Crawl Space Waterproofing in Conway, South Carolina
19 crawl space companies serve Conway, South Carolina, with 2,110 customer reviews between them. Most full-service crawl space contractors handle waterproofing even when it isn't listed separately — confirm scope when comparing quotes. Local waterproofing typically runs $1,500–$5,000.
Get drainage and sump pump quotes from Conway pros who handle wet crawl spaces. For full service comparisons, see all crawl space contractors in Conway or encapsulation pros in Conway.
Conway Waterproofing Cost — Southeast — Heavy Seasonal Rain
Annual rainfall: 45–65 inches, concentrated in summer thunderstorms.
Cost varies with crawl space perimeter, sump pump capacity, discharge length, and exterior grading work. Get 2–3 quotes for an exact number.
Why Waterproofing Matters in Conway
In the Southeast, waterproofing is rarely just about keeping rain out — it is about managing groundwater that rises seasonally and storm bursts that overwhelm yard drainage in minutes. A sealed crawl space without drainage will flood from below during heavy storms because hydrostatic pressure pushes groundwater up through the substrate. Interior perimeter drains and a sump pump are the standard fix.
What a Conway Waterproofing System Should Include
- ✓Interior perimeter drain channel along footings (1.5–2 inch radius)
- ✓Sump pit and pump (1/3 to 1/2 HP, with battery backup)
- ✓Discharge line routed at least 10 feet from foundation
- ✓Vapor barrier (12–20 mil) over the drain system
- ✓Exterior French drain if the lot grades toward the home
- ✓Hurricane-rated check valve on discharge line
Interior vs Exterior Drainage in South Carolina
Recommendation
Interior perimeter drains are the primary line of defense in the Southeast. Exterior French drains help but are not sufficient alone — Southeast soil saturation defeats them during heavy storms.
Sump Pump Sizing
A 1/2 HP sump pump with battery backup is standard in this region. Power outages are common during the storms that create the most water — a battery backup is non-negotiable. Expect to replace pumps every 7–10 years.
What to Watch For in South Carolina
- !Reject any waterproofing quote that does not include a sump pump in the Southeast
- !Confirm the discharge line cannot back-flow during a flooded yard scenario (check valve required)
- !Pair with encapsulation — sealed crawl space + drainage is the long-term Southeast standard
Waterproofing Contractors in Conway
Cotton Global Disaster Solutions - Conway
2939 Hwy 65, Conway, SC 29526, USA
1 reviews
Crawl Space Ninja of Myrtle Beach
2875 US-378 UNIT 1C, Conway, SC 29527, USA
6 reviews
Green Home Solutions
3802 Hwy 17 S Unit C, North Myrtle Beach, SC 29582, USA
25 reviews
Waccamaw Concrete
5491 Buck Hill Rd Drive, Myrtle Beach, SC 29588, USA
506 reviews
HQ Solution LLC
526 Foxglove Ct, Myrtle Beach, SC 29579, USA
26 reviews
Carolina Foundation Solutions
6301 Cannons Campground Rd A, Cowpens, SC 29330, USA
14 reviews
MasterTech Environmental
3053 W Hwy 19, Conway, SC 29526, USA
76 reviews
Restoration 1 of Horry County
240 Industrial Way Unit A, Myrtle Beach, SC 29579, USA
201 reviews
Clean Sweep Enterprises, Inc.
11774 Frontage Rd, Murrells Inlet, SC 29576, USA
65 reviews
Royal Concrete Solutions
4064 J and S Countryside Rd, Conway, SC 29527, USA
22 reviews
Grand Strand Moisture Solutions
970 Knotty Branch Rd, Conway, SC 29527, USA
56 reviews
RR Masonry
463 Myrtle Ridge Dr unit 1, Conway, SC 29526, USA
21 reviews
SERVPRO of Georgetown and Horry Counties
418 Bradley Cir, Myrtle Beach, SC 29579, USA
146 reviews
Cantey Foundation Specialists
621 Rutledge St, Camden, SC 29020, USA
545 reviews
Cantey Foundation Specialists
4225 Piggly Wiggly Dr, North Charleston, SC 29405, USA
318 reviews
PuroClean of Myrtle Beach
1411 17th Ave S, Myrtle Beach, SC 29577, USA
26 reviews
CNT Foundations
2734 Beaver Run Blvd Suite B-152, Myrtle Beach, SC 29575, USA
8 reviews
Waterproofing FAQs — Conway, South Carolina
Which companies offer crawl space waterproofing in Conway?
Cotton Global Disaster Solutions - Conway (5.0★), Crawl Space Ninja of Myrtle Beach (5.0★), Green Home Solutions (5.0★) are the top-rated crawl space companies in Conway, and most full-service contractors handle waterproofing — ask for it specifically when requesting quotes.
How many crawl space contractors serve Conway?
19 crawl space companies are listed for Conway; Waccamaw Concrete is the highest-rated at 5.0★ (506 reviews). Pros in nearby Charleston and Myrtle Beach also cover the area.
How much does crawl space waterproofing cost in Conway, South Carolina?
Crawl space waterproofing in Conway, South Carolina typically costs $1,500–$5,000 for a complete interior drainage system with sump pump. Southeast — Heavy Seasonal Rain pricing reflects local labor rates and the specific drainage scope each climate demands.
Do I need an interior or exterior drainage system in Conway?
Interior perimeter drains are the primary line of defense in the Southeast. Exterior French drains help but are not sufficient alone — Southeast soil saturation defeats them during heavy storms.
What size sump pump do I need in Conway?
A 1/2 HP sump pump with battery backup is standard in this region. Power outages are common during the storms that create the most water — a battery backup is non-negotiable. Expect to replace pumps every 7–10 years.
Why is exterior grading important for waterproofing in South Carolina?
Verify a 6-inch fall over the first 10 feet from foundation. Many Southeast homes have settled grade that now slopes toward the foundation — re-grading before drainage installation prevents 30–50% of water issues.
When should I schedule waterproofing in Conway?
November through March — outside hurricane season and dry enough for excavation. Avoid May–October when storm bursts make crawl space access dangerous.
Expected ROI
Avoiding one major flood event ($8K–$25K in damage to floors, drywall, and HVAC) typically pays for the entire system within 2–5 years. Insurance: many Southeast carriers now offer 5–15% premium discounts for documented waterproofing systems.
Best Season to Schedule
November through March — outside hurricane season and dry enough for excavation. Avoid May–October when storm bursts make crawl space access dangerous.
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Waterproofing Guides
Southeast — Heavy Seasonal Rain
Annual rainfall: 45–65 inches, concentrated in summer thunderstorms