Home House Hacks Waterproofing: Gearing up for the rainy season

Waterproofing: Gearing up for the rainy season

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Waterproofing: Gearing up for the rainy season
The process for waterproofing is fairly quick and simple. Photo: Courtesy.

As we enter the rainy season, and especially after the downpours we had over the past year, Yucatecans ought to be preparing their homes.

In the past, roofs in Yucatan were treated with a water-and-limestone based paste. This might sound rather insufficient, but the structure of the roofs was different back then. Slopes and drains were a priority at the time of construction, whereas now most roofs do not have the necessary slope to avoid water stagnation.

Waterproofing process.
Waterproofing process. Photo: Courtesy.

To make things worse, weather in the peninsula seems to be getting more extreme every year. The temperature rise in the state has altered the rain cycle, meaning storms are stronger, and more common. This means that we cannot think of waterproofing our homes as a luxury. 

Many people coming to Mérida are interested in purchasing colonial homes, but the age of these properties often brings with difficulties when it comes to water filtration.

Mario Sánchez, of the company Thermohouse, notes that waterproofing your home saves money and a lot of hassle in the long run.

“Mérida’s colonial homes are beautiful, but they come with their own set of challenges,” says Mario. “In contemporary architecture, internal downspouts are often omitted, or hidden as they are considered an eyesore.”

A colonial Mérida home, with flat roofs. Photo: Courtesy.

To further complicate the situation, roofs tend to be flat. This sort of design requires more complex drainage systems that make waterproofing even more important. 

The waterproofing process is fairly straightforward. First, it is important to verify that the roof is dry, free of debris, grease, dust or any substance that could prevent the material from properly adhering. It is then cleaned with a blower, and a one-inch thick layer of polyurethane foam is applied on the entire surface of the roof. 

Then, two coats of a special sealer are applied, giving the surface a nice clean and smooth appearance. 

A 110-square-meters house can be waterproofed in four to five hours, including preparation and finishings.

Waterproofing material applied on roof surface. Photo: Courtesy.

Mario explains that waterproofing systems serve a double function. When properly applied, they generate a greenhouse effect which reflects heat away and helps to maintain a comfortable temperature indoors. 

He encourages homeowners to think of waterproofing as an important investment for their homes, and advices customers not to wait until the beginning of the rainy season, as conditions are not always ideal for application during this time of the year. 

“We can’t have leaks in any space of the house,” he says. “It is not only for comfort, it is also for safety.”

Thermohouse is located at Calle 19 # 101 A x 20 y 22 Col. Centro.