Window Replacement in Seaside, OR
Fogged Glass Replacement. Hardware & Lock Repair. Draft Fixes. Caulking & Seal Repair. Free Estimates. Licensed OR #241979..
The City of Seaside's design criteria handout carries one line that inland cities do not have. It defines Exposure D, the category the code writes for wind off open water, as "flat, unobstructed areas exposed to wind flowing over open water extending inland from the shore" for a distance of 1,500 feet. The state code's own reach for that category is 600 feet, or 20 times the building's height, whichever is greater. Seaside's building department draws the line two and a half times farther from the surf, and a replacement window is one of the components the residential code says is designed to withstand that wind. So in Seaside, the first fact about a window is how far the house stands from the beach.
What the number on the label means
A window installed in an Oregon house must be tested and labeled to the A440 standard, and the label carries a performance grade based on a design pressure in pounds per square foot. That is the number to match to the site. The code sets the site's load by the design wind speed for the county, the height of the roof, the exposure category of the lot, and where on the wall the window sits, because the corners of a house take more suction than the middle of a wall, on every wall, whichever way the wind is blowing. For Clatsop County, the special wind region speed is 120 miles an hour. Exposure D at the roof height of a two-story house multiplies the base load by about 1.6; Exposure B, the sheltered category that covers most of a town, multiplies it by less than one.
Put the numbers together, and a corner window on a two-story house inside Seaside's 1,500-foot reach should carry roughly 33 pounds per square foot, which calls for a DP35 unit and, with any margin, a DP40. The same house plan on a sheltered lot beyond the reach works out to roughly 20 pounds, which a DP20 unit just covers and a DP25 covers with room. In the inland metro counties, where the design speed is 98, the same corner window needs about 13 pounds and a DP15 passes. A window ordered by size alone is ordered without any of this, and whether the unit on the order meets the site is a line the estimate has to carry.
Where the 1,500 feet reaches
Seaside is a narrow town, and the city's line runs through it. The oceanfront is inside the reach on any reading of the handout. How far it extends on any particular street, and what counts as open water when the river lies between the house and the beach, is the building department's determination. On any lot where the answer is not obvious, VResh Construction asks the department before an order is written. The estimate then names the exposure it was designed for on its first page and gives the design pressure for each opening beside the size, so the homeowner can see why a corner window carries a higher number than one in the middle of the same wall.
No inspector sees a replacement window
The exposure line in Seaside's handout is written for permitted work, the plans the department reviews for new construction and additions. A like-for-like window replacement is exempt from a building permit under the state's list, so no inspector will look at the label before the trim goes on. On a replacement, the handout's line is still the right answer, and the only person in a position to apply it is the contractor writing the order. The DP number belongs on the estimate. If it is not there, ask why.
Oregon has not adopted the code's wind-borne debris provisions, so impact-rated glass is a choice on this coast, not a requirement. The wind tests the whole unit, frame, sash and lock together. The salt tests the hardware alone, and for ocean-side openings VResh specifies stainless or coated locks and hinges and notes this on the estimate; the Seaside hub page describes what salt air does to metal over the years, and a window lock is one of the first places it shows up.
The installation itself, the flashing, the sill pan and the air seal, is the main window replacement page's subject and does not change on the coast.
Serving Portland Metro Area
VResh Construction provides window replacement, siding installation, roofing, dry rot repair and full exterior renovation services throughout the Portland metro area and Southwest Washington.
Portland Metro — Oregon
Southwest Washington
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Window questions from Seaside, OR
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The address sets the rating
A Seaside estimate from VResh names the exposure it designed to and the design pressure for every opening, corner, and middle alike, and the band is read from the address before anyone measures. Call or text (503) 272-6436.