Shoreline Siding Contractor — Mid-Century Homes, Innis Arden to Richmond Beach
Nearly half of Shoreline’s homes were built between 1940 and 1969. That means original hardboard, old cedar, and in some cases asbestos-cement siding that needs professional abatement before anything new goes on. From The Highlands’ Olmsted Brothers estates to Richmond Beach’s Puget Sound salt air, Paul knows what each neighborhood demands.
WA License #GPGENGC830KD 
Hardie Certified Installer 
5-Star Rated 
Mid-Century ExpertiseWhat Homeowners Say
Real reviews from our Google profile — unedited, from real projects.
“We recently had Paul with GP General repair a damaged corner protector and sidings. His estimate was reasonable, his availability was timely, and his job was excellent. Our home hadn’t been re-painted in a while and the paint had considerably faded, yet he was able to match the color perfectly. Now we know who to turn to when in need of another repair work.”
“GP General replaced LP siding on our garage. Paul was very thorough when he came out to do the estimate; he listened to my concerns and was able to work out solutions on the spot. His crew did a great job and were very courteous. They also were careful about cleaning up (I didn’t find any nails!). Really happy with the job and can recommend GP General.”
“I highly recommend GP General Corp for siding replacement. We recently had our wood siding replaced with James Hardie lap siding, and Paul and his team did an excellent job.”
Why Shoreline Homeowners Trust Us With Their Siding
You’ve probably gotten a few quotes for Shoreline siding contractor work already. You’ve heard the pitches. Here’s what makes us different — and why Shoreline homeowners don’t shop around the next time.
Recent GP projects in the Seattle area:
- Mercer Island Hardie reside with R-5 exterior insulation + Shou Sugi Ban accent →
- Magnolia vertical cedar rainscreen with exterior insulation →
- Bellevue modern new construction — white ColorPlus Hardie + metal coping →
“Will they catch the damage I can’t see?”
Most siding fails because of what’s behind it — rot, failed flashing, moisture you can’t see from the curb. With 15+ years walking North Seattle walls, we don’t guess. We probe, document, and re-engineer the wall assembly with drainable WRB, integrated flashings, and rainscreen ventilation built for Pacific Northwest weather.
Building Science First“I’m tired of high-pressure salespeople.”
No same-day discounts. No “this price is only good if you sign tonight.” We give you a free written assessment, a fixed-price contract, and the time to think it over. Most of our work in Shoreline comes from neighbor referrals — you don’t earn that doing it any other way.
No-Pressure Quotes“Will the warranty actually mean anything?”
A warranty is only as good as the install behind it. We’re a certified James Hardie installer, which means every panel goes up to manufacturer spec — gap, fastener, primer, every detail. That’s what keeps your 30-year Hardie product warranty enforceable if you ever need to use it.
Manufacturer-Backed“How do I know they won’t disappear after the check clears?”
Owner-run with 15+ years of North Seattle siding experience behind it. WA License #GPGENGC830KD backed by a $30,000 contractor bond — both verifiable any time at L&I. You’ll work with Paul start to finish. Same person quoting, walking the job, and answering the phone in year five if a question ever comes up.
Owner AccountableSiding Materials for Shoreline Homes
How We Do It
From permit to final walk-through, here’s exactly how a re-side in Shoreline runs with GP General Corp.
We remove the existing siding completely and inspect every square foot of sheathing before anything new goes up. On Shoreline homes we look specifically for original 60s T1-11 or Masonite siding with moisture damage at the bottom 12-18 inches where ground contact and sprinkler over-spray accelerated failure. Any compromised sheathing is replaced with new plywood or OSB. This is where we find the hidden problems — failed flashings, missing WRB, saturated sheathing — that caused the old siding to fail in the first place.
We install Benjamin Obdyke HydroGap Drainable as our standard WRB on every job. The integrated drainage gap keeps any moisture that gets behind the siding moving down and out instead of sitting against sheathing. This matters for Shoreline because of ~40 inches annually, with persistent Puget Sound winter marine humidity. Seams are lapped upper-over-lower (6” horizontal, 12” vertical), taped at joints, and integrated with window and door flanges using peel-and-stick flashing.
Head flashings above windows and doors. Kick-out flashings at every roof-to-wall intersection. Step flashings along rooflines. Proper flashing integration at every penetration — vents, hose bibs, electrical boxes, light fixtures. On Shoreline jobs we give extra attention to window head flashings that were omitted or reversed in period construction. Failed or missing flashings are the number one cause of siding failure we see, so we upgrade these details beyond code-minimum wherever the install justifies it.
