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Products & Services
Mold Services
Mold Remediation
Dust Mites Control
Mold Spores
Mold Removal And Cleanup
Dry Rot & Brown Rot

Basement Repair Services & Products
WaterGuard Interior System
DryTrak Drainage Channel
TrenchDrain Drain Grate
IceGuard Discharge Line
FlexiSpan Wall Crack Repair
Polyurethane Crack Sealing
WellDuct Window Drainage
BrightWall Waterproof Panels
ThermalDry Wall Barrier
Basement To Beautiful Pre-finishing Wall Insulation Panels
Drain Tile Installation
SuperSump Pump System
TripleSafe Pumping System
UltraSump Battery Back Up
Sanidry Dehumidifier

Crawl Space Repair Services & Products
CleanSpace Encapsulation Vapor Barriers And Liners
Turtl Access Hatch
EverLast Crawl Space Doors
Sanidry Csb Dehumidifier
SmartDrain Water Drainage
SilverGlo Wall Insulation
TerraBlock Floor Insulation
SmartSump Sump Pump
Crawl-o-Sphere Crawl Space Fan
WallCap Block Wall Sealer
SmartVent Flood Vents

Foundation Repair Services & Products
Push Pier Underpinning For Settlement, Foundation Leveling, Sinking Foundation Repair
Geo-lock Wall Anchors
Geo-lock Helical Anchors
PowerBrace Bowed Wall Repair
CarbonArmor Fiber Wall Repair
SmartJack Crawl Space Support
Slab Pier Repair
PolyLevel Concrete Lifting
EZ Post Deck Repair
Shotcrete Wall Restoration

Finishing / Remodeling
Everlast Wall Panels
Insulated Wall Panels
Premier And Linen Ceiling Tiles: No-sag Warranty
Thermal Dry Floor Tiles
Millcreek Faux Wood Flooring
Sunhouse Window Wells
Everlast Window Replacement
Rockwell Egress Window

Before and After Pictures from Denville
Denville, NJ Crawl Space Repair

Denville, NJ Crawl Space Repair

Before After
Denville, NJ Crawl Space Repair Denville, NJ Crawl Space Repair

This crawl space was damp in the summer and cold in the winter. Quality 1st Basement Systems installed CleanSpace crawl space vapor barrier in the crawl space to seal it off from the outside air. This crawl space is now clean and healthy!

Crawl Space Encapsulation in Denville, NJ

Crawl Space Encapsulation in Denville, NJ

Before After
Crawl Space Encapsulation in Denville, NJ Crawl Space Encapsulation in Denville, NJ

Denville, NJ homeowner had a wet dirt crawl space that needed to be cleaned out and encapsulated. The crawl space was filled of debris, water, mud and had a cold draft that was felt by people walking on the floor of the first level of the home. Quality 1st Basement Systems installed CleanSpace to seal off the crawl space from the outside environment. The liner has a vapor barrier built in to prevent water, moisture and mold. 

SmartJack Installation in Denville, NJ

SmartJack Installation in Denville, NJ

Before After
SmartJack Installation in Denville, NJ SmartJack Installation in Denville, NJ

This damp and musty Denville, NJ crawl space needed to be cleaned up. To do this, CleanSpace wall system was installed in the crawl space. CleanSpace is the perfect solution to a dry crawl space because it holds back water vapor and directs the water in the walls to the sump pump. Also, SilverGlo Crawl Space Wall Insulation was installed on the crawl space walls to keep the crawl space dry and warm. SilverGlo contains tiny particles that reflect heat and lower the material's conductivity. This system reflects heat back into the crawl space, making it a warmer environment, and the home warmer as well. The homeowner was worried about the crawl space sagging, so SmartJackks were installed. SmartJacks are an adjustable supplemental support system that can lift floor joists or beams, restoring them to their original positions.     

Company Awards
NJ Niz Best Places to Work 2021
Quality 1st Basement Systems is proud to have been named one of the 2021 Best Places to Work by NJ... [Read more]
NJ Biz Best Places To Work 2019
Quality 1st Basements is proud to have been named one of the 2019 Best Places to Work by NJ Biz!... [Read more]
2017 Angie's List Super Service Award
Quality 1st Basements Earns Esteemed 2017 Angie’s List Super Service Award Award reflects company’s consistently high level of customer service Cliffwood,... [Read more]
More Awards

Denville Basement Waterproofing & Foundation Repair Company

After dealing with foundation repair problems in my house for months, I decided to choose Quality 1st Basement Systems because...
Happy Customers Surrounding Denville, NJ
Work Requests

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Reviews From Denville
Testimonials From Denville
Wilver & his crew were wonderful to work with
Testimonial by Patricia K. from Denville, NJ
Justin came out for the annual preventive system check and was thorough, clear, professional, and on time.
Testimonial by Alisa W. from Denville, NJ

Denville's Basement, Crawl Space & Foundation Contractor

For over 25 years, Quality 1st Basement Systems has been the trusted basement & foundation company of Denville. Our high quality work and exclusive access to over 28 patented products set us apart in the home improvement industry. When working on basements, crawl spaces and foundations we are the safe choice for your home.

