Roof Repair in Stouffville

The old commercial buildings on Main Street present problems a house roof never does. Many carry several generations of roofing, built-up tar and gravel under modified bitumen under whatever went on last, and each overlay raised the roof surface a little further up the parapet until the flashing at the wall no longer laps far enough to keep water out. Drainage is often shared or improvised between adjoining buildings, so a blocked scupper next door can put water into your ceiling.

A lasting repair starts with finding out what is actually on the roof. We take a core sample where needed to count the layers and check for trapped moisture, confirm whether the structure can carry another overlay or the roof should come back to the deck, and treat the parapet as part of the roof rather than a separate problem. Work is scheduled around the businesses below, and where a building carries a heritage designation, we confirm what review the exterior work needs before quoting.

Many rural properties in Whitchurch-Stouffville have at least one steel roof, usually on a barn, drive shed or garage, and older exposed-fastener panels fail in a predictable way. The screws are sealed with rubber washers that harden and crack with age, and the panels expand and contract through every hot afternoon and cold night, which works the fasteners loose a fraction at a time. Water then gets in at many small points rather than one, and it often goes unnoticed until the framing, or whatever is stored underneath, shows the damage.

Repairing those roofs is usually a matter of replacing the fasteners with slightly larger ones and new washers, resealing the side and end laps, and treating rust before it perforates the panel. Farmhouses on the same exposed lots need a different kind of attention: wind across open fields lifts shingle edges and ridge caps, so we check the fastening along the exposed slopes as well as the obvious damage. On both, the written report says what can be repaired and what has reached the end of its life.

A same-day diagnosis means establishing, on the first visit, where the water is actually entering, which is often a metre or more from where it drips. Water runs along the underside of the deck, down rafters and across the top of the ceiling vapour barrier before it finds a way through, so we start in the attic wherever there is access and work back from the stain to the entry point. On the roof, we check the likely details in order, flashings, penetrations, valleys and eaves, rather than replacing shingles on a guess.

It does not always mean a same-day repair. Sometimes the fix needs matched material, dry weather or a second trade, and a rushed repair on the first visit would only be a patch. What you do get the same day is the leak contained, the cause identified, and photographs showing both, so the permanent repair can be priced properly and put in writing.