How long does a full roof replacement actually take?

Most single-family homes take one to three days once tear-off starts, depending on roof size, pitch, and complexity. Weather is the biggest wildcard in this climate, since we need a dry window to get the deck covered, so timelines can shift with the forecast. We'll give you a realistic range once we've seen the roof.

What should I ask a contractor before hiring them for a roof replacement?

Ask whether they tear off down to the deck or roof over existing layers, what underlayment and flashing details they use at valleys and eaves, and whether they inspect the deck before quoting a final price. Also ask how they handle a job if weather interrupts it mid-tear-off — that answer tells you a lot about how they actually operate.

What's the real difference between architectural and 3-tab asphalt shingles?

Architectural shingles are thicker, heavier, and layered to create dimension, which gives them a higher wind rating and generally longer lifespan than flat 3-tab shingles. They cost more upfront but tend to hold up better through repeated wet-dry cycles, which matters in a climate that stays damp for long stretches. Most of what we install today is architectural for that reason.

Do roofs in this climate need special underlayment, or is standard felt fine?

We don't use standard felt as our primary underlayment because it absorbs moisture and breaks down faster under sustained wet conditions. Synthetic underlayment sheds water better and holds up longer, and we add self-adhering ice-and-water membrane at eaves and valleys where wind-driven rain is most likely to intrude. It's a small cost difference for a meaningfully better moisture barrier.

Can a Washington-based contractor do roofing work for a home in Aldergrove, BC?

Yes, we regularly work with homeowners just across the border, and we handle the logistics of coordinating a cross-border job so it isn't something you have to sort out yourself. Because Aldergrove is close to our Lynden base, it's a normal part of our service area rather than a special exception. If you have questions about how that works for your specific property, we're happy to walk through it during the estimate.

Roof Replacement for Aldergrove, BC Homes

Why Aldergrove Roofs Wear Out Faster Than the Brochures Say

Aldergrove sits in that stretch of the Pacific Northwest where the weather never really commits to one extreme — it just stays damp, mild, and persistent for most of the year. That's the part that catches homeowners off guard. A roof here isn't fighting one brutal winter storm; it's fighting months of low-grade moisture exposure that never fully dries out between rain events. Add in salt-laden air moving inland off the coast, driving rain that gets pushed sideways under poorly sealed flashing, and a moss season that can run from fall through spring, and you have a climate that's genuinely tough on roofing systems — even good ones installed wrong.

Most roof failures we see in this area aren't dramatic. They're slow: a shingle mat that absorbed moisture for a few too many winters, a valley that was never flashed correctly, decking that stayed damp under a moss mat long enough to start losing structural integrity. By the time it shows up as a stain on a ceiling, the underlying damage has usually been building for years.

Signs an Aldergrove Home May Need a Roof Replacement

Not every roofing problem means a full replacement — some are legitimately repairable. But there's a point where patching a roof costs more over time than replacing it once, correctly. Here's what we look for when we're deciding which side of that line a roof is on:

Granule loss heavy enough that you're finding grit in gutters and downspouts every time it rains
Shingles that are curling, cupping, or cracking, especially on south- and west-facing slopes
Moss or algae that keeps returning within a season or two of cleaning, even after treatment
Soft or spongy decking felt underfoot during inspection, a sign moisture has reached the sheathing
Daylight visible through the roof deck from inside the attic
Flashing around chimneys, skylights, and vents that's rusted, lifted, or sealed with visible caulk patches
A roof that's 20+ years old (for asphalt) with multiple prior repairs in different areas
Rising energy bills tied to poor attic ventilation or insulation gaps at the roofline

If you're seeing two or three of these at once, it's usually time for a real inspection rather than another round of spot repairs.

What a Correct Roof Replacement Actually Involves

The material on top gets all the attention, but the majority of a roof's long-term performance in a climate like this comes from what's underneath it. A roof replacement done right addresses every layer, not just the visible one.

Tear-Off and Deck Inspection

Every layer of old roofing comes off down to the deck. This isn't optional in our process — roofing over existing layers traps moisture and hides rot, and it's exactly how a small leak becomes a structural repair. Once the deck is exposed, we check every sheet for soft spots, delamination, or water staining and replace any section that doesn't pass, before anything new goes down.

Underlayment Built for Wet Climates

In a region that sees sustained rain rather than occasional downpours, underlayment choice matters more than most homeowners realize. We use synthetic underlayment across the field for its water resistance and durability, with self-adhering ice-and-water membrane at the eaves, valleys, and any low-slope transitions — the spots where wind-driven rain is most likely to work its way backward under the shingle line.

Flashing Details

Flashing failures cause more leaks than worn-out shingles do. Chimneys, skylights, sidewall intersections, and roof-to-wall transitions all need step flashing or counter-flashing installed correctly and integrated with the underlayment — not just caulked over. Caulk is a maintenance item, not a flashing system, and it's usually the first thing to fail in driving rain.

