Archive for May, 2010

Hail Damaged Roof

Monday, May 17th, 2010

A quick Q & A when it comes to hail damage and your home:

What does hail damage on my roof look like?

Asphalt shingle hail damage

Asphalt shingle hail damage

You can see the dark spots where the granules are knocked off, this is where the shingle will start to fall apart. As the sun makes the asphalt base brittle more and more granules will fall off. Within a pretty short amount of time your roof will look like its 30 years old.


What happens when hail hits my house?

If the hail is large enough and flying fast enough it can dent your siding and gutters, it can crack your skylights and even make holes in vinyl siding.

What about my roof?

When hail strikes asphalt shingles if can blow off the granules on the face of the shingle. The face of asphalt shingles is made up of ceramic granules, the granules give the shingle it’s color but more importantly they protect the asphalt base of the shingle from the sun. When asphalt is exposed to the sun it will age exponentially, the suns ultraviolet rays make the asphalt in the shingle brittle. When the shingles become brittle they fail; you have seen old cracked neglected asphalt driveways, now think of a parking lot or driveway that has been sealed. Same principle, the sealant on the driveway does the same job that the tiny granules do on the roof.

My roof looks fine from the ground…

Most of them do, however the only way to check for hail damage is to go up on the roof and look. If the hood of your car is dented, if you can see dents in the gutters or if there is dented or cracked siding then chances are the roof took a beating too.

What do I do now?

First; protect your house. If the skylight was shattered or a vent was torn off in the wind you should call a licensed roofing contractor to cover anything that might lead to more damage to your house.

Second; call and file an insurance claim. If your house has a lot of damage your insurer will send out a claims adjuster. If the hail damage is widespread it might take a while to get a representative to you. After big storm events independent adjusters will come in from all over the country to work through the claims; most claims are settled within three weeks.

Third; get estimates for repairs. It will make the process a lot easier if you have an estimate for the repairs when the adjuster meets you at the house. The adjuster will make determinations of what he will cover and what he won’t; the insurance company may pay for an entire new roof or they may pay for re-roofing one damaged area.

Can you replace the roof, gutters and siding?

Yes we can. We do it all the time.

Do I have to replace my roof or siding now?

No, you don’t. However prices for roofing, siding and gutters go up every year, your insurance company is paying you a fractional amount of what the work costs today. By not replacing the damaged parts of your house now you will be left to pick up the difference later. Also some insurance companies have cut off dates for allowing claims; if you wait too long you may be out of luck. Also, selling a house with hail damage can be difficult.

Which contractor should I hire?

Hire someone local, hire a contractor that has an investment in your satisfaction. When large disasters happen contractors (called storm-chasers) will be driving here with both feet on the gas from all over the country; they skip town as soon as the work dries up or until an even bigger storm hits somewhere else. Many storm-chasers do good, honest work, but some leave homeowners with shoddy repairs and material suppliers with piles of unpaid invoices. You may have heard of the “tail light warranty”; that means the warranty on his work is good as long as you can see the tail lights on his truck.

Hire a contractor with a fixed local business address, a good Better Business Bureau rating, a website, a CheckBook rating, a stellar Angie’s List Rating, a long local reference list and a vested interest in your happiness. Although the guy from Oklahoma may say all the right things he certainly wont be heading back to see you if there is a problem.

Row House Flat Roof

Thursday, May 13th, 2010

We just finished these row houses. I’m writing about them because unlike the hundreds we have already done these are more like bathtubs than roofs.

Usually, flat roofed houses have at least one side that is open with parapet walls (parapets are walls that are higher than the roof) on either two or three sides. The slightly pitched roofs usually slope toward the area where the parapet is missing, in place of the parapet there is a gutter to carry all of the rainwater away. These houses have had additions built on where that open area once was.

Flat roof with ponding water

Flat roof with ponding water

This vinyl sided area you see was built where the roof used to drain into a gutter. A drain was installed on the left side to handle the rain and melting snow. The drain failed during a huge snowstorm and water came into the house on all three levels.

The roof also has a pretty deep depression, when I was done shoveling off the snow I found about three inches of standing water right in the center of the roof; this roof has to fill up with at least 4″ of water before the first drop ever starts to flow into the drain; not cool. Standing water will kill a flat roof in no time. Would you want to get into a tub with 3″ of last nights water in it? Besides being a mosquito day spa, standing water on the roof starts to smell as leaves and debris start to accumulate and it begins to turn into a pond, a pond without a peeing cherub.

Solving the ponding problem:

Tapered insulation is a dense foam 4′x4′ board that has a slope heading in one direction. We use these 4′ square boards in different combinations to add slope to a retrograde roof.

Tapered insulation

Tapered insulation

You can see how the insulation slopes from 1/2″ on the right to 3″ on the left; by the time the insulation is installed across the roof it will be 6″ high; sloping all the way down to 1/2″.

Tapered insulation

Tapered insulation

The insulation is installed and the first course of the White TPO membrane is being installed.

TPO scupper drain

TPO scupper drain

Since this roof has wall all around it I fabricated a scupper drain, the square plate you see is attached to a stainless steel tube, the tube runs through the brick wall to the outside. This is just like the drain in your tub.

TPO scupper drain

TPO scupper drain

This is the same scupper drain from the back. Its made from TPO coated galvanized steel so we can weld our roofing directly to it. The square tube is made from stainless steel and I solder it to the TPO coated metal. This will pass through the brick parapet wall and carry the water away.

Flat roof before

Flat roof before

Before:

When I took this picture it hadn’t rained for two weeks but the roof still had an inch of water on it.

TPO flat roof with tapered insulation

TPO flat roof with tapered insulation

You can see how the roof pitches directly to the drain, no more pond, no more leaks.

Scupper drain and conductor head

Scupper drain and conductor head

This is where the scupper drain comes through the brick wall, I installed a white aluminum cover plate over the drain tube. Then I installed a conductor head to direct the water down the downspout to the ground.

Here is the other project that we finished the same week:

Before:

Flat roof

Flat roof

This one also failed miserably during a snow storm. Instead of installing a proper flat roof they chose to use a mixture of shingles, flat roof membranes and tar. It worked about as well as you could expect.

During:

New insulation

New insulation

Old roof removed and new insulation installed.

new White TPO flat roof

new White TPO flat roof

New white TPO membrane and new scupper drain installed and ready to face another winter.

TPO scupper drain

TPO scupper drain

My new drain with a plate and conductor head.

Old roof drain

Old roof drain

This was the old drain, the contractor just knocked the bricks out, laid in some bits of metal and tar and called it a day. I was actually surprised it lasted as long as it did.

There are ways to properly address any roof, no matter what the previous owner or roofer did we can always fix it.

If you are having trouble with your roof call me any time.