Metal roofing
Architectural shingles
Tile roofing
GAF
Owens Corning
Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Fast, Reliable Roof Replacement Across West Covina
Replacing a roof in West Covina most often means re-roofing a 1950s – 70s tract home or a 1980s – 90s hillside tile home, not building new. Millstone Roofing handles both from first inspection through final shingle, and we carry seven major material brands so the roof you get is the roof your house actually needs, not the one easiest for us to stock. Call us at (855) 341-6021 and we’ll start with a written inspection report before anyone quotes a tear-off. No pitch, no pressure, just documented findings from a crew familiar with every ZIP code from 91790 to 91793.
Why Millstone Roofing Is West Covina’s Preferred Roof Replacement Company
West Covina homeowners ask us the same question in different ways: how do I know the roofers understand what my house is up against? The answer sits in the details. We know that the original 1960s concrete tile roofs around the 91790 and 91791 ZIP codes are failing at the underlayment level while the tile on top still looks fine from the street. We know that south- and west-facing slopes in the San Gabriel Valley bake sealant and felt brittle years faster than the north side of the same roof. That kind of local knowledge changes what we look for during an inspection, and it’s exactly the kind of thing a roofer who hasn’t done hundreds of these jobs in West Covina will miss.
Nelson Ibarra leads our Roof Replacement team, and the process he built is inspection-first for a reason. Before we propose touching your roof, we document what we see: the age of the underlayment, the condition of the decking, the state of the flashings, the evidence of Santa Ana wind lift. That report becomes the basis for every recommendation we make. Homeowners tell us the difference is obvious: they get straight answers about what needs replacing and what can wait. If a repair is the honest answer, we say so. If replacement makes sense, we can show why with the findings in hand.
We’re based in Pomona but work throughout West Covina every week. Our crews know the older flat streets around Valinda and the steeper eastern hills equally well, and we understand the different failure patterns in each. That means a roofer who can actually tell you whether your 1970s tract roof has one more season in it or whether your 90s tile underlayment is already dust.
Styles & brands we work with






New Roof Installation in West Covina
New Roof Installation in West Covina is most common on the eastern-hills lots where 1980s – 90s stucco-and-tile construction dominates, and it’s a different animal than the re-roof work on the older flat tract streets. A full new roof means stripping everything to the deck, replacing any failed sheathing, installing new underlayment, and then putting down the material the house calls for. A typical new asphalt shingle roof on a West Covina home runs from about $12,000 to $26,000 depending on square footage and slope, while a new concrete tile roof on the hills runs higher, often $28,000 to $45,000 or more, because tile profiles and HOA-driven color matching add up fast.
Working with HOA Architectural Review
On the newer master-planned developments in the eastern hills, the HOA typically has architectural review power over tile color, profile, and even visible ridge vent style. That means a like-for-like concrete tile match often has to be approved before tear-off starts. We’ve helped enough West Covina homeowners through that process to know how to prepare a submittal that gets through quickly without guessing.
New Construction Roof Systems
For new construction in West Covina, the conversation shifts toward getting the system right the first time since retrofitting a roof on a new build is a waste nobody wants. We install complete systems including insulation baffles where needed, proper ventilation, and your choice of material across seven brands including CertainTeed, Owens Corning, and IKO. The material decision follows the roof’s needs and your budget, not a supplier quota.
Reroofing in West Covina
Reroofing in West Covina is the bread-and-butter of this market because the housing boom here from the 1950s through the 1970s put tens of thousands of roofs up that are now on their second or third shingle layer. Reroofing means removing the existing roof system down to the deck, repairing or replacing damaged decking, installing new underlayment, and then installing the new material from scratch rather than layering over old shingles. A full tear-off and re-roof on a typical 1,200 to 1,800 square foot West Covina tract home using architectural asphalt shingles generally runs $11,000 to $22,000.
Reusing Sound Concrete Tile
On a master-planned stucco-and-tile home in the hills, our crew found the original 1990s concrete tile still sound but the underlayment baked brittle on the south slope, and the owner wanted the builder-grade tile upgraded. We pulled the field tile, replaced failed decking, laid new ice and water shield in the valleys and penetrations, reset the original tile for a color match the HOA would approve, and finished with new drip edge and ridge vent. The result was a warranty-safe re-roof that passed architectural review without a full tile change. That’s the kind of job that doesn’t show up on a generic roofer’s proposal.
Reroof vs. Layover
Some West Covina homeowners ask about layering a second shingle roof over the first to save money. We don’t do it, and we’ll tell you why: layering hides decking damage that only gets worse, adds unnecessary weight the framing wasn’t designed for, and shortens the life of the new roof. A clean tear-off lets us see what’s actually happening underneath and fix it before it becomes a structural problem.
