If you’re searching for a durable, weather-resistant, and cost-effective roofing system for your flat or low-slope roof, EPDM roofing is one of the best choices available. Homeowners and commercial property owners in Surrey, BC trust EPDM because it provides exceptional leak protection, UV resistance, and long-term performance without the high maintenance demands of other materials.
At I-M Roofing Ltd, we install premium-quality EPDM membranes designed specifically for the climate in British Columbia. Whether you need a new installation, replacement, or inspection, our skilled roofing specialists deliver reliable results backed by professional craftsmanship and industry-leading materials.
EPDM (Ethylene Propylene Diene Monomer) is a synthetic rubber roofing system known for its strength, flexibility, and weather performance. Here’s why it’s ideal for Surrey, BC homes and buildings:
EPDM roofs can last 30–40+ years with minimal maintenance. The tough rubber membrane withstands extreme temperature changes, heavy rainfall, and daily UV exposure.
The seamless membrane is resistant to leaks, making it perfect for flat roofs where water tends to sit longer.
EPDM is engineered to resist cracking, shrinking, and UV damage, ensuring long-term stability and performance.
EPDM requires far less upkeep than many other flat roofing systems, saving you time and money in the long run.
We follow a structured, professional approach to deliver durable and long-lasting EPDM roofing installations in Surrey, BC:
We begin by inspecting your current roof condition, checking drainage, structural integrity, and any existing damage.
We help you choose the ideal EPDM membrane thickness and type based on your property’s needs.
Our team cleans, smooths, and prepares the roof surface to ensure maximum adhesion and longevity.
The EPDM sheet is rolled out precisely and secured using industry-approved fastening or fully adhered systems.
We install high-quality flashing around edges, vents, and penetrations to achieve complete waterproofing.
Before completing the job, we conduct a full inspection to make sure every seam, edge, and detail is perfectly sealed.
We guide you on maintenance, cleaning, and annual checks to maximize the lifespan of your EPDM roof.
Choosing the right roofing contractor is just as important as choosing the right roofing material. Here’s why Surrey homeowners trust I-M Roofing Ltd:
Our team has extensive experience working specifically with EPDM membranes, ensuring optimal installation and performance.
We only use premium-grade EPDM membranes designed to last decades.
We understand the unique weather conditions in Surrey and install EPDM systems built to withstand them.
No hidden fees, no upselling — just honest recommendations based on your roof’s needs.
We complete projects efficiently, maintain clean worksites, and deliver roofing that lasts.
Protect your home or building with a long-lasting, energy-efficient EPDM roofing system.
EPDM is the most affordable flat roof system available. It is flexible, durable, and proven. It has been used on flat roofs for over 50 years.
If you have a flat or low-slope roof and a tight budget, EPDM is the smart choice. It handles ponding water, extreme temperatures, and building movement better than most systems.
I am Maninder Singh. I have installed over 150 EPDM roofs in Surrey since 2012. I have seen EPDM roofs last 25+ years with proper maintenance. This page tells you everything: what EPDM is, how it compares to other systems, costs, lifespan, and installation.
Call 236-838-9577 for a free EPDM roofing quote. We serve all Surrey flat roofs: residential, commercial, and multi-family.
EPDM stands for Ethylene Propylene Diene Monomer. It is a synthetic rubber roofing membrane that is highly flexible and durable. EPDM is black, but can be coated with a reflective white coating for energy savings.
EPDM is the most widely used flat roof system in North America. It is proven, reliable, and cost-effective.
EPDM comes in three thicknesses:
45-mil: Standard residential and light commercial
60-mil: Commercial, high-traffic areas
90-mil: Industrial, heavy-duty applications
For most Surrey flat roofs, 60-mil EPDM is the best choice. It balances durability and cost.
EPDM is available in:
Black (standard, most common)
White (with reflective coating, energy efficient)
Black EPDM is more affordable. White EPDM is more energy efficient but costs more.
Three main systems are used on flat roofs in Surrey. Here is how they compare.
