IKO Home Additions & ADU Nationwide

IKO Home Additions & ADU: The Pompano Beach Owner’s Guide

IKO-compatible structural components for home additions and ADUs in Pompano Beach typically run $45,000-$130,000 installed, depending on whether you’re extending an existing foundation or building a detached unit from slab to roof. We stock IKO’s Cambridge, Dynasty, and Marathon shingle lines for the roofing envelope on these projects, and we can usually get specialized IKO accessory parts within 24-48 hours through our distributor in Fort Lauderdale. Most Pompano Beach homeowners discover their IKO roofing system needs attention during a home addition or ADU project when the existing roof tie-in fails to match the new construction, or when the original IKO underlayment shows UV breakdown after 12-15 years in the Florida sun.

Call (754) 714-6540

Rowan Construction Group Pompano Beach is an independent contractor - we are not affiliated with IKO Industries, though we source their products regularly and know where their spec sheets differ from GAF or Owens Corning.

Which IKO Models This Applies To

The IKO products we specify for Pompano Beach home additions and ADUs fall into three roofing lines and their accessory systems. Cambridge is the architectural laminate line, Dynasty is the ultra-premium heavyweight shingle with ArmourZone reinforcement, and Marathon is the traditional three-tab that still covers plenty of the older stock in Broward County. For additions, the critical match point is not just color - it’s the exposure width and the nail zone geometry, because a Cambridge shingle at 5 5/8″ exposure will not line up with a Dynasty at 5 7/8″ without a deliberate transition detail.

To identify what you have, check the cellophane strip on the shingle back or the bundle label for the series name and the “UL 2218 Class 4” or “Class 3” impact rating. The Pompano Beach wind zone requires a minimum 110 mph rating, which IKO labels as “Wind Resistant” or “High Wind” depending on the vintage. We also see confusion between IKO’s traditional felt underlayment and their newer synthetic SharkSkin line - the synthetics require cap nails at 6″ o.c. in the field, not staples, and we’ve found that retrofitting an addition with mismatched fasteners voids the system warranty.

OEM IKO parts are our default for ridge caps, starter strips, and ventilation accessories because the color match is exact. For ice-and-water shield in our climate, we sometimes specify a quality aftermarket equivalent - Grace Ice & Water Shield or Polyglass - because IKO’s Pro4 system is adequate but overpriced for a region that sees freeze-thaw cycles rarely.

Signs Your IKO Home Additions & ADU Is Failing

• Granule loss exposing the fiberglass mat. IKO’s asphalt coating oxidizes faster in Pompano Beach’s salt-air environment than inland Florida, and once the ceramic granules wash into the gutters, the mat UV-degrades in 18-24 months. We see this most often on the south and west faces of additions where the original roof was not designed for the extended exposure.
• Lifted or creased shingles at the addition tie-in. The differential settlement between old and new construction creates a shear plane; IKO’s sealant strip can fail to re-bond after wind flexing, especially if the addition foundation was poured on fill without proper compaction. The result is a zipper pattern of lifted tabs after a storm.
• Interior drywall cracks at the ceiling corner where addition meets existing. This is not always foundation movement - sometimes it’s the IKO roof system allowing bulk water past a failed step flashing at the valley. The water tracks along the top plate and shows up as a stain or crack days after the rain stops.
• Excessive attic heat in the ADU portion. IKO’s standard ridge vent, when paired with insufficient soffit intake, creates a short-circuit ventilation pattern. In Pompano Beach’s humidity, this accelerates shingle curling from the underside and can push attic air conditioning loads up 20-30 percent.
• Standing water behind the cricket or saddle on the addition’s high side. IKO shingles are not designed for ponding - the Cambridge line carries a 10-year algae warranty but no standing-water provision. Poor cricket geometry in the original addition design, or IKO shingle installation below the 2:12 minimum slope for architectural products, leads to premature failure at the 7-9 year mark in our market.

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Replacement Cost & What’s Included

The spread on home additions reflects three variables: whether we’re matching an existing IKO roof or replacing the whole field, the foundation type (stem wall vs. monolithic slab), and the permit path - Pompano Beach requires ADUs to meet the Florida Building Code 7th Edition wind provisions, which adds engineered drawings and a second inspection cycle. Our quote breaks out IKO materials at distributor cost plus 15 percent, labor at a fixed hourly rate, and permit fees at actual - no markup, no surprises.

Under Clause 1 of the Haven Standard, the price is written before anyone starts. The 365-Day Done Right Promise covers the workmanship; IKO’s own limited lifetime warranty covers manufacturing defects on the shingles. We register that warranty in the homeowner’s name, not ours, so it transfers if you sell.

DIY or Call Us?

There’s a short list an owner can safely check: confirm the IKO series name from the bundle label, photograph any lifted shingles for our review, and verify that attic vents are not blocked by storage. Do not climb the roof - the tie-in valley on an addition is often steeper than the original pitch, and the step flashing detail is where most DIY attempts create a leak that doesn’t show for two rainy seasons.

What goes wrong: homeowners buy mismatched IKO shingles from a big-box store without checking exposure width, install them with the wrong nail pattern (IKO Dynasty requires six nails per shingle in high-wind zones, not four), or use standard felt over SharkSkin-compatible decking and wonder why the warranty claim is denied. The structural connection between addition and existing house - the ledger, the shear transfer, the continuous load path - is engineered work in Florida, not handyman territory.

Call (754) 714-6540 and we’ll schedule a free estimate. We bring the IKO color samples, the moisture meter, and the photo record that documents what we found before we quote.

FAQs