Basement Waterproofing & Crawl Space Repair

Basements and crawl spaces consistently have issues with water, mold and rot. To prevent these problems from occurring in the future we install a patented interior drainage system. Water and moisture that enters the basement is captured, controlled and safely removed via the basement drain before you ever notice it. The drainage system also works as part of crawl space encapsulation. 

We Provide:
  • Basement Waterproofing
  • Crawl Space Encapsulation
  • Exclusive, Patented Products
  • Humidity Control
  • Egress Windows
You Receive:
  • Permanently Dry Basement
  • Clean Protected Crawlspace
  • Protection against Mold
  • Improved Home Value
  • Less Leaks & Better Energy Efficiency

We also fix basement leaks with permanent basement leak repair. With our system in place there is no need to fear basement flooding. We want your basement to be safe for years so our work comes with a transferable lifetime dry-basement warranty. 

Foundation Repair & Concrete Leveling

Whatever the issue we are the trusted foundation repair contractor. Our foundation repair experts will visit your home, identify the issue and recommend the right solution. We provide permanent foundation repairs using non-invasive methods. There is no need to tear up your entire yard to fix the foundation.

Repairs for:
  • Wall Cracks
  • Bowing Walls
  • Uneven Floors
  • Settling Foundations
  • Uneven Concrete Slabs       
We Use: 
  • Wall Anchors
  • EverBrace™ Wall Repair System
  • Foundation & Slab Piers
  • Crawl Space Jack Posts
  • PolyLEVEL 

Along with general foundation problems we also fix sunken concrete slabs using PolyLEVEL. PolyLEVEL is an expansive polyurethane foam that fills in the gaps beneath the sunken concrete and lifts it back up to a level position. It also does not erode or wash away. If you are looking for the right foundation repair company, you found it. Let's get started. 

Gutter Installation & Gutter Guards in Denville, NJ

If your gutters clog regularly, consider getting a new gutter system installed by Quality 1st Basement Systems. We offer seamless gutters, gutter guards, and replacement gutter systems that are guaranteed to never clog or pull away from your home. Schedule your free estimate on any of our gutter services in Denville and nearby!

Quality 1st Basement Systems is proud to offer Gutter Shutter, a superior gutter system designed to last for years. Having an effective gutter system in place will safely guide water away from your home and prevent potential damage to your foundation, erosion of soil, roof leaks, and more.

Gutter Shutter Features:

  • Guaranteed to never clog, sag, or pull away from your home
  • Eliminates the need for homeowners to climb dangerous ladders to clean out their gutters
  • Constructed with premium-grade aluminum that won't flex under heavy loads
  • Wide mouth outlets, double-the-size downspouts, and more effective gutter extensions
  • 6" gutter size that carries 20% more water than standard 5" gutters
  • Exclusive high-back design with gutter trough to prevent water from entering behind your gutters
  • Available in a variety of colors to complement your home

Ready to replace your damaged, leaky gutters? We offer all-in-one gutter systems, downspouts, downspout extensions, and more to keep your home protected. Give Quality 1st Basement Systems a call at 1-844-268-0860 or fill out the provided form to schedule your free gutter installation quote! We proudly serve homeowners in Denville, NJ and the surrounding areas.

Services we offer in Denville:

  • Wet/flooded basement waterproofing solutions.
  • Lifetime warranty on all perimeter waterproofing systems.
  • Foundation and structural repair solutions.
  • 25-year warranty against manufacturing defects on foundation products.
  • Crawl space sealing with CleanSpace vapor barrier.
  • Guaranteed, patented gutter products
  • 25-year warranty on crawl space encapsulation systems.
  • Financing Available
  • FREE written estimates and inspections, and fast installation
Case Studies From Denville
Quality 1st Basement Systems was contacted by a homeowner in Denville, NJ about a foundation concern. The homeowner noticed the walls of their garage...
A 2,983 square foot home in Denville, NJ was experiencing approximately 8 inches of foundation settlement. The home was built in 1959 with a cinder...
Job Stories From Denville, NJ
Sidewalk Repair in Denville, NJ

A sidewalk should provide safety, not injuries! This homeowner in Denville, New Jersey noticed the sidewalk outside of their home was sinking and becoming unlevel. This happens when concrete is poured over poorly backfilled soil. Over time, this soil settles and creates voids underneath the slab. If this goes without repair, it could cause a major tripping hazard to other residents and someone could get injured. 

The homeowner knew this problem could not go without repair, so they contacted Quality 1st Basement Systems after searching online for solutions. Our customer care representative booked them an appointment with our System Design Specialist, Joseph DelVecchio. Joseph provided a thorough inspection and suggested they use polyurethane foam to lift and level the concrete. 

