Interior Waterproofing
Exterior Waterproofing
Masonry
Other servicesExterior membranes Installation Services in suffolk & Nassau county, NY
Serving in Suffolk County, Nassau County, and More!
Stop Water With Reliable Exterior Membranes
Keep Water Out Before It Gets In
We know that nobody wants water in their basement. Exterior membranes are a powerful waterproofing solution that’s applied directly to your home’s foundation walls. At Diamond Masonry & Waterproofing, we install these to keep basements dry and foundations strong. Contact us to get your free estimate!
What Sets Our Waterproofing Apart
Dependable Solution
We’ve protected homes of all shapes and sizes.
Resistant Build
Our membranes withstand cracking and shifting.
Precise Jobs
Finish the job with minimal damage to your yard.
Custom Solutions
The best methods for your home’s needs.
Transparent Pricing
Honest work with no hidden fees.
The Go-To Team for Exterior Membranes
We Offer Real Waterproofing Backed by Real Experience
Exterior waterproofing stops water before it reaches your basement. By applying a durable exterior membrane directly to your foundation walls, we create a long-lasting barrier that shields your home from hydrostatic pressure, soil moisture, and leaks.
We’ve helped hundreds of homeowners, so we know exactly what to do. At Diamond Masonry & Waterproofing, we handle every part of the process, from excavation to finishing, with care and respect for your property.
Here’s how we get it done:
- Evaluate foundation to determine source of water intrusion
- Recommend exterior waterproofing solution
- Excavate around the foundation and apply the waterproof membrane
- Backfill and compact excavated area
500+
Completed Projects
150+
Positive Customer ReviewsContact Us for a Free Estimate!
Take the first step toward a dry, secure home. Contact us now for expert waterproofing and masonry solutions tailored to your needs.
Exterior Membranes With Diamond’s Solutions
- Stop Leaks at the Source – Membranes block water from penetrating foundation wall.
- Extend Foundation Life – Reduce the wear on your foundation from the moisture and ground pressure.
- Prevent Mold and Moisture – Keep your basement healthier and safer year-round.
- Durable in Any Climate – Our exterior waterproofing solutions stand up to freeze-thaw cycles and soil movement.
- Custom Fit for Your Home – No guesswork, just a system designed for your foundation layout.
- Professional Installation – Our crew is efficient, careful, and respectful from start to finish.
- Peace of Mind – We stand behind our work, all our jobs come with a warranty.
Diamond-Approved Reviews
Get a Free Estimate for Exterior Membrane Installation
We’ve protected hundreds of homes with reliable waterproofing systems backed by over 150 outstanding reviews. If you’re ready to defend your basement from the outside, let us help with high-quality waterproofing solutions that actually work.
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Your local experts serving in Nassau County, Suffolk County, and More!
Frequently Asked Questions
What is the best waterproofing method for exterior walls?
Applying a high-quality exterior membrane directly to the foundation wall is one of the most effective ways to stop water before it gets inside. It creates a long-lasting barrier against moisture, soil pressure, and leaks.
What is the best membrane for waterproofing?
We use flexible, high-performance exterior waterproof membranes that can move with your foundation and resist cracking. The best type depends on your home’s structure and drainage, and we always match the product to the job.
What is the life expectancy of exterior waterproofing?
When installed correctly, exterior membranes can last 20–30 years or more. At Diamond Masonry & Waterproofing, we only use trusted materials and back our work with warranties for added peace of mind.
What is the disadvantage of membrane waterproofing?
The main downside is that it requires excavation to access the foundation walls, but it’s also one of the most thorough and long-lasting solutions. Our team keeps the process clean, careful, and efficient from start to finish.
Is exterior waterproofing better than interior?
Exterior waterproofing stops water at the source, while interior solutions manage it after it enters. For long-term protection, exterior membranes are often the better investment, especially if you’re looking to fully prevent water intrusion.
Can exterior membranes prevent basement leaks during heavy rain?
Yes, when properly installed, exterior waterproofing membranes form a protective barrier that prevents water from seeping through foundation walls, even during heavy rain. This is especially valuable in areas like Suffolk and Nassau County where seasonal downpours can lead to water intrusion.
How is an exterior waterproofing membrane installed?
The process typically involves excavating around the foundation, cleaning the surface, applying a waterproof membrane (such as rubberized asphalt or polymer-modified bitumen), and then adding a protective drainage layer. The trench is then backfilled carefully to restore the landscape.
How long does exterior membrane installation take?
Most residential exterior membrane installations take 2 to 5 days, depending on the size of the foundation, soil conditions, and weather. Larger or more complex projects may take longer, especially if other drainage components like weeping tiles or sump systems are added.
What are the most common causes of membrane failure?
The most common causes include improper surface preparation, membrane punctures during backfilling, and inadequate drainage systems. Over time, poor installation or soil pressure can cause the membrane to separate or degrade, reducing its ability to block water.
Can I apply an exterior waterproofing membrane myself?
While possible, it’s not recommended. Proper installation requires excavation, surface preparation, and understanding of local drainage, all of which involve safety risks and technical knowledge. Our professionals make sure the membrane is applied correctly and lasts.
