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Winston-Salem Crawlspace Repair Winston-Salem · North Carolina
Winston-Salem · Forsyth County · NC

The Best Crawlspace Repair in Winston-Salem

Moravian brick in Old Salem, Queen Anne granite in West End, 1920s pier in Ardmore, block ranch in Sherwood Forest, builder-grade crawls in Clemmons and Bermuda Run — one Forsyth County crew that reads the Muddy Creek watershed and the HRC standards before it quotes the work.

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A licensed local crew — usually out in 24 to 72 hours. Written scope, fixed price, no pressure.

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Who we are

A Forsyth County crew that knows the difference between lime mortar and portland.

Twin City work from Bethabara to Bermuda Run — the crawls under Winston-Salem sit on 260 years of foundations and every decade left its own failure mode.

I work Forsyth County full-time — Old Salem and Bethabara on one end, Kinderton Village and Kernersville on the other, and every housing era in between. That range matters because in this county the decade actually tells you what is under the house. A 1780s Moravian sill on hand-laid stone in lime mortar behaves nothing like a 1918 Ardmore bungalow on brick pier, and neither one behaves like a 1997 Clemmons block perimeter with shredded builder poly. I read the foundation before I write a scope.

The terrain here is the other half of the story. Winston-Salem sits around 900 to 1,000 ft, and Forsyth County drops about 440 ft between the Stokes line and the Yadkin River bend at the southwest corner. That means genuinely hilly lots — a West End Queen Anne on Fourth Street or a Buena Vista Georgian off Reynolda Rd will have one foundation wall buried five feet in Cecil clay and the opposite wall daylighting into the yard. Differential moisture load, differential settlement, and a crawl that is half root cellar and half open air. That is the actual problem.

Permits and historic review are Forsyth-specific and I file them myself. Winston-Salem/Forsyth County Inspections at 100 E First Street covers the whole county except Kernersville and King, which run their own desks — Bermuda Run and Advance route through Davie County, Wallburg through Davidson, Germanton and Danbury through Stokes. If the house is in Old Salem, Bethabara, or the West End Historic Overlay, or if it is one of the roughly 146 Local Historic Landmarks scattered across the county, we go through a Certificate of Appropriateness at the Historic Resources Commission before a single fastener goes in a historic wall. National Register listing — Ardmore, Washington Park, Reynolda, Waughtown-Belview — is advisory only, and I tell those homeowners the truth about that.

What we do

Every service under the house.

One licensed crew, one number to call. Pick a service to see the specs, materials, and how we quote it.

01

Crawlspace Encapsulation

Full encapsulation on Forsyth County houses — 20-mil reinforced liner (Americover, Viper CS, or YellowGuard) mechanically fastened up the walls, taped seams with Polyken 337, sealed vents, and a dehumidifier sized on grains per pound. In West End and Old Salem the condensate discharge and any exterior stub are placed on rear portions and screened per Accessory Features Standard 1. On a Reynolda or Buena Vista estate-era house with a partial basement under the main block, we encapsulate the wing and sunroom crawls to match.

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02

Concrete Lifting & Leveling

Sunken driveway aprons, tripping walk edges, tilted patio slabs, and garage floors settled off block perimeter foundations across Forsyth County — HMI TerraThane 24024 or PolyLevel PL-400 injected through 5/8 in ports, cures in 15 minutes, drivable same day. On Cecil and Pacolet clay we plan the lift for the shrink-swell cycle so a wet spring does not undo an August fix. In West End and Old Salem, exterior slab work near a historic wall is a COA conversation before a hardware conversation.

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03

Crawlspace Repair

Diagnose the actual failure mode by era — Moravian lime-mortar stone, Victorian granite pier, 1920s Ardmore brick pier and infill, postwar Sherwood Forest block on Cecil clay, 1990s Clemmons builder poly, 2000s Kinderton Village partial encap that quit at year eight. Water management first (drainage or sump on any house sitting near the buried Peters Creek or Silas Creek culvert), then structural repair (sistered joists, Tiger SmartJack, Grip-Tite adjustable posts), then liner and dehumidifier. Fixed quote, W-2 crew.

