Slate Roofing Contractors Association of North America, Inc.

Contractor Profile:

American Custom Contractors

American Custom Contractors

Membership Category: Slate Roofing Contractor

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General Information

1. BUSINESS NAME: American Custom Contractors

2. CONTACT PERSON:  William Giakoumatos

3. BUSINESS TYPE:   Corporation

4. ADDRESS:   15728 Crabbs Branch Way, Rockville, MD 20855

5. PHONE NUMBER:  (301) 417-1000

6. STATE WHERE INCORPORATED:   Maryland                                                       Year of Incorporation: 1999

7. YEARS IN BUSINESS under current ownership:  10                                Years in business under present name:   10  


8. FULL TIME EMPLOYEES (Average No.): 10


9. PART TIME EMPLOYEES (Average No.):  15


10. WORK RANGE:  Maryland – Montgomery, Howard, Frederick & Prince George Counties

                                  Washington, DC

                                   Virginia – Fairfax and Loudon Counties


11.List any TRADE ORGANIZATIONS to Which You Now Belong:  NRCA, BARI, BTA, Certified Contractors Network


12. CRIMINAL HISTORY: Has the above named business, including principals, partners, officers, owner, or any employee, been convicted of any business related crimes in the past 15 years?   No

13. LICENSE REVOCATION: Have you ever had a business license revoked?  No


14. LIABILITY INSURANCE Company:  USF Insurance, Federal Insurance Federation (broker)


Experience Level


16. I have been actively involved in the slate roof contracting business for the past five continuous years.  Yes

17. I, or my employees, have worked on, repaired, installed and/or restored slate roofs for at least the past five continuous years:   Yes      

18. At least 75% of the number of annual roofing contracts I fulfill each year are slate roofing contracts, OR my company does at least $500,000.00 per year of slate roofing contracts:  Yes     

19. If your annual percentage of slate roofing contracts is less than 75% of your total roofing, what percentage of your roofing contracts do you estimate to be slate roofing contracts?  20%

20. What estimated percentages of contracts in the following roofing categories do you engage in annually? % below do not include slate

21. asphalt shingles        60  %

single ply                  2.5 %              

built-up roofing            2.5  %

cedar shakes           25%

22. ceramic tile                0 %

cement shingles            0%

imitation slate                10   %

metal                        %

23. Other (explain):

24. What percentage of your business contracting does not including roofing at all?  30%

25. What other types of contracting services do you provide other than roofing (e.g. carpentry, siding, heating)?  Siding, windows, doors, gutters, insurance restoration

26. Do you subcontract slate roofing work to other contractors?  Yes – Traditionally we do not, occasionally we do to a crew that we have a 15 + year relationship with.

27. How are your roofing professionals trained? On-site field experience, working on repairs until mastered, then transitioning to replacements

28. Do you do FLAT-LOCK (SOLDERED) COPPER roofing?   Yes     

29. Do you do STANDING SEAM metal roofing?  Yes       

30. Do you repair ASBESTOS SHINGLE roofs?       No    

31. Do you install RAIN SPOUTING on slate roofs?   Yes   

32. Do you do MASONRY WORK in association with slate roofs (such as chimney rebuilding)?   Yes        

33. Do you do ARCHITECTURAL SHEET METAL work (such as ornamental copper)?   Yes

34. Do you do STEEPLE WORK?   Yes        

35. How do you access steep slate roof areas when doing repairs?  Ladder jacks, scaffolding

36. What is your preferred method(s) for installing a replacement slate when doing a repair in the field of the roof? Slate hook method

37. Do you sell salvaged roofing slates?      No                                  If yes, do you ship them?  

38. Do you keep a stockpile of salvaged slates?      No                          If yes, approx. how many squares?

39. Do you sell new roofing slate?       No                                             If yes, do you stock them?    

40. Do you do slate roof installations as well as repairs? Yes         

41. What is the maximum size, in squares, of a new slate roof installation your company will do? No maximum size

42. Do your roofing professionals have certified professional training? If yes, explain (include the names of the individuals):

43. Name(s) of your slating professionals

Years of Experience


Name(s) of your slating professionals

Years of Experience


Alex Giakaumatos

50 +

Fernando Luna


Jose Estrada


William Giakoumatos


Gabriel Portillo


Demetri Giakoumatos


Jae Kim


John Gallien


44. SRCA MEMBER SINCE: March, 2011