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Archive for the ‘Inspection Tales’ Category

More on Ice Dams

Saturday, February 20th, 2010 by welmoed

Bob did an inspection shortly after the big snowstorm hit the DC area last week, and it provided a great opportunity to illustrate how poor insulation can cause big issues with ice dams.

Even though there were no indications of water intrusion in the interior of the house, it was obvious that there was ice damming going on.

Water from ice dams is seeping down the exterior wall

Water from ice dams is seeping down the exterior wall

Water has penetrated through the eaves on this house, and is seeping down the brick exterior, where it saturates the brick and refreezes. This can cause damage to the brickwork, shortening its life.

This bedroom had a cold spot in the corner.

This bedroom had a cold spot in the corner.

The ice dam evidence outside prompted Bob to pull out his Thermal Imager. Taking thermal images is not part of a regular home inspection; in this case he was using it to find possible water damage inside. Although he didn’t find water damage, he did find some examples of why the house had ice dams.

The bedroom corner lacked any insulation

The bedroom corner lacked any insulation

The thermal image revealed a joist space on an exterior wall without any insulation at all. This patch could allow warm air to escape into the attic space and cause the snow on the roof to melt from underneath.

Notice the snow has thinned between these two dormer windows.

Notice the snow has thinned between these two dormer windows.

Snow that melts unevenly can be a clue for where to look for missing insulation. Here, the space between these two dormer windows was a closet.

The roof over this closet had less snow than other areas.

The roof over this closet had less snow than other areas.

The thermal camera revealed the issue:

Missing insulation in the closet ceiling

Missing insulation in the closet ceiling

Another joist space was missing insulation. This space would be vulnerable to water damage.

Cold stripes on the ceiling

Cold stripes on the ceiling

Thermal pictures of one ceiling revealed cold stripes. When Bob got into the attic, he found the source.

Areas around the joists were not insulated properly

Areas around the joists were not insulated properly

Batts of insulation were compressed around trusses, leaving bare spots over some of the joist areas. The batts should have been cut to fit around the trusses. Also, whenever insulation is compressed, its R value is reduced.

You don’t necessarily need a thermal camera to find gaps in your insulation. All you need is a really cold day. Run your hand along the walls and ceilings, especially at the edges and corners. If one area feels cooler than the others, there’s a good chance it’s underinsulated.

Remodeling Perils and Pitfalls

Tuesday, February 9th, 2010 by welmoed

We often get calls from people asking if we can inspect their basement remodeling job because they have concerns. The answer is yes, we do perform remodeling inspections on a consulting basis, and have also been called to provide expert testimony in remodeling lawsuits. However, the best way to avoid the worst remodeling nightmares is to be fully informed about the process, and to carefully select who does the work.

Here are some suggestions to help you get through your remodeling project BEFORE you call us with concerns.

  1. A quality remodeling contractor should not ask you for more than a small deposit when you sign your contract, and will go to great lengths to explain your rights under both state and local laws, including any special jurisdictions’ additions. If a contractor demands a large up-front deposit, it could be a red flag: perhaps they don’t have adequate credit with their suppliers.
  2. A written contract is a must. The contract should specify the scope of work, the start and end date, the cost and payment schedule, and who will be performing the work.
  3. Ask for a copy of their license and proof of insurance. Check the license and ask that their insurance carrier MAIL you a cover page showing you as an insured.
  4. Make sure they are licensed for the work they are performing. A general contractor’s license is not an electrician’s or plumber’s license. Also, make sure the license is current; check with your state licensing authority.
  5. Check with the Better Business Bureau to see if there are past complaints about the company. You can also check on Angie’s List, or do a web search using the company’s name.
  6. Are they in permanently marked vehicles and using printed letterhead? Magnetic signs and “stock” contracts from the stationery store are not good indicators.
  7. Almost all but the smallest remodeling projects will require permits. Adding lights, outlets, switches and almost any plumbing work requires permits. If your contractor either says he can do it without permits, or wants YOU to pull the permits, you should seriously question why. Permits are to protect you. If you pull the permits, you are the responsible party, not the contractor. The person doing the work, or supervising it, should pull the permits.
  8. Work sites need to be clean, neat and orderly at the end of each and every work day. Messy worksites are dangerous to both you and the contractor’s workers.
  9. Don’t give final payment until ALL permits have been completed, finalled or otherwise acceptably closed and you have the paperwork in hand. Some of the best contractors will say that the last payment is due some period AFTER they have completed all of the work.
This unlicensed contractor left a hazardous mess on the worksite.

