                -0-
SHARES         ______________________________________________________________

BENEFICIALLY   (6)  SHARED VOTING POWER
                                                223,256
OWNED BY       ______________________________________________________________

EACH           (7)  SOLE DISPOSITIVE POWER
                                                -0-
REPORTING      ______________________________________________________________

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                                                223,256
-----------------------------------------------------------------------------
     (9)    AGGREGATE AMOUNT BENEFICIALLY OWNED
            BY EACH REPORTING PERSON
                                                223,256
-----------------------------------------------------------------------------
     (10)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES **                       [ ]
-----------------------------------------------------------------------------
     (11)   PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (9)
                                                0.84%
-----------------------------------------------------------------------------
     (12)   TYPE OF REPORTING PERSON **
                                                PN
-----------------------------------------------------------------------------
                     ** SEE INSTRUCTIONS BEFORE FILLING OUT!






CUSIP No. 073685109                 13GA                   Page 4 of 12 Pages

-----------------------------------------------------------------------------
     (1)    NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NO.
            OF ABOVE PERSONS (ENTITIES ONLY)
                                                        Scout Capital, L.L.C.
-----------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
                                                                  (a)  [X]
                                                                  (b)  [ ]
-----------------------------------------------------------------------------
     (3)    SEC USE ONLY
-----------------------------------------------------------------------------
     (4)    CITIZENSHIP OR PLACE OF ORGANIZATION
                            Delaware
-----------------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                                                -0-
SHARES         ______________________________________________________________

BENEFICIALLY   (6)  SHARED VOTING POWER
                                                265,855
OWNED BY       ______________________________________________________________

EACH           (7)  SOLE DISPOSITIVE POWER
                                                -0-
REPORTING      ______________________________________________________________

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                                                265,855
-----------------------------------------------------------------------------
     (9)    AGGREGATE AMOUNT BENEFICIALLY OWNED
            BY EACH REPORTING PERSON
                                                265,855
-----------------------------------------------------------------------------
     (10)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES **                       [ ]
-----------------------------------------------------------------------------
     (11)   PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (9)
                                                1.00%
-----------------------------------------------------------------------------
     (12)   TYPE OF REPORTING PERSON **
                                                OO
-----------------------------------------------------------------------------
                     ** SEE INSTRUCTIONS BEFORE FILLING OUT!






CUSIP No. 073685109                 13GA                   Page 5 of 12 Pages

-----------------------------------------------------------------------------
     (1)    NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NO.
            OF ABOVE PERSONS (ENTITIES ONLY)
                                             Scout Capital Management, L.L.C.
-----------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
                                                                  (a)  [X]
                                                                  (b)  [ ]
-----------------------------------------------------------------------------
     (3)    SEC USE ONLY
-----------------------------------------------------------------------------
     (4)    CITIZENSHIP OR PLACE OF ORGANIZATION
                            Delaware
-----------------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                                                -0-
SHARES         ______________________________________________________________

BENEFICIALLY   (6)  SHARED VOTING POWER
                                                1,734,145
OWNED BY       ______________________________________________________________

EACH           (7)  SOLE DISPOSITIVE POWER
                                                -0-
REPORTING      ______________________________________________________________

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                                                1,734,145
-----------------------------------------------------------------------------
     (9)    AGGREGATE AMOUNT BENEFICIALLY OWNED
            BY EACH REPORTING PERSON
                                                1,734,145
-----------------------------------------------------------------------------
     (10)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES **                       [ ]
-----------------------------------------------------------------------------
     (11)   PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (9)
                                                6.49%
-----------------------------------------------------------------------------
     (12)   TYPE OF REPORTING PERSON **
                                                IA
-----------------------------------------------------------------------------
                     ** SEE INSTRUCTIONS BEFORE FILLING OUT!






