Cable Railing
Cable railing is the view-deck guard — 316 stainless marine-grade cable strung horizontally between posts at 3-inch on-center spacing, tensioned tight enough that the 4-inch sphere rule passes at every opening. The cleanest sight-line of any guard system after frameless glass, and the right pick for Seattle homes with a Lake Washington view, a Puget Sound view, a Cascade view, or a downtown skyline view where the entire reason the deck exists is the view from it. Posts in powder-coated aluminum, 316 stainless, powder-coated steel, or wood with through-post tensioner hardware. Vendors we install regularly — Atlantis Rail, Feeney CableRail, Ultra-tec. Every install meets IRC R312 — 36-inch minimum guard height (42 inches in jurisdictions like Bellevue where the deck is more than 30 inches above grade), the 200-pound concentrated load at the top rail, and the 4-inch sphere rule maintained by cable tension and spacing. Cables creep under load and the deck framing seasons — both pull tension out of the run over the first two to three years. We include a free year-one re-tension visit and walk you through the annual inspection schedule after that. From $4,500 for a basic 25-linear-foot aluminum-post system to $12,000 for a long view run on powder-coated steel posts with cedar top rail.
Service
What Cable Railing Covers
Cable railing is the view-deck guard — the system every architect and every view-property owner asks about when frameless glass is over-budget. 316 marine-grade stainless cable, run horizontally between posts at 3-inch on-center spacing, tensioned by a swaged stud fitting on one end and an adjustable tensioner on the other. The cable infill passes the 4-inch sphere rule by tension and spacing rather than by a physical barrier — done right it is just as code-compliant as any baluster system, and visually it disappears. Done wrong (under-tensioned, oversized spacing, the lower-grade 304 stainless that pits in salt air, post connections without through-bolts and blocking) it sags within months and fails the sphere rule by year two.
316 Marine-Grade Stainless — Non-Negotiable in the PNW
Cable comes in three common stainless grades — 304, 316, and 316 marine — and only 316 belongs on a Pacific Northwest deck. 304 will surface-rust within 18 months under the salt air on a view property and the year-round rain everywhere else. 316 is the alloy that holds up — added molybdenum content gives the corrosion resistance the climate requires. Cable diameter is 1/8-inch or 3/16-inch depending on the system and the post spacing; both diameters from a 7x7 or 7x19 stranded construction so the cable lays flat and tensions cleanly without kinks.
Post Material — Aluminum, Stainless, Powder-Coated Steel, Wood
Posts carry the load and anchor the cable tension — they have to be sized and connected for both. Powder-coated aluminum is the lightest and cheapest, comes in standard black or bronze, hides any minor rust at the through-bolt heads. 316 stainless posts are the highest-end, the most expensive, and the lowest-maintenance — same alloy as the cable, no powder coat to scratch or peel. Powder-coated steel posts are the sweet-spot pick for many view decks — stronger than aluminum (longer cable runs without intermediate posts), powder-coat finish in any color, less cost than stainless. Wood posts work with through-post tensioner hardware — common in Pacific Northwest cedar and Douglas fir installs where the wood-on-wood aesthetic matters.
Cable Spacing + 4-Inch Sphere Rule
Spacing for IRC R312 — typically 3 inches on-center for 1/8-inch cable, or 3.25 inches for 3/16-inch cable. The cable tension is what holds the spacing; an under-tensioned cable sags and the bottom cables drift to 4-plus inches on the sphere check. Atlantis, Feeney, and Ultra-tec each publish a tension table for their hardware (typically 250 to 350 pounds of tension per cable) — we tension to spec with a tension meter and document the values on closeout.
Annual Re-Tension Schedule — First Three Years
Cables creep under load (stainless cable has a known creep characteristic) and the deck framing seasons (the wood shrinks and settles as it ages); both pull tension out of the cable run. Every cable system we install gets a free re-tension visit at the 12-month mark — we walk the run with the tension meter, re-tighten any cable that has fallen below spec, walk the 4-inch sphere check. Year two and year three the system stabilizes and the re-tension is a once-a-year homeowner item (we walk through the process at year-one and demo the tools). After year three the cable holds tension for 2 to 3 years between adjustments.
How the Cable Railing Install Works
Six sequential phases from system selection to year-one re-tension — the actual working sequence we run on every cable railing install, including the through-bolted post connections, the tension-to-spec verification, and the year-one re-tension visit included with every install.