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04

Vapor Barrier Installation

20-mil reinforced polyethylene — not builder 6-mil — mechanically fastened with termination bar, wrapped around every pier, seams overlapped 12 in and taped with Polyken 337 or Nashua 357 double-sided PSA. On a Moravian foundation with lime mortar we hand-fit the liner around the original masonry with no fasteners into the historic wall, per Old Salem Standards. On a Bermuda Run or Kinderton crawl we pull the failed builder poly first and re-terminate to the block cleanly.

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05

Crawlspace Sump Pump

Interior perimeter drain tile to a sealed sump basin at the low point, Zoeller M53 primary with a Wayne WSS30V battery backup, discharge line routed 10 or more feet from the foundation to daylight — with pop-up emitter or splash block. On houses near the buried Peters Creek and Silas Creek culverts in Ardmore, West End, and the south side, this is the piece that actually solves the perched water table. On rural Forsyth, Stokes, Davie, Davidson, or Yadkin septic parcels, discharge routes around the drainfield, always.

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06

Crawlspace Dehumidifier

Aprilaire E070/E080/E100, Santa Fe Compact 70/Ultra98/Advance100, or AlorAir Sentinel HDi90/HDi100 — sized on cubic footage and grains per pound, not by guess. Suspended from joists with vibration isolators, plumbed to daylight or the sump (no gravity-fed pump-in-a-bucket), dedicated 120V circuit, humidistat set to 55 percent. On the Wake Forest Baptist and Wake Forest University crowd in Buena Vista, Ardmore, and Reynolda I hand over the psychrometric log with the walkthrough.

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07

Crawlspace Mold Remediation

Antimicrobial treatment and HEPA vacuum on joists and subfloor, contained work area with negative-air filtration, removal and disposal of mold-damaged insulation and any old vapor barrier, then the actual fix — the moisture source. On a Waughtown or Sunnyside-Central Terrace mill house with a low crawl and no continuous perimeter, that is often a full rework, not a touch-up. Cosmetic mold cleanup without addressing the RH is why prior remediation came back inside a year.

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08

Structural Support & Floor Jacks

Tiger Foundation SmartJack and Grip-Tite adjustable steel posts on new concrete footings sized for the load — never resting on dirt or pavers. Sister rotted joists with pressure-treated lumber and Simpson connectors, replace failing girders where they have given out. On a shrink-swell Cecil clay lot we slow-lift over multiple visits to avoid cracking drywall above load-bearing walls. On a West End Queen Anne or an Old Salem Moravian, any fastening into a historic wall is a COA conversation before a hardware conversation.

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Signs of trouble

What a failing Twin City crawlspace actually looks like — from Old Salem lime mortar to Kinderton block.

Forsyth County houses do not fail like generic Piedmont houses. The Muddy Creek watershed, the buried Peters Creek and Silas Creek culverts, and 440 ft of relief between the Stokes line and the Yadkin bend mean the tells here are era-specific and street-specific. If you see any of these, the crawl is telling you something.

Efflorescence and lime-mortar washout on a hand-laid stone or half-timber foundation in Old Salem, Bethabara, or Bethania — Moravian-era masonry pre-dates portland cement, and any prior repointing with modern mortar is spalling the original brick face; this is a COA-first repair through the Historic Resources Commission, not a hardware-store fix.

West End Queen Anne or Colonial Revival on a terraced lot where the uphill foundation wall is soaked and the downhill wall daylights into the yard — granite retaining walls tied into the house foundation trap Cecil clay against soft historic brick pier, and West End Masonry Standard 6 forbids parging or coating any surface that was not historically covered.

Ardmore or Washington Park bungalow near the buried Peters Creek or Silas Creek culvert with a stubborn perched water table that gutter work never fixes — the 20th-century parkway construction paved over these Muddy Creek tributaries, and homes sitting over the culvert line stay wet even in a dry August (Salem Creek runs open with a greenway alongside it, so it is not the culprit).

