Hopkinton, RI Roof Repair: GAF Timberline HDZ Shakewood, Mod-Bit Low-Slope, Chimney & Siding

Like most Pinnacle roofing projects, the work was completed in a single day — minimizing disruption for the homeowner.

Pinnacle makes every project affordable with monthly financing options, including 0% interest for 18 months.

This home on Willow Drive in Hopkinton needed more than one trade in one visit: a weathered main roof, a leaking low-slope porch section, a chimney whose flashing had given up, and a stretch of siding to make right. We rebuilt the field in GAF Timberline HDZ shingles in Shakewood, replaced the flat porch roof with self-adhered modified bitumen, rebuilt the chimney flashing, and reset the siding with a proper water barrier behind it.

Scope of Work

We tore the main roof to the deck, replaced any rotted sheathing, and laid a full weatherproofing system of ice-and-water shield at the eaves and valleys, synthetic underlayment, new drip edge, and starter strip before installing the Timberline HDZ shingles and matching ridge cap. Over the rear porch, where the pitch goes nearly flat, we installed a self-adhered mod-bit rolled-asphalt membrane with sealed seams. At the chimney we stripped the failed flashing and rebuilt it with new step-flashing and counterflashing, and during the siding portion we set a Henry Blueskin self-adhered water barrier around a new window before the panels went back. It was a genuine multi-system roof repair, each element handled by the same crew in one coordinated pass.

What We Installed (And Why)

The main roof got GAF Timberline HDZ, a dimensional architectural shingle with a wide, forgiving nailing zone and a high wind rating that makes for a fast, precise install and a roof that holds its line in a storm. Pairing it with a self-adhered mod-bit membrane on the low-slope porch means each part of the roof uses the product engineered for its pitch, steep shingles above, seamless membrane where water lingers.

The Shakewood color gives the shingles a warm, wood-shake tone that suits Hopkinton’s rural, old-New-England character. Just as important as the color is what happens at the chimney: a proper flashing rebuild, with step-flashing woven into the courses and counterflashing locked into the masonry, is the difference between a chimney that sheds water for decades and one that quietly rots the deck around it.

Project Photo Gallery

Rebuilt chimney flashing on GAF Timberline Shakewood roof, Hopkinton

Mod-bit rolled asphalt roof over rear porch, Hopkinton

Henry Blueskin water barrier at new window during siding

Good To Know: Why does chimney flashing fail before the shingles do?

Because the chimney is the hardest-working joint on the roof. It is where masonry meets shingles, and the two expand, contract, and settle at different rates, so any flashing that was caulked instead of properly layered eventually pulls loose. The lasting fix is mechanical, not sealant: step-flashing tucked under each shingle course and separate counterflashing set into the mortar joints, so the two surfaces can move independently and still stay watertight. Done that way, the chimney stops being the first place a roof leaks.

Why This Approach Works

Bundling the roof, the porch membrane, the chimney, and the siding into one coordinated visit is not just convenient, it is how you stop leaks for good. Water rarely respects trade boundaries, so a new field of shingles means little if the chimney flashing or a window’s water barrier is still letting moisture in behind it. By addressing every path at once, with the right material on every slope, we gave this Hopkinton home a roof and envelope that work as a single, sealed system.

Why Pinnacle

Pinnacle Roofing & Skylights has served Rhode Island since 2012 and is a GAF Certified Roofing Contractor, so this Timberline HDZ roof was installed by a factory-authorized crew to the standard GAF’s warranties require. From the shingle field to the chimney flashing to the siding detail, it was one team accountable for the whole job. We hold a 5.0-star Google rating with 100+ five-star reviews and an A+ rating from the BBB, and we carry RI Residential License #39446.

Hopkinton, RI

Hopkinton is a quiet, wooded town in Rhode Island’s rural southwest, dotted with historic mill villages, farmhouses, and homes set back among the trees. Heavy tree cover and older chimneys make flashing and moisture detailing especially important here. Learn more about the work we do for area homeowners on our Hopkinton roofing services page.