Frequently Asked Exterior Renovation Questions

Learn more about Unic Sheet Metal & Eavestroughing’s range of services by browsing our list of frequently asked questions below. Still want more information? Don’t hesitate to contact the GTA’s finest exterior siding professionals by calling us today!

Why do I need new eavestroughs?

Eavestroughing is important because it protects your home from water damage. Without it, rain water would drip down your roof around your house and can be very damaging to your walkway, driveway, landscaping and foundation. In time, it could leak into your basement. In the winter, the water will freeze and can be dangerous on entrances and walkways.


Eavestroughs can also add value to your home and enhances the exterior look of your house with the wide range of colours that we offer.

How do I know if I need new eavestroughs?

You may need to purchase a new eavestrough system for a variety of reasons, including the overall condition of your roof, the downpipe size and other factors. With more than 40 years of experience, our estimator will be able to tell if you need new eavestroughs or if you’re in need of a repair. Please contact us today for a free estimate!


When it rains, check if you have any leaks, overflow or water draining behind your eavestrough. You may need to replace your eavestroughs if they are too old to repair. If you have overflowing water, it could mean that your eavestroughs are clogged, too small or you may need larger downpipes.


If your eavestroughs are beginning to break away from fascia board or if you see water coming down between the eavestrough and fascia board, then you need a new eavestrough system. We will install your new eavestroughs with hidden brackets which are stronger than spikes (nails) and we will install large downpipes for a better water flow.
For an even stronger eavestrough, we recommend installing Alu-Rex T-Rex Leaf Guard system that is a continuous bracket system and also a leaf guard system that will keep your eavestrough free of leaves, debris and animals.

How often should I clean my eavestroughs?

We recommend that you clean your eavestroughs at least twice a year to prevent leaves and debris from blocking your eavestrough and downpipes. To help your rainwater clear, we recommend getting the Alu-Rex Gutter Clean system. When you purchase this system, you’ll no longer have to risk climbing ladders to clear your gutters and eavestroughs yourself!

When should I replace my wooden fascia?

If your home is more than 20 years old, it’s time to replace your wooden fascia! The Unic Sheet Metal & Eavestroughing team will visit your home to provide a free estimate and install new fascia as needed.

How do I know if my home is ready for new fascia boards?

We recommend replacing your fascia every 20 years, but some homes require earlier replacement services. Rot from improper gutter installation could be one reason you need to replace your fascia sooner.

How long will my soffit and fascia last?

Our soffit and fascia are made from pre-finished aluminum, a very durable material. Our soffit and fascia are designed to last and to add value to your home for many years to come.

Do I need to clean my soffit and fascia?

In many residential areas, normal rainfall is sufficient to keep your soffit and fascia surfaces clean, but we do recommend that these materials be washed at least once per year.

What happens if I have a problem with my soffit and fascia?

If you have a problem, please contact our customer service department by phone or by email. The customer service department will then determine what caused the problem and come up with a solution to keep your home’s exterior siding as protective and attractive as the day it was first installed.

Do wet leaves stick to Alu-Rex products?

Wet leaves will only temporarily stick to Alu-Rex products. This manufacturer’s products boast a smooth, perforated surface. Just as leaves may temporarily stick to the hood of your car, leaves and other debris that land on the surface of Alu-Rex products dry quickly in the sun. Perforated services maximize airflow and allow debris to dry and be removed quickly. A little wind is all it takes to sweep away dry leaves and debris. For example, a 10 km/h wind removes wet leaves and about 100 pine needles per linear foot. A 37 km/h wind can remove about an inch (2.5 cm) of pine needles per linear foot.

How do Alu-Rex products stand up to snow?

Alu-Rex products reduce the weight of snow on your gutters. Because the snow can’t get into the gutters, the weight they have to support is limited to that which accumulates on top of Alu-Rex products. The gutters remain fully functional, so water from melting snow and ice can drain away freely.

Do Fixa-Tech or the Gutter Clean system help to form ice?

Not at all! Water continuously drains into the downspout because nothing—neither debris nor snow—will block it from draining. With Alu-Rex products and the Alu-Perf technology, your gutters work all year round. Alu-Rex products do not cause ice formation. If ice forms on the edge of the roof, we recommend that you check if the attic space is adequately ventilated and insulated.

