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Should you restore original wood siding, or replace it with fibre cement?

Should you restore original wood siding, or replace it with fibre cement?

Restored vertical wood siding in a deep red-brown finish on a mid-century Palo Alto home
Case Study · Palo Alto, CA · Wood Siding Restoration

The owner of this mid-century Palo Alto home had custom-made wood siding that had weathered to silver-grey, and he wanted it restored rather than swapped for something modern. Lifetime Roofing cleaned it back, replaced only the boards that had failed, and refinished the wall — keeping the siding the house was designed with.

Restored vertical wood siding in a deep red-brown finish on a mid-century Palo Alto home

Should you restore original wood siding, or replace it with fibre cement?

Restore it when the boards are still sound and only the surface has gone, and replace when rot has gone through the wood itself. Most weathered siding looks far worse than it is: grey, split-looking grain is usually sun damage a few millimetres deep, not structural failure. On this Palo Alto home the vertical siding had been bleached silver-grey by decades of sun, but underneath it was sound, so Lifetime Roofing cleaned it back, replaced only the handful of boards that had gone past saving, and refinished the rest. A homeowner on Houzz asked exactly this after uncovering original redwood siding and being torn between sanding it back and tearing it off for fibre cement.

The Home & the Challenge

Custom siding, decades of sun, and an owner who did not want it changed

This is a mid-century house in Palo Alto clad in narrow vertical wood boards — not a profile you can order off a shelf, because it was custom made for the house. Decades of direct sun had bleached the exposed walls to a flat silver-grey, with the grain raised and splitting along the edges of the boards. Around the window openings the damage had gone further than the surface. The brief from the owner was unusually clear, and it set the whole job: restore it, do not change it.

Sun-bleached and water-stained vertical wood siding before restoration on a mid-century home in Palo Alto CA
Before: decades of sun had bleached the wall to silver-grey
Close-up of weathered grey siding boards with split and raised grain before restoration in Palo Alto CA
Before: raised, splitting grain across the boards
The Solution

Keep the wood, replace only what has actually failed

The default advice on siding this weathered is to tear it off and put up fibre cement. It is a reasonable product and it is close to maintenance-free, but on a house whose siding was made for it, replacement is a one-way door: the custom profile goes in a skip and nothing you buy afterwards brings it back. We assessed the wall board by board, and most of it was sound wood behind a ruined surface. So the plan was to clean back to good wood, cut out only the boards that had genuinely failed and match them to the existing profile, re-detail the window openings while they were accessible, and refinish the lot. If you are weighing the same decision, our exterior renovation page covers what we look at first.

The Process

Board by board, starting at the openings

Work started in August 2026. The openings came first, because that is where the real damage was: with boards off around a window, the wall cavity and insulation were exposed and the opening could be wrapped and detailed properly before anything went back over it. Doing this at restoration time is the whole argument for opening a wall up rather than painting over it.

Window opening with exposed insulation and house wrap during siding restoration in Palo Alto CA
Boards off at a window, with the opening ready to be re-detailed
Replacement siding board fitted beside a window frame during restoration in Palo Alto CA
A replacement board fitted to match the existing profile

Replacement boards were cut to match the existing profile and fitted individually, so the repaired sections read as part of the same wall rather than as patches. The rest of the siding was cleaned back to sound wood — the grey goes, the board stays — and the whole elevation was refinished together so the colour runs evenly across old boards and new.

The Results

Before vs. After

FeatureBeforeAfter
Siding surfaceBleached silver-grey, grain raised and splittingCleaned back to sound wood and refinished
Damaged boardsSeveral boards weathered past savingReplaced to match the existing profile
Window openingsExposed and no longer weather-tightRe-wrapped and re-detailed before the boards went back
Original characterAt risk of being lost to a modern productKept — same custom profile, same house
MaterialCustom-milled wood, decades oldThe same wood, still in place
Restored custom wood siding and window against a clear sky in Palo Alto CA
Close-up of restored siding showing the grain and fresh finish in Palo Alto CA
After: the grain back, and the colour even across the wall
Restored vertical siding running up to a window head in Palo Alto CA
After: restored siding running up to the window head
Why It Matters

Why this matters on a Peninsula mid-century house

Palo Alto, Los Altos and the rest of the Peninsula are full of mid-century houses whose character sits almost entirely in their exterior materials — narrow board siding, deep eaves, big glass. Replace the siding with a modern lookalike and the house still functions, but it stops being the house it was. That matters here in a way it does not everywhere, because these homes trade on exactly that character. The practical catch is sun: unshaded south and west walls weather several times faster than the rest, which is why a wall can look beyond saving on one elevation and be perfectly sound on another. We serve the whole area from Sunnyvale — see our Palo Alto page — and you can see more finished work on our roofing projects page.

“I would recommend Lifetime Roofing. We needed new gutters and resurfacing of our sunroom roof. Our project manager, Matt M, was professional, communicative, and thorough. From the initial quote to when the work was complete, he took care of us every step of the way.”— Winnie L., via Google

Questions

Wood siding questions we get asked

How do you tell whether wood siding can be restored or has to be replaced?

Press on it. Sound wood resists; wood that has actually failed gives, feels spongy, or lets a screwdriver sink in. Grey colour on its own means almost nothing — sun damage is usually only a few millimetres deep and comes off with cleaning. The places that genuinely fail first are the bottoms of boards, the ends where water sits, and anywhere around a window or door opening, which is exactly where we found the damage on this house.

What happens to the boards that are too far gone to save?

They come out and get replaced individually, matched to the existing profile so the wall still reads as one surface. That is the part that takes skill on a house like this one, where the siding was custom made and nothing off the shelf matches it. Where boards came off around the openings, we re-wrapped and re-detailed the opening before the new boards went back, because that is where water gets in.

How often does restored wood siding need refinishing?

Expect to refinish every few years rather than never — that is the honest trade-off against fibre cement, and it is the thing homeowners weighing the two decisions worry about most. What you get in return is the original material and the original look, which a replacement product can imitate but not reproduce. South and west walls weather fastest in the Bay Area and will always need attention before the shaded sides do.

Not sure whether your siding can be saved?

We will look at it and tell you honestly — including when replacement really is the better call. See more finished work on our roofing projects page.

About the Author

Gina K. writes about Bay Area roofing for Lifetime Roofing & Renovation, drawing on the team's 16+ years of experience roofing homes across Silicon Valley.

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