This unlicensed contractor left a hazardous mess on the worksite.

What can we inspect for you?

  • We SHOULD only be inspecting fit & finish as the electrical, plumbing and Heating/Cooling SHOULD be inspected by the local authority as part of the permit process.
  • We can only inspect what we can SEE. If the drywall is already installed, we can’t see the components.
  • We prefer to do “pre-drywall Inspections” when almost all of the infrastructure has been completed but the walls are not yet closed up. At this time we can see all the plumbing, electrical, insulation and ventilation components and take the time to inspect them carefully, possibly seeing things that the permit inspector missed due to constraints on his time.
  • We are happy to review ideas and plans as consultants, pointing out the things we have seen become problems in other (including our own) remodeling projects.
The same unlicensed contractor left a gaping hole in the living room floor before abandoning the homeowner.

The same unlicensed contractor left a gaping hole in the living room floor before abandoning the homeowner.

Got questions? Contact us about YOUR project and what we might be able to do for you.

Inspecting Challenges: “Winterized” Homes

Wednesday, January 27th, 2010 by welmoed

Many vacant homes in foreclosure or bank-owned are “winterized”, meaning the utilities are shut off. Prospective buyers will ask whether Bob can inspect such a house. The answer is generally “Yes, but why would you want him to?”

Bob can inspect the house, but many of the systems NORMALLY inspected as part of the inspection will need to be “disclaimed” or not inspected. This means Bob can look at items, but cannot tell whether they work. The stove/furnace/water heater may look fine, but without utilities, there is no way to know whether they work, or leak, or are unsafe.

If the gas is off

  • Can’t test gas furnace, water heater or stove
  • Can’t test gas fireplace inserts
  • Can’t detect gas leaks

If the water is off

  • Can’t test faucets, showers, toilets or tub
  • Can’t test water heater
  • Can’t test dishwasher
  • Can’t detect leaks in pipes or drains
  • Can’t test hose connections

If the electricity is off

  • Can’t test lights, outlets or switches
  • Can’t test GFCI (anti-shock) devices
  • Can’t test garbage disposal, electric ranges or ovens
  • Can’t test heat pumps

Winterized Houses Are Vulnerable
Modern houses are not designed to be kept out of their “comfort” temperatures. Houses that are allowed to swing wildly in temperature (and humidity) will have many more nail pops, drywall cracks, creaking floors and other symptoms, and may never completely recover. Cold and dry causes some issues, but HOT and WET can allow many other organic pests to invade and grow when humidity goes unchecked. As basements typically are cooler in the summer, unchecked humidity can cause natural condensation on basement surfaces, even IN and BEHIND walls where a typical visual home inspection won’t uncover them. Wood destroying organisms of the 6 legged variety love damp warm wood.

In addition, there’s the possible discomfort of trying to inspect a house with no heat during the colder months. Recently Bob was asked to inspect a vacant house that was SUPPOSED to have all the utilities on. When he got there it was 50 degrees OUTSIDE and 40 degrees INSIDE. The water and electricity had been turned on, but the gas had not and a hard deep freeze was in the forecast. He opened the house up to warm it to 50 degrees and told the selling agent to go buy some electric heaters to keep the house (and the water pipes) from freezing that night. Everyone wore their heavy coats during the inspection, including the client’s 1-year-old child who had to occasionally go spend time in the car with a parent to stay warm.

A Cautionary Tale
A few weeks ago, Bob scheduled a Home Inspection on a foreclosed house. The house had been “winterized”, and the inspection ended up being rescheduled four times, as each time the inspection date rolled around, the house was still awaiting “dewinterizing”. Finally, the realtor was assured that the house was ready. Bob drove up and saw a problem right away.