Buena Vista, Reynolda, or West Highlands estate-era house with a partial basement under the main block and tall crawls under wings and sunrooms — hand-cut stone foundations, slate roofs, and undersized 1920s downspout runs push water straight to the crawl on the low elevation side, and Reynolda's postwar faculty-house infill has a different failure mode than the 1917 estate core.

Sherwood Forest, Konnoak Hills, or Peace Haven ranch built between 1945 and 1970 on brick veneer over block, 18 to 26 in of clearance, with foil-faced fiberglass fallen out of the joist bays and a crawl RH stuck in the mid-80s from May through September — Piedmont dew points in the low-60s make vented crawls of this era impossible to dry.

Country Club Rd or Robinhood Rd home on Cecil, Pacolet, or Madison clay showing seasonal foundation movement — the North Carolina state soil is shrink-swell, expanding wet and contracting dry, and a wet spring into a dry August can pull piers off their footings and open hairline drywall cracks above load-bearing walls.

Local Historic Landmark parcel anywhere in Forsyth County — Winston-Salem, Kernersville, Bethania, Rural Hall, Pfafftown, Walkertown, Clemmons, or Lewisville — where a prior contractor did foundation work without a Certificate of Appropriateness; roughly 146 LHLs carry the COA obligation regardless of district, and after-the-fact applications go to the full HRC at a public hearing (staff cannot approve them).

Bermuda Run or Advance house in the Yadkin River bend at 660 ft elevation — the lowest ground in the service area — with a builder partial encapsulation that quit between year five and year ten; Davie County permits it (Forsyth has no authority there), and the 1970s golf-club stock on block perimeter fails differently than the 2000s Kinderton Village 36 to 42 in crawls with shredded builder poly.

How we quote

Four steps from first call to fixed price — and how the paperwork actually works in this county.

Forsyth County has a real permit desk and a real historic review board. I file the paperwork myself so nothing bounces at inspection or shows up on a resale COA search.

Intake and paperwork check

First call I pull the parcel and check three things: which permit desk it belongs to (Winston-Salem/Forsyth County Inspections at 100 E First St for most of the county, Town of Kernersville Development Services for Kernersville, City of King for King, Davie County for Bermuda Run and Advance, Davidson County for Wallburg, Stokes County for Germanton and Danbury), whether it sits inside Old Salem, Bethabara, or the West End Historic Overlay, and whether the address is on the Local Historic Landmark list. Applications file through GeoCivix. If it is an LHL or a locally zoned district property, the Historic Resources Commission meets the first Wednesday of the month at 4 p.m. on the 5th floor of the Bryce A. Stuart Building — generally no July meeting.

On-site inspection

I show up with a moisture meter, a psychrometer, and a laser level. Baseline the crawl RH, joist moisture readings, standing water and grade check, insulation condition, and every foundation type in the house (Moravian lime-mortar stone, granite pier and infill, block perimeter, poured — most Winston-Salem houses have at least two). I photograph everything for the scope document and for the COA application if we need one. If the house is on Cecil or Pacolet clay I read the foundation for shrink-swell movement, not just moisture.

Fixed quote with COA plan

Written scope, fixed price, no add-ons after the fact. If the house is in West End I write the scope to West End Masonry Standards 3 and 6 (repair only the deteriorated portion, match in kind, no mortar stronger than the original, no coatings on surfaces not previously covered) and Accessory Features Structural and Mechanical Systems Standard 1 (mechanical equipment, exposed exterior pipes, and dehumidifier condensate lines placed on rear portions and screened from view). Old Salem gets the same treatment against its own standards. Minor Work is staff-issued; Major Work goes to the full Commission.

W-2 crews, licensed and insured

My guys are W-2, not day-labor subs. NC Residential Code 2018 (adopted 2019), Section N1102.2.11 for conditioned crawlspaces, Appendix F for radon-ready where applicable. We register the manufacturer warranty on the dehumidifier in your name (Aprilaire, Santa Fe, or AlorAir), hand you the psychrometric log, and — on a historic property — put a copy of the approved COA and the final inspection card in the folder. Forsyth County resale inspectors ask for that paperwork. Keep it.

