Best basement waterproofing pros near Seward, AK

Q: Should I pick a topical or a penetrating sealer for my project?

• <div><p>Topical sealers adhere to the surface of concrete to create a protective layer. In many cases, this is all you need for concrete that sees light to moderate traffic, such as your basement. Penetrating sealers, on the other hand, bond with the free lime in the top layer of concrete to form calcium silicate, which prevents liquid from passing through. This type of sealer protects the surface from water, oil, and gasoline spills.</p></div>

Q: What materials can stop a flood?

• <div><p>The most flood-resistant materials you can count on in a flood scenario are concrete, closed-cell insulation, foam insulation (also known as expandable foam), pressure-treated wood, marine-grade plywood, and ceramic tile. When a material is flood-resistant, it can withstand direct contact with floodwater for at least 72 hours without being significantly damaged. </p></div>

Q: Can water seep through cracks in the basement floor?

• <div><p>Yes, water and water vapor can seep through cracks in your basement floor, which means you should address all basement floor cracks, even if they don&rsquo;t indicate structural issues. Sealing settling cracks and shrinkage cracks is a good idea to keep water and moisture outside where it belongs. Doing so can improve your indoor air quality, reduce the risk of mold growth, make your home more comfortable, and help prevent pest infestation.</p></div>

Q: How do I keep water away from my crawl space?

• <div><p>Proper drainage is the only way to ensure that your crawl space stays dry. Depending on your property and the extent of your issue, you might need to consider a gutter system, a French drain, or sump pumps to avoid and handle water and moisture under your home. Dehumidifiers can also help to prevent moisture from accumulating if you have a high-humidity environment.</p></div>

Q: Does a basement need ventilation to reduce humidity?

• <div><p>Proper basement ventilation is very effective at reducing humidity. Without enough ventilation, your basement is prone to mold and moisture damage. Your basement should have as much natural ventilation via windows and doors as possible, and if your budget allows, you should also consider installing an ERV system to keep basement humidity levels at bay.</p></div>

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Top-Rated Basement waterproofing pros in Seward - Updated Nov 2026

911 Plumbing and Heating Services

4.6(

)

Basement Drainage Channels - Install

Serving Seward, AK and surrounding areas

In business since 2018

Free estimates

Emergency services offered

Serving Anchorage and the Mat-su valley. we service and install all plumbing and heating systems at a reasonable rate. Froze up? cold? no heat? water leaks? give us a call. WE DO NOT CHARGE FOR CALL OUTS OR AFTER HOURS FEES.

+11

Recommended by83%of homeowners

Basement Drainage Channels - Install

Serving Seward, AK and surrounding areas

In business since 2000

Free estimates

Emergency services offered

J&B Construction is a reliable General contractor with house and septic endorsement that provides quality service from Sterling, Alaska sense 2013.\n\nFor more information, visit our website, text, or give us a call at (907) 953-1555\n\nWe serve in Sterling, Soldotna, Kalifornsky, Kenai, Nikiski, Ridgeway, and the surrounding areas.\n\nSeptic System Service, Septic System Repair, Septic Tank Installation, Septic System Maintenance, Septic Tank Replacement, Septic line Cleaning via jet, Septic Installation, Septic Repair.\n\n***Please call Peninsula Pumping for your septic pumping needs at 907-262-5969 or (907) 395-0916 **\n\nFor more information visit our website: \njbconstructionak.com\n

excavation completed and starting footer system.

Back filling the fox block footing system after insulation placed at lower footer.

DBL Clean out at tank.
Preferred install method

+14

Recommended by100%of homeowners

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Victory Drain Cleaning

5.0(

)

Basement Drainage Channels - Install

Serving Seward, AK and surrounding areas

In business since 2016

Free estimates

Emergency services offered

Drain cleaning, septic tank pumping, rotor rootor, camera inspection and locate, jetting and hot jetting, steam thawing

Recommended by100%of homeowners

Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Seward, AK and surrounding areas

In business since 2005

Free estimates

Emergency services offered

We are committed to providing excellent customer service and professional work. We work to keep our overhead low to give the best prices to our customers. Check us out at equitybuildersak.com

Recommended by100%of homeowners

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Basement Waterproofing FAQs, answered by experts

Topical sealers adhere to the surface of concrete to create a protective layer. In many cases, this is all you need for concrete that sees light to moderate traffic, such as your basement. Penetrating sealers, on the other hand, bond with the free lime in the top layer of concrete to form calcium silicate, which prevents liquid from passing through. This type of sealer protects the surface from water, oil, and gasoline spills.

The most flood-resistant materials you can count on in a flood scenario are concrete, closed-cell insulation, foam insulation (also known as expandable foam), pressure-treated wood, marine-grade plywood, and ceramic tile. When a material is flood-resistant, it can withstand direct contact with floodwater for at least 72 hours without being significantly damaged.

Yes, water and water vapor can seep through cracks in your basement floor, which means you should address all basement floor cracks, even if they don’t indicate structural issues. Sealing settling cracks and shrinkage cracks is a good idea to keep water and moisture outside where it belongs. Doing so can improve your indoor air quality, reduce the risk of mold growth, make your home more comfortable, and help prevent pest infestation.

Proper drainage is the only way to ensure that your crawl space stays dry. Depending on your property and the extent of your issue, you might need to consider a gutter system, a French drain, or sump pumps to avoid and handle water and moisture under your home. Dehumidifiers can also help to prevent moisture from accumulating if you have a high-humidity environment.

Proper basement ventilation is very effective at reducing humidity. Without enough ventilation, your basement is prone to mold and moisture damage. Your basement should have as much natural ventilation via windows and doors as possible, and if your budget allows, you should also consider installing an ERV system to keep basement humidity levels at bay.

The Seward, AK homeowners’ guide to basement waterproofing services

From average costs to expert advice, get all the answers you need to get your job done.

See all articles

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•
Oct 16, 2026Oct 16, 2026
How Much Does Basement Waterproofing Cost? [2026 Data]
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How Much Does It Cost to Finish a Basement? [2026 Data]
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Oct 28, 2026Oct 28, 2026
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What Is Basement Waterproofing and How Does It Work?
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•
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How to Waterproof a Basement Like a Pro
Dealing with a damp basement? Follow these steps for DIY basement waterproofing to keep water and moisture out and boost your home’s energy efficiency.