Can installation of Alu-Rex products lead to leaks in my roof?

No. Alu-Rex products do not cause any leaks. No shingles are raised and no nails or screws go into the roof during installation. Beware of look-alike products that require you to lift the shingles. These products can lead to leaks. In time, the asphalt shingles dry out and become brittle. It's never a good idea to lift shingles when installing gutter protection systems, whether they're nailed in, screwed on, or simply set in place. Also, the manufacturers' warranty on asphalt shingles is void if the shingles are lifted, peeled away or modified.

What is the maximum weight my gutter can support when fastened with the Fixa-Tech system?

The maximum weight your gutter can bear with Fixa-Tech is 250 lb. per linear foot (373 kg per linear metre). That's 50% stronger than with spikes or hangers.

What is the point of using Fixa-Tech if there are no trees near my home?

It may seem unnecessary to use the Fixa-Tech continuous gutter fastening system if there are no trees around your home. But Fixa-Tech's main strengths are its robustness, strength, durability, and quality.

Why is the Fixa-Tech continuous fastening system better than spikes, screws and hangers?

Spikes, screws, and hangers provide a certain degree of strength, but only over a few inches to either side of them. The spaces between the spikes/screws/hangers are weak.

What’s the difference between Alu-Rex’s Gutter Clean System and Fixa-Tech products?

The Gutter Clean System is a gutter protection system that prevents leaves and debris from getting in and clogging the existing gutters. This product is simply placed on your home's existing gutters. Fixa-Tech is a continuous fastening system for new gutters that very securely fastens gutters to your home, making them 50% stronger than traditional systems.

Do Alu-Rex products require upkeep?

The Gutter Clean System® and Fixa-Tech® are among the most efficient gutter protection systems on the market today. In the vast majority of cases, a light breeze is enough to sweep away normal debris. In areas under the roof or under shallow overhangs on sloped roofs, debris may build up where the wind cannot reach it. We recommend that you occasionally clean out these areas to keep your Alu-Rex products in good working order.

How does water get into the eavestrough? There aren’t enough holes and they’re too small.

Our exclusive Alu-Perf gutter cover technology is the result of extensive research and development. The product has 624 holes every 24 inches (61 cm). This allows water to drain at the same rate as a 2 in. x 3 in. (5 cm x 7.5 cm) downspout. Rigorous testing by an independent certification agency has proven that Alu-Rex gutter cover can drain over 29,7 in. (755 mm) of water an hour over a length of 20 feet (6 m). And with 44,000,000 feet (13,411,200 metres) of Alu-Rex products installed around the world, the figures speak for themselves.


Note: The highest amount of rainfall ever recorded worldwide was 12 in. (305 mm) of water in one hour (Holt, MO, 1947). In comparison, the 1996 Saguenay Flood in Quebec was triggered by 11 in. (275 mm) of rain in three days. Alu-Rex products would have been able to handle all that rain in just one hour-and three times more!


Overflow is usually caused by the eavestroughs themselves (not wide enough or deep enough for the roof surface) or the downspouts (insufficient number for the roof's surface). It is important to make sure there are enough downspouts to avoid this problem. For this purpose, you need to keep in mind that one downspout is enough to drain the equivalent of a 600 sq. ft. (56 m2) roof. In short, if you don't have backflow problems with your current eavestroughs in heavy rainfalls, the Gutter Clean System and Fixa-Tech won't create them.

Can Alu-Rex eavestrough fastening systems and gutter covers withstand heavy water flow?

Even if all the perforations get covered-which never happens because the wind sweeps away leaves and debris, Alu-Rex eavestrough fastening system and eavestrough cover leaf guard can drain up to three times the quantity of water ever recorded in the heaviest rainstorm.


How? Because wet leaves remain permeable. Water still gets between the leaves-and even through them-to drain into the eavestrough. The water always finds its way into the holes.


What's more, the exclusive design of Alu-Rex products features an approximately half inch (1 cm) deep basin. Testing in the lab and in the field has shown this to be the right depth to catch more water without stopping the wind from doing its job of sweeping away leaves, pine needles, and debris from the surface. Beware of look-alike products that are completely flat. Water can overflow when products are not equipped with a basin.

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