Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Before
After
Before
After
Before
AfterFast, Reliable Roof Replacement Across Monrovia
Most Monrovia homeowners needing a new roof want two things straight: how much it’ll cost and how soon we can start. A full roof replacement in Monrovia typically runs $8,500 – $18,000 for standard asphalt shingle homes, with architectural shingle systems landing in the $12,000 – $24,000 range depending on roof pitch and decking condition. Our crews serve Monrovia from our Los Angeles metro office, and scheduling is coordinated so you’re not waiting weeks for a crew to cross the basin.
We know Monrovia’s mix of 1920s bungalows near Old Town, mid-century ranch homes off Huntington Drive, and newer construction up in the foothills below the San Gabriel Mountains. Each era has different decking, ventilation, and code requirements. That’s why we send a project specialist to walk your actual roof before any quote gets written. Call (325) 246-5075 and we’ll get your free estimate scheduled this week.
Why Crestview Roofing Is Monrovia’s Preferred Roof Replacement Company
We’ve replaced roofs on homes within a few blocks of Monrovia Library Park and up along the steeper grades near Canyon Boulevard where wind exposure changes everything about how shingles need to be fastened. Monrovia’s position at the base of the San Gabriels means your roof deals with Santa Ana gusts, summer thermal cycling that cracks older shingles, and occasional winter rain that finds every weak seam.
Our Roof Replacement in Monrovia process follows The Relay Visibility Guarantee: a written price before any work begins, before-and-after photo documentation sent to your phone, a live trackable arrival time so you know exactly when our crew pulls up, and a digital invoice texted the moment we finish. No four-hour windows. No price bumps at the door.
Dylan Pace built Crestview Roofing in 2000 on the idea that homeowners deserve the same transparency they get from every other service on their phone. The 365-Day Done Right Promise covers every repair for a full year, in writing, included with every job. If something fails, we come back free. No negotiation, no runaround.
A live person answers our phones 24/7. Not a voicemail loop, not “call back Monday.” Real people who can check crew availability and get you scheduled.
Roof Replacement Contractor in Monrovia
Roof Replacement Contractor work in Monrovia means stripping the existing roof system down to the decking, inspecting for hidden water damage or rot, then installing a complete new assembly that meets current Los Angeles County building codes. Most Monrovia homes built before 1980 have 1×6 plank decking rather than modern plywood, which affects how we fasten the new roof and what materials we recommend. A full replacement becomes necessary when your roof is past 20 – 25 years, when you’re seeing widespread granule loss, or when repairs would cost more than 40% of a new system.
Our Roof Replacement team handles everything from permit pulling to final inspection. We work with GAF and CertainTeed systems most often in Monrovia, though we’ll spec Atlas or Tamko when the roof geometry or homeowner preference calls for it.
When Repair Won’t Cut It
Patching works for isolated damage, but when we’re seeing multiple leak points, deteriorated underlayment, or decking that’s spongy across large areas, replacement saves money long-term. We also handle Roof Repair in Monrovia for homes that aren’t quite there yet.
Permits and Inspections
Monrovia falls under Los Angeles County jurisdiction for building permits. We pull permits on every replacement, schedule inspections, and make sure your job passes before we consider it done. The permit cost is included in your written quote, not tacked on later.
Asphalt Shingle Roof Replacement in Monrovia
Asphalt Shingle Roof Replacement is what most Monrovia homeowners need. The job involves removing existing shingles and underlayment, replacing damaged decking, installing synthetic underlayment and ice-and-water shield in valleys, then laying new architectural or three-tab shingles with proper ventilation. In Monrovia’s climate, where summer days hit 90+ and winter nights drop to the 40s, thermal expansion puts serious stress on shingle adhesives. That’s why we specify shingles rated for Zone 2 wind resistance minimum, and we hand-nail or use pneumatic fastening patterns that exceed manufacturer specs on slopes above 6:12.
Most asphalt shingle replacements in Monrovia run $8,500 – $16,000 for a standard 1,500 – 2,000 square foot home with walkable pitch. Steeper roofs, multiple dormers, or full decking replacement push toward the higher end.
Architectural vs. Three-Tab
Three-tab shingles are thinner, flatter, and cheaper upfront but last 15 – 20 years in Monrovia’s sun exposure. Architectural shingles are laminated, thicker, and carry 30-year to lifetime warranties. We install both but recommend architectural for most Monrovia homes given the replacement cost of doing it twice.
