Crawl Space Waterproofing in Biloxi, Mississippi
2 of the 21 crawl space companies serving Biloxi, Mississippi specifically list waterproofing among their services, led by AFS Foundation & Waterproofing Specialists (5.0★, 43 reviews). Local waterproofing typically runs $1,400–$4,550.
Get drainage and sump pump quotes from Biloxi pros who handle wet crawl spaces. 2 local pros offer waterproofing services. For full service comparisons, see all crawl space contractors in Biloxi or encapsulation pros in Biloxi.
Biloxi 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 Biloxi
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 Biloxi 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 Mississippi
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 Mississippi
- !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 Biloxi
AFS Foundation & Waterproofing Specialists
1317 26th Ave Ste 101, Gulfport, MS 39501, USA
43 reviews
AFS Foundation & Waterproofing Specialists
3131 Hamilton Blvd, Theodore, AL 36582, USA
970 reviews
Clean Air Crew
7608 Park Ridge Dr, Biloxi, MS 39532, USA
60 reviews
Gulf Coast Foundations
36223 AL-59, Stapleton, AL 36578, USA
96 reviews
Ox Foundation Solutions
9180 Irvington Bayou La Batre Hwy, Irvington, AL 36544, USA
80 reviews
Restoration 1 of Gulf Coast
21355 US 49, Saucier, MS 39574, USA
425 reviews
Skaggs Restoration Systems
379 Tegarden Rd, Gulfport, MS 39507, USA
8 reviews
Homelyft Restoration
3200 B Ave, Gulfport, MS 39507, USA
45 reviews
EnviroTech Services, LLC
2815 19th Ave A, Gulfport, MS 39501, USA
60 reviews
Green Construction and Roofing
355 Belvedere Cir, Biloxi, MS 39531, USA
44 reviews
Mixon Foundation and Crawlspace Repair
6767 Kushla McLeod Rd, Eight Mile, AL 36613, USA
42 reviews
Pro Vision Construction LLC
13113 Cloverdale St, Ocean Springs, MS 39564, USA
3 reviews
MDH Foundation Repair
3537 Denny Ave # 337, Pascagoula, MS 39581, USA
4 reviews
911 Restoration of Mississippi Gulf Coast
14403 Seaway Rd, Gulfport, MS 39503, USA
52 reviews
MidSouth Crawlspace Solutions
2404 US 49, Florence, MS 39073, USA
831 reviews
Olshan Foundation Repair
5835 N Commerce Plaza Dr, Jackson, MS 39206, USA
364 reviews
Guarantee Restoration Services
13275 Seaway Rd, Gulfport, MS 39503, USA
43 reviews
Cornerstone Foundation Repair
448 Co Rd 855, Shannon, MS 38868, USA
15 reviews
PuroClean of Ocean Springs
3110 Government St, Ocean Springs, MS 39564, USA
37 reviews
Waterproofing FAQs — Biloxi, Mississippi
Which companies offer crawl space waterproofing in Biloxi?
AFS Foundation & Waterproofing Specialists (5.0★), AFS Foundation & Waterproofing Specialists (4.9★) list waterproofing in Biloxi. 2 of 21 local crawl space companies tag this service directly.
How many crawl space contractors serve Biloxi?
21 crawl space companies are listed for Biloxi; Restoration 1 of Gulf Coast is the highest-rated at 5.0★ (425 reviews). Pros in nearby New Orleans and Mobile also cover the area.
How much does crawl space waterproofing cost in Biloxi, Mississippi?
Crawl space waterproofing in Biloxi, Mississippi typically costs $1,400–$4,550 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 Biloxi?
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 Biloxi?
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 Mississippi?
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 Biloxi?
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