A breezeway is the covered passage that joins an attached garage to the house. In Creve Coeur it shows up on many ranch and split-level homes, built when attached garages were standard and a short roofed walk to the back door was part of the plan. The passage is usually narrow, with its own roof that sits lower than the main house and meets the house wall partway up. When the main roof is replaced, the breezeway is easy to treat as a footnote. It should not be. Its roof has a different pitch, a different drainage path and a different meeting point with the house, and each of those changes what the crew has to do.
Why the breezeway roof is not the main roof
Most breezeway roofs are shed roofs, with one slope falling away from the house wall toward the open side or the garage. A low-pitched shed roof sheds water more slowly than a steep main slope, so snow and standing water sit on it longer. Freeze and thaw cycles in St. Louis County are the reason this matters. Water that stays on a low slope for a day in February can work under the shingle edge, refreeze at the eave and push back up. A roofer who measures the breezeway with the same assumptions used for the house will often under-order underlayment and eave membrane, and the quote will look cheaper than the work needs.
The pitch also decides which shingles are allowed. Asphalt shingle makers publish minimum slopes for standard installation, and below that point the roof needs a different treatment, often a continuous membrane across the full deck. Ask the roofer what the breezeway pitch measures in inches of rise per foot, and ask which method they will use for it. A quote that says "same shingle, same as the house" for a low slope has skipped the question.
The wall flashing is where most of the trouble starts
Where a breezeway roof meets the house wall, water runs down the slope and has to be sent over the top of the flashing at the wall. In a correct installation the wall has step flashing woven with each shingle course, counter flashing set into a reglet cut into the siding or masonry, and a kick-out at the bottom where the breezeway gutter meets the wall. Each piece has a job. Missing one of them is a common cause of a stain on the inside wall of the house, often above the window or door that opens onto the breezeway.
Many leaks here get blamed on the shingles, but the shingles are rarely the cause. A stain on the drywall inside a breezeway wall usually points to the wall junction, the counter flashing, or a gutter that overshoots the wall and sends water behind the siding. Before the tear-off, ask the roofer to show you how the wall junction will be rebuilt, and ask whether the counter flashing will be replaced or only re-caulked. Caulk at a flashing joint is a stopgap, and a roofer who proposes caulk as the wall fix should say so in writing.
The gutter that drains onto the garage apron
Breezeways often have a single gutter along the open edge, and many of them discharge toward the garage roof or straight onto a walk. This gets missed because the gutter is short and sits below the main roof line. If the downspout ends in a short elbow over the garage apron, the water lands on concrete and then runs back toward the foundation in the next rain. If it ends at a splash block that is too small, the water pools against the breezeway footing. Many Creve Coeur lots slope toward the house on the garage side, so the path the water takes is worth tracing before the new gutter is hung.
Ask the roofer where the breezeway downspout discharges now, and whether the new run will keep that discharge point or change it. A change needs to appear on the scope, because it affects the grade, the apron and possibly the neighbor's side of the property line. If a gutter guard is planned for the main house, ask whether the breezeway gutter is included. The open edge of a breezeway collects different debris than the main house, and it may need a different guard or none at all.
Ceiling, soffit and the inside of the passage
The underside of a breezeway roof is often open soffit or a finished ceiling of boards. If the ceiling is finished, the space above it may be small and poorly ventilated, and warm air from the house can reach the underside of the roof deck. Frost forms on the nails in winter, melts in the afternoon and drips onto the ceiling boards. Owners tend to read this as a roof leak, but the cause is usually ventilation and moisture, and a new roof will not fix it unless the venting is addressed. Ask whether the breezeway ceiling will be opened during the tear-off, and if it is, what will be photographed before it closes back up.
Light fixtures, outlets and garage door opener wiring often run through the breezeway ceiling, and a tear-off can disturb them. Mark the locations before the crew starts, and ask whether any wiring above the ceiling will be exposed or moved. If the electrical work changes, the city's building inspector may want to see it, so ask the roofer who schedules that inspection and whether it is on the permit.
What the scope should say about the breezeway
A written scope for a breezeway should name the roof as its own section, with separate measurements, pitch and area, rather than folding it into the main house square count. It should list the underlayment and membrane at the eave, the wall flashing method, the gutter and downspout discharge, and the decking condition, with a note on what the crew will do if rotted boards turn up under the shingles. It should state whether the ceiling will be opened and how the openings will be closed.
Keys documents damage, puts a written scope with photos and measurements in the homeowner's hands, and attends as the contractor while the homeowner deals with their own insurer. A storm-damaged breezeway belongs in the same file as the main roof, and the photos should show each slope, the wall junction and the gutter separately. Missouri law bars a roofing contractor from representing or negotiating a homeowner's insurance claim, and from saying anything about paying, waiving or covering a deductible, so the claim conversation stays between the homeowner and the insurer.
Questions to put to the roofer
- What is the breezeway pitch in inches of rise per foot, and which underlayment method does that pitch require?
- How will the wall junction be rebuilt, and is the counter flashing replaced or only sealed?
- Where does the breezeway downspout discharge now, and where will it discharge after the work?
- Is the breezeway ceiling opened during the tear-off, and what is photographed before it closes?
- Are the lines, fixtures and wiring above the breezeway ceiling identified before the crew starts?
The answers should appear on the written scope, not only in conversation. A roofer who can answer each question with a specific detail has looked at the breezeway. A roofer who answers all of them with the main roof's numbers has not.