Water seepage through cracks
Why it happens in Longmont
This often occurs due to the clay-rich soils in Boulder County holding moisture.
How we fix it
We use sealants and drainage systems to prevent future leaks in Longmont.
4.7★
Average rating
2,150+
Reviews
14,546+
Jobs done
97%
Satisfaction
(About)
More about Three Brothers Waterproofing →
Your Local Basement Waterproofing Experts in Longmont
Looking for reliable Basement Waterproofing in Longmont, Longmont homeowners trust Three Brothers Waterproofing first. Longmont is a mid-sized city in Boulder County, and its semi-arid highland climate drives the work we do here.
Across Niwot to Mead, our teams serve Longmont and the wider northern Colorado, tackling the basement waterproofing problems that come with Boulder County's warm, dry summers and low to moderate precipitation. We know the local homes and move fast across all 3 ZIP codes.
Every Longmont job comes with a solid workmanship guarantee and a flat-rate quote you approve before we begin - no hidden fees. This is how Longmont residents recommend Three Brothers Waterproofing.
(Our Services)
Basement Waterproofing services in Longmont, CO
Foundation crack repair
Same-day Foundation crack repair in Longmont, handled by certified local crews who understand Boulder County. Our specialists are adept at addressing the unique foundation challenges posed by Colorado's semi-arid climate. With fluctuating temperatures and moisture levels, it's essential to tackle cracks early. We provide a flat-rate written quote for every project, ensuring you know exactly what to expect before we begin any work.
View details →Interior basement waterproofing
Fast Interior basement waterproofing in Longmont, carried out by licensed local crews who understand Boulder County. Our team specializes in creating effective waterproofing solutions that protect your home from the Colorado climate. With a focus on preventing moisture buildup, we provide a flat-rate quote before starting any project, ensuring peace of mind for all homeowners.
View details →Exterior basement waterproofing
Same-day Exterior basement waterproofing in Longmont, carried out by licensed local crews who understand Boulder County. With a focus on the unique challenges presented by our local climate, our skilled team will work to prevent external water intrusion. We ensure a flat-rate written quote so you know exactly what to expect before we commence any work.
View details →Basement leak repair
Fast Basement leak repair in Longmont, handled by licensed local crews who understand Boulder County. Our team is trained to identify and rectify leaks swiftly, ensuring your basement remains dry even with Colorado's unpredictable weather. We provide a flat-rate written quote before starting any repairs, so you always know what you're getting.
View details →Emergency basement flooding
Reliable Emergency basement flooding in Longmont, carried out by licensed local crews who understand Boulder County. Our rapid response team is available 24/7 to address water emergencies and prevent lasting damage to your property. We offer a flat-rate written quote before we begin any work, providing transparency and peace of mind.
View details →(Why Choose Us)
Why Longmont Residents Trust Us
Local accountability across Boulder County.
Locally Owned
Serving our northern Colorado neighbors, not a call center.
Guaranteed Work
Written workmanship guarantee on every Longmont job.
Transparent Quotes
You approve the flat rate before we start.
Vetted Technicians
Background-checked pros in your Longmont home.
(Longmont at a glance)
Local Basement Waterproofing for Longmont, CO
Population served
102,512 residents
County
Boulder County
Region
northern Colorado
Nearest metro
Boulder · 13 mi
From Denver
30 miles north of Denver
ZIP codes covered
3
(Transparent Pricing)
Basement Waterproofing pricing in Longmont
Typical ranges for the most common jobs. Every quote is flat-rate and confirmed in writing before work begins.
Final pricing depends on the specific job, access, and parts. Call (844) 516-0132 for an exact quote in Longmont.
(Local Expertise)
Local Expertise in Longmont
Why Longmont homeowners and businesses call us first.
Code-Compliant
Versed in Boulder County and Colorado basement waterproofing codes.
Same-Day Service
Most Longmont calls reached within the hour.
Upfront Pricing
Flat-rate quotes before any work begins.
Licensed & Insured
Colorado-licensed pros on every Longmont job.
(Problems We Solve)
Common Basement Waterproofing Problems in Longmont
The issues we fix most for Longmont homeowners, and why they happen here.