Recent work

Three Forsyth County crawls, three different centuries of foundation.

Old Salem to Kinderton Village in the same service radius. Same crew, different rulebook for each house.

1908 Queen Anne on West Fourth — granite wall, no coating allowed
West End Historic Overlay, Winston-Salem

1908 Queen Anne on West Fourth — granite wall, no coating allowed

Uphill foundation was retaining wet Cecil clay against soft historic brick pier; downhill wall daylighted into the terraced yard. Owners had been quoted a cementitious parge — that is barred under West End Masonry Standard 6, no coatings on masonry not previously covered. Filed a Minor Work COA through GeoCivix, kept the exterior untouched, did interior-side 20-mil reinforced liner, drainage matting behind a lime-mortar repoint (Standard 3, no mortar stronger than the original), and stubbed the Aprilaire E080 condensate to a rear-yard discharge screened from Fourth Street per Accessory Features Standard 1.

1922 Craftsman bungalow off Hawthorne Rd — Peters Creek culvert next door
Ardmore, Winston-Salem

1922 Craftsman bungalow off Hawthorne Rd — Peters Creek culvert next door

Classic Ardmore era, 22 in clearance, brick pier plus infill on shallow footings that were never sized for a 21st-century humid August. House sits over the buried Peters Creek culvert, so the perched water table stayed high no matter how much gutter work the last guy did. Ardmore is National Register only — I told the homeowner plainly there was no COA obligation. Full encapsulation with a Santa Fe Ultra98 sized on grains per pound at a 60/60 setpoint, Zoeller M53 with Wayne WSS30V battery backup, and a passive radon stub roughed in for Appendix F.

2006 Kinderton build in Davie County — partial encap that quit at year eight
Kinderton Village, Bermuda Run

2006 Kinderton build in Davie County — partial encap that quit at year eight

38 in crawl, builder liner tabbed to the block with cheap PSA that let go by 2014, undersized supply-air 'conditioning' feeding the crawl instead of an actual dehumidifier. Bermuda Run sits in the Yadkin bend — the lowest ground in the service area, real seasonal high water. Permitted through Davie County (Winston-Salem/Forsyth has no authority in the Bermuda Run town limits). Pulled the failed liner, re-terminated 20-mil Viper CS with Polyken 337, dropped in an AlorAir Sentinel HDi100, routed condensate and sump discharge away from the drainfield to a rear daylight point, and handed the owner the psychrometric log the Wake Forest Baptist crowd always asks for.

Areas served

Winston-Salem and everywhere in Winston-Salem and Forsyth County.

Free inspections wherever we can reach in a day. If your address is close enough that we'd have someone under your house before noon, we're coming.

Old SalemWest EndArdmoreBuena VistaReynoldaWashington ParkSunnyside & Central TerraceWaughtownKonnoak HillsSherwood ForestPeace Haven & Robinhood WestClemmonsLewisvilleKernersvilleWalkertownRural HallPfafftownKingBermuda Run & AdvanceWallburg and everywhere in Forsyth County
Zip codes

Every Winston-Salem zip we cover.

2710127103271042710627127271072704027012270232728427051270452702127006273732710527050270102700927052270192704227016270282729527292
Adjacent towns

We also serve these Winston-Salem and Forsyth County towns.

Clemmons, NCLewisville, NCKernersville, NCWalkertown, NCRural Hall, NCPfafftown, NCKing, NCBermuda Run & Advance, NCWallburg, NCWashington Park, NCWaughtown, NCWest End, NCDowntown Winston-Salem, NCOld Salem, NCArdmore, NCBuena Vista, NCKonnoak Hills, NCReynolda, NCSherwood Forest, NCPeace Haven, NC
Questions

What Winston-Salem homeowners ask before they book the inspection.

My house is in the West End Historic Overlay. Can you still encapsulate the crawl?

