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7 Water Intrusion Signs Every Property Owner Should Look Out For

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Birmingham Roofing & Sheet Metal

Commercial Steep Slope Roof Systems

Asphalt Shingle

Modern asphalt shingles fall into three main categories:

  • 3-tab (strip) shingles — still available but declining in favor due to simpler appearance and lower durability.
  • Architectural/dimensional/laminated shingles — the market leader (often 50-60% + share), featuring multi-layer construction for a 3D textured look mimicking wood shakes, slate, or tile; typical lifespans of 25-35+ years.
  • Luxury/designer/premium shingles — high-end variants with thicker profiles, enhanced granule technology, and lifespans approaching 40–50 years in ideal conditions.

Contemporary features include algae-resistant granules, cool-roof reflective coatings for energy efficiency, Class 4 impact resistance (for hail-prone areas), and superior wind ratings (up to 130–180 mph in tested systems). Fiberglass reinforcement now holds the majority share (around 60–78% in recent data), offering lightweight strength and better performance in extreme weather.

Uses remain primarily residential steep-slope roofs (new builds, replacements, and renovations), with strong demand driven by aging housing stock, frequent reroofing needs, and insurance incentives for upgraded, impact-resistant products. North America leads global consumption, with the market valued in the $16–17 billion range and steady growth projected through 2030 at 4–5% CAGR, fueled by cost-effectiveness amid rising material prices for alternatives like metal or tile.

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Metal Panel

Typical metal seam panel systems fall into 2 categories:

Exposed Fastener: In contemporary use, exposed fastener panels are attached directly to the roof deck with visible screws, often featuring neoprene washers for sealing. Common materials include steel, aluminum, or zinc, with profiles like PBR or U-Panel. They dominate budget-friendly applications, such as agricultural buildings, sheds, garages, and entry-level residential roofs in rural areas. Pros include low cost ($3-8 per sq ft installed), fast installation (fewer steps, DIY-friendly), and availability in various gauges and colors. Cons encompass higher leak risk from fastener penetration (screws can loosen or corrode over time), limited expansion allowance leading to oil canning, and shorter lifespans (20-40 years). They perform well in moderate climates but may require more maintenance in harsh weather.

Standing seam: These roof systems feature raised, interlocking seams with hidden clips or fasteners, allowing panels to float and expand/contract with temperature changes. Profiles like snap-together or field-seamed variants use premium metals with Kynar or SMP coatings for fade resistance. They excel in commercial, institutional, and high-end residential projects, including retrofits over existing roofs, due to superior weatherproofing. Pros: Excellent durability (40-60+ years), sleek aesthetics, high wind/snow ratings (up to 180 mph), and better warranties. Cons: Higher cost ($8-16 per sq ft), complex installation requiring skilled labor, and longer project timelines

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Frequently Asked Questions

Here are some of the most commonly searched or frequently asked questions about repairing a commercial flat roof, based on roofing industry resources, contractor FAQs, and common concerns:
What is a steep slope roof?
expand_more
A steep-slope roof is a type of roofing system designed and installed on a roof with a significant incline, typically greater than 3:12 pitch or “slope” (meaning the roof rises more than 3 inches vertically for every 12 inches of horizontal run, or about 14 degrees from horizontal). Asphalt shingles, cedar shake shingles, andmetal panel roofing systems are examples of commonly used roofing systems on steep slope roofs.
I’ve got roof leak issues but I’m worried I’ll be pushed to replace a roof I can’t afford. What are my options?
expand_more
More often than not, a roof less than 15 years old can be repaired and the life of the roof extended with minimal costs. Neglecting leaks, however, can lead to further damage to the wood decking and structure of the building or home which is extremely costly to repair. Don’t wait, call or text us at 205-322-3491 to have the immediate leak needs addressed. We can build a comfortable plan together to maintain your roof as long as possible while creating a replacement plan that works with your budget.
How do I know when it’s time to replace my roof?
expand_more
The eye test from the ground can be deceiving. We provide detailed inspections that look for roof wear like areas of missing granules, shining fiberglass strands on the edges of the shingles, and divots from fallen objects or hail damage. One other tell-tale sign is damaged trim, windows and siding where an improperly installed roof may not shed water properly, damaging the structure. Because shingle patches age differently, roofs that have considerable amounts of patches will likely need to be replaced sooner rather than later.
I don’t know what type of shingle or brand that I have. Can you help me identifyand match it during the repair process?
expand_more
Yes! Rarely does anyone know the shingle manufacturer, type or color on their own. Often, other roofing contractors choose which shingle brand they can obtain cheaply and quickly regardless of color. Birmingham Roofing & Sheet Metal uses major, well known brands like GAF, Versico, Certainteed, Tamko and others, but we can likely match any color and brand needed to repair your roof seamlessly.
I see dark, streaky areas on my shingle roof. What can I do about it?
expand_more
That dark, streaky look on your shingle roof is very frustrating as it causes the roof to look old or damaged and can drive anyone nuts! The most common culprit is a blue-green algae called Gloeocapsa magma (sometimes spelled magnospora). This is a very common issue with asphalt shingles, particularly in humid, warm climates like in Alabama, where moisture from rain, dew, and high humidity creates ideal conditions for it to thrive. We can soft wash your shingles using an eco-friendly algae removal solution to improve the look and longevity. The good news is that major brands like GAF have greatly improved the technology in manufacturing shingles with an algae-resistant formula built into the shingles. A new roof with this formula will greatly cut down the need to fight this algae!

