Tag Archives: moisture

Stucco Home Insurance: How Does EIFS Affect Insurance

Stucco (or more accurately, EIFS) is enormously popular on homes in and around the Greater Toronto area due in large part to it’s great aesthetic appeal and it’s ability to insulate, thereby reducing heating and cooling bills. It’s become a “hot topic” (pun intended) for insurance companies – moreso in the U.S. than Canada – over the past few decades because of problems if improperly installed. Problems which range from moisture intrusion and entrapment to the combustibility of it’s components and decorative accents.

Before starting any home improvement project, it’s a good idea to call your insurance provider to check whether or not it will affect your home insurance policy. Failure to contact them and update your policy when changing something as drastic as the exterior walls on your home could actually void your home insurance warranty.

Think about it… let’s say you retrofitted your home with stucco in July of 2012 at a cost of $12,000 and were happy with the contractor – he was polite, on time, did everything according to the contract and finished on a good note. 3 years down the road (it’s 2015 now) you have a building inspection completed for termites because it’s been an issue in your neighbourhood. During the inspection, the home inspector doesn’t find any termites, but notes that you have moisture trapped in your walls – around the windows, wherever. Remembering that mould is somewhere in your insurance policy, you contact your insurance provider who sends someone out to investigate and they’re shocked that your home doesn’t match what’s on the paperwork. Your insurance company won’t cover the damage any more, because what you’ve been paying for does not have EIFS-related coverage. Let’s take a look at some of the damages you’ve incurred:
- Insurance: 36 months x $200/month = $7200
- Removal of EIFS: $4,000
- Removal and repair of mould/moisture damaged wall section: $7,000
- Reinstallation of EIFS, done properly: $13,000
Total: $31,200

That’s $31,200 out-of-pocket expense that is related to your one forgotten phone call to your insurance company. Note that properly installed EIFS usually is slightly (give or take 10%) more expensive than the shmuck who cut his costs by cutting required material out of your home. Good luck finding him too – the average “stucco contractor” is in business roughly 2 years before closing it down and opening another or going to work with a friend.

If properly installed, and done in accordance to local building codes (following fire code where necessary), EIFS is a worry-free system that will last decades and save you thousands of dollars in heating and cooling bills. The trick then, is to find the right contractor – one that has a proven track record and can be vouched by manufacturers and previous clients. Services like Stucco Toronto can put you in touch with multiple contractors, are provide a neutral – 3rd party approach to your project.

The takeaway from this article is this:
1. Make sure you contact your home insurance provider to include coverage of EIFS, which may or may not affect your policy.
2. Compare quotes and get recommendations from suppliers/previous-customers, but don’t try to force a contractor to lower their prices to the point where they are going to cut corners – you’re the only one that will suffer in the end.

Stucco / EIFS Leaky Window Protection

Although Exterior Insulation Finish Systems (EIFS – Synthetic Stucco) has bared the brunt of the “leaky window” negative publicity, it is nevertheless a problem that affects all sidings. The problem lies primarily with poor practices regarding the sealing of window frames and tie-ins with the weather barrier.

Sto Corp (an EIFS manufacturer) has put out a document showing how their StoGuard® Tape can be used around any window to assist in this critical detail – with any siding. Following these procedures will help to ensure your home stays protected from moisture and the associated mould and rot issues.

View it at:

http://www.stocorp.com/index.php?/20090714420/Videos-training/sto-videos/menu-id-265.html

Additional Components of the Weather Barrier

An EIFS weather barrier is the same as putting building paper around your house, isn’t it? You can just slap it on and you’re safe, right? Yes… and no. Yes, it is a weather barrier which will keep moisture away from your substrate. No, it’s not the only component of a well constructed weather barrier. EIFS has gone through the fire of criticism and condemnation, and come out the other side stronger than any other cladding. It has undergone so much research and testing that it is now correcting faulty building methods in all other sidings as well as professionals’ understanding of their homes. A full weather barrier incorporates not only the weather barrier itself, but also caulking, flashing and window-tie ins in their respective location to keep water at bay.

Around any penetration in EIFS which may move (eg. hose bib, wiring, electrical meters) or openings which may expand and contract at different rates (eg. windows and doors) you will need caulking and a backer rod. Dissimilar materials expand and contract at different rates, causing rigid materials between them (such as a basecoat) to crack and leak water inside. Low-modulus caulking will expand and contract significantly before tearing, making it an ideal material for these gaps. However, caulking will only properly move when adhered to only 2 surfaces, therefore a closed-cell backer rod is required between the gap to provide a third surface, to which the caulking will not stick. It is recommended to caulk between the EIFS and other surface before applying the finish coat, as the caulking will not properly  stick to finish coat.

Low Modulus Sealant Adhered to 2 Surfaces and Backer Rod

Low Modulus Sealant Adhered to 2 Surfaces and Backer Rod

Look around at homes in your neighbourhood next time you’re out — how many windows have flashing over them? Water running behind claddings, then into the window frame is one of the most common causes of moisture problems in homes. Installing “kick out” flashing over a window will “kick out” any intruding water before it enters the window frame, preventing it from traveling any further down the substrate. Flashing needs to be installed starting behind the weather barrier, extending beyond the window frame, with a minimum 3/8″ drip edge (+ return) and sealant on the underside. It’s a good idea to get a color close to your stucco wall or trim (you likely won’t match it exactly) to blend in and minimize any aesthetic disturbance.

An additional step recommended by EIFS manufacturers (though rarely installed by applicators without proding) is window tie-ins using EIFS tape. EIFS tape covers from the outside weather barrier, across the window opening/framing and into the interior to completely seal the substrate, window frame and interior drywall from water intrusion. It is usually supplied as a peel-and-stick membrane (like duct tape), minimizing the time it takes to install and lower the chances of improperly installing it. It is worth asking who will do this as it is not normally within a stucco contractor’s scope of work.

Traditionally, it was uncommon to see flashing and window tie-ins on homes, and caulking (and the previous two) were never done by the EIFS applicator. More and more however, the burden is being placed on stucco applicators to completely seal the wall. Nobody likes asking for their cheque, then being told they’re expected to do more work that wasn’t included in their original scope and pricing. It’s perfectly reasonable to expect the applicators to take care of this step as part of their work — as long as it is clarified in advance so that they can include it in their price.