ALVTA Roofing & Construction

The system

A spec, then the job, then the materials.

We do not explain a roof with a mood photo. The cut shows order. The sequence shows how it is built. The close-ups show what the names actually look like.

House roof in progress: new charcoal shingles on the lower slope, gray underlayment still open toward the ridge, bundles at the peak

In this photo

New charcoal field on the lower slope. Gray underlayment still open toward the ridge. Bundles staged at the peak. The top is last because water runs downhill.

The spec

Each step is a photo of that material.

Scroll. The picture changes to the real piece — OSB, drip metal, ice membrane, underlayment, shingle, gutter. The caption names what is in the frame. The list on the right stays with you.

OSB roof deck: wood-flake sheets, seams, nails, a chalk line, and an open bay showing rafters
Bronze metal drip edge kicking into a white gutter under charcoal shingles
Black granular ice-and-water membrane rolled onto OSB with white release film peeling back
Gray synthetic underlayment with cap nails; black ice-and-water at the eave; OSB still visible at the edge
Nail gun fastening a charcoal architectural shingle; gray underlayment still open above the last course
White K-style gutter under bronze drip edge and charcoal shingles

In this photo · 01 Deck

OSB — compressed wood flakes, sheet seams, nail heads, a chalk line. The open corner shows the rafters this deck is nailed to. Nothing else is on it.

Air under this stack is a separate subject. How the attic is supposed to breathe.

The job

Replacement, in the order we build it

How we treat you is on process. This is the roof. Each frame is captioned for what is in it.

Old brown shingles stripped back, tan OSB deck showing, tear-off shovel under a course

01 · Tear-off

Old field coming off. The wood underneath is what we came to see.The existing shingles and underlayment come off. Overlay is a different, lesser job — and we will name it if that is what is proposed.

OSB roof deck after tear-off, sheet seams, nails, and a chalk line

02 · Deck

OSB sheathing, seams, nails, chalk line. Soft sheets come out before anything new goes on.If the deck is worse than the estimate, we stop and talk. New shingles do not heal rotten wood.

Black granular self-adhering ice-and-water membrane on OSB, white release film peeling back

03 · Ice & water

Black granular membrane stuck to the deck. The white strip is the release film. This is the eave backup for ice dams.Typical in metro Detroit at eaves, valleys, and penetrations. It seals around the nail.

Pneumatic nailer fastening a charcoal architectural shingle; gray underlayment still open above

04 · Shingles up

Nail gun on the nailing zone. Charcoal field below. Gray underlayment still open above — the roof is built uphill.Starter at the eave, then courses to the ridge. Offset joints. The pattern on the wrapper, not a crew habit.

Finished charcoal architectural roof with ridge-cap shingles over the peak

05 · Ridge

Cap pieces folded over the peak, field closed. This is the last weather layer on the slope.Ridge cap over a vent does not pinch the slot shut. Magnets, gutters, walkthrough after.

Materials we install

The suppliers on the wrapper

GAF
Owens Corning
CertainTeed
Grace / GCP
Air Vent
GAF
Owens Corning
CertainTeed
Grace / GCP
Air Vent

Not a manufacturer’s manual. Not local code. Not a quote. Some houses need a flashing repair, not a replacement. We would rather say that.

Want this walked on your roof?

A visit is to look — then say what we saw, what we cannot see yet, and what the job would include.