Basement flooding during heavy rain
Why it happens in Longmont
Heavy rainfall during the low to moderate precipitation season often overwhelms local drainage systems.
How we fix it
Our team installs improved drainage solutions to mitigate flooding risks.
Mold growth due to moisture
Why it happens in Longmont
The humid conditions in summer can promote mold in basements lacking proper ventilation.
How we fix it
We recommend waterproofing solutions and dehumidifiers to combat mold.
Foundation cracks
Why it happens in Longmont
Shifts in soil during freeze-thaw cycles can cause cracks in Longmont foundations.
How we fix it
We utilize professional foundation crack repair techniques for lasting results.
(When To Call)
Signs You Need a Basement Waterproofing Pro in Longmont
Catch these early in Longmont's semi-arid highland climate.
01
Damp walls
If you notice moisture or damp spots, it's a warning sign.
02
Musty odors
An unpleasant smell can indicate mold or moisture problems.
03
Peeling paint
Paint that is bubbling or peeling often results from water infiltration.
04
Visible mold
Mold growth is a clear indicator that your basement needs attention.
05
Cracks in walls or floors
Cracks can allow water to enter and should be repaired immediately.
06
Puddles forming in the basement
Standing water is a clear sign of a waterproofing issue that must be addressed.
(Knowing Longmont)
Serving Every Corner of Longmont
We route efficiently across Boulder County.
Downtown Longmont
Daily basement waterproofing for central Longmont.
The Niwot corridor
Established neighborhoods we update often.
Greater Boulder County
Same-week routing region-wide.
(Service Area)
Coverage across Longmont & Boulder County
Communities we serve near Longmont
NiwotMeadFirestoneFrederickLeynerGunbarrelErieLyonsBerthoudAltonaValmontDacono
ZIP codes we cover in Longmont
805018050380504
Nearby cities
(Year-Round)
Seasonal Basement Waterproofing Tips for Longmont
How Longmont's semi-arid highland climate changes basement waterproofing needs through the year.
Spring
Spring brings increased rainfall.
Tip: Check for any cracks that may worsen with the thaw.
Summer
Warm, dry conditions can lead to increased evaporation.
Tip: Consider dehumidifiers to manage moisture.
Fall
Fall brings fluctuating temperatures and early snow.
Tip: Inspect your drainage systems before winter hits.
Winter
Cold, snowy winters can freeze and thaw soil.
Tip: Ensure your basement is ready to handle melting snow runoff.
(Reviews)
What Longmont Customers Say
“I received an honest and straightforward emergency basement flooding quote with no hidden fees - highly recommend!”
Sam O.
“I had an urgent foundation crack repair in Longmont and Three Brothers Waterproofing showed up within the hour, fixed the issue quickly, and my basement is now safe and dry.”
Marcus T.
“As a repeat customer, I trust Three Brothers Waterproofing for my foundation crack repair; they have always provided excellent service.”
Aisha M.
(FAQs)
Longmont Basement Waterproofing FAQs
Do you offer emergency basement waterproofing in Longmont?
Yes - we operate 24/7 across all Longmont ZIP codes, with most calls responded to within an hour.
How much does basement waterproofing cost in Longmont?
Costs vary based on the job size, but we provide flat-rate, written quotes for all work.
Are you licensed and insured in Colorado?
Absolutely - Three Brothers Waterproofing is fully licensed and insured to operate in every county in Colorado.
What areas around Longmont do you serve?
We cover all of Boulder County and nearby cities such as Niwot.
How soon can you schedule basement waterproofing in Longmont?
We can often schedule service as soon as the same day, depending on availability.
Do you guarantee your basement waterproofing work?
Yes, we offer a written workmanship guarantee on all our services.
Are you licensed in Colorado and Boulder County?
Unlicensed work can void insurance.
Do you provide a written flat-rate quote up front?
This ensures transparency in pricing.
Is your work guaranteed in writing?
A written guarantee provides peace of mind.
How fast can you reach my Longmont address?
Fast response times can minimize damage.
Need Basement Waterproofing in Longmont Today?
Call now for fast, licensed basement waterproofing anywhere in Longmont and Boulder County.
Call (844) 516-0132