Available 24/7

Metal vs Asphalt Roofing in Valley Mills: Technical Guide

86192c02 bee8 4825 81a6 131c10a6caa2

Most Valley Mills homeowners who call Our Team about a roof replacement start the conversation with the same question. Should I just stick with asphalt shingles, or is this the moment to finally look at metal? It is a fair thing to ask, and the honest answer depends on how long you plan to stay in the house, what your neighbors are doing, and how your current roof actually failed. Aaron Christy founded Our Team back in 2018 with a simple rule that still guides every inspection we run across Central Indiana. If your roof does not need replacement, we will tell you. That same straight shooting approach is what you deserve when you are weighing two roofing systems that behave very differently in the wind, hail, ice, and humidity swings that define an Indiana year.

This guide is not a sales pitch for one material over the other. Asphalt still covers roughly four out of five homes in our service area for good reasons, and metal earns its keep in situations where those reasons stop applying. By the time you finish reading, you should have a clear sense of which system fits your Valley Mills home, your budget window, and the decade or two of weather ahead of you.

Step by-Step: How We Spec Metal vs Asphalt

  1. Measure the roof and confirm pitch. We field measure in squares (1 square = 100 sq ft). A typical Valley Mills ranch runs 18 to 28 squares. Pitch is recorded as rise over 12. Asphalt shingles require a minimum 2/12 pitch, with special underlayment below 4/12. Standing seam metal can go as low as 1/12 with sealed seams.
  2. Inspect the decking. We pull 3 to 5 shingles in different zones and check sheathing thickness (7/16 OSB or 1/2 inch plywood is standard). Soft spots, delamination, and nail pops are flagged. Budget 1 to 3 sheets of replacement on most tear offs.
  3. Document ventilation. Code requires 1 sq ft of net free vent area per 150 sq ft of attic space, split 50/50 intake and exhaust. We count soffit vents and measure ridge vent linear feet. Undersized intake is the single most common defect we find on Valley Mills homes built before 2005.
  4. Choose the system. Asphalt architectural shingles (Owens Corning Duration, Malarkey Vista) deliver a 25 to 30 year realistic service life at $4.50 to $7.50 per sq ft installed. Standing seam metal (24 gauge steel, 1.75 inch seam) delivers a 40 to 60 year service life at $11 to $16 per sq ft installed. Exposed fastener metal (29 gauge) sits between at $7 to $10 per sq ft but requires gasket replacement at year 20.
  5. Select underlayment. For asphalt, we specify synthetic underlayment (Titanium UDL30 or equivalent) across the field and self adhered ice and water shield 24 inches past the interior wall line at eaves, plus all valleys and penetrations. For metal, we specify high temp ice and water shield (240 F rating) across 100 percent of the deck to handle thermal cycling.
  6. Plan the drip edge and starter. Drip edge is installed under underlayment at eaves and over underlayment at rakes, with a 2 inch overlap at splices. Asphalt systems use a factory starter strip with a sealant bead positioned 1 to 3 inches from the eave edge. Metal systems use a hemmed pan lock or cleat, fastened 12 inches on center.
  7. Set the fastener schedule. Asphalt shingles require 6 nails per shingle in high wind zones (anything rated above 110 mph), driven flush with 1.25 inch galvanized roofing nails into the nail line. Standing seam metal uses concealed clips every 16 to 24 inches with stainless or coated screws. Exposed fastener metal uses #10 painted screws with EPDM washers at 24 inches on center at laps and 12 inches on center at eaves.
  8. Detail the penetrations. Pipe boots should be lead or silicone (not neoprene, which fails at year 10 to 12 in Valley Mills UV exposure). Step flashing at walls is 4x5 inch pieces, one per shingle course. On metal, we use custom bent pan flashing with butyl tape sealant, never caulk alone.
  9. Install valleys correctly. Closed cut valleys are standard on asphalt: one side runs through, the other is trimmed 2 inches off center with a dubbed corner. Open metal valleys (W-valley, 24 gauge) are standard under metal panels and optional under premium asphalt, with hemmed edges and concealed clips.
  10. Set ridge and hip details. Asphalt uses hip and ridge cap shingles nailed 1 inch back from the exposure line. Ridge vent is cut 3/4 inch back from the ridge board on each side, covered with baffled vent (Owens Corning VentSure or equivalent). Metal ridges use a vented closure strip with foam profile inserts matched to the panel.
  11. Verify expansion allowances on metal. Panels longer than 30 feet need slotted clip holes or floating fastener points to allow 1/16 inch per 10 feet of thermal movement. Skipping this causes oil canning and fastener back out.
  12. Document the install. We photograph every deck repair, underlayment layout, flashing detail, and fastener pattern. The packet goes to you with the manufacturer warranty registration (50 year non prorated on Owens Corning Platinum, 40 year on most metal paint systems like Kynar 500).

Quick Comparison: Key Specs Side by Side

  1. Weight: Asphalt architectural = 240 to 280 lb per square. 24 gauge standing seam = 100 to 150 lb per square.
  2. Hail rating: Class 4 impact shingles (Malarkey Vista AR) match most 26 gauge metal for impact resistance. 24 gauge metal exceeds Class 4.
  3. Wind rating: Asphitec 130 mph standard, 150 mph with 6-nail pattern. Standing seam tests to 160 mph with proper clip spacing.
  4. Insurance impact: Class 4 shingles and metal both qualify for impact resistant discounts with most Valley Mills carriers, typically 10 to 25 percent off the roof portion of premium.

Getting an Honest Recommendation for Your Valley Mills Roof

There is no universal right answer between metal and asphalt, only the answer that fits your house, your timeline, and your budget. Our Team will walk your roof, show you photos of what we find, and give you a straight recommendation even if that recommendation is to wait another two seasons before spending a dollar. Schedule a free inspection when you are ready, and we will help you decide with real information rather than pressure.

Frequently Asked Questions

Is a metal roof really worth the extra cost in Valley Mills?

It depends on how long you plan to stay. If you will be in your Valley Mills home another 25 years or more, the math gets much closer because you avoid a second replacement. For shorter timelines, a quality architectural shingle usually delivers better value.

Will a metal roof be loud during Indiana thunderstorms?

Not in the way people imagine. With a solid deck, synthetic underlayment, and attic insulation, a standing seam roof on a finished Valley Mills home sounds only marginally louder than asphalt. Open pole barns with exposed metal are where the stereotype comes from.

Does hail damage metal roofs in central Indiana?

Hail can dent softer metal panels, especially aluminum, but denting rarely causes leaks. Asphalt shingles lose granules and can fracture mats in the same storm, which is why Our Team inspects both systems carefully after any significant Valley Mills hail event.

Can you install metal roofing over existing shingles?

In some cases yes, using a batten system, but we usually recommend a full tear-off. Going over existing shingles traps heat, hides deck damage, and can void manufacturer warranties. Our Team will walk you through the options after inspecting your deck.

How do I know if my current roof actually needs replacement?

The honest answer is that many roofs we inspect do not need replacement yet. Our Team checks granule loss, sealant failure, flashing condition, and deck integrity before making a recommendation. If your Valley Mills roof has useful life remaining, we will tell you that plainly.