Water coming from under a garage door is not a good sign.

Water coming from under a garage door is not a good sign.

Even before he got into the house, he knew there were going to be BIG problems inside.

Water gushing from a disconnected pipe under the deck

Water gushing from a disconnected pipe under the deck

Once inside, Bob found that many of the faucets were turned on, gushing water into tubs and sinks. The shower in the Master Bath had been turned on, and the head was pointing out the open shower door, leaving standing water in the master bathroom, damaged drywall, and soaked wood throughout the house.

Water dripping from the garage ceiling

Water dripping from the garage ceiling

The water from the Master Bath seeped throughout the house, including the ductwork in the garage. See the water dripping from the bowed insulation?

Water from the Master Bath damaged the ceiling of the first floor bathroom.

Water from the Master Bath damaged the ceiling of the first floor bathroom.

How did this happen? When the house was “winterized”, the faucets were opened to facilitate draining the pipes. The crew that came to “dewinterize” did not examine the house at all; they merely turned the water back on and left immediately. As a result, the water was left running for nearly a full day before Bob and his client arrived. The result? Probably several thousand dollars in repairs. If the water issues are not addressed quickly, the costs could quickly escalate.

The Bottom Line
If YOU are Winterizing a house, keep the heat/cooling on and set it for 55/85 as this will reduce costs while still keeping the HOUSE within its limits. If you stray too much outside this range, you are risking cosmetic damage at a minimum. Make sure you keep a close eye on the property, and walk through the house frequently to spot problems like leaks.

If you are BUYING a winterized home, INSIST that it be de-winterized for the Home Inspection.  If the ONLY thing stopping a possible sale is the Home Inspection, the seller should agree. De-winterization may uncover more than broken appliances and pipes, as the utility companies may want back bills paid before they turn the utilities back on, and these bills could come as a surprise later. Yes, they are supposed to be caught at closing, but sometimes they do get missed and then the buyer is left to pay them or face a protracted battle to get additional money from the (now gone) seller or remote mortgage holder.

Attics and Access

Monday, November 2nd, 2009 by Inspector Bob

Most new homes don’t have traditional attics, but rather “attic crawl spaces”. These spaces aren’t really intended for regular use, or even for storage, but rather as utility spaces for air handlers, ductwork, wiring and ventilation. Often the roof trusses prevent a person from being able to stand up straight, further limiting the usability of the space.

This is not storage space.

This is not storage space.

Because these spaces aren’t meant to be accessed frequently, it’s often difficult or inconvenient to reach them. If there are no utilities or systems installed in the attic space, such as air handlers, the access is usually limited to a simple framed hatch in the ceiling, requiring the owner to set up a ladder to get into the attic. These hatches can sometimes be tricky to spot: they are commonly tucked into closets.

If there is equipment in the attic, there may be a pull-down staircase specifically designed for attic access (but not always; I’ve inspected a house that had an air handler in the attic, with absolutely no access to the space at all!).

Access stairs need to reach the floor.

Access stairs need to reach the floor.

Spliced Legs

The stairs were just a little too short, so they "fixed" them.

These stairs come in many different forms, and new styles are constantly being introduced. But they all have something in common: they need to be installed correctly.

Read Label: Install Incorrectly Anyway

Instructions weren't missed... Just disregarded.

Instructions weren't missed... Just disregarded.

I have lost count of the number of attic stair units I have seen which are installed incorrectly (to the point of being unsafe to use), even though the installation instructions are clearly marked on the unit itself. Traditional wooden units are designed to be securely nailed  (with 16d nails or ½” lag bolts) into the attic joists, yet I still see many, many instances where drywall screws or even finishing nails are used. Whenever I encounter a stair unit screwed in rather than nailed, I warn my client to stay clear while I go up them, because if I hear the slightest creak I will be heading back down VERY fast.

