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Western Specialty Contractors

Western Specialty Contractors

Master Craftsmen in Building Envelope Repair

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Washington’s Master Craftsmen in Building Envelope Restoration

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About Us

The Seattle area office has served customers throughout Washington and Oregon since 1995.

Western Specialty Contractors helps you take the guesswork out of building envelope maintenance and repairs in a way that lets you provide more value to your clients.

Since the company was founded in 1915 as a small waterproofing contractor in St. Louis, MO, Western has stood by dedication to quality craftsmanship.

Family-owned, the company has evolved to become America’s largest specialty contractor in masonry, concrete, waterproofing and facades restoration.

Services

Sealant Replacement

Got leaks? Water intrusion is more than an inconvenience for property owners and tenants. Left unchecked, it can damage structural elements and shorten the useful life of buildings, parking garages, and plaza decks.

Masonry Restoration

The materials that give masonry structures their character and beauty are vulnerable to age, moisture, pollutants, building movement, and deferred maintenance.

Parking Garage Restoration

An ineffective maintenance routine on a parking structure can quickly lead to costly repairs and restorations that can be disruptive to tenants and cause unexpected costs and safety concerns.

Waterproofing & Coatings

From below grade waterproofing to deck coatings to roof coatings, any waterproofing system is only as effective as the caliber of installation.

Concrete Restoration

Concrete is economical and durable — the backbone of modern construction. But time, water, and weather take their toll and diminish its strength.

Historical Restoration

We can restore the exterior features regardless of composition or age without damaging either the building or its historical charm.

Microsoft Clean and Seal | Redmond, WA

December 2, 2025

From the tallest skyscrapers to the corner office and the downtown warehouse district, the stressors of sunlight, changing weather, water, building movement, and settlement can break down and deteriorate building facades, creating comfort, safety, and maintenance issues that can quickly add to the cost of property ownership. Early detection and repair of façade problem areas, such as cracking, efflorescence, spalling, control joint failure, and sealer or caulk failure, will help reduce the likelihood of unexpected costs and major repairs, while also maintaining the property’s overall value and aesthetic. Western Specialty Contractors’ Seattle Branch recently restored/waterproofed the facades of several buildings at a tech company campus in Redmond, WA, as part of the organization’s routine maintenance program. The Redmond campus spans 500 acres, just outside Seattle, and comprises 125 buildings and outdoor spaces, including offices, event and recreational areas, restaurants, and shops. As the tech company’s corporate headquarters, the campus encompasses…

Continue Reading Microsoft Clean and Seal | Redmond, WA

Sheraton Parking Garage | Seattle, WA

September 4, 2025

In the Fall of 2022, Western’s NYC Metro branch was hired as a subcontractor to Conti Civil to restore a handful of historic elements as part of the rehabilitation of the Harrison PATH Station in Harrison, New Jersey.

Continue Reading Sheraton Parking Garage | Seattle, WA

Where To Find Us

Office

Western Specialty Contractors
22416 66th Ave S
Kent, WA 98032

Parking Structure Inspection Guide

Maintaining multi-million-dollar parking garages can be a daunting task for building owners and their facility managers. An ineffective maintenance routine on a parking structure can quickly lead to costly repairs and restorations that can be disruptive to tenants and cause unexpected costs and safety concerns.

Fortunately, identifying and tracking problem areas within parking structures has just become easier with Western Specialty Contractors’ new online Visual Guide & Checklist for parking garage inspections.

Caulking & Sealants Cheat Sheet

Practically every building requires caulking and sealants to prevent water from reaching interior spaces.

Caulking and sealants are not only the most commonly used waterproofing materials, but they’re also the most incorrectly used. This quick cheat sheet will help you decode any jargon you encounter for caulking and sealants.

Contact us today about your next project

Whether you’d like us to take a look at minor leak issues, provide a proposal for full capital restoration projects, or give an educational presentation that will help you and your team make your exterior maintenance more cost effective, we’d love to connect with you.

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WESTERN SPECIALTY CONTRACTORS DOES NOT PROVIDE LICENSED DESIGN, ENGINEERING, OR ARCHITECTURAL SERVICES. WHEN APPROPRIATE, WESTERN CAN RECOMMEND A DESIGN PROFESSIONAL, OR WORK WITH ONE PROVIDED BY THE CLIENT.

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