| Factor | EPDM | TPO | Torch-On |
|---|---|---|---|
| Material | Rubber | Thermoplastic polyolefin | Modified bitumen |
| Lifespan in Surrey | 20-30 years | 20-30 years | 20-25 years |
| Cost per square | $350 to $600 | $400 to $700 | $450 to $750 |
| Installation | Glued or mechanically fastened | Heat-welded seams | Torch-applied (heat) |
| Energy efficiency | Poor (black absorbs heat) | Excellent (white reflects UV) | Moderate |
| Ponding water | Excellent (handles standing water) | Good | Excellent |
| Flexibility | Excellent (handles building movement) | Good | Moderate |
| Repairs | Easy (rubber patch) | Requires heat welding | Torch-on patch |
| Appearance | Black, utilitarian | Clean, modern | Granulated or smooth |
| Best for | Budget-conscious projects, complex roofs | Energy-conscious owners, commercial buildings | High-traffic roofs, strata buildings |
When to choose EPDM:
You are on a tight budget
Your roof has complex details and penetrations (EPDM is flexible)
Ponding water is a concern (EPDM handles it well)
Your building expands and contracts (EPDM flexes)
When to choose TPO:
You want energy efficiency and lower cooling costs
Your roof is visible and appearance matters
You want a modern, proven system
When to choose Torch-On:
Your roof has high foot traffic (HVAC, maintenance)
You want the most durable system
You have an existing torch-on roof and want to match
Not sure which flat roof system is right for you? Call 236-838-9577. We will assess your roof and recommend the best option.
EPDM roofing costs $350 to $600 per square (100 sq ft) for most Surrey flat roofs.
| Roof Area | 45-mil EPDM | 60-mil EPDM | 90-mil EPDM |
|---|---|---|---|
| 1,000 sq ft (small flat roof) | $3,500 to $4,800 | $4,200 to $5,800 | $5,500 to $7,000 |
| 1,500 sq ft (addition or townhouse) | $5,250 to $7,200 | $6,300 to $8,700 | $8,250 to $10,500 |
| 2,000 sq ft (garage or workshop) | $7,000 to $9,600 | $8,400 to $11,600 | $11,000 to $14,000 |
| 5,000 sq ft (commercial) | $17,500 to $24,000 | $21,000 to $29,000 | $27,500 to $35,000 |
What affects the price:
Thickness (45-mil vs 60-mil vs 90-mil)
Installation method (fully adhered vs mechanically fastened vs ballasted)
Existing roof removal ($1,500-$4,000)
Insulation replacement ($500-$2,000)
Roof complexity (curbs, vents, drains, parapet walls)
Building height (scaffolding costs)
EPDM is the most affordable flat roof system. If budget is your primary concern, EPDM is the right choice.
Every roof is different. Call 236-838-9577 for a quote specific to your flat roof.
EPDM can be installed three ways. Each has different cost and performance.
Membrane is glued to the insulation or deck
Best for: Most flat roofs, standard applications
Cost: Moderate
Advantages: No fasteners through membrane, clean appearance
Disadvantages: Requires clean, dry surface for adhesive
Membrane is secured with fasteners through the membrane
Best for: Large commercial roofs, windy areas
Cost: Lower than fully adhered
Advantages: Faster installation, lower cost
Disadvantages: Fasteners visible, potential leak points
Membrane is held down with gravel, pavers, or stone
Best for: Large commercial roofs, flat roofs with no penetrations
Cost: Lowest installation cost
Advantages: No adhesives or fasteners, easy repair
Disadvantages: Heavy, limits roof use, drains must be protected
Our recommendation for most Surrey homes: Fully adhered EPDM with 60-mil membrane. It provides the best balance of durability, appearance, and cost.
EPDM roofs last 20 to 30 years in Surrey’s climate with proper installation and maintenance.
| Factor | Impact on EPDM Roof |
|---|---|
| Heavy rain (1,200-1,600mm/year) | EPDM sheds water well. Proper slope and drains are critical. |
| Ponding water | EPDM handles standing water better than any other system. |
| Freeze-thaw cycles (40-60 per year) | EPDM is highly flexible. Handles expansion and contraction. |
| UV exposure | Black EPDM absorbs UV. Can degrade over time. Requires coating or maintenance. |
| Building movement | EPDM flexes with building movement. No cracking. |
What eventually fails on an EPDM roof:
Seams (lap joints can fail over time)
Flashings (around curbs, vents, parapet walls)
Punctures (from foot traffic or debris)
UV degradation (black EPDM can chalk and crack)
With proper maintenance, an EPDM roof can last 25+ years in Surrey.
EPDM rubber is impervious to water. It does not absorb moisture, degrade, or leak from ponding water. This makes it the best choice for flat roofs that do not drain perfectly.
EPDM ponding water advantages:
| Feature | EPDM | TPO | Torch-On |
|---|---|---|---|
| Water absorption | None | None | None |
| Ponding water damage | Minimal | Moderate | Minimal |
| Seam failure from ponding | Rare | Possible | Rare |
| Membrane degradation | None | None | None |
If your flat roof has ponding water issues, EPDM is the best choice. It handles standing water better than any other flat roof system.