Because It’s There

It can be tempting to view the vast open spaces of today’s truss roof as the perfect storage spot. After all, our grandparents stored their stuff in attics for years. But keep in mind that much of what they stored was natural material: cotton, wool, linen and the like. Today’s synthetics simply cannot withstand the same temperature fluctuations, and could deteriorate very quickly. Also, compressing the insulation will greatly diminish its effectiveness, costing you money in heating and cooling.

A Quick Hint

Keep the landing spot clear.

Keep the landing spot clear.

If your pull-down stairs are located in the garage, one common problem is having things in the way when you want to pull the stairs down. To help prevent this, mark out an area around the spot where the stairs meet the floor, and keep that area clear.

Help! My House Will Be Inspected!

Monday, October 19th, 2009 by Inspector Bob

writinginspection

Often times I have to “disclaim” items on the inspection report because I cannot get to them, or they are not in inspectable condition. If your home is under contract and you are expecting the buyer’s home inspector, here are some simple things you can do to be ready.

Make sure key components are accessible. These include all doors and windows, attic access, HVAC system, water heater, and all electrical panels.

Access does not just mean “I can see it.” I need to be able to touch, operate and possibly open things. I need to be able to REMOVE the cover to the electrical panel, not just open the door, so any framing that blocks the cover screws needs to be removed. If you have caulked or painted the frame of the electric panel, please pre-score around the edge with a sharp blade; otherwise removing the panel cover may mar the wall. If the attic access pull-down stairs are in the attic, move any obstacles (cars, boxes, tools) beneath the access.

Provide keys to all doors and windows. Windows that are locked or bolted shut will be noted as “inoperable” and possibly as a safety hazard if they are an egress opening.

Pull out your receipts and records. If you have service records for the heating/cooling system, put them out for inspection. ALL manufacturers call for at least annual service, and if there is no evidence of it I will call for it to be done, possibly AGAIN if you don’t have (readable) receipts.

Show that work was done right. All improvement work needs to be done by licensed and bonded contractors or authorized companies, and receipts need to be on readable printed company letterhead.

Take advantage of the dishwasher test. If you want, you may leave the dishwasher ready to run. Put the dirty dishes and soap in the unit with a note of which cycle to run it on; otherwise I will run a “quick” cycle.

Check your wiring. Extension cords are generally frowned upon, as are ground adapters and light socket adapters. Make sure there are no exposed wire nuts.

Try all the lights. Replace any burned out bulbs, especially on single-bulb fixtures. Otherwise I might call out the fixture as inoperable, and you can replace bulbs much cheaper than an electrician can.

Check your house before the inspection. Run appliances. Flush toilets, run sinks, baths and showers. Check to make sure all the windows and doors open. Fix the minor problems BEFORE the inspection. You may be able to fix minor issues yourself; if I have to write them down I will call for them to be fixed by an authorized, certified manufacturer’s representative or licensed contractor, which will mean a MUCH more expensive repair. If you have things you know need repairing, do them BEFORE I get there.

If you have any other questions on getting ready for a home inspection, or any other aspect of home inspections, feel free to give us a call at (301) 208-8289, or email bob@inspectionsbybob.com

My Interview with Adam Iobst

Thursday, July 16th, 2009 by Inspector Bob

Earlier this week I was contacted by Adam Iobst, a realtor with A-Team Home Sales, to do an interview for his online Home Buyer Radio Show. He asked me to explain why home inspections are so important when buying a home.

Part Two of the interview will be posted in the near future!

There are WHAT in the attic?!?

Saturday, July 11th, 2009 by Inspector Bob

Recently I inspected an older home, and when the time came to go up into the attic I immediately spotted something suspicious along the edge of the gable wall.

Something suspicious

Something suspicious

It looked a lot like some sort of animal waste, so my next step was to go back to my car for my full respirator mask. Animal feces can carry a multitude of pathogens, and then there’s the smell!

Back in the attic, I started to search for the source of the waste. Then I heard the squeaks… and looked up.

The source of the waste.

The source of the waste.

Yep, it was a colony of bats. Judging from the piles of guano, they had been living in the attic for many years. The owner had never ventured up into the space.

Not something to mess with!

Not something to mess with!

