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    • Home
    • Duffy's DVD's
    • Duffy's Book's
    • Services Provided
    • Duffy's Classes
    • About Duffy
    • Contact Duffy
    • Testimonials
  • Home
  • Duffy's DVD's
  • Duffy's Book's
  • Services Provided
  • Duffy's Classes
  • About Duffy
  • Contact Duffy
  • Testimonials

Duffy Hoffman Preservation Specialist
Restoring Homes Since 1988

Duffy Hoffman Preservation Specialist Restoring Homes Since 1988Duffy Hoffman Preservation Specialist Restoring Homes Since 1988Duffy Hoffman Preservation Specialist Restoring Homes Since 1988

Duffys classes

OLD HOUSE GARDEN DOCTOR

Function of an old structure and how your gardens and shrubs affect your old home.

How to make it work for your home and to apply it.  Going to historic structures and observing potential problems and finding the solutions.

PAINT PRATICES FOR HISTORIC STRUCTURES INTERIOR AND EXTERIOR

Learn why paint coatings fail and names of common paint failures and how to pinpoint and remedy them. You will also learn how to wash and prep the structure and pick out an effective paint, as well as learning how to maintain it after.


As well as learning paint history as well as how to write a scope of work.

SNUG AND SOUND RESTORATION & WEATHERIZATION OF WINDOW FRAMES AND SASHES

Learn about the restoration of wood windows frames, including paint removal and epoxy repair.  Follow sash restoration projects from start to finish including removal, repair, reinstallation, paint removal and reapplication of glazing and reinstallation.  Examine the pros and cons of window weatherization, including effects of storm windows.

PLASTER WALL REPAIR

Plaster wall stabilization, history of plaster wall systems and materials used.  What products and how a plaster wall functions and why.

RESTORATION AND REPAIRS ON HISTORIC PORCHES

Learn how it was put together to function over time.  Materials to be used and why, epoxy repairs and Dutchmen's.  Avoid common mistakes that are made when repairing a porch on a period home.

FUNCTION AND VENTILATION IN A HISTORIC STRUCTURE

Learn the original way the structure works and what happens when we change it.  We will teach you how to compensate for the changes.

Repair the problem rather than fix the damage.  Show how structure was meant to breath and pros and cons on installation.  How to make it work better today without devastating structures integrity.

STABILIZATION AND MAINTENANCE OF A HISTORIC STRUCTURE

Learn methods of stabilization, how to maintain the restoration every year rather than total restoration and learn cost effectiveness of the systems in place.  You can also learn how to cost average your projects.

MOTH BALLING A HISTORIC STRUCTURE

Hands on structure as class, go through all the methods and why's you should do proper moth balling.

COURSE MATERIALS NEEDED

  • Respirators, N-11 Masks, Clothing, and personal protection safety glasses etc. 

TEACHER COSTS

  • $500 per day.  Depends on how many days consecutive in a row.
  • Gas, food and lodging could be at an individual's home to cut costs. 

Contact duffy to schedule a class

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Duffy Hoffman Preservation Specialist

215.262.0729


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