CUSIP No. 073685109                 13GA                   Page 6 of 12 Pages

----------------------------------------------------------------------------
     (1)    NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NO.
            OF ABOVE PERSONS (ENTITIES ONLY)
                                                                   Adam Weiss
-----------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
                                                                  (a)  [X]
                                                                  (b)  [ ]
-----------------------------------------------------------------------------
     (3)    SEC USE ONLY
-----------------------------------------------------------------------------
     (4)    CITIZENSHIP OR PLACE OF ORGANIZATION
                            United States
-----------------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                                                -0-
SHARES         ______________________________________________________________

BENEFICIALLY   (6)  SHARED VOTING POWER
                                                2,000,000
OWNED BY       ______________________________________________________________

EACH           (7)  SOLE DISPOSITIVE POWER
                                                -0-
REPORTING      ______________________________________________________________

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                                                2,000,000
-----------------------------------------------------------------------------
     (9)    AGGREGATE AMOUNT BENEFICIALLY OWNED
            BY EACH REPORTING PERSON
                                                2,000,000
-----------------------------------------------------------------------------
     (10)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES **                       [ ]
-----------------------------------------------------------------------------
     (11)   PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (9)
                                                7.49%
-----------------------------------------------------------------------------
     (12)   TYPE OF REPORTING PERSON **
                                                IN
-----------------------------------------------------------------------------
                     ** SEE INSTRUCTIONS BEFORE FILLING OUT!






CUSIP No. 073685109                 13GA                   Page 7 of 12 Pages

----------------------------------------------------------------------------
     (1)    NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NO.
            OF ABOVE PERSONS (ENTITIES ONLY)
                                                               James Crichton
-----------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
                                                                  (a)  [X]
                                                                  (b)  [ ]
-----------------------------------------------------------------------------
     (3)    SEC USE ONLY
-----------------------------------------------------------------------------
     (4)    CITIZENSHIP OR PLACE OF ORGANIZATION
                            United States
-----------------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                                                -0-
SHARES         ______________________________________________________________

BENEFICIALLY   (6)  SHARED VOTING POWER
                                                2,000,000
OWNED BY       ______________________________________________________________

EACH           (7)  SOLE DISPOSITIVE POWER
                                                -0-
REPORTING      ______________________________________________________________

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                                                2,000,000
-----------------------------------------------------------------------------
     (9)    AGGREGATE AMOUNT BENEFICIALLY OWNED
            BY EACH REPORTING PERSON
                                                2,000,000
-----------------------------------------------------------------------------
     (10)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES **                       [ ]
-----------------------------------------------------------------------------
     (11)   PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (9)
                                                7.49%
-----------------------------------------------------------------------------
     (12)   TYPE OF REPORTING PERSON **
                                                IN
-----------------------------------------------------------------------------
                     ** SEE INSTRUCTIONS BEFORE FILLING OUT!






CUSIP No. 073685109                 13GA                   Page 8 of 12 Pages

Item 1(a).     Name of Issuer:

     The name of the issuer is Beacon Roofing Supply, Inc. (the "Company").

Item 1(b).     Address of Issuer's Principal Executive Offices:

     The Company's principal executive offices are located at 1 Lakeland Park
Drive Peabody, MA 01960.

Item 2(a).     Name of Person Filing:

     This statement is filed by:

          (i) Scout Capital Partners, L.P., a Delaware limited partnership
              ("Scout Partners"), with respect to the shares of Common Stock
              (defined in Item 2(d)) below directly owned by it;
         (ii) Scout Capital Partners II, L.P., a Delaware limited  partnership
              ("Scout  Partners  II"),  with  respect  to the shares of Common
              Stock directly owned by it;
        (iii) Scout Capital, L.L.C., a Delaware limited liability company
              ("Scout Capital"), with respect to the shares of Common Stock
              directly owned by Scout Partners and Scout Partners II;
        (iv)  Scout Capital Management, L.L.C., a Delaware limited liability
              company ("Scout Capital Management"), which serves as investment
              manager to Scout Capital Fund, Ltd. ("Scout Capital Fund") and
              Scout Capital Fund II, Ltd. ("Scout Capital Fund II"), each a
              Cayman Islands exempted company, and other discretionary managed
              accounts, with respect to the shares of Common Stock directly
              owned by Scout Capital Fund, Scout Capital Fund II and such other
              managed accounts (collectively, the "Accounts");
         (v)  Adam Weiss ("Mr. Weiss"), with respect to the shares of Common
              Stock directly owned by each of Scout Partners, Scout Partners II,
              Scout Capital Fund, Scout Capital Fund II and with respect to the
              Shares held by the Accounts managed by Scout Capital Management.
         (vi) James Crichton ("Mr. Crichton"), with respect to the shares of
              Common Stock directly owned by each of Scout Partners, Scout
              Partners II, Scout Capital Fund, Scout Capital Fund II and with
              respect to the Shares held by the Accounts managed by Scout
              Capital Management.

