IKO Home Additions & ADU Nationwide

IKO Home Additions & ADU: The Fort Worth Owner's Guide

When an IKO product on a Fort Worth home addition or ADU starts failing, the fix usually comes down to matching the failed part to the right replacement and getting it installed before the problem spreads. In this market, a full home addition project typically runs $45,000 – $130,000, and ADU work often lands between $90,000 – $220,000 depending on scope and foundation work. That’s a broad range, so let’s get specific about what actually fails on IKO materials and what it takes to put it right. You’ll typically notice the problem as a slow leak near a flashing point, a roofline sag after a wet spring, or a visible gap in roof decking after a North Texas wind event.

Call (682) 708-9180

Key Takeaways:

• IKO-compatible additions and ADUs in Fort Worth require exact material matching – we stock common profiles and order specialty pieces before demo starts.
• Texas heat and hail shorten the lifespan of roof shingles and underlayment more than anything else; most failures trace back to a seal strip or flashing compromise.
• We’re an independent Fort Worth contractor, not affiliated with IKO. We install and source IKO materials, but warranties on the material itself come from IKO, not from us.
• Every repair or project gets a written price before any work starts, per the Cedarwell Care Promise. No surprises, ever.

Which IKO Models This Applies To

IKO manufactures residential roofing and waterproofing products, and their most common lines we see on Fort Worth additions and ADUs are the Cambridge, Dynasty, Nordic, and Royal Estate shingle lines, along with their StormShield underlayments. The compatibility gotcha: IKO's architectural shingle lines have shifted slightly in dimension over the past decade, so an addition built in 2015 may not accept a 2025-era shingle tab width without reframing or resheathing. Before we touch anything, Graham Stein and the crew pull a board measurement and check the manufacturer date stamp on the exposed edge – those two details tell us whether we can patch or whether we need to re-do the entire slope. When an OEM piece is backordered, we can often use a dimensional aftermarket equivalent for rake and eave repairs, but valley flashing and starter strip should stay OEM whenever possible because of the seal-strip chemistry. If you’re unsure what line is on your roof, look for the printed code on the back side of the drip edge or check the original addition contract – it usually lists the shingle SKU.

Signs Your IKO Home Additions & ADU Is Failing

• Granule loss near the roofline. IKO shingles shed surface granules as the asphalt binder ages in Texas heat, and the gutter line will collect dark grit. This is an early signal that the shingle is losing UV protection and will start cracking soon.
• Curling edges or raised tabs. When the factory seal strip cooks loose after repeated 100-degree days like we get in Fort Worth, tabs lift. Wind-driven rain can then walk up under the shingle and follow the underlayment into the soffit.
• Wave or dip in the roof plane. A subtle depression across an ADU roofline usually points to a failed OSB or plywood deck beneath the IKO underlayment, not a shingle problem. This shows up most often on flat or low-slope sections that hold standing water after a storm.
• Damp drywall around can lights or wall-to-roof junctions. Water coming through the ceiling near the addition's connection to the original house almost always traces back to step flashing at the dormer or the sidewall seam. IKO's StormShield can only do its job if the flashing overlaps correctly.
• Crackling sounds in high wind. If you hear the roof surface flexing during a Fort Worth front moving through, the shingles may have lost their adhesive bond below the visible edge. This is a common post-hail finding that looks fine from the ground but fails under the first real storm.

Replacement Cost & What's Included

Let's put real numbers on it. For a full home addition with IKO roofing and proper flashing, plan on $45,000 – $130,000 in Fort Worth. A detached ADU with kitchenette and bath typically runs $90,000 – $220,000, driven mostly by foundation type, utility trenching distance, and finish level. A partial fix – a roof slope replacement, a flashing correction, or an underlayment repair – often falls between $2,000 and $8,500 depending on square footage and access difficulty. What's in our price: the named IKO material or specified equivalent, all tear-off and haul-away, drop cloths and shoe covers inside the house, a written scope of work before any tool comes off the truck, and a photo of the clean-up before the crew leaves. The 365-Day Done Right Promise covers our workmanship on every completed project, so if something isn't right within a year, we make it right. IKO's manufacturer warranty runs separately and follows the named product.

DIY or Call Us?

There are two safe checks you can do from the ground: look for granule accumulation in the gutters after a rain, and shine a flashlight along the rake edge at dusk to catch lifted tabs. That's where most owners should stop. A roof deck, a flashing seam, or a failed underlayment is not a weekend fix – working on a pitched Fort Worth roofline without fall protection or proper tie-off points is how people get seriously hurt. The same honesty applies to the heavy framing work on additions and ADUs: if you have to ask whether a load-bearing wall can move, it can, but only after an engineer signs off. Our crew includes people who have done this work for years, and Graham has the Trade-Technical training to know when a repair can be scoped to a day and when it needs a full permit set. Call (682) 708-9180 if you want a straight answer and a written price before anything starts.