A few days later, our foreman Ramon began using our PolyLevel Injections. This is done by drilling small, penny-sized holes into the concrete and injecting the foam into the voids underneath. This process is repeated until the concrete is brought to a level position. PolyLevel is a lightweight and environmentally friendly solution that will not add any weight to the existing soil. 

When the job was complete, the homeowner was happy with the outcome. The residents in the neighborhood were able to safely walk on the sidewalk without the concern of tripping.

Fixed Foundation in Denville, NJ

A home in Denville, New Jersey had sinking floors, along with sticking windows and doors. Quality 1st was called for a FREE estimate and to inspect the home. Our System Design Specialist noticed these problems and recommended that SmartJacks be installed in the crawl space to support the sagging floors. SmartJacks are a permanent solution to make sure the foundation is stabilized. This home is stabilized and no more sagging floors or sticking doors and windows. 

If you're dealing with similar issues in your home, give us a call for your FREE estimate! Quality 1st is here to work towards a solution, with you!


Nasty Crawl Space in Denville, NJ

A homeowner in Denville, New Jersey had a musty, damp crawl space and contacted Quality 1st for a solution. Our System Design Specialist inspected the crawl space and suggested a full encapsulation system be installed. First, a vapor barrier system, CleanSpace was installed on the crawl space floors and walls. CleanSpace is a durable, bright white liner that that prevents water vapor and humidity from passing through.

This system is mildew and mold resistant and can turn the crawl space into a usable storage area. Vent covers were also installed on the outside of the crawl space to form an airtight bond so no cold air can get into the crawl space. This crawl space is now free of cold air and the homeowners can use it for the storage they need.  

If you have similar problems, contact Quality 1st for your FREE estimate!

Waterproofed Basement in Denville, NJ

A homeowner in Denville, New Jersey was experiencing puddles of water in their basement every time it rained. The homeowner contacted Quality 1st for a FREE estimate. Our system design specialist inspected the basement and had a full waterproofing system installed. The WaterGuard system was installed along the edge of the basement floor, underneath the floor slab, to prevent clogging. This keeps the system out of the mud zone.

The TripleSafe sump pump was installed to pump the water out of the basement. The TripleSafe has three levels of protection with three different levels of pumps in case of one pump failure. This sump pump has a backup battery that is capable of pumping 11,500 gallons or more on a fully charged battery. A SaniDry dehumidifier was installed in the basement to eliminate damp, musty odors by drying and filtering the air. This basement is fully protected and waterproofed so the homeowner does not have to worry about a wet, damp basement anymore.         

If you have wet basement problems, contact Quality 1st for your FREE estimate! We are the solution!

Work Requests From Denville, NJ
Project Location: Denville, NJ
Water coming into building in various spots when it rains a lot.
Project Location: Denville, NJ
Need to repair and level sidewalk.
Project Location: Denville, NJ
I had a quote from quality 1st done back in 2019. We had some other work done and we are considering putting a system in if the price is right. I am looking to get an updated quote. I have the original if you would like me to send it along.
Project Location: Denville, NJ
75-100 sq foot crawl space under our front door foyer and entrance. Have easy access (3ft by 3 ft) need removal of old insulation, vacuumed, mold treatment, sealing and new insulation, with plastic seal top and side... no ground water problem, but there is chipmunk acorns. chipmunk access has been sealed . Home is on a hill and home is a raised ranch with no cellar. Need an estimate for the job and time to complete along with deposit requirements
Project Location: Denville, NJ
I get water in my basement anytime it rains.
Project Location: Denville, NJ
We have been getting water through the cinder blocks in the basement. Looking to waterproof.
Project Location: Denville, NJ
I am interested in the Waterguard System. I don't know if it is right for my situdation.
Project Location: Denville, NJ
Leaky basement from rainwater
Project Location: Denville, NJ
Foundation cracks in foundation wall in garage causing water seepage..identified in home inspection
Project Location: Denville, NJ
Need side walk leveled
Project Location: Denville, NJ
We are having some water leak through our basement floors where they meet the walls of the basement and need to have it repaired.
Project Location: Denville, NJ
Need Dehumidifier for crawlspace
Project Location: Denville, NJ
I know my "crawl space" needs some repair and maybe waterproofing. Just looking for some estimates to see potential cost.
Project Location: Denville, NJ
I have some visible foundation cracks in my basement and would like them repaired.
Project Location: Denville, NJ
When heavy rain makes wet basements 。
Project Location: Denville, NJ
Comment: Service PolyLevel Source Facebook/Instagram **This Is A NO CHARGE Lead**
Project Location: Denville, NJ
I am looking to get a quote to have part of my basement waterproofed.
Project Location: Denville, NJ
Our basement has water and humidity, we need a free estimate for a solution
Project Location: Denville, NJ
Waterproof basement about 5-900 sq feet. And recommend any repairs needed. Thank you
Project Location: Denville, NJ
I am interested in installing vinyl tiles in my 300 square-foot basement. There are areas that are not level and there is also paint on the floor. I would like to get an estimate on leveling so I can install the vinyl tiles

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