How to Look

at a House


A blog with answers
to your questions about
HOME INSPECTION
and HOME MAINTENANCE


More blog posts about roofing:

  1. I’m buying a ‘50s house with a “gravel” roof. Is the roof going to be a problem.

  2. What are the right words for talking about a roof?

  3. Should I buy a house that needs a new roof?

  4. What is the cost difference between asphalt shingle and metal roofing?

  5. What is the minimum pitch of an asphalt shingle roof?

  6. What’s the difference between a gable roof and a hip roof?

  7. What do you look for when you inspect a roof?

  8. What is roof pitch?

  9. What’s the difference between a roof inspection and a roofing estimate?

  10. What are the most common problems with older houses?

  11. I saw some staining on the ceiling. Do you think the roof is okay?

  12. What is a “cool roof”?

  13. Can metal roofing be used on a slow slope/pitch roof?

  14. How many layers of roofing are allowed on a home?

  15. How can I be sure my roofing contractor got a permit?

  16. What is the difference between plywood and OSB?

  17. Does it cost more to roof a hip roof than a gable roof?

  18. What is an H-clip?

  19. If my roof is not leaking, why does it need to be replaced?

  20. What causes a lump or dip in the roof?

  21. What are the most common problems with wood roof trusses?

  22. What is the difference between roofing felt and synthetic underlayment?

  23. Why is a popped nail in a shingle roof a problem? How do I fix it?

  24. What is an SPF roof?


More blog posts on related subjects:

  1. How can I tell if a house has insulation?

  2. What are the warning signs of a dangerous deck?

  3. Does it make sense to buy an older mobile home and remodel it?

  4. How do you determine when the house was built?

  5. Should I buy a fixer-upper?

  6. How do I remove cigarette odor in a house?

  7. The house has asbestos siding. What should I do?

  8. How do I get insurance if my home can’t pass a 4-point inspection?

  9. There’s an old fuel oil tank underground in the yard. Is it a problem?

  10. What is “knob and tube” wiring?

  11. Why do the floors slope in this old house?

  12. The garage has been converted to a family room. Is that alright?

  13. What is the minimum pitch for a metal roof?

  14. What does “lack of tab adhesion” in an asphalt shingle roof mean?

  15. What is a TPO roof?

  16. What are the roof sheathing requirements for a roof replacement in Florida?

  17. What is the difference between galvanized and galvalume metal roofing?

  18. Is a ridge board/beam required for a roof framed with rafters?

  19. What are the different roof deck attachment discount categories for a wind mitigation inspection?

  20. What is the difference between roll roofing and modified bitumen?

  21. What is a roofing boot?

  22. Why is it a mistake to replace and roof not replace its flashings?

  23. What are the hazards to avoid when going into an attic?

  24. What are roofing purlins and battens?

  25. What is a “square” of roofing?

  26. How can I tell if a roof has more than one layer of shingles?

Welcome to our blog!
We want you to be an informed homebuyer, and each blog post is a question that we have answered for our friends and customers over the years. Hope they help you make a good choice for your next home.

  1. 4)Coat the roof with an elastomeric paint only as last resort. It will void the roofing manufacturer’s warranty and, although it can seal small defects in the shingles for a couple of years, the coating does nothing to repair the lack of tab adhesion that comes with age, and an older roof will continue to be vulnerable having shingles snapped off in a storm.

  2. 5)Never pressure-wash the roof to clean it. No matter how careful you are, a pressure-washing blows off too much of the protective granules on the surface of the shingles and deteriorates the tab adhesion.

  3. 6)Do not allow the roof to be walked on any more than is necessary for maintenance. Foot traffic scuffs the surface, and those areas will deteriorate faster than the rest of the roof.


While we hope you find this series of articles about home inspection helpful, they should not be considered an alternative to an actual home inspection by a local inspector. Also, construction standards vary in different parts of the country and it is possible that important issues related to your area may not be covered here.
©2015 - McGarry and Madsen Inspection.

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