            The foregoing persons are hereinafter sometimes collectively
referred to as the "Reporting Persons." Any disclosures herein with respect to
persons other than the Reporting Persons are made on information and belief
after making inquiry to the appropriate party.






CUSIP No. 073685109                 13GA                   Page 9 of 12 Pages

Item 2(b).     Address of Principal Business Office or, if None, Residence:

     The address of the business office of each of the Reporting Persons is 640
Fifth Avenue, 22nd Floor New York, New York 10019.

Item 2(c).     Citizenship:

     Scout Partners and Scout Partners II are limited  partnerships  organized
under the laws of the  State of  Delaware.  Scout  Capital  and Scout  Capital
Management are limited  liability  companies  organized  under the laws of the
State of Delaware.  Mr. Weiss and Mr. Crichton are United States citizens.

Item 2(d).     Title of Class of Securities:

     Beacon Roofing Supply, Inc. $0.01 par value (the "Common Stock")

Item 2(e).  CUSIP Number:
     073685109

Item 3. If this statement is filed pursuant to Rules 13d-1(b) or 13d-2(b) or
(c), check whether the person filing is a:

          (a) [ ]  Broker or dealer registered under Section 15 of the
                   Act,

          (b) [ ]  Bank as defined in Section 3(a)(6) of the Act,

          (c) [ ]  Insurance Company as defined in Section 3(a)(19) of
                   the Act,

          (d) [ ]  Investment Company registered under Section 8 of the
                   Investment Company Act of 1940,

          (e) [ ]  Investment Adviser in accordance with Rule
                   13d-1 (b)(1)(ii)(E),

          (f) [ ]  Employee Benefit Plan or Endowment Fund in accordance
                   with 13d-1 (b)(1)(ii)(F),

          (g) [ ]  Parent Holding Company or control person in accordance
                   with Rule 13d-1 (b)(1)(ii)(G),

          (h) [ ]  Savings Association as defined in Section 3(b) of the
                   Federal Deposit Insurance Act,

          (i) [ ]  Church Plan that is excluded from the definition of an
                   investment company under Section 3(c)(14) of the
                   Investment Company Act of 1940,

          (j) [ ]  Group, in accordance with Rule 13d-1(b)(1)(ii)(J).

     If this statement is filed pursuant to Rule 13d-1(c), check the box.[X]






CUSIP No. 073685109                 13GA                  Page 10 of 12 Pages

Item 4.   Ownership.

      A. Scout Capital Partners, L.P.
             (a) Amount beneficially owned: 42,599
             (b) Percent of class: 0.16% The percentages used herein and in the
rest of Item 4 are calculated based upon the 26,688,564 shares of Common Stock
issued and outstanding as of December 1, 2005 as reflected in the Company's Form
10-K.
             (c)(i) Sole power to vote or direct the vote: -0-
               (ii) Shared power to vote or direct the vote: 42,599
              (iii) Sole power to dispose or direct the disposition: -0-
               (iv) Shared power to dispose or direct the disposition: 42,599

      B. Scout Capital Partners II, L.P.
             (a) Amount beneficially owned: 223,256
             (b) Percent of class: 0.84%
             (c)(i) Sole power to vote or direct the vote: -0-
               (ii) Shared power to vote or direct the vote: 223,256
              (iii) Sole power to dispose or direct the disposition: -0-
               (iv) Shared power to dispose or direct the disposition: 223,256

      C. Scout Capital, L.L.C.
             (a) Amount beneficially owned: 265,855
             (b) Percent of class: 1.00%
             (c)(i) Sole power to vote or direct the vote: -0-
               (ii) Shared power to vote or direct the vote: 265,855
              (iii) Sole power to dispose or direct the disposition: -0-
               (iv) Shared power to dispose or direct the disposition: 265,855

