This Old House S47 E7: Boulder Retaining Walls, Door Staining 101, and Biltmore Village's Comeback

Biltmore Village: A Neighborhood's Recovery

Kevin opens this episode with a walk through historic Biltmore Village, meeting local architect Robert Griffin to hear about the neighborhood's history and future. Biltmore Village, originally built by George Vanderbilt in the 1890s as a planned community for estate workers (there's a parallel to our Swannanoa worker housing from Episode 1), took a beating from Helene. Seeing it start to come back is a reminder that this season's rebuilds are happening in a broader context — it's not just five houses, it's an entire region finding its feet.

Staining a Fiberglass Door

In East Asheville, Mauro Henrique visits Paula to replace the door damaged by flooding. But this isn't just a swap — Mauro walks Paula step-by-step through prepping and staining a fiberglass door to mimic the look of real wood. It's one of those segments where This Old House earns its reputation: teaching a homeowner a skill they can use forever.

The process:

1. Clean with denatured alcohol to remove any oils, dust, or residue that would prevent the stain from adhering
2. Apply the gel stain following the faux wood grain pattern molded into the fiberglass
3. Work in sections, maintaining a wet edge to avoid lap marks

Fiberglass doors are a compelling choice for humid, storm-prone climates like Western NC. Unlike wood doors, they won't swell, warp, or rot from moisture exposure. Unlike steel doors, they won't dent or rust. And when properly stained, they're genuinely hard to distinguish from real wood. The trade-off is that they don't have the same solid feel — close the door and you can tell it's hollow-core fiberglass vs. solid wood. But for a front door that needs to survive weather extremes? Fiberglass is the pragmatic choice.

Boulder Retaining Walls: Where Landscaping Meets Engineering

This is the standout segment of the episode. In North Asheville, Jenn meets landscape architect Jennifer Verprauskus from Barefoot Designs to build a terraced boulder retaining wall at Matt and Melinda's property. If you recall the Grove Park Inn's 10,000-pound boulders from Episode 5, this is the residential version — and it's equally impressive.

Why Boulders Instead of Block or Timber?

Boulder walls make particular sense in this context:

• Natural aesthetics: They look like they belong in the Western NC mountains, because the boulders are literally from the Western NC mountains
• Durability: Stone doesn't rot, rust, or degrade. A well-set boulder wall will outlast the house behind it
• Drainage: The gaps between boulders allow water to pass through rather than building up hydrostatic pressure behind the wall — a critical factor in a location that just experienced catastrophic flooding
• No mortar needed: Gravity and mass do the work. Each boulder is heavy enough to resist soil pressure on its own

The Build Process

Jennifer and Jenn's approach is methodical: install drainage first (gravel and perforated pipe behind and beneath the wall), then place each boulder with machinery, selecting the right size and shape for each position. This isn't random rock-stacking — it's engineering with natural materials. The base boulders are the largest, set partially into the ground for stability. Each successive course steps back slightly, creating a battered (angled) wall face that resists tipping.

The drainage detail is crucial and often skipped in DIY walls. Without proper drainage, water saturates the soil behind the wall, dramatically increasing the lateral pressure. A 4-foot retaining wall holding back saturated soil bears roughly twice the load of one holding back dry soil. Many retaining wall failures trace back to inadequate drainage.

Interior Door Installation: Noah's Method

In Swannanoa, Kevin works with project manager Noah to install an interior door, and Noah shares his solo technique for keeping the jamb plumb and square. For anyone who's ever wrestled a prehung door into an opening by themselves, Noah's methodical approach — shimming from the hinge side, checking plumb at every step, and using the door itself as a reference for the reveal — is worth studying.

Kevin Helper Scorecard: 6 for 7. At this rate, Chris and Nick should put Kevin on the payroll. Or at least give him a hard hat with his name on it.

DIY Confidence Scale: Episode 7

• Fiberglass door staining: Beginner-Friendly. Low stakes (fiberglass is forgiving and you can strip and redo), satisfying results, and Mauro's technique is straightforward. Great first project.
• Boulder retaining wall: Hire a Professional. The boulders weigh thousands of pounds and require heavy machinery. The drainage design requires engineering knowledge. This isn't a weekend project — it's a specialty.
• Prehung interior door installation: Intermediate. Very achievable for a handy DIYer. Buy 10% more shims than you think you need and budget twice the time you expect. Your first one takes an hour; by your fifth, you're down to 20 minutes.

Additional Resources

• This Old House — S47 E7 Official Page
• Watch Episode 7 on PBS
• Barefoot Designs (landscape architecture)
• Historic Biltmore Village
• The Village Artist Market

Next time: Kevin discovers that Asheville's legendary food and beer scene is coming back (the mountain water that caused the flooding also makes great beer — irony noted), Tom teaches Cat how to measure for blinds, and our old chimney nemesis reaches its resolution in North Asheville. Place your bets now: rebuild or replace?