Trusted Brands We Service in West Covina
We stock and install GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral, which means the recommendation is driven by your roof and your budget, not by what we happen to have on the yard. For West Covina homeowners that matters because the right material for a 1950s flat tract home is often not the right material for a 1990s hillside tile roof. CertainTeed’s architectural shingle line covers a lot of West Covina’s older tract homes well, while Owens Corning and IKO products give us strong options for the steeper eastern slopes. Concrete tile from Boral is the obvious choice for HOA-governed tile replacements. Carrying these lines means we can bring the material that fits the house, and we can usually get what’s needed quickly for West Covina jobs from local suppliers.
See the difference
Before
After
Before
After
Before
AfterCommon Roof Replacement Problems We See in West Covina Homes
- Baked out underlayment on 1980s – 90s hillside tile roofs. The concrete tile on top still looks intact, but the felty material underneath has turned brittle and cracked on south- and west-facing slopes, so a roof that looks solid from the street leaks into the attic after the first real storm.
- Santa Ana wind damage on exposed hillside lots. Dry wind events each fall lift and crack weathered ridge tiles and shingle tabs, particularly on homes with little tree cover high in the 91792 and 91793 ZIP codes.
- Builder warranty complications. Homeowners who alter or replace an original roof on a newer master-planned home can void a still-active builder warranty if the new system isn’t documented to spec for both the HOA and the builder.
- Third-layer shingle roofs on 1950s tract homes. Many of West Covina’s older homes along the flatter streets have been layover-ed twice already, and the decking underneath is hidden damage none of the previous layers fixed.
Pricing for Roof Replacement in West Covina, CA
A typical roof replacement in West Covina using architectural asphalt shingles runs $11,000 to $22,000 on the older flat tract homes and $14,000 to $28,000 on larger two-story homes with steeper or more complicated roof lines. Concrete tile replacement on the eastern hills generally lands between $28,000 and $45,000 depending on square footage, tile profile, and HOA-driven color matching requirements. What moves the number: square footage, number of roof planes, height, decking condition, and whether the existing material is shingle or tile. We give free written estimates with line-item pricing, and we don’t change the number once work starts unless your decking reveals something the inspection couldn’t have seen. Call (855) 341-6021 to schedule your free inspection and estimate.
We Also Serve Cities Near West Covina
If you’re in Valinda, South San Jose Hills, La Puente, or Irwindale, you’re in our regular service area and we can run the same inspection-first process for your Roof Replacement in West Covina and the surrounding communities. Call us at (855) 341-6021 and we’ll schedule a time that works for you.
Serving West Covina, CA — Our Local Coverage Area
We’re based in the West Covina 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 West Covina
Not if the new system is documented to spec for both the builder and the governing HOA’s architectural review standards. What voids warranties is undocumented changes: different tile profiles, modified ridge vent styles, or underlayment that doesn’t meet the builder’s original specification. We put together the documentation West Covina homeowners need before work starts, and every material choice gets recorded so if a warranty claim ever comes up, you have a paper trail. Call (855) 341-6021 if you want a roofer who takes that seriously.
Yes, and it’s often the smartest move. When the concrete tile itself is still sound but the underlayment beneath is baked out, we can lift the field tile, replace the failed decking, install new underlayment including ice and water shield in valleys and penetrations, and reset the original tile to maintain the same HOA-approved color and profile. This saves the homeowner the cost of an entire new tile package and avoids an architectural review fight. Call (855) 341-6021 for a free inspection to see if your tile is a candidate for this approach.
The HOA typically has architectural review authority over tile color, profile, and visible ridge vent style on the master-planned stucco-and-tile homes in the eastern hills. This means a like-for-like concrete tile match often must be approved before tear-off can start, while the older 1950s tract streets around 91790 and 91791 have no HOA governing roof changes at all. We know how to prepare the submittal so it clears review quickly. Call (855) 341-6021 and we’ll walk you through what your development’s rules actually require.
We quote by the square, which is a 10 foot by 10 foot area of roof surface, not house square footage. For West Covina homes the per-square rate typically runs $380 to $600 for architectural asphalt shingles including tear-off, underlayment, and installation, depending on roof complexity and height. Concrete tile runs higher. Our estimates are free and include the full breakdown of squares, not just a round number. Call (855) 341-6021 for a written quote on your specific roof.
Yes, and it’s what we recommend for most of those roofs. Architectural shingles add thickness and wind resistance without the weight of tile, which matters on older framing that wasn’t engineered for concrete. CertainTeed and Owens Corning both offer architectural lines that handle West Covina’s summer heat and Santa Ana wind events well, and they come with manufacturer-backed warranties. Call (855) 341-6021 for an inspection and we’ll tell you honestly whether architectural shingles make sense for your roof.
Written by Nelson Ibarra, Owner at Millstone Roofing, serving West Covina and the San Gabriel Valley.