Flat and Low-Slope Options
Some Monrovia homes, especially additions and garage structures, have flat or nearly flat sections that need modified bitumen or TPO membrane rather than shingles. We also offer Roof Installation in Monrovia for new construction and additions where the full system gets designed from scratch.
Trusted Brands We Service in Monrovia
We install GAF Timberline HDZ and CertainTeed Landmark architectural shingles as our standard offerings, with Atlas StormMaster Slate and Tamko Heritage Vintage available for homeowners wanting specific color profiles or enhanced wind ratings. Every brand we carry is stocked through regional distributors with same-day or next-day availability to Monrovia, so we’re not leaving your roof exposed while materials ship. Our crews are certified applicators for the systems we install, which matters for warranty registration. Manufacturer warranties require installation by trained contractors using specified accessories, venting, and fastening patterns. We document every detail so your 30-year or lifetime shingle warranty stays valid.
Common Roof Replacement Problems We See in Monrovia Homes
- Santa Ana wind damage along foothill slopes. Homes near the northern edge of Monrovia, closer to the mountain front, see sustained winds that lift improperly fastened shingles. We find previous installers who used too few nails or placed them in the wrong zone of the shingle.
- Original wood shake roofs with multiple layer-over-layer installations. Some older homes near Old Town still have the original shake under two layers of asphalt. That weight stresses the structure and hides rot. We strip to bare framing when we find this.
- Inadequate attic ventilation baking shingles from below. Monrovia’s summer heat builds in poorly vented attics, curling shingles prematurely and voiding manufacturer warranties. We calculate proper intake and exhaust venting as part of every replacement.
- Valley leaks from outdated metal or poor flashing. The brief but intense winter rains Monrovia gets funnel through valleys and around chimneys. We install ice-and-water shield membrane and custom-formed valley metal on every job.
Pricing for Roof Replacement in Monrovia, CA
Here’s what Monrovia homeowners actually pay for roof replacement:
| Service | Typical Range |
|---|---|
| Three-tab asphalt shingle replacement | $8,500 – $14,000 |
| Architectural shingle replacement | $12,000 – $24,000 |
| Full decking replacement (add-on) | $3,000 – $7,500 |
| Flat roof replacement (TPO/modified bitumen) | $10,000 – $18,000 |
These ranges assume standard roof complexity and accessible staging. Steep pitches, multiple stories, skylight replacements, or hazardous material removal (old asbestos siding or lead flashing) add cost. We don’t guess. Our project specialist measures your roof, inspects the attic and decking, then delivers a written line-item quote with every cost specified. The number on that page is the number on your invoice. No change orders unless you add scope. Call (325) 246-5075 for your free estimate.
We Also Serve Cities Near Monrovia
Our crews work throughout the San Gabriel Valley. We regularly replace roofs in Monrovia, Arcadia, Duarte, Sierra Madre, and Baldwin Park. Each city has its own permit requirements and typical housing stock, and we adjust our specs accordingly. Arcadia’s larger estate homes often need premium shingle systems, while Baldwin Park’s post-war tract housing has specific ventilation challenges we’ve solved hundreds of times.
Serving Monrovia, CA – Our Local Coverage Area
We’re based in the Monrovia area and know this community well. Use the map below to see our service coverage – if you’re nearby, we can almost certainly help.
FAQs About Roof Replacement in Monrovia
We typically schedule estimates within 2 – 3 business days of your call, and our project specialist arrives within the live-trackable window we text you. Call (325) 246-5075 to check this week’s availability.
Yes. We replace roofs throughout Monrovia, from the older homes near Myrtle Avenue and Colorado Boulevard up to the hillside properties off Canyon Boulevard and the newer construction near Huntington Oaks. Each area has different access, slope, and code considerations we’re familiar with.
We provide emergency tarping and temporary weatherproofing to stop active leaks, then schedule full replacement once conditions allow safe crew access. A live person answers our phones 24/7 to coordinate emergency response.
Monrovia pricing is comparable to Arcadia and Sierra Madre, slightly higher than Baldwin Park due to permit fees and the frequency of steep-slope work in the foothill zones. The biggest cost driver is always your specific roof size, pitch, and decking condition, not the city itself.
Every replacement includes our 365-Day Done Right Promise in writing, plus the full manufacturer warranty on your shingle system, typically 30 years to lifetime depending on the product you choose. The manufacturer warranty requires our certified installation to remain valid, which we document and register for you.
Written by Dylan Pace, Owner at Crestview Roofing, serving Monrovia since 2000.