Bats are very beneficial to the environment (a single bat can eat between 600 and 1000 mosquitos in an HOUR!), but they also can pose a risk of rabies. It can be difficult to eradicate bats from an attic, as they can fit through holes as small as an inch wide.

For more information about bats, including ways to exclude them from your home, please visit the Organization for Bat Conservation.

Hot, Hotter… Too Hot!!

Friday, June 5th, 2009 by Inspector Bob

Why don’t I go into very hot attics?

Essentially, because I might not make it out alive. Yes, a hot attic can be fatal. We have all read about dogs and children being killed in hot cars, but your ATTIC can be just as bad, if not worse, because it has been cooking all day in hot sunshine.

Temperatures this high can be fatal.

Temperatures this high can be fatal.

I routinely see attic temperatures well above 140 degrees, and at those temperatures, even if there is a pull down stair and an adequate walkway, just entering it can be dangerous. Contact burns are very likely at those temperatures; touching wood will hurt, and touching a metal surface such as a bare pipe, truss-plate or nail will burn the skin within a few seconds.

Getting the Facts

When I went looking for information for this post, I called OSHA, NIOSH, CDC, the fire Department, ASHREA and many more agencies, and scoured the internet for rules, standards and recommendations. There were none; lots about the symptoms of heat stroke, and that it can kill, how to treat it, drinking water and more, but nothing about how hot and how long. Then I found a VERY good document published by, of all people, the Coast Guard.  Wow… I like the internet.

The Coast Guard has the best documentation on exposure vs. temperature.  Interestingly, their chart STOPS at 125 degrees F.  Speaking with one of the authors of the document, the reasoning was that the Coast Guard  would be unwilling to subject their people to temperatures higher than that.  At 125 degrees, the working time appears to be about 7 minutes.

The chart below gives the accepted work times (Personnel Heat Exposure Limits) for three different levels of activity. The “A” times are for the least amount of activity (just standing in the room); the “C” time is heavy activity (such as lifting or constant motion). As a Home Inspector, I would follow the “B” curve — I’m moving around, but not doing heavy work.

Source: US Coast Guard

Source: US Coast Guard

So, for a 125-degree attic, my maximum exposure time is about 15 minutes; after that, I’m in serious danger.

What About the Stuff?

People aren’t alone in suffering ill effects from attic heat. Furnaces and heat pumps installed in attics don’t last as long as units in basements. They wear out VERY Fast. Even if the unit has 3/4″ of insulation on the cabinet, if the attic is 146 degrees, and you are trying to cool air to 68 degrees, you are going to have issues including stress on the equipment, condensation, thermal deformation and more. Never mind trying to service it during a heat wave (or touching the metal cabinet). No technician should attempt a repair in such a brutal environment.

As for storing stuff up there: DON’T. Natural materials such as cotton, wool, silk, or leather, will usually tolerate temperature extremes. But synthetics such as polyester, nylon, plastic and other “modern” materials and fabrics can melt, deform, stick, release toxic fumes, and otherwise are heavily damaged by exposures to such temperatures.

Attic Fans

Attic Fans are a MUST if your roof has no shading from trees, and is highly recommended for any roof with significant southern exposure. Passive “ridge vents” are not enough; on stagnant, humid days they are pretty much ineffective, and that’s when you’d need the most ventilation help.

It’s important to choose the correct fan, and install it properly. This is an example of a correctly installed attic fan.

Properly installed attic fan

Properly installed attic fan

Here’s a very creative solution spotted during a past inspection. It’s really not wise to improvise when safety is at stake.

This is NOT an attic fan. At least, it shouldn't be.

This is NOT an attic fan. At least, it shouldn't be.

Installing a fan isn’t enough; you need to run power to it as well!

Attic fans need electricity to work!

Attic fans need electricity to work!

A excessively hot attic can degrade the shingles, the roof decking, any equipment in the attic, the wiring in the attic, affect your cooling bill (substantially) and more.

How hot is too hot?

It looks like about 120 degrees is the 1/2 hour limit, and that is also the maximum recommended temperature setting for water heaters, among other things. That is what MY attic fans are set for.

