Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Before
After
Before
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AfterFast, Reliable Roof Installation Across Bloomington
Roof installation in Bloomington means working with San Bernardino County, not a city building department, and that changes the whole permit path. If you’re pricing a new roof on a 1960s tract home near Cedar Avenue or a newer place off Slover Avenue, you need a crew that already knows the unincorporated rules, the wind exposure from the Cajon Pass, and what a tear-off on an older Bloomington roof actually uncovers. We’re Mercer Roofing, and we’ve been doing this work since 2000 as part of the Threshold Group family. Call (743) 200-8347 to schedule your free estimate.
Why Mercer Roofing Is Bloomington’s Preferred Roof Installation Company
Bloomington homeowners call us because we solve the problem most roofers ignore. Before any technician steps onto your property, you get their name and photo sent to you. They arrive in a clean, marked uniform and present a photo ID badge at the door. Every Mercer technician is background-checked and identity-verified under the Threshold Verified standard, which every independently owned Mercer location is contractually held to. That matters when you’re home alone, when your kids are there, or when you simply want proof of who’s at the door.
We work throughout Bloomington, from the older streets around Bloomington High School down to the newer parcels near the Santa Ana River. Our dispatch and scheduling runs through the Inland Empire office, and crews serve Bloomington locally, so we’re not driving from across the county. The 365-Day Done Right Promise backs every installation: if the work isn’t right within a year, we make it right, in writing. No fine print, no phone tag, no voicemail. A live person answers when you call, 24/7.
TPO Roofing Installation in Bloomington
TPO Roofing Installation on Bloomington low-slope roofs and flat sections is one of the most common requests we get from homeowners dealing with chronic leaks or heat degradation. TPO is a reflective single-ply membrane that holds up to the 108 – 115°F summers and high-desert UV better than older built-up asphalt roofs, and it’s often the right call on additions, patio covers, and ranch-style homes with shallow pitches. A typical TPO installation for a Bloomington residential flat or low-slope section runs $8.50 – $13.50 per square foot installed, depending on insulation thickness and edge detail.
When TPO Makes Sense Here
Older Bloomington homes with low-slope rear additions often have failed modified bitumen or torch-down roofs that split and tear at seams during Cajon Pass wind events. We replace those with fully adhered or mechanically fastened TPO systems, including new flashing at all penetrations and proper termination bar at the edges.
What the Installation Involves
We strip the old membrane, inspect the decking for rot, address any ponding water issues with tapered insulation where needed, and then heat-weld the TPO seams. That welded seam is why TPO outperforms older glued systems here, the wind loads off the pass don’t find a weak edge to pull up.
Shingle Roof in Bloomington
Shingle Roof installation in Bloomington is the bread-and-butter job for the 1950s through 1970s tract homes that dominate this community, and most of those homes need a full tear-off, not an overlay. County code caps how many shingle layers a roof can carry, and we routinely find three-layered re-roofs that already exceed the weight limit. A full tear-off and architectural shingle installation on a typical 1,200 – 1,600 square foot Bloomington ranch runs $9,800 – $14,600, with higher-end materials like GAF Timberline pushing toward $16,000 on larger homes with complex valleys.
Tear-Off Before New Shingles
When we pull the old layers, what’s underneath tells the real story. Rotted decking, split rafters at the valleys, original 1×6 skip sheathing that was never designed for three shingle layers. We replace damaged wood and install new decking before the underlayment goes down, and we write the decking repair allowance into your contract up front.
Underlayment and Flashing Upgrades
Bloomington wind events and heat cycles punish the underlayment around penetrations before you ever see a leak. We install ice and water shield in the valleys and along the eaves as standard on re-roofs here, plus new drip edge and flashing at every pipe boot, vent, and chimney. That’s the layer that keeps Cajon Pass wind-driven rain out of your attic.
Trusted Brands We Service in Bloomington
We install and repair shingle roofs using manufacturer-recognized brands including GAF, CertainTeed, Owens Corning, Atlas, and Tamko. For Bloomington customers, we keep common GAF Timberline colorways and Atlas Pinnacle profiles stocked locally, which cuts ordering delays when you’re matching an existing roof section or replacing storm-blown shingles. If you want a roof that handles the heat better than standard three-tab, we’ll walk you through the Atlas StormMaster and GAF Timberline options with real price differences, not just brochure talk.