Frequently Asked Questions

What is a steep slope roof?

A steep-slope roof is a type of roofing system designed and installed on a roof with a significant incline, typically greater than 3:12 pitch or “slope” (meaning the roof rises more than 3 inches vertically for every 12 inches of horizontal run, or about 14 degrees from horizontal). Asphalt shingles, cedar shake shingles, andmetal panel roofing systems are examples of commonly used roofing systems on steep slope roofs.

I’ve got roof leak issues but I’m worried I’ll be pushed to replace a roof I can’t afford. What are my options?

More often than not, a roof less than 15 years old can be repaired and the life of the roof extended with minimal costs. Neglecting leaks, however, can lead to further damage to the wood decking and structure of the building or home which is extremely costly to repair. Don’t wait, call or text us at 205-322-3491 to have the immediate leak needs addressed. We can build a comfortable plan together to maintain your roof as long as possible while creating a replacement plan that works with your budget.

How do I know when it’s time to replace my roof?

The eye test from the ground can be deceiving. We provide detailed inspections that look for roof wear like areas of missing granules, shining fiberglass strands on the edges of the shingles, and divots from fallen objects or hail damage. One other tell-tale sign is damaged trim, windows and siding where an improperly installed roof may not shed water properly, damaging the structure. Because shingle patches age differently, roofs that have considerable amounts of patches will likely need to be replaced sooner rather than later.

I don’t know what type of shingle or brand that I have. Can you help me identify and match it during the repair process?

Yes! Rarely does anyone know the shingle manufacturer, type or color on their own. Often, other roofing contractors choose which shingle brand they can obtain cheaply and quickly regardless of color. Birmingham Roofing & Sheet Metal uses major, well known brands like GAF, Versico, Certainteed, Tamko and others, but we can likely match any color and brand needed to repair your roof seamlessly.

I see dark, streaky areas on my shingle roof. What can I do about it?

That dark, streaky look on your shingle roof is very frustrating as it causes the roof to look old or damaged and can drive anyone nuts! The most common culprit is a blue-green algae called Gloeocapsa magma (sometimes spelled magnospora). This is a very common issue with asphalt shingles, particularly in humid, warm climates like in Alabama, where moisture from rain, dew, and high humidity creates ideal conditions for it to thrive. We can soft wash your shingles using an eco-friendly algae removal solution to improve the look and longevity. The good news is that major brands like GAF have greatly improved the technology in manufacturing shingles with an algae-resistant formula built into the shingles. A new roof with this formula will greatly cut down the need to fight this algae!

Commercial Roofing Services for Property Managers and Owners

Repair

Roof leaks are a serious issue for commercial property owners leading to unnecessary damage.  Our repair crews are on standby to help you stop the leaks so you can back to business.

Get Started

Replacement

Repair cost are getting out of hand.  Our expert roof assessors can help you put together a replacement plan that will work with your budget so you can stop the out of control repair cost.

Schedule a Consultation

Maintain and Plan

Property owners dread unexpected roof problems that feel like they are always reacting. Our Comprehensive Inspection Service will help you understand your roof and have a long term care plan. So you can stay ahead and feel proactive.

Schedule an Inspection

New Construction

Missed details during estimating can blow up budgets later. We focus on risk management, deep plan reviews, and clear communication with your team. That way, your project runs efficiently and delivers quality.
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A Roof Should Protect Your Profit, Not Put You At Risk

Who We Are
‍
Birmingham Roofing & Sheet Metal, Inc. was founded in 1920 and is a licensed Unlimited General Contractor (AL- BC-S:). We continue to be the Magic City’s preferred roofing and architectural metal contractor. With over 100 years of experience in commercial and residential roofing & water control, there’s no challenge too great or problem too big.

What We Do
‍
Water is essential, but it can do some serious damage when left unchecked. Preventing leaks, extending the life of your roof, and helping water shed away from your building is what we do best. We are a roofing and architectural metals contractor that specializes in water control. Trust us to keep your property protected and guide you through the challenges of water control.
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7 Water Intrusion Signs Every Property Owner Should Look Out For to Prevent Expensive Damage to Structure

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