      D. Scout Capital Management, L.L.C.
             (a) Amount beneficially owned: 1,734,145
             (b) Percent of class: 6.49%
             (c)(i) Sole power to vote or direct the vote: -0-
               (ii) Shared power to vote or direct the vote: 1,734,145
              (iii) Sole power to dispose or direct the disposition: -0-
               (iv) Shared power to dispose or direct the disposition: 1,734,145

      E. Adam Weiss
             (a) Amount beneficially owned: 2,000,000
             (b) Percent of class: 7.49%
             (c)(i) Sole power to vote or direct the vote: -0-
               (ii) Shared power to vote or direct the vote: 2,000,000
              (iii) Sole power to dispose or direct the disposition: -0-
               (iv) Shared power to dispose or direct the disposition: 2,000,000

      E. James Crichton
             (a) Amount beneficially owned: 2,000,000
             (b) Percent of class: 7.49%
             (c)(i) Sole power to vote or direct the vote: -0-
               (ii) Shared power to vote or direct the vote: 2,000,000
              (iii) Sole power to dispose or direct the disposition: -0-
               (iv) Shared power to dispose or direct the disposition: 2,000,000






CUSIP No. 073685109                 13GA                  Page 11 of 12 Pages

Item 5.     Ownership of Five Percent or Less of a Class.

     Not applicable.

Item 6.     Ownership of More than Five Percent on Behalf of Another Person.

     Scout Capital, the general partner of Scout Partners and Scout Partners II,
has the power to direct the affairs of Scout Partners and Scout Partners II,
including decisions with respect to the disposition of the proceeds from the
sale of the shares. Mr. Weiss and Mr. Crichton are the principals and the
managing members of Scout Capital and in that capacity direct its operations.
Scout Capital Fund and other Accounts are clients of Scout Capital Management,
of which Mr. Weiss and Mr. Crichton are the principals and the managing members.
Each of the clients of Scout Capital Management has the power to direct the
receipt of dividends from, or the proceeds of sale of, such shares.

Item 7.     Identification and Classification of the Subsidiary Which
Acquired the Security Being Reported on by the Parent Holding Company.

     Not applicable.

Item 8.  Identification and Classification of Members of the Group.

     See Item 2.

Item 9.  Notice of Dissolution of Group.

     Not applicable.

Item 10.  Certification.

     Each of the Reporting Persons hereby makes the following certification:

          By signing below I certify that, to the best of my knowledge and
belief, the securities referred to above were not acquired and are not held for
the purpose of or with the effect of changing or influencing the control of the
issuer of the securities and were not acquired and are not held in connection
with or as a participant in any transaction having that purpose or effect.






CUSIP No. 073685109                 13GA                  Page 12 of 12 Pages

SIGNATURES

After reasonable inquiry and to the best of our knowledge and belief, the
undersigned certify that the information set forth in this statement is true,
complete and correct.

DATED:  February 14, 2006

                               SCOUT CAPITAL PARTNERS, L.P.
                               By:  Scout Capital, L.L.C.,
                                    General Partner

                               By:  /s/ Adam Weiss
                                    --------------------------
                                    Adam Weiss
                                    Managing Member
                               By:  /s/ James Crichton
                                    --------------------------
                                    James Crichton
                                    Managing Member

                               SCOUT CAPITAL PARTNERS II, L.P.
                               By:  Scout Capital, L.L.C.,
                                    General Partner

                               By:  /s/ Adam Weiss
                                    --------------------------
                                    Adam Weiss
                                    Managing Member
                               By:  /s/ James Crichton
                                    --------------------------
                                    James Crichton
                                    Managing Member

                              SCOUT CAPITAL, L.L.C.

                               By:  /s/ Adam Weiss
                                    --------------------------
                                    Adam Weiss
                                    Managing Member
                               By:  /s/ James Crichton
                                    --------------------------
                                    James Crichton
                                    Managing Member







                               SCOUT CAPITAL MANAGEMENT, L.L.C.

                               By:  /s/ Adam Weiss
                                    --------------------------
                                    Adam Weiss
                                    Managing Member
                               By:  /s/ James Crichton
                                    --------------------------
                                    James Crichton
                                    Managing Member

                               ADAM WEISS
                                 /s/ Adam Weiss
                               --------------------------------

                               JAMES CRICHTON
                               /s/ James Crichton
                               --------------------------------