Common Roof Installation Problems We See in Bloomington Homes
- Layered re-roofs over the county weight limit. Decades of “cheap overlay” roofers have left many Bloomington homes with two or three layers of three-tab shingles. When we pull permits, the tear-off exposes rotted decking and undersized framing that was never corrected underneath.
- Santa Ana wind uplift on low-slope sections. The wind corridor from Cajon Pass hits Bloomington each fall and winter, and improperly fastened low-slope roofing lifts and peels. Old nailing patterns were never matched to the shingle’s rated uplift resistance, so we check and correct fastener spacing on every re-roof.
- UV-cooked asphalt shingles failing early. Bloomington’s 108 – 115°F summer days and intense high-desert sun degrade asphalt shingles years faster than coastal Southern California markets. Granule loss, curling, and cracked seal strips show up on 12 – 15 year old roofs that should have lasted 20 – 25.
- Failed underlayment at penetrations. Pipe boots, vents, and chimneys are where water gets in first on older Bloomington homes, because the original underlayment dried out and split long ago. By the time you see the ceiling stain, the decking below is usually already soft.
Pricing for Roof Installation in Bloomington, CA
Roof installation pricing in Bloomington runs $9,800 – $16,000 for a full tear-off and architectural shingle re-roof on a typical tract home, and $8.50 – $13.50 per square foot for TPO on flat or low-slope sections. What moves the number is decking replacement, rafter repair, and whether the existing roof has multiple layers that require more dump fees and labor. We give you a written price before any work starts, always. That number is fixed unless you approve a change order in writing, and we explain exactly what a “square” means on your quote (one square = 100 square feet of roof area). Call (743) 200-8347 for a free, line-item estimate.
We Also Serve Cities Near Bloomington
Beyond Bloomington, our crews cover Roof Installation in Bloomington and the surrounding communities, including Rialto, Fontana, Riverside, and Grand Terrace. If you’re near the incorporated city lines and your parcel straddles jurisdictions, we check which permit office applies before we pull anything.
Serving Bloomington, CA - Our Local Coverage Area
We’re based in the Bloomington 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 Installation in Bloomington
San Bernardino County Building & Safety issues every roof installation permit in Bloomington because the community is unincorporated. Unlike homes in Fontana or Rialto, which route through their own city building departments, Bloomington properties go straight to the county for permits, inspections, and final sign-off. We handle that process for you, including sequencing the county inspection at the right points so your job doesn’t stall.
Yes, most Bloomington homes built between the 1950s and 1970s need a full tear-off because prior owners already layered new shingles over old ones, and county code limits total roof weight. We routinely find two or three layers on these tract homes, and an overlay would push past the allowed tolerance. Tearing off also lets us repair rotted decking and replace failed underlayment that an overlay would just hide. Call (743) 200-8347 for a tear-off assessment and written quote.
One square equals 100 square feet of roof surface area, and it’s the standard unit roofers use to price materials and labor. When your Bloomington quote says “24 squares,” that’s roughly 2,400 square feet of installed roof. We write our quotes in line items with square counts so you can verify the math yourself, and we explain any allowances (like decking repair) before you sign.
Yes, Bloomington’s 108 – 115°F summer temps and relentless high-desert UV cook standard three-tab shingles faster than coastal schedules, so we recommend architectural shingles with higher UV resistance and granule adhesion. Brands like GAF Timberline and Atlas with Scotchgard or 3M granule protection hold their color and seal strips longer in this heat. We’ll show you the price difference per square so you’re choosing based on local conditions, not a sales script.
A properly installed roof can, but many Bloomington roofs can’t because the old shingles were nailed with the wrong pattern for the uplift loads coming off the Cajon Pass corridor. We check fastener count, nailing placement, and edge details against the shingle manufacturer’s wind rating before we install, and we replace drip edge and starter strip as standard so the windward edges don’t lift. For a wind-resistance assessment on your specific roof, call (743) 200-8347.
Written by Grant Whitlock, Owner at Mercer Roofing, serving Bloomington since our founding in 2000 as part of the Threshold Group family.
Contact Mercer Roofing for Your Bloomington Roof Installation
Every roof installation in Bloomington starts with a written price and a face you know before the door opens. We’ll send you your technician’s name and photo ahead of the visit, they’ll badge in with a photo ID, and you’ll have the full scope and cost in writing before a single nail is driven. The 365-Day Done Right Promise covers the work for a full year. Call (743) 200-8347 to schedule your free estimate.