Commercial Roofing in Pilot Grove, TX

The weakest part of a roof is where it meets something else. A wall, a curb, a pipe or a parapet all break the membrane's continuous sheet. Each break needs a flashing. In Pilot Grove, TX, an unincorporated Grayson County community, the first stop on a commercial roof walk is the line where roof meets wall.

Pilot Grove sits near the Corners, where Grayson, Hunt, Fannin and Collin counties meet. It stands at about 700 feet in elevation and was platted from 1857. We walk each roof, name the system and report what the readings show, in the same order every time.

A wall flashing has three parts. The base flashing turns up the wall from the membrane. The counterflashing laps over it from above. Sealant caps the top edge. Together they let the roof and the wall move without opening a gap.

Over time each part ages. Sealant hardens. Counterflashing loosens. The base flashing, if adhered, can peel. A hairline gap forms. Wind-driven rain enters. The water travels down the wall or along the deck. The stain may appear many feet away.

We check each foot of the wall line. We press the sealant, tug the counterflashing and probe the membrane at the base. We look for pulled seams at inside corners, where the sheet bends most. If a repair is needed, we cut back to sound material, re-adhere or weld the flashing, and install new counterflashing with a fresh bead. A flashing failure repair that skips the wall substrate often fails again. Masonry walls need dry mortar joints. Metal walls need clean, sealed laps. Stucco walls need a weep path. We check the wall type first and match the termination to it.

A parapet is a short wall above the roof. Its top is exposed to sun, rain and wind. A coping cap covers it. The cap keeps water out of the wall. Joints between cap pieces are weak points.

We check coping joint by joint. We look for gaps, loose fasteners and open end caps. We inspect the wall below for stains and cracks. Water that gets into a parapet runs down inside the wall, or behind the flashing. Freeze and thaw then widen each crack, so a small gap in fall becomes a larger one by spring. It can rot framing or rust metal ties.

The repair depends on the cause. Loose cap pieces get re-fastened and sealed. Damaged pieces are replaced. If water has soaked the parapet, we open it up, dry it and rebuild the flashing before the cap goes back. The detail work on edge metal, coping and gutters is a large share of preventive maintenance.

A flashing leak does not always show. Water can enter, spread in the insulation and stay there. The ceiling stays dry until the board is saturated. By then the damage is larger.

A scan finds that water. Infrared and capacitance tools map wet areas. Cores confirm. A core is a small circular sample taken through every layer. It shows the layers in order and the moisture at each. A wet core next to a wall points to a flashing leak. A wet core near a drain points to a drain issue.

An infrared moisture survey keeps cuts few. Each cut is patched the same day with matched material, and the patch is water tested before the crew leaves. The report lists cores, scan maps and photos, each tied to a number on the roof plan.

Sherman's record runs from 113 F down to minus 3 F, and roofs across North Texas live in that range. Wall and roof expand at different rates, so a flashing gets pulled every day, in both directions.

Spring storms add risk, because tornadoes in North and Central Texas bunch up in April and May. The June 8, 2025 storm dropped half-dollar hail near Denison and an EF1 southwest of Sherman, in other places but along the same weather track. After a storm, we check flashings and coping first, since wind loosens them before it touches the field.

Winter brings ice, and the December 2013 sleet put a 4 to 5 inch layer on the Sherman and Denison area. Ice dams at walls can push water behind flashings. A wind damage roof repair or an ice repair starts at the wall line.

The choices are repair, recover or replace, and the scan and cores pick the one that fits.

If wall flashings are the only failure and the insulation is dry, a repair is enough. If flashings have failed along most walls and insulation is wet in bands, a section replacement may fit. If wet insulation covers most of the roof, replacement is the sound choice. A building this far from the main roads gets the same two reports either way, a short one on what failed and a longer one on what the cores showed, so the owner can decide with the evidence in hand.

Cost follows scope. Wall length, parapet height, access and insulation depth all matter. The proposal lists every driver of cost, and the permit office is asked what it requires before a replacement is priced.

Pilot Grove sits near four counties. Crews plan travel from Sherman and Van Alstyne. We ask about access, gates and parking before we arrive, and we confirm the hours when someone will be on site to let the crew in. For roof work, we confirm where the lift or ladder will stand, where material will stage and where the dumpster will go.

A roof taking on water now gets an emergency call-out at any hour, with the opening sealed that night and the permanent fix scheduled once the deck is dry. Pilot Grove sits southeast of Sherman.

Every pipe, vent and curb is a hole in the membrane. Each needs a flashing. Pipe boots split at the top ring. Curb flashings pull away at corners. Sealant at the collar dries out and splits.

We list every penetration on the roof plan. We number them. We check each one with a gloved hand and a flashlight. We look for cracks, gaps, rust and old patches. We note which ones sit in a low spot, since pooled water tests a flashing hard.

Repairs are matched to the item. A cracked boot is replaced. A curb corner is rebuilt with a pre-formed piece. A collar is re-sealed with a compatible product. Where a penetration is no longer used, we recommend removal and a proper patch. A skylight and penetration flashing repair includes a water test at the detail.

The photo record lets an owner see each detail before and after. It also helps the next inspector, who can compare against the same numbered list.

Where do flashings fail first?

At corners and at the top edge, where sealant ages and metal loosens.

What does a coping cap do?

It covers the parapet and keeps water out of the wall below.

How do I know water got into a parapet?

Stains, cracks and efflorescence on the wall point to it. A scan confirms.

Is sealant alone a fix?

Only for a tight hairline gap. Larger gaps need new metal or membrane.

What should I send first?

Tell us the address, the age of the roof and what you have seen inside.