7 Ways that Rainwater Can Damage Your Home

November 22, 2022

Protecting your home against the elements can be incredibly difficult, even with the latest techniques and technologies. In particular, heavy rainfall is a major problem in parts of Canada, bringing a real danger of flooding and other types of property damage.

If you want to effectively reinforce your home against rainwater, it’s crucial to understand the different issues it may cause. To help you prepare, we will look at seven ways that rainwater can cause property damage below.

Flooding Your Basement

A flooded basement is perhaps the biggest problem that rainwater can cause to your home. If you have a basement but rarely (if ever) use it, it’s vital that you check it for signs of leaks, damp, or other signs that it may be vulnerable to flooding.

Flooded basements can cause a risk of electrocution if water comes into contact with appliances, and it may affect the structural integrity of your home if not drained as soon as possible. It could lead to rot, damp, and mould (see below), all of which can be dangerous.

Another risk of a flooded basement is damaged furniture and prized possessions. For example, if you store boxes filled with precious childhood toys, school work, or trophies in your basement, it’s possible that they could become damaged by water.

Encouraging Mould Growth

Mould is one of the biggest dangers created by a flooded basement or damp anywhere else in your home. Wet, dark environments are perfect breeding grounds for mould, and wet spaces could become infested with mould before you even realize there’s a problem.

Mould can spread from surface to surface quickly through airborne spores — and you may actually breathe these in without knowing it. That’s why mould poses a risk to certain people, including the elderly, young children, those with weakened immune systems, and those living with asthma or other respiratory conditions.

It’s vital that you deal with any mould formation in your basement or any other space within your property. Otherwise, it may continue to spread.

Overflowing Clogged-up Gutters

Gutters are essential for removing rainwater from your property and directing it to the ground via a downspout. When working properly, gutters can prevent both cosmetic and structural damage to your home that could be expensive to put right.

However, gutters can become clogged with dried leaves, moss, or other debris — and they will overflow during heavy downpours.

As a result, the water will pour over the top of the gutter and flow down your home’s siding. This is particularly problematic if your gutter materials are weak and prone to sagging under excess weight, as your whole guttering system could be compromised.

Overflowing gutters may cause damage to the outside of your property, and if left unaddressed, allow the moisture inside. That would lead to damp and potential mould.

Seeping in Through Cracks and Damaged Windows

Rainwater may seep into your home through cracks in your walls or foundation. While a slight seep may not seem like cause for alarm right away, that could build up over time and lead to bigger problems. Water left inside cracks could even freeze during icy weather and expand, creating wider channels into your home.

Damaged windows can be a problem too. For example, if their sealant is very old or was applied incorrectly in the first place, window frames could become cracked and allow rainwater to leak into your property.

Damaging Your Roof

Heavy rain has the power to damage shingles, as well as other parts of your roof, over months and years. Shingles may become worn down after enough exposure, and rainwater could even seep inside through the roof, threatening your home’s structural integrity.

Rainwater can also damage your roof if it freezes. For example, if water remains on your roof after a heavy downpour and temperatures are low enough for it to freeze, the water may expand inside cracks. If this happens enough times, your roof may become significantly damaged and require repairs.

Staining on Walls and Ceilings

Water stains forming on specific walls or ceilings may indicate that your home has been damaged by rainwater. This could be due to water leaking through a hole in the roof, related to damaged or missing shingles, or because overflowing gutters are sending water along the side of the property.

Whatever the cause, water stains that continue to grow and grow may indicate a big leak or water buildup that needs to be investigated as soon as possible.

Backing Up Your Sewage System

Sewage systems are vital for removing waste from the home, but excess rainwater can overload them. And that could create blockages and overflows, directing that waste back into your home.

Sewage that ends up flowing into your property can be particularly challenging to deal with, to say the least, and may pose a health risk in some cases. Make sure that you wear protective clothing and gear when approaching it, or leave it to a professional team instead.

What Can You Do to Protect Your Home from Rainwater Damage?

You can take numerous steps to protect your home, including waterproofing your basement and repairing cracks in your foundation.

Basement waterproofing is available in two forms: exterior and interior waterproofing. Exterior waterproofing involves scraping and cleaning all debris away from the foundation, then sealing any cracks or holes. This prevents rainwater from seeping in through hidden channels.

A bituthene primer and delta membrane are applied to the foundation, and new weeping tiles are installed to facilitate effective drainage. During the interior waterproofing process, a trench will be created along the foundation wall, and a drainage membrane and weeping tile system will be installed. The weeping tile will be connected to an existing sump pump or drain.

Aluneed Ltd. is a family-owned and -operated waterproofing business based in Toronto. We provide interior and exterior waterproofing services incorporating cutting-edge techniques and tools. Our team will help protect your basement from flooding, dampness, mould, and other water-related issues.

Get in touch now for an instant, competitive quote or schedule a free inspection!

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