Ventilation

A roof deck that can't breathe stays damp longer after every storm, which is exactly what accelerates moss growth and shortens shingle life. We check intake at the soffits and exhaust at the ridge or roof vents, and correct imbalances as part of the replacement rather than treating ventilation as an afterthought.

Choosing a Roofing Material for This Climate

There's no single "best" roofing material — there's the right material for a given roof pitch, budget, and exposure. Here's how the common options stack up for a coastal-influenced, moss-prone climate like Aldergrove's:

Material	Moss & Moisture Resistance	Wind Performance	Typical Lifespan	Maintenance
Architectural asphalt shingle	Good, especially algae-resistant lines	Rated to 110–130 mph when installed correctly	25–30 years	Periodic moss/debris removal
3-tab asphalt shingle	Fair; wears faster in constant damp	Lower wind rating than architectural	15–20 years	More frequent inspection
Standing seam metal	Excellent; sheds moisture and resists moss	Very high, few exposed fastener points	40–60 years	Minimal
Cedar shake	Poor without diligent upkeep; traps moisture	Moderate	20–30 years with maintenance	High; regular treatment needed

We install asphalt shingle and metal roofing as our primary systems. We generally steer homeowners away from cedar shake in this specific climate — not because it's a bad-looking product, but because untreated wood shakes hold moisture against the roof deck through a long wet season, and the maintenance schedule needed to keep them performing well is more than most homeowners want to commit to. That's a trade-off worth knowing before you commit to it, not after the first moss outbreak.

What Roofing Costs Depend On

We don't publish flat prices because roofing genuinely isn't a flat-rate job — two houses with the same square footage can cost very differently to re-roof. The main variables:

Factor	Why It Matters
Roof pitch and complexity	Steep or multi-valley roofs take longer and need more safety setup
Layers to remove	Multiple existing layers add tear-off time and disposal cost
Deck condition	Rotten sheathing found during tear-off adds material and labor
Material choice	Asphalt, metal, and premium shingle lines vary significantly in cost
Access	Tight lots or steep driveways affect staging and disposal logistics

Straightforward asphalt shingle replacements on a standard single-story roof tend to fall in a moderate range; steep, complex rooflines or metal systems run higher. We'll never quote a number without seeing the roof — anyone who does is guessing, and guesses turn into change orders mid-project.

Our Roof Replacement Process

Inspection and estimate. We walk the roof, check the attic where accessible, and note deck condition, flashing points, and ventilation before quoting anything.
Material selection. We go over the honest trade-offs of each option for your roof specifically, not a generic pitch.
Scheduling around weather windows. Given how much rain this region gets, we plan tear-off days around forecasts that give us a real window to get the deck dried in and covered.
Tear-off and deck repair. Old roofing comes off, the deck gets inspected, and any compromised sheathing is replaced before underlayment goes down.
Underlayment, flashing, and ventilation correction. Every detail layer gets installed to spec, not just the parts that show.
Final installation and cleanup. New roofing goes on, site is magnet-swept for debris, and we walk the finished roof with you.

Why a Crew That Already Works Aldergrove, BC Matters

We're based out of Lynden, in Whatcom County, and Aldergrove is close enough that it's a regular part of our service area rather than a special trip. That matters for a few practical reasons. First, we've seen how roofs in this specific corridor actually fail — the moss patterns, the wind-driven rain angles, the deck rot spots that recur on certain roof designs — which shapes how we flash and ventilate a new roof, not just what shingle we sell you. Second, working across the border regularly means we've already sorted out the logistics of scheduling, material delivery, and coordinating a job on that side of the line, so it doesn't become your problem mid-project. Third, a crew that's local to the area has a reputation to protect with neighbors, not just a one-time transaction to close.

A roofing crew that only shows up for a single job and then disappears has little incentive to get every detail right, because they're not the ones who'll hear about a callback next winter. We are.

Reducing Moss Regrowth After Your New Roof Goes On

No roofing material is completely moss-proof in a climate this damp, but a correctly installed roof with proper ventilation will resist moss far longer than one without. A few habits extend that further:

Keep overhanging branches trimmed back so the roof gets more sun and airflow, which slows moss establishment
Clear gutters and valleys of debris at least twice a year — trapped organic matter holds moisture against the roof
Have moss physically removed rather than pressure-washed off, which can strip granules and shorten shingle life
Consider zinc or copper strips near the ridge on new installations, which release compounds that inhibit moss growth over time
Schedule a roof check after major windstorms to catch lifted shingles or flashing before the next rain

Get an Honest Look at Your Roof

If your roof is showing its age or you just want a straight answer about how many years it has left, we'll come take a look and give you an honest assessment — no pressure, no inflated urgency. Use the form below to request a free estimate.