One of the most common questions homeowners ask when considering a paver patio, walkway, or driveway is:
“Won’t weeds grow between the pavers?”
The short answer is: they can, but properly installed pavers are not supposed to become a weed garden.
Weeds between pavers are usually less about the pavers themselves and more about how the entire system was installed and maintained.
When the proper base, drainage, compaction, joint material, and edge restraint are used, weed growth can be dramatically reduced.
At Mountain Strong Landscaping, we build our paver installations as complete systems—not simply by putting pavers on the ground.
Where Do the Weeds Actually Come From?
One of the biggest misconceptions about paver patios is that weeds simply grow up from underneath the pavers.
In a properly constructed paver system, that generally isn’t what is happening.
Most weeds that eventually appear in paver joints start from seeds and organic debris that land on the surface. Wind can bring in seeds, leaves and dirt can collect in the joints, and over time that material can create an environment where vegetation can take root.
This is why installation quality matters.
Our goal isn’t to make your patio completely immune to nature. No outdoor surface can make that promise.
Our goal is to eliminate as many opportunities for weeds to establish themselves as possible.
Our Open-Grade Base Helps Create a Better Paver System
One of the biggest differences in our paver installations is what happens underneath the pavers.
We use an open-graded aggregate base system designed to provide excellent drainage while creating a stable foundation for the pavers.
Unlike dense-graded aggregate that contains a large amount of smaller fines, open-graded aggregate is made up primarily of larger, clean stone with interconnected voids.
Those voids allow water to move through the base rather than becoming trapped in a dense layer of fines.
That matters for more than just drainage.
A properly constructed open-grade system helps reduce the amount of fine soil and organic material within the base. It creates a cleaner, more stable foundation underneath the pavers rather than giving roots and vegetation a mixture of soil and fines to grow through.
Proper drainage is a major part of a successful paver installation.
Water needs somewhere to go.
When a paver system is properly designed and constructed, water can move through the appropriate layers instead of sitting in the system.
This is one of the reasons we put so much emphasis on the materials underneath the pavers—not just what the finished patio looks like.
The Joint Material Matters
The material between the pavers is another major factor in preventing weed growth.
A joint that is partially empty, washed out, or filled with loose dirt provides an opportunity for seeds and organic material to collect.
That’s why we don’t treat the joints as an afterthought.
For many of our paver installations, we use GFTK vdw 850+ as our jointing material.
GFTK 850+ is a two-component, self-compacting paving joint mortar designed for concrete pavers and other paving applications. It is water-permeable, abrasion-resistant, resistant to freeze/thaw and de-icing salts, and designed to create a permanently filled joint when properly installed. (GftK mbH)
This is a completely different approach than simply sweeping loose sand into the joints.
Why We Use GFTK 850+
A good joint does much more than make a patio look finished.
The joint material helps keep the pavers locked together while reducing the amount of space available for dirt and organic debris to accumulate.
GFTK 850+ is designed to remain water-permeable while providing a durable, filled joint. The manufacturer specifies a minimum joint depth of 30 mm and a minimum joint width of 5 mm for the product. (GftK mbH)
That combination is important.
We want water to be able to move through the system without creating an easy place for weeds to establish themselves.
GFTK also describes 850+ as resistant to abrasion, freeze/thaw cycles, de-icing salts, and mechanical sweeping. (GftK mbH)
For homeowners, that means the joint is designed to be part of the long-term performance of the patio—not simply something that looks good on the day the project is completed.
Proper Joint Preparation Is Just as Important
Even the best jointing material cannot make up for poor installation.
Before installing GFTK 850+, the joints need to be properly prepared and cleaned.
The manufacturer calls for a stable, load-bearing, permanently water-permeable substrate and proper joint depth. The material is then worked thoroughly into the joints and properly cleaned from the surface. (GftK mbH)
This is another reason we don’t believe there is a shortcut to a quality paver installation.
The product matters—but the installation matters just as much.
Pave Tool Hybrid Edging Helps Keep the System Locked Together
Another important component that homeowners don’t always see is the edge restraint.
Pavers are an interlocking system. If the outside edges of the installation are allowed to move, the pavers can gradually shift and the joints can begin to open.
We use Pave Tool Quick-E-Hybrid HD Edging as our edge restraint.
