Top Tips for Choosing Quality Roof Waterproofing Sealants

27 February 2020
 Categories: , Blog


When it rains, water tends to puddle on a flat roof, and if there is a small crack on the roof, then some water will find its way into your home before the puddle dries up. You don't experience this problem with a pitched roof because rainwater flows to the gutter system. It is for this reason that homeowners with flat roofs are advised to waterproof their roofs well. While you need to get various inputs for this project, the sealant is arguably the most important one. A waterproofing sealant is the main product that ensures water does not breach the interior of your house. Here are tips to help you buy the right roof waterproofing sealant.

Longer Curing Period — The first thing you should look at when buying a waterproofing sealant is its curing duration. Different manufacturers produce sealants with varying curing periods, and this is mainly because of the different chemical components in the sealants. Ideally, it is essential to buy a sealant with a more extended curing period. The reason is that sealants that take longer to cure last longer compared to those that cure over a short period; therefore, the former require less maintenance over their service life. However, sealants with a long curing period should be applied in clear weather — preferably sunny weather — for maximum effectiveness.

No Volatile Organic Compounds — Since sealants on flat roofs are exposed to the sun's heat for about half the day, ensure that you only buy environmentally friendly sealants. The last thing you want on your roof is a waterproofing agent that is laden with volatile organic compounds and other toxins that will evaporate into the atmosphere when exposed to high temperatures. Additionally, environmentally friendly sealants don't require you to wear face masks during the application, thereby making the application process safe for any DIY enthusiast. Therefore, read the active ingredients used to make sealant carefully and research their effects — if any — on the environment or human body before you buy.  

Adherence — Waterproofing sealants are only as good as the strength of their adhesives. Therefore, you must get waterproofing sealants that adhere well to surfaces. This will ensure that the sealant remains put once it is applied. One way you can test this is by applying a small portion of the sealant on your roof and watch how it adheres to the surface. It is essential to note that while some sealants require priming first before applying for better adherence, others need you to clean the roof thoroughly. Whichever is the case, make sure that the sealant you buy can adhere to your roof.

To learn more about waterproofing, contact a company offering building supplies in your area.