Hail Damaged Foam Roof

Due to the big Hail storm we had in Arizona there are tens of thousands of destroyed roofs All roof types were affected except tile roofs. The picture below is what a hail damaged foam roof will look like. There will be thousands of divits and impacts on the roof.

Hail damaged foam Roof

Hail damaged foam Roof

It is recommended to tear the roof off and install a new roof.  There are alot of contractors out there just recoating them this is not recommended.

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Hail Damage

Hello all I would like to inform you all of what hail damage to your roof may look like. But first off we had a really big hail storm in Arizona that has created so much damage that it has brought people from all over the country here and you need to be aware of some of these people. Alot of them are nothing more than con men trying to get your insurance money. Things you should be asking

1. Are you licenced in Arizona?

2. How Long?

3. Are you in good standing with the BBB and the Registar of Contractors?

Follow up yourself with this. E-mail me via our contact form if you need help with this.

I have already seen these guys cutting corrners that will cost you  alot more in the future.

To help if you live in these zip codes you may have hail damage. Not everybody in these zip codes are affected but alot of people are.




The main area is  from north to south McDowell rd. to the loop 101 and east to west from I-17 to around 67th ave.

Your damaged shingle roof will look something like this

Hail Damaged Shingle Roof

I have’nt seen any damage to any concrete tile roofs. But if you have a patio roof  that is not tile you can still have damage to that roof as well.

As far as foam roofs go they NEED TO BE REPLACED don’t let anyone just coat it it will fail later.

If you are unsure If you have hail damage and need an inspection but cannot get a roofer out to inspect contact me via the contact form and I will inspect it for you and give you good recommendations.

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Polyester fabric Roof?

Polyester fabric

Polyester fabric membrane

I came across this roof.. if you can call it a roof system. This roof system consists of polyester fabric embed in elastomeric coating directly over the top of plywood, The overall thickness is around 20 mils thick. The coating should have been at least 30 mils thick and the membrane should have been 60 mils. This is a prime example of buyer beware. The home owner paid $2300 for this. I replaced this roof with a 1 inch foam roof with 3 coats of elastomeric coating @ 1.25 gallons per 100 sqft. for the same price. I’ve talked about polyester fabric before and it’s use for repairing foam splits and for the use on top of stucco parapet walls to stop cracks. But this is NOT a roofing system and anytime someones says their going to put polyester fabric on your roof ask these questions.

1. are you putting over the exsisting roof system? (this is ok for a band-aid)
2. are you going to tear off the exsisting roof and put this in place of it? (this is not ok)

I’ve seen this used as a roof system before (and I’m not to fond of it) But it’s applied totally different then this roof. When this is used as a roof system the polyester fabric is layered in asphalt emulssion and the final coat is a 4 gallon per 100 sqft elastomeric coating achieving an overall mil. thickness of around 140 mils thick.

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Things you don’t expect

I have said it before and I’ll say it again. If your not careful in selecting the right roofing contractor you may end up with a roof that looks like the picture below.

This is what happens when you drag your foam hose through wet foam

wet foam

This is what happens when a foam applicator drags the foam hose over wet foam. This kind of thing  does happen from time to time but the real problem here is the fact that it was left like this. Normally you would take your grinder and grind it flat and then apply your coating, apparently this roofing contractor was to lazy to do it right. Kind of makes you wonder what else they didn’t do. Well take a look at the pictures below.

Sloppy workmanship

This picture shows all around bad foam detail. First off they foamed in the A/C condensate line and the A/C electrical conduit. So if for some reason you needed to replace the electrical  or condensate line in addition to hiring an A/C contractor you will also need to hire a roofer. The foam detail is all around bad.

Not enough foam around the base of the pipe

Cracked Pipe

This is really a all to common mistake. 9 out of 10 foam roof leaks are due to a failed penetration or some other component and not the foam it’s self. If they would have put the foam they sprayed up the sides of the pipe around the base of the pipe this wouldn’t have happened. As you can see someone tried to fix this by brushing some elastomeric coating around the pipe and as you can see it didn’t work. The proper way to fix this would be to re-foam the pipe. If you didn’t have the money to hire a roofer to do it you could apply a thik bead of urethane caulking around it. It will be a semi permanent fix. By the way this type of failure is due to settlement and the lack of foam around the pipe.

In a nutshell this property owner paid some one to give them a new roof and then paid someone else to fix their mistakes. And believe me it’s not cheap, had they hired a roof consultant from the very beginning the job would have been done right the first time and would have cost them a lot less than it’s costing them now. Remember that cracked pipe how much damage did it cause inside the structure? How many pipes were failed  like that…. About 9. So remember when you decide to have roofing work done it might be a good idea to at least call a roofing consultant  to see what his fees are you might just be surprised. Or you can roll the dice.