This high-strength aluminum edging is specifically designed to prevent lateral creep and shifting of pavers. It is designed for both open-grade and dense-grade installations and can be used on patios, walkways, and driveways. (Pave Tool Innovators)
One of the biggest advantages for our installations is that the system is specifically designed to work with open-grade bases.
Pave Tool’s Hybrid Edging uses specialized Hybrid Stakes for open-grade installations, allowing the edging to be securely restrained even when using clean stone beneath the pavers. (Pave Tool Innovators)
That is important because traditional edge-restraint systems aren’t necessarily designed around the same installation methods we use.
Pave Tool also incorporates reinforced tabs and a flexible aluminum design that allows the edging to be formed around curves while providing additional stability. (Pave Tool Innovators)
Why Edge Restraint Matters for Weed Prevention
You may be wondering:
“What does the edge restraint have to do with weeds?”
Quite a bit.
The edge restraint itself doesn’t prevent weeds from growing.
What it does is help keep the paver system from spreading or shifting.
When pavers move apart, joints can become wider. Wider and deteriorating joints create more room for dirt, organic debris, and seeds to accumulate.
Keeping the pavers properly restrained helps maintain the integrity of the entire system.
That’s why we look at the patio as a system where every component works together.
Compaction Is Critical
Proper compaction is another major part of the equation.
The aggregate base needs to be properly installed and compacted to create a stable foundation.
The pavers also need to be properly compacted during installation so the system locks together and the jointing material is properly seated.
Poor compaction can leave voids and create movement over time.
A patio that moves can develop larger joints, uneven areas, and places where debris can accumulate.
Professional installation isn’t just about making the patio look good when we’re finished.
It’s about building a system that continues to perform years later.
Geotextile Helps Separate the Base From the Soil
Another important component is the separation between the native soil and the aggregate base.
Where appropriate, we use geotextile fabric beneath the aggregate base.
This is especially important in areas with clay soils.
The purpose isn’t simply to “stop weeds.” It helps separate the aggregate from the underlying soil and helps prevent the base from becoming contaminated with native soil.
Keeping the aggregate system clean and functioning as designed is an important part of maintaining its structural and drainage characteristics.
What About Weeds Years Later?
Here’s the honest answer:
No outdoor hardscape can be guaranteed to remain 100% weed-free forever.
Your patio is outside.
Seeds will eventually land on it. Leaves will fall on it. Dirt and organic debris can accumulate.
That’s simply part of owning an outdoor living space.
The difference is that a properly constructed paver system makes it much more difficult for weeds to establish themselves.
And when the occasional weed does appear, it can be addressed without meaning that the entire patio has failed.
Think of it this way:
We’re not trying to make your patio immune to nature. We’re designing it so nature has a much harder time taking it over.
Proper Installation + Basic Maintenance
Even a professionally installed patio benefits from basic maintenance.
Keeping leaves and organic debris from accumulating in the joints helps reduce the material that seeds need in order to establish themselves.
Blowing off the patio, keeping grass clippings from accumulating in the joints, and addressing vegetation early can all help keep the installation looking its best.
The better the joints and surface are maintained, the less opportunity there is for organic material to build up.
Why We Don’t Cut Corners
There are many ways to install pavers.
You can make a patio look good when the job is finished without necessarily building the entire system correctly.
At Mountain Strong Landscaping, we focus on the parts that aren’t always visible once the project is complete:
Proper excavation.
Open-graded aggregate base.
Proper drainage.
Geotextile separation where appropriate.
Proper bedding material.
Proper compaction.
GFTK 850+ jointing material.
Pave Tool Hybrid Edging.
Proper installation techniques.
Those details are what help create a paver installation that remains stable, drains properly, and requires less maintenance over the years.
So, Are Weeds in Pavers a Concern?
They can be—but they shouldn’t be a major concern when the paver system is properly designed and installed.
If you’ve seen an old paver patio covered in weeds, don’t assume that is what every paver patio will eventually look like.
The quality of the installation makes a tremendous difference.
A properly constructed open-grade base, properly installed GFTK 850+ joints, strong edge restraint, proper compaction, drainage, and reasonable maintenance all work together to create a cleaner, more durable paver system.
At Mountain Strong Landscaping, we don’t just install pavers.
We build the system underneath them to perform