I carry a laser thermometer to check attic temperatures before venturing up the ladder. On hot summer days, I will inspect the attic space first, before it’s had the chance to heat up — but even then, it might still be too hot to enter.

Don’t take chances with a hot attic. You can be overcome by heat and find yourself unable to reach safety before succumbing.

This one really took me by surprise.

Tuesday, June 2nd, 2009 by Inspector Bob

During most inspections, I’m keeping an eye out for structural defects. Today, I spotted something I’d never seen before.

"Mama told me to stay right here until she came back."

"Mama told me to stay right here until she came back."

This little baby fawn was nestled up against a corner of the foundation wall. It never budged. Mama wasn’t far away, nibbling on the landscaping.

New Home Insulation

Sunday, February 22nd, 2009 by Inspector Bob

Recently I was inspecting a home at the “Pre-Drywall” stage. This is the last time we can see what goes on INSIDE the walls so it is relatively important.

What I saw was not good. My client had paid EXTRA for more insulation, house wrap and other things that were SUPPOSED to save them money in the long run. The insulation contractor had gotten there late in the day and was in a rush to get the job completed so they wouldn’t get fined. Remember this is PRE-DRYWALL; there is no power in the house yet, but they started at about 3:30pm and were still at it when I left, well after dark.

I saw, and documented, enough to have my client insist that the job be-redone by the book.

Insulation Basics

Insulation works to stop the flow of heat by radiation, conduction and convection. If insulation is improperly installed, one or more of these methods on heat transfer will still exist and will cost you money, every month for as long as you own the house.

Insulation needs to be fluffy to work. I think we have all heard that if you compress insulation that the insulative value will be reduced, and it can be reduced substantially.

Insulation needs to completely fill the cavity that it is trying to insulate to be effective and should touch all 6 surfaces. There should be no voids or pockets where air can travel.

Insulation needs to be protected from drafts. Insulation is meant to stop heat, not air. If there is a hole in the exterior sheathing around a fixture, pipe, wire or other penetration, air will come in and disrupt the insulative value of the insulation.

Installing insulation properly takes time, as each piece needs to be the right size for each cavity. Not too long so it is scrunched up at the end. Not too short so there is a gap.  If there are ANY wires, pipes or other obstacles in the way, the insulation needs to be cut AROUND the obstacle so that the obstacle does not compress the insulation and a void is not left behind, or in front of the insulation.

Unfortunately, what I saw was insulation that was stuffed into the cavities, and then stapled to the SIDES of the studs, leaving a vertical channel from the floor to the ceiling. The insulation was often too long and scrunched at the top and stuffed in. It was torn to fit around outlets, and there was no insulation behind outlets and switches (ever wonder why there is a draft coming from that switch on the outside wall?). Insulation was stuffed behind pipes and wires, or on top of them. Overall it was scary.

Oh yes, they had a new guy working, he had done one room “by the book” and it looked GREAT.  The insulation surface was smooth with no voids, gaps or compressions. Each piece was the right length; but he took too long to do it right.

What The Client Paid For

The following is a picture of a NICE WALL…

This is how insulation should look.

This is how insulation should look.

What The Client Got

Insulation torn away from around electrical boxes

Insulation torn away from around electrical boxes

Batts stuffed into spaces rather than being cut to size

Batts stuffed into spaces rather than being cut to size

Bats pushed behind pipes, leaving gaps and air channels

Bats pushed behind pipes, leaving gaps and air channels

The insulation doesn't fill the entire cavity, leaving large air gaps

The insulation doesn't fill the entire cavity, leaving large air gaps

Even the builder’s PLANS said to face staple…

The builder's installation specifications

The builder's installation specifications

…but that isn’t what the client was going to get. In insulation, neatness and precision really, really count.

Thinking About Insulating?

I have put together a collection of the best brochures and technical bulletins on how to install insulation. Download it here (warning: large PDF file — 2.1Mb). This file has information from many different sources, all saying the same thing over and over again, and even using the same illustrations. If you’re in the process of adding insulation, show this to your contractor and insist on proper installation.


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