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Scupper Leaks

Here is a good example of  how a common oversite can cost consumers money. In this tutorial I am going to explain why this scupper failed. I am also going to show you how to do a basic repair that will stop the leak . And finally I’m going to show you the damage caused by neglect.

In the picture below you will see a failed scupper. The reason this scupper failed was due to the roofer not tearing out the old roofing  from inside and around the scupper, before applying the new roofing material. Common practice for overlaying an old roof with a new roof is to what they call “divorce” the old roofing from around scuppers, pipes and other penetrations. The reason they do this is because these are weak areas and are often the source for leaks.

Failed Scupper

Failed Scupper

As you can see where the arrows are pointing are places the old mastic has dried out and seperated from the scupper. Had all of that old material been removed prior to the new roof installation this would have never happened.

Ok now that we can see where our leak is, how do I fix it? Go get a couple tubes of urethane caulking and a caulking gun apply the caulking in all the cracks and tool it with a piece of cardboard or putty knife. You can then apply some elastomeric roof coating over the top of  that And the repair is finished.

Repaired Scupper

Repaired Scupper

This kind of fix is easy to do yourself. This type of repair is considered a permenent fix. However if your roof is under warranty call your roofing contractor and have him tear out the old material and redo it. If this happened at one scupper chances are all of the scuppers are the same way and need to be corrected.

Below is a picture of the damage this leaking scupper caused.

celing cave in

celing cave in

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Tile Wall Detail

This article will show you how a tile wall detail is installed on a tile roof system. Keep in mind there are other methods used depending on what type of wall you are tieing into. In this example the roof detail will be lathed and stucco applied over the top. The roof flashings will be behind the lath and stucco. This is how a new constuction stucco home in Arizona would be done.

Step #1.

Your underlayment is installed and nailed, the underlayment type will vary. Typically a 30# organic felt is used this is the most common.

Tile underlayment

Tile underlayment

Step #2.

Next we install a J-pan metal and nail it to the wall over the top of the underlayment this metal allows water to run off the roof.

J-pan Metal

J-pan Metal

Step #3.

Next we are going to flash over the top of our J-pan with another metal called Z-bar.

Z-bar flashing

Z-bar flashing

Step #4.

Now we apply a waterproofing paper over the top of our Z-bar.

Waterproofing paper

Waterproofing paper

Step #5.

Our tile roof wall detail is now complete. Next we will lath and stucco our wall and lay the tile and the roof is correctly installed.

Finished tile wall detail

Finished tile wall detail

There are other methods to do wall details as well. This example was used because it’s a common method used in the southwest. Whatever method  you use the principals are all the same. The underlayment always has a flashing over the top.

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Leaking Windows or Roof?

Here is a common problem both property owners and roofers run into. Leaking windows! I’m going to explain how you can tell the diffrence between a roof leak and a window leak. Identifing the  leak yourself can save you money by calling the right contractor for the job. Sometimes roofing  companies also do window service too, but not all of them.

If after reading this and you still not sure of the source of your leak try to find a roofing contractor that also offers window service. This way you will be able to get it fixed, and not have to pay some roofer who can’t fix it  a service call fee.

Identifiying a window leak:

If you develop a leak around a window.

Is the water coming from the top of the window frame (usually the corners) or is it coming from the celing above the window frame.

If the water is coming from the cornners of the window frame then it is more likely a window leak and not a roof leak.

If the water is coming in from the celing above the window it’s probably a roof leak.

Some common causes of window leaks are due to

1. improper window mositure barrier (most likely not this).

2. Dry rotted, cracked seals. (most likely)

3. Plugged window weeps (depends on window type).

4. Cracked stucco.

5. Defective windows or window installation ( this is being seen more and more).

Below is a picture of defective window glass. If your home or property has windows that look similer to the pictures below and your home is less than 10 years old then you may have a constuction defect lawsuit, and may be entitled to compensation.


Defective window seal

Defective window seal

The above picture shows defective window glass. The problem here is an inproper seal in between the two panes of glass.

If your windows look like this you may be entitled to compensation.

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Fixing a parapet wall split

In this tutorial we will learn how to properly repair a  parapet wall split on a built-up or similar type roof system. The materials you will need are.

1. Caulking gun.

2. Urethane Caulking.

3. Polyester fabric (ty-tex tape)

4. Elastomeric roof coating and paint brush.


The first step is to clean the area of repair and apply the urethane caulking.