HardiePlank installed to James Hardie’s Best Practices manual for the HZ10 climate variant — the PNW-required product (HZ5 voids the warranty here). 1¼” corrosion-resistant nails, blind-nailed, ½” gap at trim, matched to your original reveal. The post-war housing stock often has irregular framing we compensate for with WRB lap adjustments and supplemental furring where needed. ColorPlus pre-finish carries a 15-year color warranty; primed board gets field-painted within 180 days of install.
Every joint, butt-end, and penetration gets sealed with a high-grade elastomeric sealant rated for siding movement. Sustained winter humidity keeps joints wet longer than inland sites, so sealant selection and bead size matter — we spec for the widest cycling range each Shoreline elevation will see, not the average. Joints are tooled, not just applied, for full bond contact on both faces.
We walk the property with you at the end of the job to make sure everything looks great and you’re happy with the final result. It’s a 20-point walk: caulk lines, paint touchups, downspout reattachment, gutter reset, and site cleanup. Permit sign-off from the City of Shoreline (or Snohomish/Skagit County on unincorporated properties) is documented and handed off to you.
The Siding Issues We Fix Most in Shoreline
Some Shoreline homes from the 1950s–60s still have asbestos-cement (transite) siding. It looks like thick concrete panels. This material requires professional testing and certified abatement before removal. We coordinate this process — don’t let anyone tear it off without testing first.
Hardboard (Masonite) siding was the default on Shoreline’s mid-century homes. After 60+ years of PNW moisture, it’s swelling, crumbling, and delaminating. If you push on a board and it gives, that’s hardboard failure. Widespread across Ridgecrest, North City, and Briarcrest.
Western Shoreline faces Puget Sound. Richmond Beach and Innis Arden homes get direct marine exposure — salt spray, wind-driven rain, and corrosive conditions. Corrosion-resistant (316 stainless) fasteners and marine-grade sealants are required here, not optional.
What Shoreline Homeowners Say
“1957 rambler with original hardboard. Paul found moisture damage on three walls and asbestos-cement on the chimney chase. He coordinated the abatement, replaced the sheathing, and installed Hardie. Handled the whole thing.”
“We’re in Innis Arden and our HOA has strict view-protection covenants. Paul understood the tree height restrictions and worked around the landscaping requirements without triggering any covenant issues.”
“Richmond Beach salt air destroyed our cedar in 18 years. Paul recommended Hardie with stainless fasteners and marine-grade caulk. Three years in, not a single issue. Should have done it sooner.”
Read all reviews on Google — 5.0 star average
Shoreline Siding Questions
My Shoreline home might have asbestos siding. What do I do?
Do I need a permit in Shoreline?
Does the salt air in Richmond Beach really affect siding?
What does siding cost in Shoreline?
We’re in The Highlands. Do you work there?
How long does a typical Shoreline siding replacement take?
What is the best time of year for siding installation in Shoreline?
How much does it cost to re-side an Innis Arden mid-century rambler in Shoreline?
- James Hardie fiber cement (with HydroGap Drainable WRB + vented rainscreen) — $14–$20/sf installed
- Cedar or Lunawood thermally-modified wood — $20–$40/sf installed
- Hardie Artisan or standing-seam metal — $30–$55/sf installed
Shoreline Neighborhoods We Work In
One of Shoreline’s oldest areas, dating to 1872. Homes from 1940–1970. Direct Puget Sound exposure with salt spray, wind, and marine fog. 316 stainless fasteners are mandatory here. Beautiful neighborhood, punishing on siding.
Developed by Boeing founder Bill Boeing. Famous view-protection covenants with the 1981 Tree Height Amendment limiting heights. Construction near view corridors can trigger neighbor complaints. We work within these restrictions.
Exclusive gated community designed by Olmsted Brothers in 1907. 112 lots on 400 acres. 9-member Board of Trustees, 20+ professional staff. Buildings and Sites Committee reviews all exterior work. Dense old-growth canopy keeps homes in shade year-round.
The heart of Shoreline’s 1950s housing stock. Ramblers and split-levels with original hardboard or cedar. This is where we do the most work in Shoreline — straightforward re-sides on homes that are 60–70 years overdue.
Southern Shoreline neighborhoods. Mix of mid-century and some newer infill. Aurora Avenue (SR-99) corridor traffic creates vibration that can stress rigid siding joints on homes backing up to the highway.
Done Dealing With Contractors Who Don’t Call Back?
Paul picks up the phone. Shows up when he says he will. Gives you a straight answer — even if that answer saves you thousands by telling you a full replacement isn’t necessary.
GP General Corp · Shoreline Siding Contractor · WA License #GPGENGC830KD — Verify · James Hardie Certified Installer
Neighboring service areas
Edmonds (10 min north) · Seattle (15 min south) · Mukilteo (25 min north)