{"id":254,"title":"Expert Guide to Gravel Roof Resurfacing: Achieve Lasting Results","slug":"expert-guide-to-gravel-roof-resurfacing-achieve-lasting-results","lang":"en","description":"Learn how gravel roof resurfacing extends roof life, prevents costly damage, and ensures lasting results with expert tips and proven techniques.","content":"

Introduction

Flat roofs have long been a reliable roofing option for commercial buildings and residential properties. Among these, the tar and gravel roof has earned a reputation for durability and cost-effectiveness. However, like any roofing system, it eventually needs resurfacing or replacement.

This guide explores gravel roof resurfacing in depth. You’ll learn about the role of flat roofing gravel, common issues like a tar and gravel roof blister, and the best tar and gravel roof replacement options available today. By the end, you’ll know whether you should replace a tar and gravel flat roof or resurface it for extended performance.

Section 1: What is a Tar and Gravel Roof?

A tar and gravel roof—also called a built-up roof (BUR)—is a type of flat roofing system consisting of:

Multiple layers of asphalt or tar.
Reinforced fabric (often fiberglass or felt).
A top layer of flat roof gravel to protect against UV rays and weather damage.

Benefits of Tar and Gravel Roofs

Durability: Lifespan of 20–30 years with proper maintenance.
UV Protection: The gravel acts as a shield against sun exposure.
Cost-Effective: Affordable compared to newer flat roofing alternatives.
Soundproofing: Provides extra insulation and sound absorption.

Section 2: Why Resurface a Gravel Roof?

Even the best flat roofing gravel systems degrade over time. Resurfacing extends life without the full cost of replacement.

Signs Your Roof Needs Resurfacing

Cracked or loose gravel layers.
Standing water or poor drainage.
Visible tar and gravel roof blister spots.
Frequent leaks or water intrusion.
General wear after 15–20 years.

Section 3: Understanding Tar and Gravel Roof Blisters

A tar and gravel roof blister forms when air or moisture gets trapped between the layers of tar and felt. Over time, exposure to heat causes expansion, creating bubbles or raised patches.

Why Blisters Are a Problem

They weaken roof integrity.
They can pop, leading to leaks.
They expose tar to UV rays, accelerating deterioration.

Solutions

Minor blisters: Cut open, dry the area, and reseal.
Severe blistering: May require you to replace the tar and gravel flat roof with modern materials.

Section 4: Tar and Gravel Roof Replacement Options

When resurfacing isn’t enough, property owners can choose from several tar and gravel roof replacement options:

1. Modified Bitumen Roofing

Similar to BUR but uses polymer-modified asphalt.
Better flexibility and resistance to cracking.
Can be applied with heat or self-adhesive sheets.

2. TPO (Thermoplastic Olefin) Roofing

Lightweight, reflective white surface.
Excellent for energy efficiency.
Popular for commercial properties.

3. EPDM Rubber Roofing

Long-lasting synthetic rubber membrane.
Cost-effective and easy to install.
Minimal seams reduce leak risk.

4. PVC Roofing

Highly durable with excellent chemical resistance.
Works well in areas with heavy rain or harsh weather.

5. Spray Polyurethane Foam (SPF)

Creates a seamless, insulated surface.
Excellent for reducing energy bills.
Requires professional installation.

Section 5: Steps for Gravel Roof Resurfacing

If replacement isn’t required, resurfacing can extend your roof’s life by 10+ years.

Step 1: Inspection

Hire a roofing contractor to evaluate the condition of your flat roof gravel and tar layers.

Step 2: Cleaning

Remove debris, dirt, and loose gravel. Proper cleaning ensures adhesion of new layers.

Step 3: Repair

Patch cracks and holes.
Remove small blisters and reseal.

Step 4: Apply New Layers

Add new asphalt or tar coatings.
Re-embed fresh gravel for UV protection.

Step 5: Seal and Protect

Apply a reflective coating if desired.
Ensure proper drainage to prevent pooling.

Section 6: Cost of Resurfacing vs. Replacement

Service Type	Average Cost per Square Foot	Lifespan Added	Best For
Resurfacing	$3 – $6	8–12 years	Roofs in fair condition
Replacement	$7 – $12+	20–30 years	Severely damaged roofs

Note: Prices vary based on material, contractor rates, and building size.

Section 7: Maintenance Tips for Tar and Gravel Roofs

Schedule annual inspections.
Keep drains and gutters clear.
Check for tar and gravel roof blister spots after hot summers.
Add reflective coatings to extend life.
Avoid unnecessary foot traffic on the roof.

Section 8: Should You Replace Tar and Gravel Flat Roofs with Modern Alternatives?

While resurfacing works for many situations, modern flat roofing systems often offer better:

Energy efficiency (TPO, PVC).
Durability (EPDM).
Ease of maintenance (SPF).

If your roof is over 25 years old or has extensive blistering, it’s usually better to replace the tar and gravel flat roof rather than repair it repeatedly.

FAQs

Q1: How long does a tar and gravel roof last?
With proper maintenance, 20–30 years. Resurfacing can extend this lifespan further.

Q2: Can I walk on a tar and gravel roof?
Yes, but minimize traffic to avoid dislodging gravel.

Q3: How do I know if resurfacing is enough?
If damage is limited to surface wear and minor blisters, resurfacing works. If structural layers are compromised, consider replacement.

Q4: Which is the best alternative to a tar and gravel roof?
TPO and EPDM are among the most popular tar and gravel roof replacement options for flat buildings.

Conclusion

A tar and gravel roof is durable, cost-effective, and time-tested, but it requires care and eventually, an upgrade. By addressing issues like a tar and gravel roof blister early and exploring the right tar and gravel roof replacement options, you can extend the life of your property’s roofing system.

Whether you choose to resurface using fresh flat roofing gravel or fully replace a tar and gravel flat roof with a modern alternative, investing in quality roofing ensures long-term protection and peace of mind.

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