Parapet wall split

Parapet wall split


Step 2. Apply a heavy coat of elastomeric roof coating to repair area.


Apply elastomeric roof coating

Apply elastomeric roof coating


Step 3. Lay the polyester fabric across the repair area make sure the fabric runs past the repair area at least 2 inches on all sides.


Polyester fabric

Polyester fabric

step 4. Apply 1 more coat of elastomeric roof coating on top of the polyester fabric and brush or roll the coating in.


Final Coat

Apply one more coat of elastomeric coating

Now the repair is finished this is what it should look like.


Finished wall repair

Finished wall repair

Doing this kind of repair yourself can save you alot of money. The leak was obvious and now you can do it yourself. A leak like this can end up in hundreds if not thousands of dollars in damages. Regular roof  inspections can and often find these kinds of problems before they cause any damage from water intrusion.

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Improper cementitious “C-cure” roof application

What is a Cementitious roof ? Or also known as C-cure. C-cure is a light weight Cementitious concrete that is spray applied over a polyurethane foam roof. It is one of the most expensive foam roofs you can buy. The  c-cure has a very high fire rating and is usually applied on schools, government buildings, high traffic roofs or anywhere you need a fire rating.

I was on one recently and took some pictures. The foam application part of the roof is just about as good as they come, but Cementitious part of the roof is as bad as they get.

The application of a Cementitious roof is as follows:

1. Polyurethane foam is applied at a thickness of the roof spec. usually @ 1 1/2 inches or greater.

2. An elastomeric roof coating is applied @ about 1 gal. per 100sqft.

3. A second coat of elastomeric roof coating is applied @ 1.5 gal. per 100sqft. At this time a #6 Aggregate is applied into the wet coating @ the rate of about 35-40lbs per 100sqft.

4. All verticles ”anything above the roof surface” walls, pipes, a/c curbs t-tops ect.  are coated with an elastomeric coating.

5. Finally the C-cure is applied over the roof surface. It’s applied in both directions to prevent voids. The dry thickness is 1/4 of an inch. The finished surface should have a smooth apperance with only the top of the aggregate visable.

Below are some pictures of an inproper c-cure application that will lead to premuture roof failure. Also pictured are incorrect repair methods.

Failed c-cure roof due to improper application

Failed c-cure roof due to improper application

Popcorn Looking c-cure roof

Popcorn Looking c-cure roof

This next picture shows a repair done using an elastomeric roof coating. Elastomeric  coating will not stick to c-cure so thats why this repair has failed.

Elastomeric coated c-cure repair

Elastomeric coated c-cure repair

This next picture shows a c-cure repair done using an aluminum roof coating. You can’t use this coating on a c-cure roof.

You can't use aluminum roof coating on a c-cure roof

You can't use aluminum roof coating on a c-cure roof

What happens now?

This deficiency was discoverd during a roof inspection. Good for the owner because the roof  has not yet completely failed. The bad news is a $15000 c-cure recoat 10 years early. The bottom line here is had the building owner used a roofing consultant to over see this roof installation he wouldn’t have the problem he now has. This is more common than you might think.

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Foam Roof Blister Repair

In this tutorial I’m going to show you how to repair blisters on your foam roof. Foam roof  blisters are not uncommon and are relatively easy to fix. There are many things that can cause blisters please refer to our F.A.Q for common causes.

Normally blisters are not that big of an issue to be concerned with. Unless you have alot of them , They are unusually big  or they are broken. If the blisters are broken then prompt attention is needed to fix them because they can be a source for leaks. It should also be noted that blisters bigger than a baseball should be fixed by a roofing contractor who does foam roofing.

Blisters are fixed as a part of a routine roof re-coat.

In this first picture it identifys a golf ball size blister.

Step 1.

Cut the blister out using a razor knife (bread knifes work the best).

This is a golfball sized blister

This is a golfball sized blister

Step 2.

Fill the hole with a polyurethane caulking. DO NOT use any other kind of caulking your repair will fail.


Use polyurethane caulking to fill the repair area.

Use polyurethane caulking to fill the repair area.

Step 3.

Tool the caulking with a piece of cardboard or putty knife. Make sure you tool the caulking past all of the edges.

Tool the caulking

Tool the caulking

Step 4.

Coat the repaired area with an elastomeric roof coating. This is a permanent repair.

This is the same process a roofing contractor will use to fix blisters that are baseball sized or smaller and less than a 1/2 inch deep.

Below is a picture of a blister that you should not attempt to fix. If you have one that is broke and might be leaking you can caulk it then have it repaired later.

Volleyball size foam roof blister

Volleyball size foam roof blister

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