System Selection (Vendor + Post Material + Cable Diameter)
Estimate visit walks through the three vendors (Atlantis Rail, Feeney CableRail, Ultra-tec), the post material (aluminum, 316 stainless, powder-coated steel, wood with tensioner hardware), the cable diameter (1/8-inch standard, 3/16-inch for longer spans or premium aesthetic), and the top rail option (continuous metal top rail, wood top rail, or no top rail with capped posts). Hardware order lead time is 1 to 3 weeks from the fabricator; ordered at contract signing.
Demo + Rim Joist Blocking Check (Day 1)
Old railing demoed and hauled. Inside-the-rim blocking checked at every new post location — if blocking is absent (common on decks built before 2010), solid blocking added (a framing piece the same depth as the joist, full-width between the joists, glued and screwed) so the post through-bolt has wood to clamp into. Priced at $125 per post on the quote. Cable systems put more tension load on the corner posts than baluster systems — blocking is non-negotiable.
Post Setting + Through-Bolt (Day 1-2)
Posts plumbed and through-bolted with hot-dip-galvanized or stainless 1/2-inch carriage bolts and washers — never lag-screwed into end-grain (lag connections pull out under cable tension over years). Corner and end posts get extra blocking and extra fasteners (the corner posts carry the highest tension load). Intermediate posts spaced per the vendor spec (typically 4 to 5 feet apart for 1/8-inch cable). Post heights set to the AHJ requirement (36 inches or 42 inches).
Top Rail Install (Day 2)
Continuous top rail in matching material (metal top rail from the vendor or a wood top rail in cedar, mahogany, or fir at the homeowner's choice) cut, mitered at corners, fastened to the posts. The top rail is structural — it ties the posts together and resists the inward pull of the cable tension. End and corner posts get caps in matching material.
Cable Stringing + Tension to Spec (Day 2-3)
Cables run from end post to end post (or through intermediate posts at the vendor-specified intervals), tensioned with the swaged stud fitting on one end and the adjustable tensioner on the other. Each cable tensioned to the vendor spec (250 to 350 pounds depending on diameter and run length) using a digital tension meter — values documented and texted to the homeowner. The 4-inch sphere check walked at the end of the run, any cable that needs adjustment re-tensioned to pass.
Year-One Re-Tension Visit (Month 12 — Included)
Cable creep and framing seasoning pull tension out of the run during year one. We schedule a free re-tension visit at the 12-month mark — we walk the run with the tension meter, re-tighten any cable below spec, walk the 4-inch sphere check, and document the values. Year two and year three the homeowner re-tensions (we demo the tools at year-one); after year three the cable holds tension for 2 to 3 years between adjustments.
Cable Railing Pricing
Final pricing depends on the post material (aluminum is lowest, steel is mid, stainless is highest), the cable diameter (1/8-inch standard, 3/16-inch premium), the top rail option (no top rail, metal top rail, wood top rail), any stair runs, and any longer runs requiring intermediate posts. Year-one re-tension visit included on every system. Request a free in-home estimate for an accurate quote against your actual deck and view-line.
Tell us the deck size, the view-line, and the post material you want — we will quote the cable system including the year-one re-tension visit.
Why Seattle Homeowners Book Handis for Cable Railings
Cable railing only does the view-line work if it stays in tension. The system that landed on a view deck in 2019 at 300 pounds per cable and has not been touched since is now at 180 pounds per cable, the bottom cables sag below 4-inch sphere spec, and the deck is technically out of code compliance. The two failure modes are under-tensioning at install (the installer who ran the cables hand-tight without a meter) and skipped re-tensioning (the homeowner who treated it as set-and-forget after install day). Handis tensions to vendor spec with a digital meter and documents the values on every cable. Year-one re-tension is included on every install — we come back at the 12-month mark, walk the run with the tension meter, and re-tighten anything below spec. Year-two and year-three are a once-a-year homeowner item we demo for you. After year three the cable stabilizes and the schedule drops to every 2 to 3 years. Honest about the maintenance up front; the system works for 20 years if the schedule is kept.
316 marine-grade stainless cable — non-negotiable on PNW decks
Every cable system we install is 316 marine-grade stainless. The lower-cost 304 grade pits and surface-rusts within 18 months on a view property with salt air, and the cable rusts in the swaged fittings (the worst place for it — invisible until the cable fails). We will not install 304 even when the homeowner asks for it to save money — the system that costs $200 less to install costs $4,500 to replace in year three. 316 is the right material; we name the alloy on the quote.
Through-bolted posts with rim-joist blocking — cable tension is the load
Cable systems carry the cable tension as a sustained load on the corner and end posts (not just the 200-pound code load on the top rail). A 25-linear-foot run with eight cables tensioned at 300 pounds each puts 2,400 pounds of pull on each corner post — every fastener and every bit of blocking matters. We through-bolt every post with 1/2-inch carriage bolts and washers into solid rim-joist blocking. End and corner posts get extra fasteners and extra blocking. The connection is what carries the sustained tension — the most invisible and the most load-bearing part of the install.