Step 1: Free quote
We inspect your flat roof. We check the deck, insulation, flashings, and drains. We give you a fixed price.
Step 2: Material selection
You choose thickness (45-mil, 60-mil, or 90-mil), color (black or white), and installation method.
Step 3: Site preparation
We protect your property. We set up safety equipment. We post signs if needed.
Step 4: Roof removal (if applicable)
We remove existing roof layers. We inspect the deck. We photograph everything.
Step 5: Deck and insulation repair (if needed)
We replace damaged decking or insulation. You approve the cost before we start.
Step 6: Insulation installation (if needed)
We install new insulation board. This improves energy efficiency and creates a smooth surface for the membrane.
Step 7: Membrane installation
We unroll the EPDM membrane. We position it on the roof. For fully adhered, we apply adhesive to the deck and roll the membrane into place. For mechanically fastened, we fasten the membrane to the deck.
Step 8: Seam sealing
We seal seams using splice tape and seam primer. This creates a watertight bond.
Step 9: Flashings and details
We install EPDM flashings around all curbs, vents, drains, and parapet walls. This is the most critical part of installation.
Step 10: Final inspection
We inspect all seams, flashings, and drains. We perform a water test. We ensure the roof is watertight.
Step 11: Cleanup and walkthrough
We clean the site. We walk the roof with you. We answer all questions.
Step 12: Warranty
You receive manufacturer warranty and our 10-year workmanship warranty.
Pros:
Most affordable flat roof option
Flexible (handles building movement)
Easy to repair (rubber patches)
Excellent for ponding water
Well-established, proven system
Handles extreme temperatures
Cons:
Dark color absorbs heat (unless coated)
Seams are glued (can fail over time)
Less puncture resistant than torch-on
Not as modern or attractive
Black surface absorbs UV
Best for: Budget-conscious projects, complex roofs, ponding water concerns
Pros:
Energy efficient (white reflective surface)
Heat-welded seams (stronger than glued)
Lighter weight than torch-on
Modern appearance
Excellent UV resistance
Cons:
Requires professional installation
Sensitive to oils and solvents
Can shrink over time
Not as durable as torch-on for foot traffic
Best for: Commercial buildings, energy-conscious owners, visible flat roofs
Pros:
Thick, durable membrane
Excellent puncture resistance
Handles foot traffic well
Excellent for ponding water
3-ply system adds redundancy
Cons:
Requires flame application (fire risk)
Heavier than TPO and EPDM
Dark color absorbs heat (unless coated)
More expensive than EPDM
Best for: High-traffic roofs, strata buildings, commercial roofs
1. What is EPDM roofing?
EPDM (Ethylene Propylene Diene Monomer) is a synthetic rubber roofing membrane used on flat and low-slope roofs. It is affordable, flexible, and durable.
2. How long does an EPDM roof last in Surrey?
20 to 30 years with proper installation and maintenance. 60-mil and 90-mil membranes last longer than 45-mil.
3. Is EPDM better than TPO for flat roofs?
EPDM is better for affordability, flexibility, and ponding water. TPO is better for energy efficiency and appearance. The best choice depends on your priorities and budget.
4. How much does EPDM roofing cost in Surrey?
$350 to $600 per square (100 sq ft). 45-mil is the most affordable. 60-mil and 90-mil cost more but last longer.
5. Can EPDM be installed over existing roofing?
Yes, in some cases. EPDM can be installed over one layer of existing roofing if the deck is solid. However, we recommend tear-off for proper inspection and insulation.
6. Does EPDM come with a warranty?
Yes. 20-30 year manufacturer warranty on the membrane. 10-year workmanship warranty from Imroofs.
7. Is EPDM good for ponding water?
Yes. EPDM rubber is impervious to water and handles ponding water better than any other flat roof system. It is the best choice for flat roofs that do not drain perfectly.
We specialize in flat roofs. We understand EPDM installation.
10-year workmanship warranty
45-mil, 60-mil, and 90-mil options
Black and white EPDM options
Fully adhered, mechanically fastened, and ballasted installations
Seam sealing expertise (splice tape and seam primer)
Licensed, insured, WCB compliant
Locally owned and operated since 2012
EPDM is the most affordable, flexible flat roof system for Surrey’s climate. It handles ponding water, extreme temperatures, and building movement better than any other system.
Call 236-838-9577 for a free EPDM roofing quote. We serve all Surrey flat roofs: residential, commercial, strata, and multi-family.
Imroofs – EPDM roofing specialists. Affordable flat roofs. 10-year warranty. Free quotes. Licensed and insured.
I-M Roofing Ltd — Delivering durable, high-quality roofing solutions designed to protect and impress.
