Dynamic Remodel and Repair

Dynamic Remodel & Repair

How to Choose The Best Roof Materials to Waterproof Your Roof

Roof Waterproofing

Water damage affects around 14,000 homeowners daily. Unfortunately, these leaks are often left unattended, leading to severe and costly damage in the long run. In this case, prevention is better than the cure. You need to start waterproofing your roof.

Table of Contents

Why Should You Waterproof Your Roof?

Waterproofing roofs prevent water from seeping into the cracks. Water can’t penetrate; you’re less likely to experience water damage. It also stops moisture from accumulating, preventing mold growth.

Waterproofing works on all forms of precipitation, whether rain or snow. It’s essential when you’re looking to future-proof your home. So, how does it work?

How Does Waterproofing Work?

Waterproofing membranes are applied in sheets to your roof to insulate water, which can help you avoid expensive roof repair services down the line.

But waterproofing materials aren’t something you can just slap on. You need to consider roof surface compatibility, drain overflow code requirements, and the type of waterproofing material.

Waterproofing Material for Residential and Commercial Roofs

If you’re planning on installing a new roof and adding waterproofing or want to future-proof your roof, consider the following materials:

Bitumen-based Waterproofing Materials

You can choose several top surface layers for bituminous membrane waterproofing. These layers protect the waterproofing membrane from damage. The most popular include:

  • Sand: Easy to install and is chemically resistant
  • Slates: Aesthetically pleasing and improves the visual appeal
  • Polyethylene: Easier to transport
  • Aluminum: Used to seal penetrations and adds extra layers of protection

Most bitumen-based waterproofing materials also include a second layer, the polymer-bitumen compound, which consists of the following:

  • Atactic PolyPropylene (APP): Mixes bitumen and selected polymers for UV and heat resistance.
  • Styrene-Butadiene-Styrene (SBS): Protects against moisture damage and is very flexible.

The final layer consists of reinforcement materials such as non-woven fiberglass and polyester, which resist shock, fatigue, and punctures.

Liquid Bitumen-based Waterproofing Materials

Liquid bitumen-based waterproofing membranes are applied as primers. These are some of the most accessible, flexible, and cost-efficient waterproofing materials.

The better the polymer grade and fiber in the liquid bitumen-based waterproofing material, the better it protects against water damage. You can also use it for internal insulation in areas like your bathroom, kitchen, or toilet.

Polyurethane Liquids

There are different types of polyurethane liquid waterproofing membranes that you can use on your roof. Here are the most popular options to consider:

  • One-component: Cures faster, even in cooler environments and temperatures.
  • Two-component: More efficient to install and cures faster with the right equipment
  • Water-based liquid: Best for moderate or warm climates and provides UV stability

EPDM Membrane

EDPM membranes have some of the highest tensile strength among all waterproofing materials. It also shows high resistance against tear, weathering, elongation, heat aging, acid, and other oxygenated solvents.

Thermoplastic Membrane

Thermoplastic membranes, which combine polypropylene and ethylene-propylene reinforced with polyester, are commonly used on commercial roofing systems. Consider them if you’re looking for waterproofing materials that are also flame retardants.

Bituminous Membrane (Asphalt)

If you’re looking into residential waterproofing solutions, consider bituminous membranes for asphalt roofs. This material provides seamless installation options for green roofs and podiums and can be used for specific winter applications.

How to Choose a Waterproofing Service Provider?

As you can see, choosing a suitable waterproofing material for your roof can be technical. You have to find a material that will work with your roof.

That’s why contacting a waterproofing service provider for these projects is always recommended. Here’s how you can choose the right roofing company:

Company History

First, look at the roofing contractor’s website for its history or reputation. The website should also contain references, reviews, and testimonials. Company portfolios or project galleries should also be available.

Licensed and Insured

What you’re ultimately looking for is a local and licensed company. Local companies know the ins and outs of state laws or specific guidelines in your area. Ensure that the company you’re considering has the proper licensing, liability insurance, and certifications.

Offers Inspection Services

Contractors can’t make accurate estimates without properly inspecting your roof. Inspections allow contractors to take the necessary steps to ensure your family’s and their team’s safety.

Inspections are also necessary for waterproofing projects, allowing contractors to identify which machines and equipment are essential for each roof type.

Written Contracts

Nothing’s final until written. Even if you just have an initial quotation, it’s best to work with a waterproofing roofing contractor who can provide you with a written contract even for initial quotes.

This way, both you and the contractors have something to base on. Contracts should detail the duration of the waterproofing job, the warranties, and the estimated costs.

How Much Does Waterproofing Roof Cost?

As always, the actual cost of waterproofing a roof depends on several factors. The main ones include your roof size, roof condition, cost of coating materials, and labor.

According to Angi’s data, sealing or waterproofing your roof costs an average of $1395. However, depending on the earlier factors, it can be as low as $485 and as high as $2000.

Another factor to consider is if you plan on installing a new roof with waterproofing materials. Will the contractors need to tear off a large portion of your roof? Are they planning to install insulation beneath the waterproofing membrane?

Ask your local roofer these questions to help you create a realistic budget for waterproofing your roof.

Your Waterproofing Checklist

Waterproofing roof projects take time and consideration. You must consider your roof’s type, condition, and the waterproofing materials compatible with it.

Unfortunately, this isn’t recommended for people with no experience. But before committing to a local contractor, consider the following checklist:

  • Does the roofing contractor have a solid, reputable company history?
  • Are they locally licensed and insured, and do they have the proper warranties for waterproofing roofs?
  • Do they offer inspection services or provide free estimates?
  • Can they give you written contracts, even for the initial estimates?

If you’re looking for a roofing contractor that checks all the boxes, look no further than Dynamic Remodel and Repair.

Phil DiMarco

Phil DiMarco - Owner​

Phil has worked in all facets of exterior renovations over the past 20 years from Labor and installation to Sales and project management. His knowledge includes Shingles and Flat roofing systems, Vinyl, wood and fiber cement siding. And many popular brands of windows and doors. He will give honest feedback on all of your exterior renovation questions.

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