Yes, and I file the COA through GeoCivix before we start. Interior-side liner, drainage, and mechanical work almost always come through as Minor Work (staff-issued). The pieces that get scrutinized are anything exterior — dehumidifier condensate discharge, sump discharge, any exposed pipe or utility box — because West End Accessory Features Structural and Mechanical Systems Standard 1 requires those on rear portions and screened from view. I plan every exterior penetration for the rear yard from day one. Masonry work follows Standards 3 and 6: repair in kind, no mortar stronger than the original, and no coatings on surfaces that were not historically covered.

My house is in Ardmore or Reynolda — do I need historic approval?

No. Ardmore, Washington Park, Sunnyside-Central Terrace, Waughtown-Belview, Reynolda, and West Highlands are National Register only. National Register listing is advisory — it places no restriction on a private owner using private money, no COA, no design review. Only the local ordinance regulates, and locally the districts that carry binding review are Old Salem, Bethabara, and West End. Some individual houses inside Ardmore or Reynolda are Local Historic Landmarks, and those do carry the COA obligation regardless of district. I check the LHL list on the parcel before I quote.

The house sits over the old Peters Creek culvert. Can that be fixed?

It can be managed. Peters Creek and Silas Creek were culverted through Ardmore, West End, and the south side during 20th-century parkway construction, and homes sitting over or beside those culverts see a stubborn perched water table that no amount of gutter work fixes. The play is interior perimeter drain tile to a sealed sump basin, a primary pump with a battery backup, and a discharge line routed well away from the foundation to daylight. On a historic property in West End that discharge goes to the rear yard, screened, per the standards. Salem Creek and South Fork Muddy Creek run open and are not the same problem.

I have a 1780s Moravian house with lime-mortar foundation walls. Do you work on those?

Yes, and carefully. Lime mortar pre-dates portland cement — it moves with the wall, breathes moisture, and reacts badly to modern portland-heavy mixes, which spall the original brick face. Old Salem Standards prohibit applying waterproofing or water-repellent coatings to masonry except to solve a specific, identified problem, and prohibit paint, cement coating, stucco, artificial stone, or brick veneer on walls, foundations, and chimneys not covered historically. The scope on these houses is almost always interior-side moisture management, hand-mixed lime repointing where required, and mechanical equipment placed to be invisible from the public right-of-way.

My crawl RH sits at 85 percent all summer even with the vents open. Why?

Because open vents on a Piedmont Triad house make it worse, not better. Winston-Salem dew points sit in the low-to-mid 60s from May through September, and any surface in the crawl below that dew point condenses the moisture in the outside air you just invited under the house. Vented crawls of every pre-2000 era in this county — Moravian, Victorian, Ardmore Craftsman, Reynolda estate, Sherwood Forest ranch — hit the mid-80s and higher through August. The fix is seal the vents, install a 20-mil reinforced liner up the walls, and put in a properly sized dehumidifier plumbed to daylight or a sump. NC Residential Code Section N1102.2.11 covers the conditioned crawlspace assembly.

How do permits work if I am outside Winston-Salem city limits?

Depends on where. Winston-Salem/Forsyth County Inspections at 100 E First St covers most of the county — Clemmons, Lewisville, Walkertown, Rural Hall, Pfafftown, Tobaccoville, and Bethania all route through Forsyth. Kernersville runs its own permit desk at 134 E Mountain St and its own inspections. King has its own department at 110 W King St (and King is in Stokes County, not Forsyth — inside King city limits it is City of King, outside is Stokes County). Bermuda Run and Advance route through Davie County; Wallburg through Davidson County in Lexington; Germanton and Danbury through Stokes; Yadkinville and East Bend through Yadkin. On rural work the septic drainfield location drives sump and condensate routing, always.

Free On-Site Inspection

The inspection is free. The quote is fixed. The call is yours.

A Winston-Salem crawlspace tech comes out, spends about 45 minutes under the house with real instruments, and hands you a written scope with photos. No obligation to move forward.

Call (336) 221-7061 Book a Free Inspection
Call (336) 221-7061 Free Inspection