Tension to spec with a digital meter — values documented per cable
Atlantis, Feeney, and Ultra-tec each publish a tension table for their hardware (typically 250 to 350 pounds depending on cable diameter and run length). We tension to spec with a digital cable tension meter (Loos PT-3 or Atlantis-supplied tool), document the value on each cable, and text the homeowner the tension log at closeout. The hand-tight installer who eyeballs the tension delivers an under-tensioned system that fails the sphere rule in year two. We measure.
Year-one re-tension included — annual schedule walked at hand-off
Cable creep is a real material property — stainless cable elongates slightly under sustained load and the deck framing seasons (shrinks as it dries) in the first two to three years. Both pull tension out of the cable run. Year-one re-tension visit is included on every install at no charge. We come back at the 12-month mark, walk the run with the tension meter, re-tighten any cable below spec, walk the 4-inch sphere check, document the new values. Year-two and year-three the homeowner re-tensions (we demo the tools at the year-one visit and leave the hex driver kit). After year three the cable stabilizes and the schedule drops to every 2 to 3 years.
Insured, background-checked, 30-day workmanship + 2-year structural warranty + manufacturer warranty
Every Handis carpenter carries general liability and workers' compensation insurance and has cleared a background screening. The 30-day workmanship guarantee covers caulk joints, post alignment, and any cosmetic punch-list item. The 2-year structural warranty covers the post connections, the through-bolt schedule, the cable tensioner hardware, and the maintained tension — if a post loosens, a tensioner slips, or a cable fails inside 2 years from our install, we come back and fix at no charge. The vendor warranties on the hardware (typically 10 years on Atlantis Rail, Feeney, and Ultra-tec tensioners) and the cable itself pass through to the homeowner at install — we hand over the warranty paperwork at closeout.
Estimate
Tell us the deck size and the view-line you want to preserve, the post material you are leaning toward (aluminum, stainless, powder-coated steel, wood with tensioner hardware), the cable diameter preference (1/8-inch standard, 3/16-inch premium), the top rail option (no top rail, metal, wood), any stair runs, and the deck height above grade. We send back a clear estimate with the year-one re-tension visit included and a project timeline.
Customer Reviews
Cable railing install reviews from verified Seattle-area Handis customers across the three major vendors and the four post materials.
316 stainless cable railing on the back deck of a 2008 West Seattle home with a Sound view. Handis installed a powder-coated steel post system from Atlantis Rail with a cedar top rail. The tension log at closeout showed every cable at 290 to 310 pounds. Year-one re-tension visit came in right on schedule and a couple of cables had dropped to 240 — they re-tensioned everything and walked us through doing it ourselves in year two. View-line is perfect and the cables disappear when you sit on the deck.
Feeney CableRail on the front deck of our Capitol Hill home facing the city skyline. Wanted the cleanest possible sight-line — went with 316 stainless posts (no powder coat) for the lowest-maintenance install. Two and a half working days. The tensioning visit at year one tightened a few cables and they showed me the tension meter and how to use the hex driver. Three years in and the view is as clean as install day.
Ultra-tec cable system with through-post tensioner hardware on a cedar post railing on a 1976 Bellevue home overlooking Lake Sammamish. Wanted the wood-on-wood look with cable infill — Handis sourced the Ultra-tec hardware with the cedar posts already drilled at the supplier and ran the install in three days. Post connections through-bolted with extra blocking at the corners (the tension load is significant). Beautiful finished result.
Long view deck in Magnolia overlooking Elliott Bay — 65 linear feet of cable railing on powder-coated steel posts (we needed the strength for the long run without intermediate post density). Handis ran intermediate posts at the Atlantis spec for a 1/8-inch cable, tensioned every run with a meter, and documented the tension log. Three working days. The tension log at year-one re-tension showed mostly stable cables with only two needing adjustment.
Replaced an old wood baluster railing on the back deck of a 1990s Mercer Island home with a clean aluminum-post cable system. Budget-conscious choice (aluminum posts instead of steel or stainless) and the result still looks great — we wanted the view of Lake Washington back. Two working days. They warned us aluminum posts can pit eventually if scratched by something hard (we have not seen any issues two years in). Solid system at a fair price.
Frequently Asked Questions
Common questions about Handis cable railing installs — pricing, vendor choice, tension schedule, code compliance, and what to expect.